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15 June 2025, Volume 44 Issue 6 Previous Issue    Next Issue

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Experimental study on fire spread behavior of inclined 刘梦镇, 陈元, 赵胜中, 庄兆意 2025, 44 (6):  731-737.  Abstract ( 99 )   This study investigates the effects of inclined angles and cable spacing on fire spread behavior of parallel dual cables through theoretical analysis and combustion experiments, with particular focus on flame morphology, mass loss rate, and fire spread rate. The results reveal that under constant cable spacing, the flame height, mass loss rate, and fire spread rate increase with greater inclined angles. At fixed inclined angles, these three parameters initially increase then decrease with expanding cable spacing, peaking when the spacing equals 1 times the cable diameter. During combustion, the mass loss curve exhibits irregular step-like abrupt changes caused by periodic detachment of carbonized layers. The initial detachment of carbonized layers predominantly occurs 200~400 s post-ignition, demonstrating significant temporal randomness. For cables of identical length burned at the same inclination, the zero-spacing configuration yields the minimum total mass loss. A predictive model for fire spread rate under horizontal and inclined conditions was developed, effectively correlating the spread rate with both inclination angle and cable spacing. Related Articles | Metrics

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dual cables in a long-narrow space Ji Xinlong, Yang Ke, Kang Qingchun, Li Xuerui 2025, 44 (6):  738-744.  Abstract ( 53 )   In order to investigate the effect of plant ash (PA) on methane explosion, PA was modified and a small semi enclosed visual explosion experimental platform was built. By changing the powder mass and particle size, the influence of modified plant ash (MPA) powder on the peak overpressure, flame propagation speed, and flame propagation morphology of 9.5% methane explosion in explosion pipelines was studied. The explosion suppression mechanism was analyzed and discussed based on the characterization results. The results showed that MPA powder has a large specific surface area and porosity, and it has a high pyrolysis weight loss rate, with a mass loss of 46%. The particle size and mass of MPA powder with the best suppression performance on methane explosion propagation in pipelines obtained in the experiment were 64~73 μm and 300 mg, respectively. Compared with the non-spraying powder experimental group, it resulted in a maximum reduction of 50.14% in the maximum explosion overpressure and a maximum reduction of 51.17% in the maximum propagation rate of methane flame. It can be seen that MPA powder exhibits excellent explosion suppression performance against methane explosions. Related Articles | Metrics

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Experimental study on the inhibition of gas explosion by modified plant ash powder Yu Xiaoyong, Zhang Biyun, Zhu Ziming, Li Kewen 2025, 44 (6):  745-750.  Abstract ( 42 )   To address the dilemma of whether to prioritize ensuring power supply reliability or preventing large-scale forest fires during tree-contact fault in 10 kV overhead lines, the fault must be divided into risk intervals. By analyzing the fire mechanism during tree-contact fault, it is concluded that the range of open flame distribution is positively correlated with the third harmonic of the fault’s grounding current. Using the spread of open flames reaching 50% as the critical marker for the high-risk stage, a method for dividing risk zones based on harmonic factors is proposed. Field measurements indicate that the method has an average error of approximately 42.4 seconds in estimating the starting time of the high-risk interval. This method provides essential theoretical and methodological support for determining responsibility in forest fires. Related Articles | Metrics

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Risk interval division for tree-contact fault in 10 kV overhead lines based on harmonic factors Song Hao, Li Wei, Zhang Chu, Zhu Pengjie, Li Beibei 2025, 44 (6):  751-755.  Abstract ( 32 )   To investigate the impact of hydrogen concentration on the venting efficiency of explosion vent panels in energy storage applications, a gas explosion test bench was established. A series of hydrogen ignition experiments were conducted in a 1 m³ pressure vessel to evaluate venting performance under varying hydrogen volume fraction (13%, 15%, 19%, and 23%). The experimental results show that: The venting efficiency cannot achieve 100% due to the inherent mass of the vent panel, which requires overcoming inertial forces during activation. Venting efficiency exhibits an inverse correlation with hydrogen concentration, yielding values of 82.0%, 72.9%, 58.1%, and 51.9% for the tested concentrations, respectively. Related Articles | Metrics

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Study of the effect of gas concentration on the venting efficiency of explosion vent panels for energy storage Zhao Yuheng, Ning Tao 2025, 44 (6):  756-763.  Abstract ( 30 )   With the rapid development of new energy vehicles, the thermal management technology of lithium-ion batteries has become a research hotspot. The phase change material （PCM） coupled heat pipe type battery thermal management system（BTMS） has emerged accordingly. Focusing on the optimization and improvement of composite PCM and the research of lithium-ion BTMS, this paper introduces several mainstream battery thermal management technologies, namely, the research progress of improving heat transfer rate, recovering thermal storage capacity, and reducing the cooling load of PCM, and summarizes the new coupled immersion cooling composite battery thermal management technology. It puts forward reasonable suggestions for the problems existing in the current lithium-ion battery thermal management system. The combination of multiple thermal management technologies, along with the intelligent thermal management system, is the trend of future development. Related Articles | Metrics

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Research progress on thermal management technology of lithium-ion batteries based on PCM Gao Yunji, Lei Zijian, Sun Ao, Zhang Yuchun 2025, 44 (6):  764-770.  Abstract ( 678 )   PDF (3606KB) ( 20 )   In order to study the effect of longitudinal ventilation on the combustion characteristics and smoke temperature distribution of lithium batteries in tunnels, a series of thermal runaway tests of single, four and nine 18650-type lithium battery packs with longitudinal ventilation wind speed of 0~1.5 m/s were carried out in the tunnel space to analyze the regularities of the experiment phenomenon, meanwhile, single, four, and nine 18650-type lithium battery packs experiments in a windless environment were carried out in the open spaces, and the change rules of thermal runaway phenomenon, characteristic flame length, mass loss, thermal runaway temperature, and tunnel smoke temperature distribution were analyzed. The results show that: The maximum characteristic flame length and maximum jet flame temperature of the lithium battery thermal runaway increase with the increase of wind speed; the maximum characteristic flame length and maximum jet flame temperature of the lithium battery thermal runaway in the confined space are smaller than those in the open space. The temperature of the smoke near the fire source has a significant peak, and the temperature of the smoke at the distance from the fire source fluctuates less.With the increase of the longitudinal ventilation wind speed, the temperature of the downstream smoke is higher than that of the upstream at the distance from the fire source. The longitudinal temperature distribution of the lithium battery smoke is in line with the exponential decay, and the experimental data are in good agreement with the predicted data, the critical wind speed of single, four, and nine lithium battery packs were 0.93 m/s, 1.83 m/s, and 2.05 m/s. Related Articles | Metrics

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Study on the effect of longitudinal ventilation on the combustion characteristics and smoke temperature distribution of lithium batteries in tunnel Shen Long, Zhao Zhengqiang, He Zhongyi, Zhang Jian, Liu Chang 2025, 44 (6):  771-775.  Abstract ( 63 )   The high-pressure fire water curtain plays an important role in cutting off the development of fire spread between buildings, and can solve the problem of insufficient fire seperation distance between buildings in wood structure building complexes effectively. In order to explore the adaptability of high-pressure fire water curtain in wood structure building complexes, this paper selects typical bucket-type residential buildings as the research object, and uses FDS to analyze the thermal insulation effect of high-pressure fire water curtain under different layout forms and water mist particle sizes, and combines the full-scale fire experiment to verify the effectiveness of the results. The results show that the high-pressure fire water curtain has good thermal insulation efficiency under different working conditions, and the thermal insulation efficiency is the best under the working condition of 1.5 m and 300 μm particle size, which is about 60.92%. The addition of high-pressure fire water curtain can effectively reduce the ignition distance of the burning building, and the maximμm ignition distance is reduced by about 44%. The thermal insulation efficiency based on the fire scene experiment is in good agreement with the simulation results, and the relative error of the thermal radiation intensity insulation efficiency of the simulated value and the experimental value at 4 m and 8 m is less than 5%. Related Articles | Metrics

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Study on heat insulation effect of high pressure fire water curtain on bucket-type residential building Hu Cheng, Cong Weiqing, Wang Qixuan, Li Junmei, Ma Jing, Li Chang, Chen Shu, Wang Yilin 2025, 44 (6):  776-782.  Abstract ( 58 )   As an area where multiple transportation modes converge, the underground transfer hall of railway stations poses challenges to emergency evacuation due to its complex spatial layout and highly dense pedestrian flow, especially when secondary security inspection facilities are newly introduced during subway-to-railway transfers, which may significantly affect evacuation efficiency. Taking the underground transfer hall of a station in Beijing as a case study, this paper analyzes the occupancy of evacuation exit space by security inspection facilities, and constructs a targeted evacuation safety risk assessment method by integrating the characteristics of transfer passenger flow, spatial functional zoning, and evacuation safety standards. Through simulating typical evacuation scenarios, the paper quantitatively evaluates the changes in evacuation time before and after the implementation of security inspections. The results show that the evacuation time meets safety requirements (5.38 min) without security inspections, while it exceeds the standard (>6 min) after the addition of security inspections, indicating that the security inspection facilities occupy evacuation channels and compromise evacuation safety in emergencies such as fires. Consequently, improvement measures are proposed, including reducing commercial areas, optimizing pedestrian flow guidance, assisting passengers with large luggage, and adjusting the layout of security inspection areas. Related Articles | Metrics

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Influence of secondary security check on safety evacuation of underground transfer hall of a railway passenger station Xu Chuchu, Guo Shien, Wang Jiyun, Huang Ping 2025, 44 (6):  783-789.  Abstract ( 27 )   In this paper, the behavior characteristics of jet fire in double slope building ceilings were studied through experiments and numerical simulations, and the effects of ceiling angle on the temperature distribution below the ceiling and plume flow entrainment behavior were analyzed by experiments and numerical simulation. The results show that the jet temperature gradually decreases from the impact point to the periphery under the horizontal ceiling condition. With the decrease of the ceiling angle, the variation trend of the jet temperature is as follows: with the increase of the distance from the impact point, both in the ridge and slope direction, the jet plume temperature presents the characteristics of first increasing and then decreasing, that is, the phenomenon of local low temperature area in the area of the plume impact point of the double-slope ceiling. Especially when the power of the fire source is large and the angle of the ceiling is small, the phenomenon of the low temperature zone is more obvious. In addition, the double-slope ceiling structure will restrict the flow of the plume along the slope direction, and the smaller the angle, the stronger the inhibition effect of the plume in the slope direction, resulting in more plume spread along the ridge direction. Numerical simulation is used to quantify the limiting effect of double-slope ceiling on air entrainment. It is found that the air entrainment per unit length under the ceiling decreases with the decrease of angle. The research in this paper is of guiding significance for the fire protection design of double-slope ceiling. Related Articles | Metrics

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Study on the behaviors of double-slope ceiling plume jet influenced by the roof angle Luan Tingting, Zhao Yukun, Li Yuxin, Yang Guoliang 2025, 44 (6):  790-794.  Abstract ( 28 )   It is very important to consider the impact of potential fire accidents of flammable liquid facilities on railway lines when selecting railway lines. Such accidents not only endanger personnel and equipment but may also cause severe damage to neighboring railway infrastructure. To determine appropriate fire separation distances and assess thermal radiation effects on railway facilities, this study employs consequence analysis methodology. First, potential fire scenarios in flammable liquid facilities were analyzed. Combined with, thermal radiation safety thresholds for railway facilities and regulations on fire separation disfance, an extreme accident consequence model was developed, incorporating three typical flammable liquids. PHAST software simulations were conducted to calculate fire separation distances under two rupture modes. The results demonstrate that thermal radiation impact range primarily correlates with liquid pool area and fuel combustion heat. Fire containment dike dimensions can be utilized to determine corresponding safety distances, enabling the development of a rapid calculation model for fire separation distances. Related Articles | Metrics

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Study on fire separation distance between railway line and flammable liquid facilities based on consequence analysis Dou Qiao, Liu Shuai 2025, 44 (6):  795-801.  Abstract ( 29 )   The walking speed of damage control operators in complex ship disaster scenarios is the key basis for the evaluation and optimization of damage control operation process. In this study, the effects of ship rolling, visibility reduced and hull tilt caused by specific disaster environment, fatigue of carrying equipment, typical path structure and other factors on the walking speed of damage control operators were comprehensively considered. Literature research and data fitting methods were used to build walking speed attenuation model under the influence of single factor. Based on the similarity analysis between firefighters and damage control operators,comprehensive quality of firefighters was measured to obtain the basic speed of damage control operators and the correction coefficient of the difference between damage control operators and ordinary people, a walking speed model under the influence of fatigue was also constructed. Based on the measurement of typical ship path structure, a calculation method for the walking speed of straight ladder, hatch door and hatch cover is established. Based on the characteristics and patterns of walking speed under the influence of the above different factors, the walking speed model of damage control operators under the influence of multi-factor coupling is developed. The research results can provide theoretical basis and practical guidance for the study of ship damage control process evaluation and optimization. Related Articles | Metrics

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Research on walking speed model of damage control operators under complex ship disaster scenarios Liu Xi, Wang Junjun, Hua Wanren 2025, 44 (6):  802-808.  Abstract ( 26 )   In order to study the response mechanism of actual rescue factors to building collapse during fire rescue, this paper adopted numerical simulation to simulate the high temperature of a three-story steel-concrete frame structure under fire, and obtains the temperature field and displacement changed under the conditions of automatic spray system, fire fighters water cooling, high frequency vibration of engineering rescue machinery and other factors. And the simulation results were found to align well with experimental data. The effects of various parameters on the structural collapse were discussed. The results revealed that longer exposure to fire led to greater displacement deformations in the fire-affected area. Significant displacements were observed in the non-fire-affected area due to the transfer of heat through combustible materials, and the maximum displacement deformation is 7.57 mm. Moreover, high-frequency vibrations caused significant instantaneous displacement fluctuations. The maximum displacement fluctuation is about 3 mm. Finally, it was found through simulation and experimental verification that short-term water cooling (within 10 min) had minimal impact on the displacement of buildings under fire, with displacements being only one ten-thousandth of the building's span. Therefore, it can be concluded that the high-temperature effects induced by fire loads have the greatest impact on the fire resistance performance of building structures once firefighters enter the fire rescue site, while the resonance frequency of large-scale engineering machinery significantly affects the instantaneous fluctuations of the structure, and short-term water cooling has minimal overall impact on the building. Related Articles | Metrics

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Research on the influence of actual rescue factors on the fire resistance performance of reinforced concrete structures Liu Bo, Gong Hua, Zhang Xin, Liang Wenhao, Ding Dongjie 2025, 44 (6):  809-815.  Abstract ( 33 )   A SRF flame retardant performance prediction method based on deep neural network model (DNN) is proposed. The SRF samples were prepared and the initial data set was obtained by experimental characterization test. The DNN prediction model was optimized and compared with the other four basic models. The results showed that the limiting oxygen index increased to 28.6%, and the peak heat release rate and total heat release decreased by 24.83% and 24.7%, respectively, when the hydrogen-containing silicone oil and platinum catalyst were increased to 7.24% and 1.16%, respectively. The coefficient of determination of the best DNN model is 0.925. The validation set is set to analyze the prediction accuracy of the DNN model, and the relative error does not exceed 10.8 %. Finally, the interpretability between DNN prediction results and input variables is analyzed by partial dependence graph. The experimental parameters of flame retardant properties such as limiting oxygen index and heat release rate of SRF can be predicted by the model, which can effectively guide the rapid optimization of the properties of silicone rubber foam composites. Related Articles | Metrics

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Predictions of flame retardant properties of silicone foam composites by deep neural network Zeng Huichong, Li Huaming, Qiang Fubin, Wang Naidi, Wang Gang, Yong Tao 2025, 44 (6):  816-821.  Abstract ( 39 )   Steel structure is one of the main types of building structures in modern buildings, but its fatal defects of being easy to corrode and not resistant to high temperatures need to be protected with anticorrosive and fireproof coatings. The fire resistance and corrosion resistance durability of self-made intumescent fireproofing coatings and their matching coatings were studied, and the basic performance, salt spray, aging and fire resistance of single coatings and composite coatings were tested. The test results show that acrylic intumescent fireproofing coatings have certain weathering and aging resistance, and can be applied in outdoor environments with urban and general industrial atmospheric pollution without the need for matching topcoats; For outdoor steel structure buildings with requirements for high fire resistance rating and high weather resistance, the intumescent fireproof coating can play a role in fire resistance while improving the anti-corrosion performance, reducing the design and use of intermediate coats. Related Articles | Metrics

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Research on fireproof and anticorrosion performance of intumescent steel structure fireproof coating Jing Lishuai, Bao Zhiming, Hu Cheng, Zhang Xianzhong 2025, 44 (6):  822-826.  Abstract ( 37 )   Based on the spill fires test model of rectangular oil tank, a solvent oil flow fire extinguishing test device with adjustable dip angle was designed and built. The effects of slope, leakage flow rate and other factors on spill fires combustion characteristics and AFFF extinguishing performance were studied, which provides the design basis for establishing the extinguishing test method of flammable liquid spill fire. The results show that the steady combustion rate of 120# solvent oil spill fires in 0.6 m rectangular steel oil tank is about 6×10-5 m/s. The parameters of flame front position, steady burning area and steady burning rate increase with increasing of fuel leakage flow. Fire extinguishing time is positively correlated with leakage flow and slope. In different parts of the oil tank, fire extinguishing at the front end is easier, while that at the rear end is the most difficult. Related Articles | Metrics

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Experimental study on the combustion characteristics and extinguishing of solvent oil spill fires Yu Wentian, Gao Zhongliang, Cao Yufei, Wang qiuhua 2025, 44 (6):  827-833.  Abstract ( 57 )   Forest fires disrupt the stability of forest ecosystems, and scientifically evaluating the driving factors of forest fires is crucial for effective prevention. This study focuses on Anning City in Yunnan and uses kernel density analysis to investigate the spatial patterns of forest fires. We established, refined, and validated a Structural Equation Model (SEM) to identify the driving factors of these fires. Results reveal that fire incidents are concentrated in the northern part of Anning City, with a tendency to expand throughout the region. The spatial clustering of fires is dispersed, indicating that no single factor drives the occurrence of fires. The adjusted SEM identified and weighted several factors: nighttime light index (0.329), population density (0.278), GDP (0.201), distance to roads (0.192), maximum sustained wind speed (0.344), average wind speed (0.322), dew point (0.288), precipitation (0.106), elevation (0.412), aspect (0.369), and slope (0.219), the model has been validated and the predicted results are accurate. These results offer valuable data and theoretical insights for predicting fire occurrence probabilities and assessing fire risks. Related Articles | Metrics

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Study on the selection of forest fire driving factors based SEM models Wu Dongdong, Yang Hailong, Wang Shaojie, Guo Zanquan, Yang Xiaoping 2025, 44 (6):  834-838.  Abstract ( 34 )   Aerial firefighting by helicopters is an important means of forest fire protection in China. Based on the analysis of the application process of helicopter firefighting, a helicopter firefighting capability index system was constructed including 20 influencing factors from four dimensions: helicopter operation safety, helicopter technical performance, fire scene operation environment, and institutional guarantee system. A relevant matrix of influencing factor indicators was established to reveal the key factors affecting the helicopter's firefighting capability and improve the firefighting and rescue capability of helicopters by using the DEMATEL method. The results showed that the center degrees of helicopter flight speed, flight altitude, flight attitude, number of helicopters, ground-air cooperation ability, and pilot driving ability were the highest, which were the direct factors affecting the helicopter firefighting capability. In helicopter firefighting operations, it is important to focus on the safety of the helicopter, enhance technological content, and optimize ground-air cooperation capabilities. This conclusion can provide a basis for decision-making in improving the firefighting capability of forest aviation helicopters. Related Articles | Metrics

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Research on the influencing factors of helicopter firefighting capability in forest aviation Ji Changqing, Cao Siyu, Li Yanzhi, Wang Zumin 2025, 44 (6):  839-845.  Abstract ( 34 )   To effectively control forest fires, it is crucial to predict the spread of the fire after obtaining information on the ground vegetation, topography, and terrain of the affected area, and to develop firefighting strategies accordingly. However, remote sensing images of the ground are often obscured by uneven cloud and fog due to weather conditions, which impairs the observation of ground vegetation information and subsequently affects predictions of fire spread. Dehazeformer, a deep learning-based dehazing method, has demonstrated some effectiveness in haze removal. However, the algorithm struggles to meet real-time performance requirements in time-sensitive tasks. To address the limitations of large model parameters and inadequate handling of haze details, this study introduces improvements to the model, focusing on lightweighting and enhancing dehazing performance. The improved model's test results indicate certain improvements in PSNR and SSIM metrics. In practical fire monitoring scenarios, the model significantly enhances the discernibility of ground information surrounding fire-affected areas through dehazing, thereby aiding in the prediction of fire spread trends. Related Articles | Metrics

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Application of dehazing methods based on SwimTransformer in forest fire Lang Xuqing, Dang Wenyi, Dong Yongzhao, Wang Qingyin 2025, 44 (6):  846-850.  Abstract ( 202 )   PDF (1736KB) ( 19 )   The two main reasons of full surface fire for large scale crude oil tanks have been briefed. It is pointed that prevention of floating roof balance loss is the key to prevent full surface fires and the uneven distribution of rain water on the floating roof should be avoided. The difficulties of dealing with full surface fires have been analyzed and the long time burning of crude oil tanks can lead to boil over, which can lead to tank fires around the burning tanks within 5～10 diameters. To prevent the boil over of crude oil tanks is the most important target for full surface fires and it is pointed out that the crude oil tank fire should be extinguished in two hours. Three fire equipment modes have been put out for full surface fires including fixed firefighting system, mobile firefighting equipment and the combined firefighting mode. Related Articles | Metrics

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Study of full surface fire extinguishment technology of large scale crude oil tank Ma Yixuan 2025, 44 (6):  851-855.  Abstract ( 38 )   When constructing the social risk prevention and control governance system in the context of rapid economic development, we must adhere to the thinking of "rule of law". Based on the background of the fire law enforcement reform in the new era and the practical needs of enhancing citizens' awareness of the rule of law, fire rescue agencies have adopted multiple measures to continuously strengthen the construction of law enforcement standardization. However, there are still problems such as imperfect laws and regulations, non-standard law enforcement behaviors, and the need to improve the quality of the law enforcement team. Combining with the actual work of fire administrative law enforcement, this paper proposes optimization paths for law enforcement standardization, including improving the construction of laws and regulations for fire law enforcement, enhancing the leading effectiveness of the "command stick" of law enforcement evaluation, using digital intelligence services to improve the quality and efficiency of fire law enforcement supervision, and comprehensively constructing a guarantee system for standardized law enforcement, etc., striving to enhance law enforcement effectiveness and achieve the unity of the effects of fire law enforcement and social governance. Related Articles | Metrics

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Research on optimizing the standardization of fire safety law enforcement Li Shuchao, Wang Xin, Liu Xueyi, Wang Yuling, 2025, 44 (6):  856-861.  Abstract ( 41 )   This paper provides the key role in user behavior assessment and electrical failure diagnosis by analyzing the application of smart electricity meter data in the investigation of multiple fire accidents. The results show that: the electricity consumption behavior of users can be effectively determined by electricity information at specific time points through the data freezing function; abnormalities such as abnormal supply voltage, short circuit faults, and poor contact, especially the impact on fire accidents of three-phase imbalance caused by naught wire faults in three-phase four-wire power supply systems and excessive contact resistance, can be traced by comprehensively analyzing the load record data and abnormal events. Therefore, the application of smart electricity meter data provides a new approach for the fire investigation, further improves the accuracy and efficiency of fire reason analysis. Related Articles | Metrics

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Application of the smart electricity meter data in fire investigation Wang Xiaojun, Song Chengyu, Yang Tianle, Wang Xin 2025, 44 (6):  862-868.  Abstract ( 50 )   Taking the investigation of two fire accidents as an example, this article introduces the application of 3D modeling of fire scenes in light and shadow analysis of fire video. By combining 3D modeling technology of the fire scene with geometric drawing method, the changes of the position of the firelight source and the spread of the fire during a residential fire were analyzed. Through the independent application of 3D modeling technology in light and shadow analysis, the position of the initial firelight source in a living room fire was analyzed. On this basis, the advantages and practical considerations of 3D modeling technology in light and shadow analysis of fire video were analyzed, providing a methodological reference for the application of 3D modeling in light and shadow analysis of fire video. Related Articles | Metrics

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Application of 3D modeling of fire scenes in light and shadow analysis of fire video Zhou Wei 2025, 44 (6):  869-876.  Abstract ( 48 )   The development of distributed photovoltaic power generation system promotes the development of social economy. The fire prevention problems in the exploitation design, construction and maintenance stage have also attracted more and more attention. This paper takes a typical distributed photovoltaic power generation system fire accident as the research object, focuses on the working principle, system composition, operation and maintenance management mode to deeply analyze the ignition law of such fires, restores the evolution process of fires, and summarizes the basic methods and investigation focuses of distributed photovoltaic power generation system fire investigation. At the same time, from the aspects of design, product selection, operation and maintenance management, technical measures and so on, the fire prevention and control of distributed photovoltaic power generation system is proposed. Related Articles | Metrics