Risk Assessment Gale Disaster along Typical Sections of Heavy-Haul Railway Based on AHP and Entropy Weight Method
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Abstract:
Gale is one of the main meteorological disasters affecting the safety of heavy haul railway transportation. Therefore, carrying out a risk assessment of gale disasters has certain guiding significance for preventing disasters and reducing damages in railway departments. This paper takes Shuozhou-Huanghua railway as a typical section of the heavy haul railway. First, the risk assessment system of gale disasters in typical sections along the heavy haul railways is constructed based on the four criteria levels such as the disaster-inducing factors of gale, environmental sensitivity of gale disasters, vulnerability of gale disaster-bearing bodies, and the capability of disaster prevention and mitigation, as well as the 17 indicator layers such as the number of blue level alarms for gale, the number of yellow level alarms for gale, the number of orange level alarms for gale, the number of red level alarms for gale, frequency of strong crosswind, altitude, terrain, the number of tracks, the number of trains, station level, allowable speed of lines, bridges, tunnels, presence of wind barriers, strong wind warning capabilities, the number of emergency personnel, and emergency rescue equipment and materials. Then, the analytic hierarchy process and entropy weight method are used to determine the weight coefficients of the above four criteria levels and the above 17 indicator layers of emergency, and finally, the comprehensive risk zoning of wind disasters in typical sections of heavy-duty railways is obtained. The results show that the railway sections from Shenchi South station to Ningwu West station, from Huanghua South station to Huanghua Port station, from Beigang station to Dagang station, and Shengang station are the highest risk sections of gale disasters along the Shuozhou-Huanghua railway. The railway sections from Longgong station to Diliudeng station, and from Huanghua East station to Yangsanmu station are the second highest risk sections of gale disasters along Shuozhou-Huanghua railway. The railway sections from Houwen station to Sanji station, from Xingtang station to Quyang station, from Dingzhou West station to Dingzhou East station, from Anguo station to Boye station, from Lixian station to Litianmu station, and from Douzhuangzi station to Guozhuangzi station are medium high risk sections of gale disasters along Shuozhou-Huanghua railway. To sum up, it can be seen that the comprehensive risk level of gale disasters along Shuozhou-Huanghua railway sections in the western mountainous, hilly areas and eastern coastal areas is the highest.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.