地震灾害下市政管网消防供水能力可靠度评估  

Reliability assessment of fire water supply capacity of municipal pipeline network under earthquake disaster

作　　者：彭彦焜 杜坤[1] 周明[1] 宋志刚[1] 秦贤海 吴以文 PENG Yankun;DU Kun;ZHOU Ming;SONG Zhigang;QIN Xianhai;WU Yiwen(Faulty of Civil Engineering and Architecture,Kunming University of Science and Technology,Kunming 650500)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500

出　　处：《工业安全与环保》2022年第5期90-94,共5页Industrial Safety and Environmental Protection

基　　金：云南省科技厅重点研发计划(202003AC100001)。

摘　　要：提出了一种地震后管网的消防供水能力可靠度评估方法,考虑地震后管网破损的随机性与火灾发生位置的随机性,采用蒙特卡罗模拟生成管网震损场景,基于管网低压状态对不同位置火灾进行了消防供水能力评估。在管网不同位置依次生成火灾场景,对每个场景进行消防供水能力评估,同时基于我国消防用水量,构建了消防供水能力可靠度评价指标。将所提出方法应用于云南省某旅游古镇并与传统GIRAFFE方法进行比较,结果表明:传统方法高估了管网整体消防供水能力,尤其在震级较小时,会显著高估枝状管网区域的消防供水能力。A method for evaluating the reliability of fire water supply capacity of post-earthquake pipeline network is proposed,considering the randomness of the post-earthquake network breakage and the randomness of the fire occurrence location,using Monte Carlo simulation to generate pipeline network damage scenarios,and evaluating the fire water supply capacity of fires at different locations based on the low pressure state of the pipeline network.Fire scenarios were generated at different locations of the pipe network in turn,and the fire water supply capacity is evaluated for each scenario,while the fire water supply capacity reliability evaluation index is constructed based on China′s fire water consumption.The proposed method is applied to an ancient tourist town in Yunnan and compared with the traditional GIRAFFE method.The results show that the traditional method overestimates the overall fire water supply capacity of the pipe network,especially when the earthquake magnitude is small,it will significantly overestimate the fire water supply capacity of the branching pipe network area.

关 键 词：供水管网 消防供水能力 可靠度评估 

分 类 号：TU991.33[建筑科学—市政工程] TU998.1