节理岩体隧道掌子面塌方危险性评估模型研究  

Study on risk assessment model of tunnel face collapse in jointed rock mass

作　　者：巫晨笛 马士伟 梁洪勇 曹彪 轩昆鹏 刘文辉 蒲超 WU Chen-di;MA Shi-wei;LIANG Hong-yong;CAO Biao;XUAN Kun-peng;LIU Wen-hui;PU Chao(China Construction Underground Space Co.,Ltd.,Sichuan Chengdu610073 China;Chengdu Institute of Survey＆Investigation,Sichuan Chengdu 610036 China)

机构地区：[1]中建地下空间有限公司,四川成都610073 [2]成都市勘察测绘研究院,四川成都610036

出　　处：《山东交通科技》2018年第4期141-144,147,共5页

摘　　要：通过对节理岩体隧道掌子面塌方致灾因素的分析,考虑到各影响因素之间的相关性和对应指标获取的难易性,确定了掌子面塌方危险性评价指标体系;基于功效系数法的原理,以总功效系数值为依据,建立了四等级掌子面塌方危险性评估模型;通过下马店隧道塌方危险性评价,对评估模型进行了验证分析,结果基本符合实际情况,验证了模型的实用性和有效性。In this paper,the risk assessment indexes were determined based on the analysis of hazard factors of tunnel face collapse in jointed rock mass and considering the relativity among the influence factors as well as the difficulty in obtaining the corresponding indexes. Based on the principle of efficacy coefficient method, and according to the total efficacy coefficient value,the four-level risk assessment model of tunnel face collapse was established. Through the risk evaluation of collapse in Xiamadian tunnel,the assessment model was verified and analyzed,and the result was basically consistent with the actual situation, which verified the practicability and effectiveness of the model.

关 键 词：隧道工程 围岩坍方 影响因素 数学模型 多目标决策方法 

分 类 号：U455[建筑科学—桥梁与隧道工程]