喜口池隧道穿越煤矿采空区段稳定性分析与研究 .pdfVIP

学兔兔 煤 炭 工 程 201 1年第7期 喜口池隧道穿越煤矿采空区段稳定性 分析与研究 张志沛 ，彭 惠 ，杨锡平。 (1西安科技大学地质与环境学院，陕西西安 710054； 2．丹东市水利勘察设计研究院，辽宁丹东 118000) 摘 要：文章以重庆奉节至巫溪高速公路重点控制工程——喜口池隧道为研究对象。在对采 空区基本特征与地表残余变形分析的基础上，对隧道采空区影响段围岩的稳定性进行了评价。与 此同时，根据该高速公路隧道穿越煤矿采空区段与采空区所在的空间位置，利用数值模拟软件研 究了隧道与采空区所在的空间位置对隧道稳定性的影响，从而为喜口池隧道的安全施工提供一定 的理论依据。 关键词：喜口池隧道；煤矿采空区；变形特征；数值模拟；围岩稳定性 中图分类号：TD325 文献标识码：B 文章编号：1671—0959(2011)07-0070-03 Analysis and Study on Stability When Xikouchi Tunnel Excavated Through Mine Goaf ZHANG Zhi—pei ，PENG Hui ，YANG Xi—ping (1．School of Geology and Environment，Xihn University of Sincere and Teleology，Xihn 710054，China； 2．Dandong City Design and Research Institute of Water Conservancy Survey，Dandong 118000，China) Abstract：Taking the Xikouchi Tunnel—the key control project of the Chongqing Fengjie—Wuxi Expressway as the study objec,t，base On the analysis On the basic features of the goal and the surface ground residua1 deformation，an evaluation was conducted on the goaf section affected to the stability of the sunounding rock in the tunfle1．Meanwhile，according to the tunnel passed through the mine goaf section and the mine goaf location in the expressway，the numerical simulation software was applied to study the space location of the tunnel and goaf affected to the stability of the tunnel，which could provide the certain theoretical basis to the safety construction of the Xikouchi Tunne1．