富水岩溶隧道涌、积、排水过程结构稳定性分析  

Structural stability analysis of water gushing,water accumulation and drainage processes in water-rich karst tunnels

作　　者：李芒原 马泽骋 郎志军 樊浩博 高新强 郜现磊[1] 黄林超 朱正国 LI Mangyuan;MA Zecheng;LANG Zhijun;FAN Haobo;GAO Xinqiang;GAO Xianlei;HUANG Linchao;ZHU Zhengguo(China Construction Seventh Engineering Division Co.,Ltd,Zhengzhou 450016,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Shijiazhuang Tiedao University State Kay Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang 050043,China;Hebei Technology and Innovation Center on Safe and Efficient Mining of Metal Mine,Shijiazhuang 050043,China)

机构地区：[1]中国建筑第七工程局有限公司,河南郑州450016 [2]石家庄铁道大学土木工程学院,河北石家庄050043 [3]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,河北石家庄050043 [4]河北省金属矿山安全高效开采技术创新中心,河北石家庄050043

出　　处：《粘接》2022年第2期169-180,共12页Adhesion

基　　金：住房与城乡建设部科技计划项目(项目编号:2021-k-088);中国建筑第七工程局有限公司——特长富水岩溶隧道斜井涌水处治关键技术研究(项目编号:YIJC-HLGS-D140/2021);省部共建交通工程结构力学行为与系统安全国家重点实验室开放课题(项目编号:KF2021-08);中国铁建股份有限公司2019年度科技重大专项(项目编号:2019-A05);河北省高等学校科学技术研究项目(项目编号:ZD2017248)。

摘　　要：以华丽高速控制性工程营盘山隧道2#斜井工区主洞涌积水为工程背景,运用数值模拟方法研究隧道涌水前后、不同积水时间及分阶段排水过程中隧道围岩稳定性特征。结果表明:涌、积、排水各阶段中积水阶段围岩稳定性最优;隧道积水时长对围岩和初支稳定性影响较小;斜井与主洞交叉连接处围岩所受压应力以及变形值在涌水发生后至排水完成期间均为隧道各处最大;排水后隧道稳定性明显降低,围岩塑性应变值增加显著,约比排水前增加385%。Taking the controlling project of Huali Expressway,Yingpanshan Tunnel 2^(#) slant shaft work area with water bursting in the main channel as the engineering background,numerical simulation method was applied to study the stability characteristics of the tunnel surrounding rock before and after the tunnel water bursting,different water accumulation time and phased drainage process.Several results are listed below:the stability of the surrounding rock in the waterlogging phase was the best in the stages of bursting water,waterlogging and drainage;while the duration of waterlogging in the tunnel had less influence on the stability of the surrounding rock and the primary support;The compressive stress and deformation values of the surrounding rock at the cross-connection between the inclined shaft and the main channel are the largest in all parts of the tunnel between the occurrence of water surges and the completion of drainage;The stability of the tunnel is significantly reduced after drainage,and the plastic strain value of the surrounding rock increases significantly,about 385% more than before drainage.

关 键 词：富水隧道 岩溶涌水 隧道积水 围岩强度变化 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]