重庆中梁山地区隧道工程影响下岩溶塌陷形成演化模式及防治对策  

Triggering factors and prevention-control countermeasures of karst collapses caused by tunnel construction in the Zhongliangshan area,Chongqing

作　　者：吴远斌[1] 殷仁朝 雷明堂[1] 戴建玲[1] 贾龙[1] 潘宗源[1] 马骁 周富彪 WU Yuanbin;YIN Renchao;LEI Mingtang;DAI Jianling;JIA Long;PAN Zongyuan;MA Xiao;ZHOU Fubiao(Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics,MNR&GZAR/Key Laboratory of Karst Collapse Prevention,CGS,Guilin,Guangxi 541004,China)

机构地区：[1]中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学重点实验室/中国地质调查局岩溶塌陷防治重点实验室,广西桂林541004

出　　处：《中国岩溶》2021年第2期246-252,共7页Carsologica Sinica

基　　金：中国地质调查项目(DD20190266,DD20160254);国家自然科学基金项目(42077273,41877300);中国地质科学院岩溶地质研究所基本科研业务费项目(2015017,2020002,2020016);广西自然科学基金项目(2018GXNSFAA294020)。

摘　　要：重庆市中梁山是重庆市东西向交通通道的天然屏障,严重阻碍城区经济发展,隧道可快速穿越褶皱山区,但隧道工程施工常常诱发严重的岩溶塌陷、地下含水层破坏、地表水疏干等地质灾害,威胁隧道安全施工与当地生态地质环境。越岭隧道施工对区域地下水位疏干的不同阶段,其诱发岩溶塌陷的主控因素发生改变,据此,可将岩溶塌陷发生过程分为两个阶段、两种类型:疏干初期突涌型岩溶塌陷和疏干后期降雨型岩溶塌陷。其中,疏干初期突涌型岩溶塌陷的主控因素为真空吸蚀效应;疏干后期降雨型岩溶塌陷的主控因素为岩溶管道裂隙内水气压力突变。The Zhongliangshan area is a natural barrier of the east-west traffic channel in Chongqing,that seriously hinders urban economic development.The tunnel traffic can quickly cross fold mountain areas.However,tunnel con⁃struction often induces serious karst collapse,failure of underground aquifers and surface water drainage,threatening tunnel safety construction and making impact on the ecological and geological environment.The main controlling fac⁃tors of karst collapse are variable in different stages of tunnel construction with water level drainage.Therefore,the pro⁃cess of karst collapse can be divided into two stages:sudden drawdown and drainage.The main controlling factor of karst collapse is vacuum suction effect and the sudden change of water and gas pressure in the cracks of karst pipe⁃lines,respectively.Furthermore,the prevention and control measures of karst collapse are put forward in this paper.It provides a solid geological basis for effective management of geologic hazard by local karst collapse.

关 键 词：中梁山 隧道工程 岩溶塌陷 真空吸蚀 岩溶管道裂隙 

分 类 号：P642.25[天文地球—工程地质学]