摘要
为研究断层破碎带多类因素对软岩隧道涌水的敏感性问题,并查明佛头岭隧道涌水的工程地质原因,通过建立断层破碎带隧道有限元分析模型,采用正交试验方法分析断层破碎带倾角、宽度、至隧道净距和带内充填物力学性质4类因素对隧道涌水量大小及围岩稳定的影响程度,结合试验结果具体分析佛头岭隧道涌水塌方的情况。结果表明:断层破碎带倾角、至隧道净距及带内充填物力学性质是影响隧道涌水及围岩稳定的重要因素,断层破碎带宽度为一般因素;佛头岭隧道出现的涌水塌方为断层破碎带受开挖扰动而引发的地质灾害,经分析断层破碎带倾角、至隧道净距及带内充填物力学性质等3类因素对佛头岭隧道涌水及围岩稳定均为不利。
In order to study the sensitivity of various factors of fault fracture zone to the water gushing of soft rock tunnel,and to find out the engineering geological reasons for the water gushing of Fotouling tunnel,the finite element analysis model of fault fracture zone tunnel is established,four factors to the size of tunnel water gushing and the stability of surrounding rock are studied with orthogonal test method,which are the inclination and width of fault fracture zone,the clearance from the fracture zone to the tunnel and the mechanical properties of the filling in the fracture zone,and combined with the test results,the situation of the water gushing with collapse in the Fotouling tunnel was analyzed in detail.The results show that the inclination of fault fracture zone,the clearance from the fracture zone to the tunnel and the mechanical properties of the filling in the fracture zone are important factors affecting the tunnel water gushing and stability of surrounding rock,the width of fault fracture zone is a general factor.The water gushing with collapse occurred in the Fotouling tunnel is a geological disaster caused by the excavation disturbance of the fault fracture zone.After analysis,the three types of factors,such as the inclination of fault fracture zone,the clearance from the fracture zone to the tunnel and the mechanical properties of the filling in the fracture zone,are unfavorable to the water gushing and surrounding rock stability of the Fotouling tunnel.
作者
杨成忠
杨鹏
王威
曾孟文
廖磊
YANG Chengzhong;YANG Peng;WANG Wei;ZENG Mengwen;LIAO Lei(School of Civil Engineering and Architecture of East China Jiaotong University,Nanchang,Jiangxi 330013,China;Gandong Highway Design Institute,Fuzhou,Jiangxi 344000,China)
出处
《公路工程》
北大核心
2020年第6期39-43,共5页
Highway Engineering
基金
国家自然科学基金项目(51668017)
江西省自然科学基金项目(20181BAB216030)
江西省交通运输厅科技项目(2016D0038)
江西省教育厅科技项目(GJJ170399)。
关键词
隧道工程
软岩隧道
断层破碎带
涌水
正交试验
tunnel engineering
soft rock tunnel
fault fracture zone
the water gushing
orthogonal test
