摘要
研究目的:明确岩溶山区深埋隧道施工突水灾害形成的地质条件,给隧道施工地质超前预报工作提供技术基础。研究方法:在现场调研的基础上,对宜万铁路岩溶地区的隧道工程进行了多方面的分析。研究结果:得出了深埋隧道施工过程中揭露的深部岩溶地质特征,岩溶洞穴、管道的形成与地层岩性、岩层构造、褶皱形态、岩层产状、断层特征等岩性构造因素的相关性,以及岩溶地貌和地下水条件与隧道突水灾害的关系。研究结论:岩溶突水地质灾害可能发生的工程位置与岩性分异界面、岩层接触界面、褶皱核部转折端、断层等地质因素有密切关系,这些部位是大型岩溶洞穴可能出现的位置,因此隧道线路上这些地质位置也是岩溶突水灾害形成的可能部位。在此基础上提出了岩溶山区隧道施工过程中岩溶灾害危险地段的判定原则。
Research proposes：In order to ascertain geology condition of karst water bursting disaster in the course of tunnel caving and give a technique foundation for the work of tunnel geology prediction.
Research methods：The paper got that the geological condition uncovered in construction of deep buried tunnel in karst area;the correlation of karst developing degree with the lithology and geological structure factors, the geological structure factors include layer thickness, fold shape,layer attitude and fault character;the correlation of karst physiognomy and underground water condition with tunnel karst water bursting disaster.
Research results：On the base of investigation in suit, the paper analyzed some tunnel projects of Yichang——Wanzhou railway in karst area.
Research conclusions： It is cleared that the possible place of karst bursting disaster has great relativity with some geology locality, such as lithological interface, separation plane of bed, inflection surface of fold and fault. Huge karst cave is very possible formed in this kind geology place. At the same time the principle of judging karst disaster danger segment in the course of tunnel construction is bought forward.
出处
《铁道工程学报》
EI
北大核心
2006年第3期21-24,共4页
Journal of Railway Engineering Society
基金
铁道部科技开发计划项目(2003G036-1)
北京交通大学科研基金项目(2003SM020)
关键词
岩溶山区
深埋隧道
岩溶突水
灾害
地质条件
karst mountainous area
deep buried tunnel
karst water bursting
disaster
geology condition
