摘要
宜万铁路沿线地形、地质条件复杂,是目前已建和在建铁路中岩溶最发育的工程。宜万铁路全线设计隧道159座,其中全线洞身穿越可溶性岩层的隧道由91座。隧道施工中不可避免的遭遇到岩溶的不利影响,造成隧道突水、泥等岩溶灾害的发生,带来了重大安全危害和经济损失,成为亟待解决的重要问题。本文通过对全线岩溶发育特征、地下岩溶形态的分析,依据典型岩溶隧道实例,对隧道与岩溶的位置关系进行了分类,并探讨了宜万线岩溶隧道的主要岩溶灾害,在此基础上将隧道中的岩溶发育特征概化为四种基本模式,为采取定量分析方法分析岩溶隧道突水、突泥及岩层垮塌机理,得到规律性的认识提供支持。
The terrain and geology along Yiwan railway is very complicated,and this railway line is the most developed karstic project in built-up or newly built railway.There are 159 tunnels on this railway line,in which 91 tunnels wholly locate the karst area.It is inevitably to encounter some disadvantages in tunnel construction,as a result,the occurrence of water and mud inrush which brought momentous safe disaster and economic loss,is the critical problem to be researched and resolved in tunnel construction in karst area.The property of karst development and underground karst form on the whole line are analysed and summarized in the article,meantime,based on the practical example of karst tunnel,the location relationship between tunnel and karst structure is classified and the major geological hazards of karst tunnel are discussed.Finally,the system of tunnel and karst is generalized into four geomechanical modes,which supply support for analyzing the mechanism of water and mud inrush or mid-terrane collapse and regular knowledge byquantitative analysis.
出处
《中国地质灾害与防治学报》
CSCD
2013年第2期72-78,共7页
The Chinese Journal of Geological Hazard and Control
基金
国家自然科学基金资助项目(50978018)
