岩溶地区公路隧道的围岩分级方法研究  

Surrounding Rock Classification of Highway Tunnel in Karst Area

作　　者：杜新国 Du Xin-guo

机构地区：[1]中铁十四局集团第二工程有限公司,山东泰安271000

出　　处：《建筑技术开发》2018年第16期111-112,共2页Building Technology Development

基　　金：国家自然科学基金(41372289)

摘　　要：喀斯特地区岩溶问题影响着隧道工程的安全施工,对隧道进行围岩分级刻不容缓。以广东省龙怀高速公路马口排岩溶隧道为工程背景,根据实际开挖掌子面得到的可溶岩性、构造切割程度、地下水条件等因素确定岩溶发育评价的定性指标,根据围岩形态、充填物、地下水等条件对隧道工程的影响程度来确定岩溶发育评价的定量指标,进而得出岩溶隧道的围岩分级结果,以为类似岩溶隧道围岩分级提供借鉴。The karst problems in Karst area affect the safety construction of tunnel engineering, and the classification of surrounding rock is urgent. In Guangdong province highway Longhuai tin karst tunnel as the engineering background, qualitative indicators to determine the evaluation of karst growth according to the actual excavation face in the karst and tectonic cutting degree, groundwater conditions and other factors, quantitative indicators to determine the evaluation of karst growth morphology according to surrounding rock filling, and groundwater conditions on the influence of tunnel engineering the degree of research conclusion of the classification results, can provide reference for the classification of surrounding rock mass of similar karst tunnel.

关 键 词：岩溶地区 公路隧道 岩溶发育程度 围岩分级 

分 类 号：U414[交通运输工程—道路与铁道工程]