浅埋偏压残坡体断层破碎岩溶发育成因及分布研究

Shallow Buried Tunnel Bias Residual Slope Fault Fracture Karst Development Research Causes and Distribution

马口排隧道残坡体断层破碎岩溶区域居多,若在未探明岩溶发育及分布规律的情况下贸然施工,极易出现各种地质灾害,甚至出现塌方的可能。在施工前,通过对马口排隧道浅埋偏压残坡体断层破碎岩溶发育的可溶性岩层、地下水发育以及溶解条件3方面成因的研究,对整个马口排地质的勘察具有重要指导意义。在此基础上,通过对地质岩性、地下水发育并结合地质雷达的勘探,分析了马口排隧道岩溶分布的基本情况,即在隧道K225+805~K225+949为岩溶槽谷岩溶极发育段,在其余工程段以岩溶发育区和岩溶发育破碎带为主的分布规律。通过对马口排隧道每段岩溶的详细分布情况,可预先做好针对每个段位的施工准备并预防可能出现的地质灾害,为马口排隧道安全施工提供保障。

The residual slope of the majority of crushed rock in Makoupai tunnel. If there is no proven karst development and distribution of the case of hastily construction, prone to a variety of geological disasters, and even the possibility of landslides. Before the construction, it is of great significance to the investigation of the geology of the whole Makoupai tunnel studying the three aspects of the development of the soluble rock formation, groundwater development and dissolution conditions of the shallow buried biased residual slope fault in Makoupai tunnel. On the basis of this, the basic situation of karst distribution in Makoupai tunnel is analyzed through the exploration of geological lithology, groundwater development and combined with geological radar. That is, the tunnel K225 ＋ 805~K225 ＋ 949 is the karst trough, in the rest of the project to karst development zone and karst development of the rupture zone-based distribution.Through the detailed distribution of the karst in each section of the Makoupai tunnel, the construction of each section can be prepared in advance and the possible geological disasters can be prevented and provided for the safe construction of the Makoupai tunnel.