岩溶区隧道工程地质勘察要点分析

Analysis of the key points of geological investigation of tunnel engineering in karst area

岩溶区的复杂工程地质问题,严重影响隧道工程的选线、设计、施工及运维。工程地质勘察可查明岩溶区隧道工程的地质环境条件,保障隧道建设的安全与稳定。本文在对岩溶区隧道建设中常见的工程地质问题进行阐述,介绍了岩溶区隧道勘察中一般的工程地质测绘、钻探工程、工程物探、测试与监测等常用方法,在此基础上从可行性勘察与初步勘察、详细勘察及施工勘察3个阶段对岩溶区隧道勘察要点进行分析,厘清岩溶区隧道勘察各阶段的勘察目的、勘察内容及勘察手段,为岩溶区隧道勘察工作提供指导。

The complex engineering geological problems in karst areas seriously affect the alignment,design,construction and operation and maintenance of tunnel engineering.Engineering geological investigation can identify the geological environmental conditions of tunnel projects in karst areas and ensure the safety and stability of tunnel construction.In this paper,the common engineering geological problems in the construction of karst tunnels are elaborated,and the general engineering geological mapping,drilling engineering,engineering physical prospecting,testing and monitoring and other commonly used methods of karst tunnel survey are introduced,based on which the feasibility survey and preliminary survey,detailed survey and construction survey are analyzed from the three phases of the key points of karst tunnel survey,to clear up the purpose of each stage of the karst tunnel survey survey,the content of the survey and the means of the survey,and to provide guidance for thekarst tunnel survey work.