某长大隧道综合地质勘察方法的应用与研究  

Application of Comprehensive Geological Investigation Methods in a Long and Large Tunnel Excavation

作　　者：梁军 占样烈 LIANG Jun;ZHAN Yanglie(China Railway Liuyuan Group Co.Ltd.,Tianjin 300308)

机构地区：[1]中铁第六勘察设计院集团有限公司,天津300308

出　　处：《土工基础》2022年第5期696-700,共5页Soil Engineering and Foundation

摘　　要：在地形变化大、地质条件复杂的山岭地区常采用长大隧道形式通过,对于长大隧道的勘察若仅采用传统的工程地质调绘、钻探等勘探手段,工期紧张的条件下难以在短时间内查清隧道的工程地质、水文地质条件。以西北地区某长大越岭隧道为例,为查明该隧道的地质条件,勘察过程中采用了资料收集、遥感判释、工程地质调绘、物探、深浅孔钻探、水文测试及综合测井等综合勘探手段,查明了隧址区内的地层岩性、构造的分布及特征、水文地质条件等,取得了较为准确的地质资料。该工程证明采用上述多种勘探手段相结合的综合勘察方法,可以取得缩短工期、减少勘探量及节约投入的技术、社会和经济效益。At present,a large number of railway and highway projects select the long and large tunnels passing through the mountainous areas with large topographical variations and complicated geological conditions.Under the tight construction schedule,if only traditional exploration methods such as engineering geological surveying and mapping as well as exploratory drilling are used for the geotechnical investigation of long and large tunnels,it is difficult to accurately characterize the engineering geological and hydrogeological conditions of the proposed tunnel in a short period of time and provide detailed and adequate engineering data for the design and construction of the tunnel.This article presents a long mountains tunnel in the northwestern region as an engineering case history.To quantify the geological conditions of the proposed tunnel,comprehensive investigation methods for the data collection,such as,remote sensing interpretation,engineering geology mapping,geophysical exploration,deep and shallow test boring drilling,hydrological testing and comprehensive logging,are used in the explorations.Such comprehensive exploration methods significantly improve the characterization of the soil and rock lithology,structural distribution and characteristics,hydrogeological conditions,etc.in the tunnel project site,and obtained relatively accurate geological data.The project proved that the comprehensive investigation method combining the above-mentioned multiple exploration methods could obtain technical,social and economic benefits of improving the construction schedule,reducing the amount of exploration and cost saving through the comprehensive analysis.

关 键 词：长大隧道 综合地质勘察 综合物探 遥感 应用 

分 类 号：U456[建筑科学—桥梁与隧道工程]