张吉怀铁路隧道超前预报技术应用研究  

The research on the application of geological prediction technology to Zhangjihuai railway tunnel

作　　者：蔡盛[1] CAI Sheng(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《物探与化探》2021年第5期1275-1280,共6页Geophysical and Geochemical Exploration

基　　金：住房和城乡建设部深地资源勘查开发项目“城市地下空间开发地下全要素信息精准探测技术与装备”(2019YFC0605101)。

摘　　要：张吉怀铁路地质条件复杂,构造、岩溶发育,施工风险大。依托张吉怀铁路建设阐述了铁路隧道超前地质预报现场工作难点、预报原则、物探关键技术,总结了铁路隧道超前地质预报应用的成套技术与经验。具体实例表明:采用五步法进行超前预报的施工指导,利用地表勘察资料划分重点段落进行宏观控制;采用综合物探技术,长距离预报与短距离预报相结合,排除物探多解性;以超前钻探对物探异常进行验证,使预报工作形成闭环,有利于规避风险,减少误报错报。张吉怀铁路超前预报成套技术具有实用性与可行性,具有一定的推广价值。The geological conditions of Zhangjihuai railway is complex,the structure and karst are extensively developed,and hence the risk of construction is high.Based on the construction of Zhangjihuai railway,this paper expounds the difficulties,prediction principles and key geophysical techniques of the railway tunnel geological prediction,and summarizes a set of technologies for the railway tunnel geological prediction.The practical examples show that the five-step method is useful in geological prediction,the surface exploration data are important for dividing the key sections for macroscopic control,the long-distance prediction and short-distance prediction of geophysical exploration technology should be used together,and the advance drilling must be used to verify the geophysical exploration anomalies,so that the prediction work can be a closed-loop,which is conducive to avoiding risks and reducing false reports.The whole set of advanced forecast technologies of Zhangjihuai railway is feasible and useful,which is worthy of spreading.

关 键 词：地质预报 综合物探 构造 岩溶 铁路隧道 

分 类 号：P631.4[天文地球—地质矿产勘探]