基于直流电阻率法探测隧道上覆地层赋水性  

Tunnel Overlying Strata Water-bearing Property Prospecting Based on Galvanic Resistivity Method

作　　者：沈哲[1,2] 杨振威[3,4] 李宏伟 Shen Zhe;Yang Zhenwei;Li Hongwei(Henan Bureau of Coal Geological Exploration,Zhengzhou,Henan 450046;Academican Workstation of Henan Coalfield Geological Bureau, Zhengzhou,Henan 450046;School of Resources and Environment,Henan Polytechnic University,Jiaozuo,Henan 454000;Collaborative Innovation Centerof Coalbed Methane and Shale Gas for Central Plains Economic Region,Henan Province,Jiaozuo,Henan,454000)

机构地区：[1]河南省煤田地质局,郑州450046 [2]河南省煤田地质局院士工作站,郑州450046 [3]河南理工大学资环学院,河南焦作454000 [4]中原经济区煤层(页岩)气河南省协同创新中心,河南焦作454000

出　　处：《中国煤炭地质》2019年第4期75-79,共5页Coal Geology of China

基　　金：国家自然科学基金(41202084);河南省教育厅重点基金项目(15A170008)

摘　　要：浅层地下水可导致黄土覆盖区隧道淋水、变形,带来严重的安全隐患,为查明黄土覆盖区隧道上覆地层赋水性特征和导水通道,为后期水害治理和隧道维护提供重要依据。在研究区复杂探测环境下布置了4条直流电法勘探线,经过数据处理,将视电阻率拟断面图直接用于地质解释,发现电性剖面高电阻率区域与隧道位置吻合较反演断面图好;结合地质资料,查明了黄土地层富水区域,并指出了可疑导水通道。研究表明,视电阻率拟断面图可准确的进行地质解释,常规电阻率法勘探在探查黄土区隧道地层赋水性方面可以发挥重要的作用。The shallow groundwater may lead to loess covered area tunnel water drenching and deformations bring about serious potential safety hazard.To identify tunnel overlying strata water-bearing features and water conducted channel can provide important basis for subsequent water hazard control and tunnel maintenance.Under the study area complex prospecting environment has layout 4 direct current prospecting lines.After data processing,taking the apparent resistivity quasi-section directly used in geological interpretations has found that the high resistivity region on electric section tally with tunnel position better than on the inversion section.Combined with geological data have identified loess strata water-rich zone and pointed out suspected water conducted channel.The study has shown that apparent resistivity quasi-section can carry out geological interpretation accurately,thus the conventional resistivity method can play an important role in loess covered area tunnel strata water-bearing property prospecting.

关 键 词：黄土区 直流电法 隧道 赋水性 

分 类 号：P631.3[天文地球—地质矿产勘探]