基于气驱水的煤系岩石电阻率变化实验研究  

Experimental Study on Resistivity Variation of Coal Measure Rocks Based on Displacing Water by Gas

作　　者：林井祥 张继忠 唐志超 张添新 LIN Jingxiang;ZHANG Jizhong;TANG Zhichao;ZHANG Tianxin(School of Mining Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学矿业工程学院,哈尔滨150022

出　　处：《煤炭技术》2022年第7期129-133,共5页Coal Technology

基　　金：黑龙江省高等学校基本科研业务费支持项目(Hkdct201802)。

摘　　要：为分析煤系岩石电阻率变化规律,通过气驱水的方式使岩石含水饱和度发生变化,测定不同含水饱和度时岩石电阻率,研究气驱作用下含水饱和度、岩石电阻率指数、渗透率与岩石电阻率变化规律。结果表明,岩石骨架结构本身不具备导电性,岩石导电是由介于骨架间的充填物质表面离子通过互相交换位置来完成。岩石电阻率指数与电阻率增速存在正相关性,岩石电阻率与岩石渗透率存在正相关性。该研究可为煤矿充水水源勘查提供理论依据。In order to analyze the change rule of resistivity of coal-bearing rocks,water saturation of rocks is changed by gas flooding,and rocks resistivity is measured when water saturation is different.The change rule of water saturation,rock resistivity index,permeability and rock resistivity under gas flooding is studied.The results show that the rocks skeleton structure has no conductivity,the rock conductivity is achieved by the exchange of ions on the surface of filling material between the skeleton.Rocks resistivity index has a positive correlation with resistivity increase,and rocks resistivity has a positive correlation with rocks permeability.This research can provide theoretical basis for the exploration of coal mine water source.

关 键 词：气驱水 煤系岩石 含水饱和度 岩石电阻率 

分 类 号：TD745[矿业工程—矿井通风与安全]