井下钻孔测井技术在煤矿不良地质体探测中的应用  

Application of underground borehole logging technology in detection of unfavorable geological bodies in coal mines

作　　者：李立 杨东辉[1,2] 陈晓鹏 张星星 樊聪 LI Li;YANG Donghui;CHEN Xiaopeng;ZHANG Xingxing;FAN Cong(School of Coal Engineering,Shanxi Datong University,Datong 037003,China;The Cultivation Base of Shanxi Key Laboratory of Coal Mine Water Jet Technology and Equipment,Shanxi Datong University,Datong 037003,China)

机构地区：[1]山西大同大学煤炭工程学院,山西大同037003 [2]山西大同大学煤矿水射流技术与装备厅市共建山西省重点实验室培育基地,山西大同037003

出　　处：《晋控科学技术》2025年第1期33-38,共6页Jinneng Holding Science and Technology

基　　金：山西省重点研发计划项目(202304290000002);山西省基础研究计划(自由探索类)项目(20210302124355);大同市基础研究计划项目(2023055);山西大同大学产学研科研项目(2022CXY18);山西大同大学研究生科研创新项目(2024SJCX53)。

摘　　要：利用矿用侧向电阻率视频成像测井技术有效探测了晋能控股煤业集团马道头煤矿煤层中的不良地质体的表现特征。研究取得以下成果:(1)该地区煤岩的具体的物性参数表现特征为:煤的视电阻率呈高值,3000~4500Ω?m左右,是围岩的2~3倍以上,且与围岩呈突变接触;煤的自然伽马曲线呈低值,平均147 API,与围岩呈突变接触。(2)断层、陷落柱等不良地质体中煤的电信号与其它岩石的物性存在显著差异,可作为判断标准。(3)基于孔—孔空间联合测井数据的三维等值线图构建方法,实现了不良地质体电性响应的精细化表征。The performance characteristics of unfavorable geological bodies in the coal seam of the Madaotou Coal Mine of Jinneng Holding Coal Group were effectively detected by using mine-used lateral resistivity video imaging logging technology.The results show that:(1)The specific physical parameters of coal rock in this area are characterized.The apparent resistivity of coal is high,about 3000~4500Ω⋅m,which is more than 2~3 times that of surrounding rock,and it is in sudden contact with surrounding rock.The natural gamma curve of coal is low,with an average of 147 API,which is in sudden contact with surrounding rock.(2)The electrical signal of coal in fault,collapse column and other unfavorable geological bodies is significantly different from the physical properties of other rocks,which can be used as a criterion.(3)A novel method for constructing three-dimensional contour maps based on hole-to hole spatial joint logging data was proposed,achieving detailed characterization of the electrical responses of adverse geological bodies.

关 键 词：钻孔测井 视电阻率 不良地质体 地质解释 孔—孔空间组合 

分 类 号：P631.8[天文地球—地质矿产勘探]