利用极化率参数监测煤矿滞后突水的可行性  

The feasibility of monitoring lagging water inrush by using parameter of polarizability

作　　者：刘志新[1] 薛国强[2,3] 张小楷 LIU ZhiXin;XUE GuoQiang;ZHANG XiaoKai(School of Resource and Geosciences,China University of Mining and Technology,Xuzhou 221116,China;Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;The Second Engineering Survey Institute of Guizhou Provincial Bureau of Geology and Mineral Resources,Zunyi 563000,China)

机构地区：[1]中国矿业大学资源与地球科学学院,徐州221116 [2]中国科学院地质与地球物理研究所,中国科学院矿产资源研究重点实验室,北京100029 [3]中国科学院大学地球与行星科学学院,北京100049 [4]贵州省地矿局第二工程勘察院,遵义563000

出　　处：《地球物理学报》2022年第8期3186-3197,共12页Chinese Journal of Geophysics

基　　金：国家自然科学基金项目(41974128,42030106);自然资源部煤炭资源勘查与综合利用重点实验室开放课题(KF2020-3)联合资助.

摘　　要：煤矿工作面底板下方隐伏断层、陷落柱等小尺度地质构造不仅难以识别,而且在采动影响下,还将进一步发育,形成潜在的隐伏导水通道,容易发生滞后突水.本文提出通过实时监测极化率参数的变化实现对由小规模地质构造引起的煤矿滞后突水预警.采用三维激发极化法装置形式,利用理论分析、数值模拟和物理模型实验相结合的方法,发现采空区底板下陷落柱构造突水过程中极化率参数变化规律.随着水位上升,异常区极化率逐渐增大,异常位置更加明显,可根据极化率参数的极大值点的位置,通过交汇作图方法确定构造异常体中心的平面位置,可根据极化率参数值大小变化监测其水位变化.结果表明通过对极化率参数的监测,对隐伏构造突水过程进行及时预警具有可行性.Small-scale geological structures such as concealed faults and collapsed columns under the coal mining face floor are not only difficult to be identified,but also they will develop to be potential concealed water channels and it is possible to result in lagging water inrush.This paper proposes the idea of realizing the early warning of lagging water inrush in coal mines through real-time monitoring of changes in polarizability parameters caused by small-scale geological structures.Combination with theoretical analysis,numerical simulation and physical model experiment of three-dimensional direct current method was used to study the change law of the polarizability parameter during the water inrush process of the collapse column structure under the goaf floor.The research results show that the plane position of the small structure water body can be determined by position of the maximum point of the polarizability parameter.Finally,the research results shows that it is feasible that early warning of water inrush in concealed structures by monitoring of the polarizability parameters.

关 键 词：小规模地质构造 极化率 滞后突水 三维直流电法 动态监测 

分 类 号：P631[天文地球—地质矿产勘探]