利用矿井瞬变电磁法探测工作面顶板岩层含水性的研究  

Study of Using Mine Transient Electromagnetic Method to Detect Water-bearing Properties of Roof Strata

作　　者：孔德山[1] 程久龙[2] 朱若军[1] 王玉和[2] 姜国庆[2] 

机构地区：[1]国投新集能源股份有限公司刘庄煤矿,安徽淮南236232 [2]山东科技大学矿山灾害预防控制教育部重点实验室,山东青岛266510

出　　处：《矿业安全与环保》2010年第3期31-33,共3页Mining Safety & Environmental Protection

基　　金：国家自然科学基金资助项目(50774051;50974081);国家重点基础研究发展计划(973计划)项目(2007CB209406);山东省"泰山学者"建设工程专项经费资助项目

摘　　要：煤层顶板水害对煤矿安全生产构成了严重威胁,为保证工作面正常回采,必须在开采前查明顶板岩层含水性。介绍了矿井瞬变电磁法在煤矿井下探测的基本原理、工作方法和技术特点,给出全空间条件下磁偶源晚期视电阻率表达式和不同瞬变延时所对应深度表达式,结合工作面顶板岩层含水性探测实践,探讨了资料解释方法和效果。研究表明,矿井瞬变电磁法能够有效地确定工作面顶板岩层富水位置和范围,可为矿井水害防治提供可靠依据。The water hazard in the seam roof constitutes a serious threat to the safe production in a coal mine, so it is necessary to detect the water-bearing properties of the roof strata before coal mining in order to guarantee the normal extraction of the working face. This paper gave a description of the basic principle, working method and technical features of the mine transient electromagnetic method used for detection in the coal mine, gave an apparent resistivity expression in the later period of the magnetic dipole source and the depth expression corresponding to different transient electromagnetic time delays under the whole -space condition, and made a probe into the data interpretation and effect according to the detection practice of the water-bearing properties of the roof strata. The study indicated that the mine transient electromagnetic method can effectively determine the location and range of water-bearing roof strata above the working face, so it can provide a realible basis for the prevention and control of coal mine water hazard.

关 键 词：矿井瞬变电磁法 顶板岩层含水性 探测 水害预报 

分 类 号：TD745.21[矿业工程—矿井通风与安全]