井下瞬变电磁技术在不规则工作面顶板富水性探测中的应用  

Application of underground transient electromagnetic technology in the detection of water content in irregular working face roof

作　　者：雍自春 YONG Zi-chun(China Energy NingXia Coal Group Energy Engineering Co.,Ltd.,Environmental Safety Engineering Branch,Yinchuan 750021,China)

机构地区：[1]国能宁夏煤业能源工程有限公司环境安全工程分公司,宁夏银川750021

出　　处：《煤炭科技》2023年第6期173-176,共4页Coal Science & Technology Magazine

摘　　要：介绍了井下瞬变电磁技术在金凤煤矿011811不规则工作面顶板富水性探测中的应用,根据不规则工作面实际情况进行探测设计,按照设计进行观测系统布置和井下数据采集,分段建立坐标,视电阻率计算、深度转化,绘制不规则工作面瞬变电磁探测成果图。实践表明,不规则工作面瞬变电磁成果图绘制方法可以应用于各种形状的工作面,绘制的成果图与工作面形状一致,物探成果更加直观,异常位置与实际揭露情况更加吻合,解释成果更加准确。This paper introduced the application of transient electromagnetic technology in the detection of water content in the roof of irregular working face at the No.011811 Coal Mine of Ningxia Jinfeng.To make detection design on the basis of actual shape of coal mining working surface,conduct observation system deployment and collect data with design.To build coordinate system and calculate coordinate by sections and apparent resistivity.Based on the actual situation of the irregular working face,the detection design was carried out,and the observation system layout and underground data collection are carried out according to the design.Coordinates are established in sections,and the apparent resistivity is calculated and converted into depth.The transient electromagnetic detection result map of the irregular working face is drawn.Practice has shown that the method of drawing transient electromagnetic result maps for irregular working faces can be applied to various shapes of working faces.The result maps drawn are consistent with the shape of the working face,making the geophysical results more intuitive,the abnormal positions more consistent with the actual exposed situation,and the interpretation results more accurate.

关 键 词：井下瞬变电磁 不规则工作面 富水性探测 白化 

分 类 号：TD713[矿业工程—矿井通风与安全]