离线式随掘地震在断层探测中的应用  

Application of off-line simultaneous excavationseism in fault detection

作　　者：岳博 杨焱钧 张云宁 王子琛 Yue Bo;Yang Yanjun;Zhang Yunning;Wang Zichen(Shandong Coal Science and Technology Research Institute Branch,Yankuang Energy Group Co.,Ltd.,Jinan 250000,China;Xi'an Research Institute Co.,Ltd.,China Coal Technology&Engineering Group,Xi'an 710077,China)

机构地区：[1]兖矿能源集团股份有限公司山东煤炭科技研究院分公司,山东济南250000 [2]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《煤炭与化工》2023年第2期64-67,共4页Coal and Chemical Industry

基　　金：国家重点研发计划课题(2020YFB1314002);中煤科工集团西安研究院有限公司科技创新项目(2020XAYDC02-03、2020XAYJSQ12)。

摘　　要：三维地震成果显示济宁二号煤矿103下03胶运巷迎头前方发育1条最大落差270 m的八里铺断层,断层的存在不仅破坏了隔水层的完整性,还缩短了下盘工作面与上盘奥灰含水层之间的距离,提高了使用井下钻探方式查明八里铺断层位置的危险性。针对这一情况,在探测目标明确且目标地质体在探测距离内的条件下,本文探索使用YTZ3 (B)型地震仪在103下03工作面胶运巷开展“离线式”随掘地震探测八里铺断层位置与延展特征。试验结果显示,“离线式”随掘地震与三维地震综合解释的断层边界基本一致,两种探测方法互相印证,提高了断层边界位置的探测精度,也表明该技术可为巷道掘进前方地质构造预测预报提供科学指导。Three-dimensional seismic results showed that a fault with a maximum drop of 270 m was developed in front of the 103 lower 03 rubber haulage roadway in Jining No.2 coal mine.The existence of the fault not only destroyed the integrity of the aquifuge,but also shortened the distance between the footwall working face and the upper Ordovician limestone aquifer,which improved the risk of using underground drilling to find out the location of the fault.In view of this situation,under the condition that the detection target was clear and the target geological body was within the detection distance,this paper explored the use of YTZ3(B)seismograph to carry out'off-line'simultaneous excavation seismic detection of Balipu fault location and extension characteristics in No.103 lower 03 face.The test results showed that the fault boundary comprehensively interpreted by the'off-line'simultaneous excavation seismic and three-dimensional seismic was basically the same.The two detection methods confirmed each other,which improved the detection accuracy of the fault boundary position.The study also showed that the technology could provide scientific guidance for the prediction of geological structure in front of roadway excavation.

关 键 词：随掘地震 断层 超前探测 

分 类 号：P631[天文地球—地质矿产勘探]