级联反演在煤矿盾构机掘进路线优化中的应用  

Application of Cascade Inversion in Tunneling Route Selection of Coal Mine Shield Machine

作　　者：张新 石贵飞 师素珍[3] 时靖雪 姚学君 谢东山 王坤明 Zhang Xin;Shi Guifei;Shi Suzhen;Shi Jingxue;Yao Xuejun;Xie Dongshan;Wang Kunming(Huayang New Material Technology Group Co.,Ltd.,Yangquan,Shanxi 045000;School of Geoscience and Surveying Engineering,China University of Mining and Technology-Beijing,Beijing 100083;State Key Laboratory for Coal Resources and Safety Mining,China University of Mining and Technology-Beijing,Beijing 100083)

机构地区：[1]华阳新材料科技集团有限公司,山西阳泉045000 [2]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [3]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《中国煤炭地质》2022年第9期43-48,共6页Coal Geology of China

基　　金：中央高校基本科研业务费专项资金资助(2022JCCXMT01);煤炭资源与安全国家重点实验室开放基金项目(SKLCRSM19ZZ02);煤炭资源与安全开采国家重点实验室-北京高等学校卓越青年科学家计划项目2020年联合基金项目(BJJWZYJH01201911413037)。

摘　　要：盾构机在煤矿岩巷中的使用极大地提高了煤矿生产的效率,煤层及其围岩的精细刻画对于盾构机安全掘进路线的选取至关重要。为了得到煤层周围岩层岩性的精细分布特征,以泊里矿区为例,首先利用基于模型的波阻抗反演划分煤及灰岩;针对难以识别的砂泥岩体,选取了对砂泥岩敏感的自然伽马曲线,并将其重构为拟声波曲线进行拟声波反演加以区分,进而得到煤系地层岩性的综合预测成果。在此基础上,通过层位追踪获得各岩层顶底界面,采用精确的时深转换技术将层位数据从时间域转换到深度域,使其可以直观地反映岩层的分布特征,实现了15#煤层顶板及其上部岩层岩性的精细刻画。结果表明:该方法可以精确地预测出煤层及其围岩的空间分布特征,为矿区盾构机掘进路线的选定提供地质依据。The application of shield tunneling machine in coal mine greatly improves efficiency of coal mine production.The fine characterization of coal seam and surrounding rock is very important to select the safe tunneling route for shield tunneling machine.Taking Poli mining area as an example,in order to obtain the fine distribution characteristics of lithology around coal seam,the coal and limestone are firstly differentiated by wave impedance inversion based on model.For sand-mudstone,natural gamma ray curve sensitive to mudstone is selected and reconstructed into quasi-acoustic curve to distinguish them from other quasi-acoustic inversion,so as to obtain the comprehensive prediction results of coal measure formation lithology.On this basis,the top-to-bottom interface of each rock layer is obtained through horizon tracking,and the accurate time-depth conversion technology is used to convert horizon data from time domain to depth domain,so that it can directly reflect the underground condition of the rock layer,and the fine characterization of the roof and the upper rock layer of No.15 coal seam is realized.The results show that this method can accurately predict the spatial distribution characteristics of coal seam and surrounding rock,and provide geological basis for the selection of tunneling route of shield tunneling machine in mining area.

关 键 词：波阻抗反演 拟声波反演 时深转换 煤系地层 盾构机掘进路线 

分 类 号：P631[天文地球—地质矿产勘探]