透射槽波地震勘探在济宁二号煤矿的应用  

Application of transmission trough wave seismic exploration in Jining No.2 Coal Mine

作　　者：周恒心 杨焱钧 程继东 姜希印[1] 刘高强 ZHOU Hengxin;YANG Yanjun;CHENG Jidong;JIANG Xiyin;LIU Gaoqiang(Jining No.2 Coal Mine,Yanzhou Coal Industry Co.,Ltd.,Jining 272071,China;China Coal Science and Industry Group Xi’an Research Institute Co.,Ltd.,Xi’an 710077,China;Luxi Supervision Branch,Shandong Coal Mine Safety Supervision Bureau,Jining 272000,China)

机构地区：[1]兖州煤业股份有限公司济宁二号煤矿,山东济宁272071 [2]中煤科工集团西安研究院有限公司,陕西西安710077 [3]山东煤矿安全监察局鲁西监察分局,山东济宁272000

出　　处：《陕西煤炭》2022年第2期63-66,100,共5页Shaanxi Coal

基　　金：国家重点研发计划课题(2018YFC0807804);国家自然科学基金面上项目(41974209);中煤科工集团西安研究院有限公司科技创新基金项目(2020XAYDC02-03;2020XAYJSQ12)。

摘　　要：济宁二号煤矿煤层结构较复杂,煤层冲刷带、断层等地质构造是影响矿井安全高效回采的主要地质因素,如何查清回采工作面内的煤层冲刷范围与断层的展布情况是亟需解决的难题。基于槽波地震探测原理,通过透射槽波在济宁二号煤矿123;02工作面的应用,分析了槽波单炮、频散、频谱分析及波场速度的响应特征,研究了利用槽波能量预测冲刷带范围和利用滑行波能量控制断层延伸情况的解释方法。研究结果表明,济宁二号煤矿3号煤层低频槽波不发育,但低频滑行波对断层展布方向反应明显;1.8 m厚煤层槽波埃里相频段在400 Hz以上,群速度为1 000~1 100 m/s,滑行波速度为2 000 m/s;对数据进行400~600 Hz的带限滤波,高频槽波速度选取1 000 m/s,通过高频槽波与滑行波能量层析成像,解释了冲刷带的范围及断层的延伸长度;通过回采验证,济宁二号煤矿宜采用槽波地震探测技术查清地质构造,为工作面安全高效回采提供技术保障。The coal seam structure of Jining No.2 Coal Mine is relatively complex.Geological structures such as coal seam scour zones and fault are the main geological factors affecting the safe and efficient mining of the mine.It is an urgent problem to find out the coal seam scour range and fault distribution in the mining face.Based on the principle of trough wave seismic detection, through the application of transmission trough wave in 12302 working face of Jining No.2 Coal Mine, the response characteristics of single shot, dispersion, spectrum and wave field velocity of trough wave are analyzed, and the interpretation methods of predicting the scour zone by using trough wave energy and controlling fault extension by using sliding wave energy are studied.The results show that the low-frequency trough wave is not developed in No.3 coal seam of Jining No.2 Coal Mine, but the low-frequency sliding wave has an obvious response to the fault distribution direction;the trough wave Erie phase frequency band of 1.8 m thick coal seam is above 400 Hz, the group velocity is 1 000~1 100 m/s, and the sliding wave velocity is 2 000 m/s;when filtering the data with band limit of 400~600 Hz, the velocity of high-frequency trough wave is 1 000 m/s, so the range of scour zone and the extension length of fault can be explained by energy tomography of high-frequency trough wave and sliding wave.Through mining verification, Jining No.2 coal mine should use trough wave seismic detection technology to find out the geological structure, so as to provide technical guarantee for safe and efficient mining of the working face.

关 键 词：煤层结构 地震勘探 槽波地震 冲刷带 断层 

分 类 号：P631.4[天文地球—地质矿产勘探] TD82[天文地球—地质学]