摘要
在巷道掘进过程中,利用反射槽波探测技术探查巷道侧帮构造发育情况,并准确解释槽波波阻抗反射界面的位置对矿井生产意义重大,但现阶段反射槽波地震解释断层的位置常存在偏差,主要原因是数据处理阶段选取速度存在较大误差。为降低反射槽波速度选取误差,系统分析国内13个煤矿15个煤层的槽波速度特征,总结出反射槽波速度与直达槽波、透射槽波速度的关系。研究发现反射槽波速度高于直达槽波速度3%~12%;低于透射槽波速度1%~6%。将其研究成果引入山西某矿反射槽波探测项目,槽波解释断层位置与探巷揭露位置偏差仅为3 m,取得了较为理想的应用效果。该研究为进一步提高反射槽波探测精度提供了新思路。
During the excavation of the roadway,using reflected in-seam waves detection technique to explore the structure of roadway and accurately interpret the wave impedance interface is of signality for mine production.The method of detecting the position of faults by reflected in-seam waves is usually inaccurate,which is mainly caused by the selected deviation of reflected in-seam waves velocity.In order to reduce the selected deviation of reflected in-seam waves velocity,this paper analyzed the features of reflected in-seam waves velocity of fifteen coal seam in thirteen coal mines and the velocity relationships of reflected in-seam waves,direct in-seam waves and transmitted in-seam waves were summarized,it was found that the velocity of the reflected in-seam waves was 3%-12%higher than that of the direct in-seam waves,and 1%-6%lower than that of the transmitted in-seam waves.The research results were introduced to the reflected in-seam seismic detection project of a coal mine in Shanxi Province,and the fault location interpreted by the in-seam seismic exploration deviated only 3 m from that exposed by roadway,which proved the application effect was well.This research provides a new idea for improving the detection accuracy of reflected in-seam waves.
作者
杨焱钧
朱书阶
张孝文
王季
YANG Yanjun;ZHU Shujie;ZHANG Xiaowen;WANG Ji(Xi’an Research Institute Co.Ltd.,China Coal Technology and Engineering Group Corp.,Xi’an 710077,China)
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2020年第5期218-224,共7页
Coal Geology & Exploration
基金
中煤科工集团西安研究院有限公司科技创新项目(2019XAYQN02)。
关键词
反射槽波
断层
速度分析
直达槽波
透射槽波
reflected in-seam waves
fault
velocity analysis
direct in-seam waves
transmitted in-seam waves
