摘要
在陷落柱发育矿井工作面设计阶段,需要利用现有一条巷道预先探测将要布置工作面的陷落柱情况,反射槽波法可以对巷道两侧一定尺度及位置的陷落柱进行探测。通过建立正演模型,采用数值模拟方法,研究反射槽波探测陷落柱的分辨能力,分析反射槽波准确探测陷落柱的影响因素,指导实际槽波资料的采集、处理与解释。研究表明,通过正演模拟反射槽波对陷落柱直径、不同道、炮间距、离巷道距离等参数可知,加密道炮间距可以探测长轴直径10 m和距巷道100 m的陷落柱一侧边界;反射槽波探测陷落柱实际应用以10 m炮距、5 m道距为最佳观测系统;反射槽波对工作面布置提供了可靠的地质保障,影响探测精度的因素较多,加密观测系统与绕射波偏移算法可提高准确度。研究成果可为陷落柱发育矿井工作面布置及巷道开拓提供技术参考。
In the design stage of the mining face with the development of the collapse column,it is necessary to use the existing roadway to detect the situation of the collapse column in the working face to be arranged in advance.The reflection groove wave method can detect the falling column with certain scale and position on both sides of the roadway.Through the establishment of forward model and numerical simulation method,the resolution of reflected trough wave detecting subsided column is studied,and the influencing factors of accurately detecting subsided column by reflected trough wave are analyzed,so as to guide the collection,processing and interpretation of actual trough wave data.The research shows that through forward simulation of reflected trough wave on parameters such as collapse column diameter,different lanes,shot spacing and distance from roadway,the shot spacing of infill lane can detect the collapse column side boundary with long axis diameter of 10 m and distance from roadway of 100 m.10 m offset and 5 m track distance are the best observation system in the practical application of detecting subsided column with reflected trough wave.The reflected trough wave provides a reliable geological guarantee for the layout of working face,and there are many factors affecting the detection accuracy.The accuracy can be improved by densifying the observation system and the diffraction wave migration algorithm.The research results can provide technical reference for the layout of working face and roadway development in the mine with developed collapse column.
作者
马彦龙
Ma Yanlong(Xi′an Research Institute of China Coal Technology and Engineering Group,Xi′an 710077,China)
出处
《能源与环保》
2021年第5期138-144,共7页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家重点研发计划资助项目(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资助项目(2019XAYMS29)。
关键词
反射槽波
陷落柱
正演模拟
reflection trough wave
collapse column
forward modeling
