Application of reflected in-seam waves in detecting small structure in Heshun mining area of Yangquan Coal Group
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摘要: 为查明阳煤和顺新大地煤矿15304工作面内构造发育情况,在与其紧邻的15305工作面回风巷侧帮向该工作面内开展反射槽波探测,采用反射槽波CDM (Channel-Wave Diffractive Migration)成像法对工作面内构造进行成像。以1 025 m/s的槽波速度进行CDM成像计算,成像结果显示在工作面内存在两个延伸长度大于500 m的强反射界面。第一个强反射界面为巷道实见的DF5断层,另一个强反射界面与隐伏的DF6断层的延展方向一致。结果表明,反射槽波探测技术在阳煤和顺矿区小构造探查中是有效的,探查结果为矿井下一步工作面的布置和巷道开拓提供地质依据。Abstract: In order to identify the structures in the working face 15304 of Xindadi Coal Mine of Yangquan Coal Group in Heshun mining area, the availability of reflection channel wave detection technology was carried out in the side wall of the air return roadway of the adjacent working face 15305 CDM imaging was used to image the structures in the working face. CDM imaging was calculated with channel wave velocity of 1025 m/s, the resulting image shows that there were two strong reflecting interfaces with extension length of more than 500 m inside the working face.The first reflecting interface was the fault DF5 which was exposed in the tunnel engineering, the other was consistent with the extension direction of the concealed fault DF6. The results show that the reflection channel wave detection technology is effective for the exploration of small structures in Heshun mining area, and provides geological basis for the design of working face and roadway development of coal mine.
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Key words:
- channel wave /
- reflection method /
- coal seam /
- fault /
- diffraction imaging
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