浅层地震勘探技术在老窑采空区探测中的应用研究

根据榆林市张三沟矿煤层赋存的地质条件特点，采用浅层二维地震地球物理勘探技术进行采空区探测试验。通过对测区进行试验，选取合理的激发震源、垂叠次数、道间距等施工参数，采用优化后的参数对1.2162km的区域进行探测，并在地表施工钻孔验证探测成果。结果表明：在地形较为平坦的区域(夯重设备可以到达的区域)，可采用夯重激发，单点垂叠次数为14次或16次，4m道间距接收|在地形复杂的区域，可采用人工锤击激发方式，单点垂叠次数为16次或18次，2m道间距接收|将以上参数应用于现场共探测出3处异常区，2处推断为采空区，1处推断为煤层结构变化区，并通过钻探成果验证了浅层二维地震可有效探测浅部采空区。

Experimental study on shallow seismic exploration technology in the detection of old kiln goaf

According to the characteristics of geological conditions in the shallow coal seam of a mine in Yulin City, the shallow two-dimensional seismic geophysical exploration technology is used to detect the goaf, and the reasonable excitation source, hammer stack number and path are selected by testing the survey area. For the construction parameters such as spacing, the 2-2 coal mining area is detected by shallow 2D seismic exploration technology in the 1.2162km2 area, and the detection results are verified in the surface construction drilling. The detection results show that: in the area where the terrain is relatively flat (the area where the heavy equipment can reach), the heavy excitation can be used, and the number of single-point sag is 14 or 16 times, and the 4m track is received; In areas with complex terrain, manual hammering excitation can be used. The number of single-point sag is 16 or 18 times, and the spacing is 2m. It is applied to the site to detect 3 anomalous areas, and 2 places are inferred as goafs. One place is inferred to be a coal seam structural change zone, and it is verified by drilling results that the shallow two-dimensional earthquake can effectively detect the shallow goaf.