摘要
针对神东保德煤矿81307工作面顶板砂岩厚度大、强度高,在工作面初次放顶时极易造成大面积悬顶,安全隐患大的问题。采用水力压裂技术对工作面坚硬完整顶板进行弱化处理,并通过瞬变电磁法对水力压裂效果进行了验证,瞬变电磁探测结果中的相对高阻异常区应该为水力压裂后裂隙发育区,与实际顶板跨落区域完全吻合,取得了良好的应用效果。
The roof sandstone of No.81307 working face in Baode Coal Mine is of great thickness and high strength.It is easy to cause a large area of suspended roof during the first roof caving and has a great potential safety hazard.Because the relatively high resistivity anomaly area in transient electromagnetic detection is the fracture development area,hydraulic fracturing technology is used to weaken the hard roof of working face,and the effect of hydraulic fracturing is verified by transient electromagnetic,and good application results are obtained.
作者
庞贵艮
PANG Gui-gen(Baode Coal Mine,Shendong Coal Group Co.,Ltd.,Baode 036600,China)
出处
《陕西煤炭》
2019年第A02期22-26,共5页
Shaanxi Coal
关键词
水力压裂
初次放顶
瞬变电磁
hydraulic fracturing
first roof caving
transient electromagnetic
