TY - JOUR
TI - A method to remove gas hazard around underground thrust faults: Kilometre directional feathery drilling
AU - Xia Tong-Qiang
AU - Ren Hong-Yun
AU - Li Hong
AU - Du Chang-Kang
JN - Thermal Science
PY - 2019
VL - 23
IS - 6
SP - 3767
EP - 3774
PT - Article
AB - In this paper, we take the W2303 working face in Sihe mine in Shanxi Province  in China as a project case, where it has been met with three thrust faults.  The occurrence regularity of coal gas near the faults are studied, and the  gas content around the faults are measured. The comprehensive measures of  gas extraction are carried out, including the wear layer and in-seam  kilometre directional feathery drilling combined with multi-branch  technique. The gas threat around underground thrust faults is effectively  eliminated. This technical engineering practice has a good guiding  significance to other similar mining areas.