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针对赵家坝煤矿开切眼变形大、成型困难、支护难度大的现状,结合导硐爆破技术和分次支护技术,提出了一种新型实用的急倾斜“三软”薄煤层综采开切眼导硐施工技术。有效地解决了煤、矸运输问题,安全、可靠地完成了开切眼施工,对相似工程条件下的巷道施工具有借鉴意义。
In view of the large open deformation of Zhaojiaba coal mine, the difficulty of forming and the difficulty of supporting, a new type of practical thin coal seam with steep inclination and “three soft” is proposed combining with the guide tunnel blasting technology and the sub-support technology. Fully mechanized mining opening eye tunnel construction technology. It effectively solves the transportation problems of coal and rock and safely and reliably completes the open-cut construction, which has reference significance to roadway construction under similar engineering conditions.