杜儿坪矿提高岩巷掘进速度的实践

摘要

杜儿坪矿选取切缝药包定向断裂控制爆破技术煤矿进行岩巷掘进，并通过改革施工工序和喷混凝土工艺及喷混凝土装备对该技术进行优化后，掘进效率大大提高，取得了良好的效果，为岩巷掘进方法的实践发展提供了新的途径。%Directional fracture controlled blasting with cutting seam cartridge is used in Du＇erping mine rock driving. After the technique optimization by changing the construction order, shotcrete technique and equipments, it increased the driving efficiency greatly and achieved better effect, which provides a new approach for rock driving practice.