三软煤层巷道掘进支护实践应用研究

Study on the Practice and Application of Roadway Driving in Three Soft Coal Seam

大同煤矿集团四台矿在三软条件的8701运巷掘进施工中,应用新型锚杆支护工艺,增加底部塑性区底角锚杆,强化帮锚索双排三花布置支护,强化顶锚索三排五花布置,维持了巷道的稳定,积累了软岩煤巷锚杆支护工艺经验。

In the construction of Sitai Coal Mine in Datong Coal Mine Group, the new bolt supporting technology is applied in the 8701 roadway driving of three soft conditions, adding the bottom angle anchor in the bottom plastic zone, strengthening the supporting of the double row and three flowers of the anchor cable, strengthening the three row and five flower arrangement of the top anchorage cable, maintaining the stability of the roadway, and accumulating the experience of the bolt supporting technology in the soft rock coal roadway.