松软破碎煤体小煤柱护巷高预紧力强力锚杆锚索支护研究与应用

小煤柱护巷是工作面上风巷普遍采用的一种布置方式。但随着煤矿地质条件的不断恶化,采用小煤柱护巷技术的巷道变形量明显加大,难以满足生产要求。介绍了常村煤矿在该类巷道中采用最新开发的高预紧力强力锚杆锚索支护系统,有效地控制了巷道的强烈变形,为类似巷道推广该项技术提供了有益的参考。

High Pretightening and Strength Bolt and Rope Supporting Research and Application in Cracked, Loose and Soft Roadway with Small Protection Pillar

Applying small pillar to protecting roadway is a wide used layout in mining roadway. With the depravation of geology condition in colliery, the roadway distortion with small protection pillar increases distinctly and it is hard to meet production need. The new developed strength bolt and rope supporting system with high pretightening force was introduced in this paper. This system can control effectively large distortion of roadway and supply better reference for similar roadways.