沙坪矿浅埋深风氧化带切巷支护技术研究

Study of Shallow Depth Air Oxidized Zone Cut Roadway Supporting Technology in Shaping Mine

分析了沙坪矿风氧化带切巷支护难点,提出"二次成巷"掘进方式,降低了切巷支护难度,采用高预紧力锚杆锚索支护切巷,数值模拟了支护后切巷围岩应力和塑性区分布特征,矿压监测结果表明切巷变形量很小。

Analyses supporting difficulty of the air oxidized zone cut roadway, advances driving mode of secondary tunneling, reduces the supporting difficulty of cutting roadway, use high preload bolt and cable support the roof strata, numerical simulation of the distribution of rock stress and plastic zone in cut road wall rock, mine pressure monitoring results verified roadway deformation is small.