煤柱下高应力巷道锚杆支护技术研究

Study on Anchor Bolt Support Technology in High-stress Tunnels under Coal Pillars

通过研究集中应力作用下巷道顶板及两帮的变形机理和破坏情况,确定高应力作用下巷道的支护方式为桁架锚索+锚杆联合控制技术方案。该思路成功地应用于淮南矿业某矿的巷道支护中,取得了良好的支护效果和经济效益,可在类似条件下的高应力巷道中推广应用。

Through studying on the deformation mechanism and failure situation of the tunnel＇s roof and two sides under the effect of stress concentration, this paper determines that the support pattern of the tunnel under the effect of high-stress is anchor rope truss ＋ anchor bolt joint control technical proposal, which has been used successfully in the tunnel support in a coal mine of HuaiNan Mining Group and good supporting effects and economic profits are obtained,and which could be popularized and applied in high-stress tunnels under similar condition.