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某矿3203工作面轨道平巷在原支护条件下巷道围岩变形严重且支护体失效。针对该轨道平巷的生产地质特点,利用数值模拟软件UDEC4.0,分别对3种不同支护方案下支护效果及其塑性区进行研究,分析得出实现其巷道围岩稳定关键在于能否有效控制两帮煤体的变形,进而提出高预应力锚杆(索)结合帮部注浆加固的综合支护方案。现场工业性试验及实测表明,该支护方案有效控制了巷道围岩变形。
3203 face of a mine orbital drift in the original conditions of the surrounding rock deformation and support body failure. According to the geological characteristics of the production of the railway lane, numerical simulation software UDEC4.0 is used to study the support effect and its plastic zone under three different support schemes respectively. The key point of whether the surrounding rock is stable Effectively control the deformation of two coal gangues, and then put forward a comprehensive support scheme of high prestressed anchor (cable) combined with the help of grouting reinforcement. Field test and field test show that the support scheme effectively control the deformation of surrounding rock.