深井高地应力煤巷采动影响研究

Research on Effect of Stress Coal Roadway in Deep Mine

以深井高地应力矿井申南凹煤矿的煤巷为例,分析了20104运输顺槽巷道变形特征及机理,建立了巷道模型并使用FLAC^(3D) 数值模拟软件分别对距工作面不同距离的巷道围岩破坏情况进行了分析,得出了煤巷两帮及顶板破坏及扩散规律,即破坏首先发生于两帮和顶板中部,之后向两侧扩散,最终导致整个断面的破坏。对受一次采动和二次采动影响的巷道变形量进行了监测,得出了深井高应力多次采动对巷道破坏的影响程度的差异并对原支护方案进行了优化。

Taking the coal roadway of Shennan＇ ao coal mine in high pressure field as an example, analyzes the deformation characteristics and mechanism of 20104 tunnel roadway, establishes the roadway model and uses FLAC3D numerical simulation software to separate the surrounding rock of different distance from the working face, the damage and the diffusion rule of the two holes and the roof are obtained, that is, the damage first occurs in the middle of the two sides of the wall and the roof, and then spread to both sides, leading to the destruction of the whole section. The deformation of the roadway affected by first mining and secondary mining is monitored, and the difference of the influence of the different well mining on the roadway damage is obtained and the original support scheme is optimized.