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以河林煤矿为研究背景,针对工作面具体生产实践情况,设计了18个观测站3个观测区。分析来压步距和来压峰值得出:1覆岩呈现凸状使工作面基本顶更容易破断和冒落;上覆岩层呈现凹状,在一定程度会减缓基本顶破断和冒落的阻碍作用;2由于沿工作面倾向受倾角变化的影响,致使工作面中部区域和上部区域液压支架所承受的载荷相比下部区域大。
Taking Helin Coal Mine as the research background, three observation areas of 18 observation stations were designed according to the concrete production practice of the working face. Based on the analysis of the pressure step-by-step and the peak pressure value, we can draw the following conclusions: 1 The overburden rock is convex to make the basic roof more easily to break and fall; the overlying rock layer is concave, to a certain extent, ; 2 the load on the hydraulic support in the middle area and the upper area of the work surface is greater than that in the lower area due to the variation of inclination along the working face.