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针对山地浅埋煤层开采过程中工作面出现的矿压显现强烈,支架被压死或支架尾梁与顶梁分离等现象,通过建立山地浅埋煤层基本顶初次垮落时岩块触矸前控制基本顶滑落失稳的结构力学模型对山地浅埋煤层开采工作面支架合理工作阻力进行了研究。研究表明:山地浅埋煤层开采过程中基本顶出现滑落失稳的可能性相对较大,且基本顶的初次破断具有不对称性,通过计算得出发耳井田1、3煤层山地浅埋煤层工作面液压支架工作阻力应大于5 773 kN。
Aiming at the phenomenon of strong underground pressure in working face during the mining of shallow seam in mountainous area, the stent being crushed or the separation of support beam and top beam, the rockfill gangue pre-rock control The structural sliding mechanics model of the basic roof sliding is used to study the reasonable working resistance of the support in the shallow coal seam mining face in mountainous area. The results show that there is a high possibility of slipping and falling instability in the basic roof during the mining process of the shallow seam in mountainous area, and the initial rupture of the basic roof is asymmetric. By calculation, Hydraulic support work resistance should be greater than 5 773 kN.