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通过对某矿1202(3)上提工作面矿压显现特征的现场实测,记录了支架工作阻力和活柱行程余量沿工作面倾向变化规律;并对两巷围岩变形量和采场覆岩运移特征进行了数值模拟。综合对比得出:由于上提工作面上部基岩厚度较薄,顶板下沉量要大于下部,存在较高的压架危险性,应做重点支护;巷道两帮的位移量大于底板位移量,上帮位移量比下帮位移量大。
Through the on-the-spot survey of the characteristics of ground pressure in the working face 1202 (3) of a mine, the variation of the working resistance and the allowance of the movable column along the working face was recorded. The deformation of the surrounding rock and the influence of the stope Rock migration characteristics are numerically simulated. The comprehensive comparison shows that due to the thin bedrock thickness in the upper part of the working face, the amount of roof subsidence is greater than that in the lower part, and there is a high risk of presser frame. , The upper displacement than the next to help shift a large amount.