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通过对永华集团嵩山矿2201工作面底板比压的测试,得出煤层底板容许比压和容许刚度,判断其底板为II类松软底板。通过对ZF2200/16/24综放四支柱液压支架的受力分析,得出了支架底座比压分布特征,计算出综放四支柱支架底座比压最大值,经校核,该矿选择的四柱式ZF2200/16/24型低位放顶煤支架能够满足2201工作面的底板比压要求。
Through the test of floor pressure of 2201 working face in Songshan Mine of Yonghua Group, the allowable specific pressure and allowable rigidity of coal seam floor are obtained, and the bottom plate is judged to be II type soft floor. Through the analysis of the force of the four pillar hydraulic supports in ZF2200 / 16/24 fully mechanized top coal caving, the specific pressure distribution characteristic of the support base is obtained and the maximum specific pressure of the four pillar supports is calculated. After checking, the selected four pillar Type ZF2200 / 16/24 low caving support can meet 2201 working face floor pressure requirements.