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针对深部煤炭资源开采受底板奥陶系灰岩高水压的威胁问题,基于可拓学理论将9个因素作为物元模型的事物特征,利用层次分析法确定影响底板突水各因素的权重,建立了底板突水四级危险性物元评价模型,确定合适经典域和节域,并对盘道煤业3210工作面进行了底板突水危险性评价。结果表明物元模型能够定量化反映突水危险性程度。根据该模型,3210工作面突水危险性等级为较安全,突水系数为0.024 5~0.026 0 MPa/m,远远小于构造破坏块段突水系数临界值。2种方法均表明煤层底板能有效阻隔奥陶系灰岩水,可以实现安全带压开采。
In view of the threat of high water pressure of the bottom plate Ordovician limestone mining in deep coal resources exploitation, based on the extenics theory, nine factors are taken as the matter characteristics of the matter element model, and the weight of each factor affecting the floor water inrush is determined by the analytic hierarchy process, The four-level hazard physical evaluation model of floor water inrush was established to determine the appropriate classic domain and section domain. The risk assessment of floor water inrush from 3210 working face of PanDao Coal Mine was carried out. The results show that matter-element model can quantitatively reflect the degree of water inrush hazard. According to this model, the danger level of water inrush of 3210 working face is safer, and the water inrush coefficient is 0.024 5 ~ 0.026 0 MPa / m, which is far less than the critical value of water inrush coefficient of structural failure block. Both of the two methods show that coal seam floor can effectively block Ordovician limestone water and can be used for pressure belt mining.