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基于徐州某矿水文地质与工程地质条件,设计了高水压条件下挡水墙的结构形式,拟采用倒截锥形挡水墙,并利用三维数值方法对其稳定性进行了模拟分析,主要研究挡水墙及围岩在设计水压6 MPa作用下的应力、应变及位移变化情况,并与3、10.8 MPa水压时的情况进行对比,得出所设计的挡水墙在10.8 MPa的高水压下挡水墙墙体单元仍无明显位移、应变变化,符合安全生产要求,为矿井在施工水压达6 MPa的挡水墙设计提供了理论基础和依据。
Based on the hydrogeology and engineering geological conditions of a mine in Xuzhou, the structure of retaining wall under high water pressure conditions was designed. An inverted truncated conical retaining wall was proposed and its stability was simulated by three-dimensional numerical method. The main The change of stress, strain and displacement of retaining walls and surrounding rock under the designed water pressure of 6 MPa was studied and compared with the case of 3,10.8 MPa hydraulic pressure. The designed retaining wall at 10.8 MPa Under water pressure, there is still no obvious displacement and strain change in the wall unit of water retaining wall, which meets the requirements of safety production and provides the theoretical basis and basis for the design of the retaining wall in the water pressure of 6 MPa.