水对露天矿山边坡致灾机理及治坡研究

以河北某铁矿露天土质边坡为研究背景，针对矿山土质边坡工程中地下水对边坡稳定性的影响，采用Plaxis 3D对边坡在地下水影响下发生滑坡以及在滑坡处添加帷幕进行护坡的模拟研究。研究结果表明：开挖前后，地下水头的位置发生了轻微下移，且地下水的存在破坏了边坡的稳定性；三级边坡形成后，在地下水的渗透作用下，第一级边坡的A1区域和第三级边坡的A2区域出现了滑坡，且在第三级边坡的A4区域出现了剪应力τxy、τyz集中情况；最后，根据地下水对边坡的致灾模拟结果，通过开展防水帷幕的护坡工作，减小了边坡滑坡灾变的位移量，提高了边坡的安全系数。边坡稳定性|Plaxis 3D|地下水|注浆帷幕

Research of Disaster Mechanism of Open Mine Slope by Water and Its Treatment

Taking a soil slope in an open air iron mine of Hebei as research background,and in view of the impact of groundwater on the slope stability in soil slope engineering,simulations on the landslide of slope affected by groundwater and adding the curtain to support the slope are carried out by using Plaxis 3D.The research results showed that after excavating,the head of groundwater moved downward slightly,and the presence of groundwater undermines the stability of the slope.After the third slope formed,and under the permeation of groundwater,landslides appear in the A1 area of first level slope and A2 area of third level slope,and A4 area appears shear stress of τxy and τyz concentration in the third slope.Finally,according to the slope disaster simulation by groundwater,the waterproof curtain to achieve slope protection can reduce the displacement of landslide disaster and increases the safety factor of the slope.