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基于FLAC~(3D)软件对平朔矿联井工业广场北帮边坡进行了稳定性分析,计算边坡安全系数为1.09,小于规范要求值,结合现场调查可以判断为边坡处于不稳定状态,本身安全储备不足。研究采用预应力锚索加固边坡,采用不平衡系数法求解边坡滑坡推力,确定锚索设计轴力、锚索根数和型号、锚固段长度计算、锚索倾角和布置。研究发现:加固后边坡安全系数为1.46,超出规范要求值1.2;从剪应变增量云图中可以发现,边坡中部台阶拐角处发现破坏区,可以对锚索加固位置进行优化处理。
Based on the FLAC 3D software, the stability analysis of the north slope of Pingshuo Mine Industrial Plaza was carried out. The safety factor of slope was calculated to be 1.09, less than the required value of the standard. According to the field investigation, it can be judged that the slope is in an unstable state , Their own lack of safety reserves. In this paper, the prestressed anchor cable is used to reinforce the slope, and the unbalance coefficient method is used to solve the slope landslide thrust. The axial force, the number and type of anchor cable, the length of anchor section, the inclination and arrangement of anchor cable are determined. It is found that the safety factor of the slope after reinforcement is 1.46, which is beyond the value of the standard requirement of 1.2. According to the cloud chart of shear strain increment, it can be found that the damaged area is found at the corner of the middle slope of the slope, and the reinforcement position of the anchor can be optimized.