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本文较系统地分析研究了在边坡稳定性分析计算中近几年新出现的SARMA法的原理及使用条件。该法可按工程地质构造面进行倾斜条分,并且还考虑了爆破等震动临界水平加速度对边坡稳定性的影响因素,该法还认为边坡滑体破坏必须首先破裂成多个可以相对移动的条块,在滑动前不但要计算滑动面上的剪应力平衡条件,而且还要计算滑体内部条块间侧面剪应力。由于SARMA法考虑了这些实际因素,所以分析结果表明该法比分块迭加法、简布法等有较突出的优点。用SARMA法计算冶金矿山岩石边坡稳定性结果比较符合矿山实际。用电子计算机分析了含水量、滑体底面强度参数、临界水平加速度系数、坡面角、滑体厚度等因素,对安全系数值影响的灵敏程度符合理论上的分析。 作者认为冶金矿山岩石边坡稳定性分析用SARMA法进行计算是比较适宜的。
In this paper, we systematically analyze and study the principles and conditions of SARMA newly emerged in recent years in the slope stability analysis and calculation. The method can be inclined according to engineering geological structure, and also considers the influence factors such as blasting and other critical horizontal acceleration on slope stability. The law also considers that the failure of slope landslides must first be broken into several relative moving Of the block, before sliding not only to calculate the sliding surface shear stress balance conditions, but also to calculate the internal sliding block between the lateral shear stress. As the SARMA method takes into account these practical factors, the analysis results show that the method has more prominent advantages than the block-based superposition method and the simplified method. SARMA method to calculate the stability of the rock slope of metallurgical mine results more in line with the actual mine. The water content, the strength parameters of the bottom of the slide body, the critical horizontal acceleration coefficient, the slope angle and the thickness of the slide body were analyzed by computer. The sensitivity to the safety factor was in line with the theoretical analysis. The authors believe that it is appropriate to calculate the stability of the rock slopes of metallurgical mines using the SARMA method.