超高岩质边坡安全性评价及防护措施研究

超高型岩质边坡安全性受到诸多因素的影响。针对一工程实例,采用平面分析法研究了影响高大边坡安全的影响因素。分别考虑了常遇状态、降雨影响、地震作用及最不利组合情况下,高大边坡的稳定性系数的变化趋势,并与规范进行对比,计算结果表明,降雨和地震作用将显著降低超高型边坡的安全性。最后,根据计算结果对此类边坡的防护给出了设计建议。

Study on Safety Evaluation and Protection Measures for Superhigh Rock Slope

The safety for superhigh rock slope is affected by many external factors. In accordance with a typical engineering example, the planar method has been used to analyze the important influence factors for superhigh slope. Safety factors for typical superhigh slope under four conditions such as normal state, rainfall, earthquake and most unreasonable combination, have been calculated. The calculated result has been contrasted to the existing code. The safety of superhigh slope is significantly decreased because of the exaction of the rain and earthquake. At last, some design advices has been given to the protection measures for this kind of slope according to the foregoing research parts.