基于模糊集理论与CSMR的岩质边坡稳定性分析

将模糊集理论中模糊推理系统与CSMR岩质边坡稳定性综合评价方法相结合形成FCSMR评价方法.其步骤为:首先利用模糊推理系统处理岩质边坡稳定性影响因素所具有的模糊性,然后用CSMR评价方法对岩质边坡稳定性进行评价.将此方法评价大朝山水电站进水口边坡稳定性并与CSMR评价方法相比较.研究结果表明:FCSMR法的评价结果是边坡可能发生平面或圆弧形类似土质滑坡,CSMR评价方法的结果是边坡可能发生大规模平面滑动或楔形体滑动:利用理正软件计算得到发生平面滑动的安全系数为1.918,发生圆弧形滑动的安全系数为1.493,说明边坡发生圆弧形滑动的可能性更大,表明FCSMR评价方法比传统的CSMR评价方法的评价结果更加合理.

Assessment of rock slope stability using fuzzy set and CSMR

The FCSMR classification was formed by combining the fuzzy inference system of fuzzy set theory with CSMR classification.Firstly,the fuzzy inference system was used to deal with the factors’ fuzziness of rock slope stability.Secondly,the CSMR classification was used to evaluate stability of rock slope.Both the CSMR classification and FCSMR classification were used to assess the stability of Dachaoshan Hydropower Station water inlet slope.A big planar or soil-like failure was validated by using FCSMR classification while a planar of big wedges failure was validated by using CSMR classification.The results show that planar failure’s safety factor is 1.918 and soil-like failure’s safety factor is 1.493,which indicates that soil-like failure’s probability is higher than big planar and FCSMR classification is more reasonable than CSMR classification.