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基于传递系数法地震及降雨作用下库岸高边坡稳定性评价 被引量:2

Stability Evaluation of High Slopes Under Earthquake and Rainfall Based on Transfer Coefficient Method
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摘要 地震和降雨是诱发边坡失稳的重要因素,然而,对于高边坡在地震和降雨作用下的稳定性评价,目前仍缺少准确的计算方法。针对这一问题,以某库岸高边坡为研究对象,首先采用GeoSlope软件分析该边坡可能存在的失稳模式及潜在滑动面,然后采用传递系数法,分别计算在天然工况、地震及降雨条件下高边坡的稳定系数。主要结论如下:(1)根据传递系数法计算结果,该库岸高边坡在天然工况、地震工况及降雨工况下稳定系数分别为1.06、1.02、0.98;(2)提出了针对该库岸高边坡的预应力锚索支护方案,该方案可有效提高边坡稳定性。 Earthquake and rainfall are important factors that induce slope instability.However,there is still a lack of accurate calculation methods for the stability evaluation of high slopes under earthquake and rainfall.In order to solve this problem,this paper takes a high bank slope of a reservoir as the research object.First,the GeoSlope software is used to analyze the possible instability mode and potential sliding surface of the slope,and then the transfer coefficient method is used to calculate the natural conditions,Stability factor of high slopes under earthquake and rainfall conditions.The main conclusions are as follows:(1)According to the calculation results of the transfer coefficient method,the stability coefficients of the high bank slope under natural conditions,earthquake conditions and rainfall conditions are 1.06,1.02 and 0.98 respectively;The prestressed anchor cable support scheme for the high slope of the reservoir bank can effectively improve the stability of the slope.
作者 张忠孝 Zhang Zhongxiao(Donggang Water Conservancy Service Center,Donggang 118300,Liaoning)
出处 《陕西水利》 2023年第4期14-15,18,共3页 Shaanxi Water Resources
关键词 地震边坡 降雨 稳定系数 预应力锚索 Earthquake slope rainfall stability factor prestressed anchor cable
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