| 降雨入渗对填土边坡稳定性影响研究 |
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| 引用本文： | 刘利,余寿全,陈一劳,王良,林峰,王殿龙.降雨入渗对填土边坡稳定性影响研究[J].路基工程,2018,0(2):52-56. |
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| 作者姓名： | 刘利 余寿全 陈一劳 王良 林峰 王殿龙 |
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| 作者单位： | 1.广西电网有限责任公司电网建设分公司, 南宁 530022 |
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| 基金项目： | 广西电网有限责任公司科技项目:变电站土建专业若干问题研究与应用（GXAK-FW-2016-02） |
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| 摘 要： | 以非饱和渗流理论为基础，以广西某变电站填土边坡为工程实例，运用岩土体渗流有限元及边坡稳定性分析软件，分别对该填土边坡在不同时刻下的孔隙水压力分布状况、渗流路径、稳定性进行模拟分析。结果表明:降雨入渗主要通过改变土体孔隙水压力、土体含水率以及基质吸力，从而对边坡产生影响，随降雨入渗时间增大，边坡最危险滑面有下移趋势，安全系数逐渐下降。其中，在降雨48小时至72小时时间段内，填土边坡稳定性下降最为显著。如遇连续降雨情况，该填土边坡有很大的安全隐患。
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| 关 键 词： | 降雨入渗 数值模拟 填土边坡 稳定性 |
| 收稿时间： | 2019-11-06 |
Study on Influence of Rainfall Infiltration on Stability of Soil-filled Slope |
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| Abstract: | In this paper, taking a soil-filled slope in Guangxi substation as the engineering example, based on the unsaturated seepage theory, using the seepage finite element method in geotechnical engineering and slope stability analysis software, the pore water pressure distribution, seepage path and stability of the slope under different time is simulated and analyzed. The results show that the rainfall infiltration has an influence on the slope mainly by changing the soil pore water pressure, moisture content and matric suction. With the increase of rainfall infiltration time, the most dangerous sliding surface of the soil-filled slope has down trend and the safety coefficient decreases. In the rainfall period from 48 h to 72 h, the stability of the slope decreases most significantly. In case of continuous rainfall, the soil-filled slope has a great hidden danger. |
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