| 降雨对花岗岩残积土边坡孔压及稳定性影响 |
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| 引用本文： | 林鸿基,许旭堂,徐祥,黄浩,吴能森.降雨对花岗岩残积土边坡孔压及稳定性影响[J].井冈山大学学报（自然科学版）,2018(2):69-73. |
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| 作者姓名： | 林鸿基 许旭堂 徐祥 黄浩 吴能森 |
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| 作者单位： | 福建农林大学交通与土木工程学院 |
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| 基金项目： | 国家自然科学基金项目（41702288）；福建农林大学高水平大学建设重点项目（113-612014018） |
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| 摘 要： | 针对一个花岗岩残积土边坡的简化模型,基于非饱和渗流理论和Bishop条分法,利用Geo-Studio软件,对4种不同降雨模式下的边坡孔隙水压力和稳定安全系数进行计算与分析,得到主要结论:(1)降雨入渗对花岗岩残积土边坡的中上部有较显著的不利影响;(2)不同降雨模式对花岗岩残积土边坡的影响时效差异较大,前峰型和均布型、中峰型、后峰型降雨的最不利影响时刻分别在降雨后1.0~1.5d、1.5~2.0d、2.5~3.5d;(3)降雨入渗引起的花岗岩残积土边坡失稳形式,极可能是从坡体中部诱发的浅层滑坡。
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| 关 键 词： | 降雨模式 花岗岩残积土边坡 孔隙水压力 稳定安全系数 影响时效 |
| 收稿时间： | 2018/1/5 0:00:00 |
| 修稿时间： | 2018/2/16 0:00:00 |
INFLUENCE OF RAINFALL ON PORE PRESSURE AND STABILITY OF GRANITE RESIDUAL SOIL SLOPE |
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| LIN Hong-ji,XU Xu-tang,XU Xiang,Huang Hao and WU Neng-sen.INFLUENCE OF RAINFALL ON PORE PRESSURE AND STABILITY OF GRANITE RESIDUAL SOIL SLOPE[J].Journal of Jinggangshan University(Natural Sciences Edition),2018(2):69-73. |
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| Authors: | LIN Hong-ji XU Xu-tang XU Xiang Huang Hao and WU Neng-sen |
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| Institution: | Transport and Civil Engineering Institute, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China,Transport and Civil Engineering Institute, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China,Transport and Civil Engineering Institute, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China,Transport and Civil Engineering Institute, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China and Transport and Civil Engineering Institute, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China |
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| Abstract: | According to a simplified model of granite residual soil slope,based on unsaturated seepage theory and Bishop''s slice method,the Geo-Studio software was used to calculate and analyze the pore water pressure and stability safety factor of the slope under four different rainfall patterns.The main conclusions are as follows:(1) Rainfall infiltration has a significant adverse effect on the middle and upper part of the granite residual soil slope; (2)Time-effectiveness influenced by rainfall patterns is significant,the most unfavorable moment of the granite residual soil slope are respectively at 1.0~1.5d,1.5~2.0d,2.5~3.5d after rainfall corresponding to advanced and uniform rainfall patterns,central rainfall pattern,delayed rainfall pattern.(3) The instability form of granite residual soil slope caused by rainfall infiltration is very likely to be a shallow landslide originated from the middle part of slope. |
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| Keywords: | rainfall pattern granite residual soil slope pore water pressure stable safety factor time-effectiveness of influence |
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