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J4  2010, Vol. 44 Issue (10): 2016-2020    DOI: 10.3785/j.issn.1008-973X.2010.10.029
岩土工程、土木及建筑工程     
松散堆积土中的隔水层对边坡稳定性的影响
孙红月1, 吴红梅2, 李焕强3, 尚岳全2
1. 浙江大学 海洋科学与工程学系,浙江 杭州310058;2.浙江大学 建筑工程学院,浙江 杭州 310058; 3.浙江省交通规划设计研究院,浙江 杭州 310006
Influence to slope stability caused by impermeable layer in loose deposited soil
SUN Hong-yue1, WU Hong-mei2, LI Huan-qiang3, SHANG Yue-quan2
1. Department of Ocean Science and Engineering, Zhejiang University, Hangzhou 310058, China; 2. College of Civil Engineering and Architecture, Zhejiang University,Hangzhou 310058,China; 3. Zhejiang Provincial Plan Design and Research Institute of Communications, Hangzhou 310006, China
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摘要:

通过大量滑坡案例的地质调查,发现隔水层在滑坡过程中产生重要的影响.为了揭示相对隔水层对边坡稳定性的影响机制,构建包含隔水层的边坡模型,模拟降雨和斜坡后缘地下水入渗的物理力学作用.模型试验结果表明,降雨入渗主要影响隔水层上部土体,使含水量快速升高、土体变形和坡体的下滑推力迅速增大,隔水层下部土体的含水量等参数基本不变.在模型试验中当使后缘地下水入渗到隔水层下部坡体时,虽然只影响隔水层下部坡体的含水量和孔隙水压力,但力学作用影响整个边坡,不仅引起隔水层下部土体的变形,使下滑推力增大,而且在更大程度上影响隔水层上部土体的变形,使隔水层上部土层的下滑推力大幅提高.

Abstract:

Many landslide cases by geological investigation showed that the effect of impermeable strata was important in sliding process. A slope model including an impermeable stratum was constructed to simulate the action of rainfall and groundwater infiltration from slope back edge in order to reveal the influence mechanism of impermeable strata. Simulation results showed that the rainfallinfiltration mainly affected the soil above the impermeable stratum, including the quick increasing of water content, soil deformation, and the rapid enhance of thrust force at slope toe. The soil below the impermeable stratum was not affected. The groundwater infiltrated into the stratum under impermeable layer at back edge only affected the water content and the pore pressure below the impermeable stratum. The effect caused by the groundwater infiltrated not only increased the sliding thrust at the slope toe and the deformation of the slope body below the impermeable stratum, but also greatly increased them above the impermeable stratum.

出版日期: 2010-10-01
:  TU 457  
基金资助:

国家自然科学基金资助项目(40972187); 浙江省重大科技专项社会发展资助项目(2006C13027).

作者简介: 孙红月(1970—),女,浙江诸暨人,副教授,从事岩土工程和地质工程的研究. E-mail: shy@zju.edu.cn
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引用本文:

孙红月, 吴红梅, 李焕强, 尚岳全. 松散堆积土中的隔水层对边坡稳定性的影响[J]. J4, 2010, 44(10): 2016-2020.

SUN Gong-Ru, TUN Gong-Mei, LI Huan-Jiang, CHANG Yue-Quan. Influence to slope stability caused by impermeable layer in loose deposited soil. J4, 2010, 44(10): 2016-2020.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.10.029        http://www.zjujournals.com/eng/CN/Y2010/V44/I10/2016

[1] 国土资源部地质环境司宣传教育中心.中国地质灾害与防治[M].北京:地质出版社,2003: 5.

[2] 许建聪,尚岳全,郑束宁,等.强降雨作用下的浅层滑坡尖点突变模型研究[J].浙江大学学报:工学版,2005,39(11): 1676-1679.

XU Jiancong, SHANG Yuequan, ZHENG Shuning, et al. Cuspcatastrophic model of shallow landslide under intensive rainfall [J]. Journal of Zhejiang University: Engineering Science, 2005, 39(11): 1676-1679.

[3] 张作辰.滑坡地下水作用研究与防治工程实践[J].工程地质学报,1996,4(4): 80-85.

ZHANG Zuochen. Mechanism of groundwater effect landslide stability and control construction [J]. Journal of Engineering Geology,1996,4(4): 80-85.

[4] 赵松江,孙书勤.MODFLOW在四川天台滑坡地下水渗流场模拟当中的应用[J].灾害学,2007,22(1):  50-53.

ZHAO Songjiang, SUN Shuqin. Application of MODFLOW in simulating groundwater seepage flowing field of Tiantai landslide in Sichuan province [J]. Journal of Catastrophology, 2007, 22(1): 50-53.

[5] 程平,程耕国.地下水流衰退过程的数值解析[J].武汉理工大学学报:交通科学与工程版,2006,30(5): 814-816.

CHENG Ping, CHENG Gengguo. Numerical analysis for the decline of subsurface flow [J]. Journal of Wuhan University of Technology: Transportation Science and Engineering, 2006, 30(5): 814-816.

[6] NANDY S, JIAO J J. Groundwater flow analysis in the slope above Shum Wan Road [J]. Environmental and Engineering Geosciences, 2001, 7(3): 239-250.

[7] 朱文彬,刘宝琛.降雨条件下土体滑坡的有限元数值分析[J].岩石力学与工程学报,2002,21(4): 509-512.

ZHU Wenbin, LIU Baochen. Forming and development process of soil landslide during rainfall [J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(4): 509-512.

[8] 魏丽敏,何群,林镇洪.考虑地下水影响的滑坡稳定性分析[J].岩土力学,2004,25(3): 422-426.

WEI Limin, HE Qun, LIN Zhenhong. Stability analysis of landslide under influence of underground [J]. Rock and Soil Mechanics, 2004, 25(3): 422-426.

[9] 周平根.滑坡的地下水作用研究[D].北京:中国科学院地质研究所,1997.

ZHOU Pinggen. Study of the groundwater action in the landslide [D]. Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, 1997.

[10] 吴永锋,石林,吴铭远,等.三峡库区滑坡中的地下水若干问题初探[J].湖北地矿,2002,16(4): 9-14.

WU Yongfeng,SHI Lin,WU Mingyuan,et al. Probe on questions of groundwater inside landslide bodies of the three gorges reservoir region [J]. Hubei Geology and Mineral Resources,2002,16(4): 9-14.

[11] 贺可强,王荣鲁,李新志,等.堆积层滑坡的地下水加卸载动力作用规律及其位移动力学预测:以三峡库区八字门滑坡分析为例[J].岩石力学与工程学报,2008,27(8): 1644-1651.

HE Keqiang, WANG Ronglu, LI Xinzhi, et al. Loadunload dynamic law of groundwater level and dynamic displacement prediction of debris landslide: a case study of bazimen landslide in three gorges reservoir [J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(8): 1644-1651.

[12] 王家海,任佳,张顺斌,等.利用地下水水位对滑坡预警的分析及探讨[J].地下空间与工程学报,2008,4(6): 1152-1156.

WANG Jiahai, REN Jia, ZHANG Shunbin, et al. Analysis and discussion of utilizing groundwater level for landslide earlywarning [J]. Chinese Journal of Underground Space and Engineering, 2008, 4(6): 1152-1156.

[13] UCHIDA T,KOSUGI K,MIZUYAMA T. Effects of pipeflow on hydrological process and its relation to landslide: a review of pipeflow studies in forested headwater catchments [J]. Hydrological Processes,2001,15(11): 2151-2174.

[14] 尚岳全,孙红月,侯利国,等.管网渗流系统对含碎石黏性土边坡的稳定作用[J].岩石力学与工程学报,2005,24(8): 1371-1375.

SHANG Yuequan,SUN Hongyue,HOU Liguo, et al. Study on the stability of pebbly clay slopes with pipe drainage system [J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(8):  1371-1375.

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