汤明高, 杨何, 许强, 付小林, 祝权, 马新建. 2019: 三峡库区滑坡土体渗透特性及参数研究. 工程地质学报, 27(2): 325-332. DOI: 10.13544/j.cnki.jeg.2018-011
    引用本文: 汤明高, 杨何, 许强, 付小林, 祝权, 马新建. 2019: 三峡库区滑坡土体渗透特性及参数研究. 工程地质学报, 27(2): 325-332. DOI: 10.13544/j.cnki.jeg.2018-011
    TANG Minggao, YANG He, XU Qiang, FU Xiaolin, ZHU Quan, MA Xinjian. 2019: PERMEABILITY AND PARAMETERS OF LANDSLIDE BODIES IN THREE GORGES RESERVOIR AREA. JOURNAL OF ENGINEERING GEOLOGY, 27(2): 325-332. DOI: 10.13544/j.cnki.jeg.2018-011
    Citation: TANG Minggao, YANG He, XU Qiang, FU Xiaolin, ZHU Quan, MA Xinjian. 2019: PERMEABILITY AND PARAMETERS OF LANDSLIDE BODIES IN THREE GORGES RESERVOIR AREA. JOURNAL OF ENGINEERING GEOLOGY, 27(2): 325-332. DOI: 10.13544/j.cnki.jeg.2018-011

    三峡库区滑坡土体渗透特性及参数研究

    PERMEABILITY AND PARAMETERS OF LANDSLIDE BODIES IN THREE GORGES RESERVOIR AREA

    • 摘要: 滑体渗透性及渗透系数取值对于水库滑坡渗流及稳定性分析计算具有非常重要的意义。本文通过三峡库区396个滑坡1188个试坑(样)的测试资料分析得出:(1)三峡库区滑坡体按物源岩性可分为白云岩和灰岩、泥灰岩、砂泥岩互层,按组成结构可分为均质细粒土、土含碎块石、土夹碎块石、碎块石土和裂隙岩体;(2)渗透性以中等和良好为主;且具有一定的区域分布特征,位于奉节、巫溪和忠县的滑坡体渗透性中等,其他区县滑坡体渗透性良好;渗透系数大小与滑坡土体中碎块石含量呈正相关,裂隙岩滑体渗透性则低于碎块石土滑体渗透性;(3)不同组成结构滑体的渗透系数平均值分别为均质细粒土1.28 m·d-1,土含碎块石1.41 m·d-1、土夹碎块石2.56 m·d-1、碎块石土3.84 m·d-1和裂隙岩体3.24 m·d-1

       

      Abstract: The permeability and permeability coefficient of landslide bodies are great importance to the calculation of the seepage and stability of the reservoir landslides. This paper analyses the test data of 1188 test pits(samples) from 396 landslides in the Three Gorges Reservoir Area. It gets the following conclusions:(1)According to provenance lithology of landslides in Three Gorges Reservoir Area, landslide bodies can be divided into dolomite and limestone, marlite, sand shale interbed. According to the composition structure, landslide bodies can be divided into the homogeneous fine-grained soil, soil containing gravel stone, soil clip gravel stone, crushed rock soil and fractured rock mass. (2)The permeability of landslide bodies is mainly medium and good. Moreover, it has certain regional distribution characteristics. The permeability of landslide bodies in Fengjie, Wuxi and Zhongxian is medium. And the permeability of landslide bodies in other districts is good. The permeability coefficient is positively correlated with the content of gravel stone of landslide body. The permeability of the fractured rock mass is lower than that of the crushed rock soil. (3)The average permeability coefficient of different components of landslide bodies are as follows. The permeability coefficient of homogeneous fine-grained soil is 1.28 m·d-1. The soil containing gravel stone is 1.41 m·d-1. The soil clip gravel stone is 2.56 m·d-1. The crushed rock soil is 3.84 m·d-1. And the fractured rock mass is 3.24 m·d-1.

       

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