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宝鸡渭河北岸大型深层黄土滑坡基本特征与稳定性研究

孟静 胡秋韵 石菊松 辛鹏 李滨 王涛

孟静, 胡秋韵, 石菊松, 等, 2018. 宝鸡渭河北岸大型深层黄土滑坡基本特征与稳定性研究. 地质力学学报, 24 (1): 78-86. DOI: 10.12090/j.issn.1006-6616.2018.24.01.009
引用本文: 孟静, 胡秋韵, 石菊松, 等, 2018. 宝鸡渭河北岸大型深层黄土滑坡基本特征与稳定性研究. 地质力学学报, 24 (1): 78-86. DOI: 10.12090/j.issn.1006-6616.2018.24.01.009
MENG Jing, HU Qiuyun, SHI Jusong, et al., 2018. RESEARCH ON BASIC FEATURES AND STABILITY OF LARGE AND DEEP-SEATED LOESS LANDSLIDE ON THE NORTH BANK OF THE WEIHE RIVER IN BAOJI AREA. Journal of Geomechanics, 24 (1): 78-86. DOI: 10.12090/j.issn.1006-6616.2018.24.01.009
Citation: MENG Jing, HU Qiuyun, SHI Jusong, et al., 2018. RESEARCH ON BASIC FEATURES AND STABILITY OF LARGE AND DEEP-SEATED LOESS LANDSLIDE ON THE NORTH BANK OF THE WEIHE RIVER IN BAOJI AREA. Journal of Geomechanics, 24 (1): 78-86. DOI: 10.12090/j.issn.1006-6616.2018.24.01.009

宝鸡渭河北岸大型深层黄土滑坡基本特征与稳定性研究

doi: 10.12090/j.issn.1006-6616.2018.24.01.009
基金项目: 

国家自然科学基金资助项目 40802085

科技支持计划项目 2012BAK10B02

详细信息
    作者简介:

    孟静(1984-), 女, 硕士, 工程师, 主要从事岩土力学与地质灾害研究。E-mail:MexiJay@sina.com

    通讯作者:

    胡秋韵(1983-), 女, 硕士, 工程师, 主要从事环境地质调查研究与管理工作。E-mail:hqiuyun@mail.cgs.gov.cn

  • 中图分类号: P642.22

RESEARCH ON BASIC FEATURES AND STABILITY OF LARGE AND DEEP-SEATED LOESS LANDSLIDE ON THE NORTH BANK OF THE WEIHE RIVER IN BAOJI AREA

  • 摘要: 以宝鸡渭河北岸杨家村大型深层黄土滑坡为研究对象,综合应用野外地质详细调查、工程地质勘察和高密度直流电阻率地球物理勘探等方法,基本查明了杨家村滑坡的特征和稳定性。调查研究结果表明,杨家村滑坡属于深层多级旋转型黄土滑坡,滑面总体呈圆弧形,渭河北缘断裂从杨家村滑坡滑体中部通过,对滑坡结构具有控制性作用,新近纪三门组粘土层的变形破坏是滑坡形成的主要内因。综合评价结果表明杨家村滑坡目前总体处于稳定状态,需关注前缘局部失稳,研究结果可为杨家村滑坡防治提供依据。

     

  • 图  1  宝鸡渭河北岸滑坡分布图

    Figure  1.  Distribution of landslide on the north bank of the Weihe River in Baoji area

    图  2  渭河北岸杨家村黄土滑坡形态特征与地球物理勘探部署图

    Figure  2.  Morphological features and geophysical exploration deployment of Yangjiacun loess landslide on the north bank of the Weihe River

    图  3  渭河北岸杨家村黄土滑坡工程勘察剖面图

    Figure  3.  Engineering exploration section of Yangjiacun loess landslide on the north bank of the Weihe River

    图  4  ZK1中滑体内硬粘土扰动面

    Figure  4.  The disturbed surface in stiff clay of the sliding body in borehole 1

    图  5  ZK2中滑坡主滑面

    Figure  5.  The major sliding surface of landslide in borehole 2

    图  6  高密度电阻率成像剖面及解译结果

    Figure  6.  High density resistivity imaging section and interpretation results

    图  7  多级旋转滑坡示意图

    Figure  7.  Schematic drawing of multi-rotational landslide

    图  8  多级旋转滑坡稳定系数计算方法示意图

    Figure  8.  Schematic drawing of stability coefficient calculation method of multi-rotational landslide

    表  1  杨家村滑坡稳定系数计算结果

    Table  1.   Calculated results of stability coefficient of the Yangjiacun landslide

    计算工况滑体单元滑坡稳定系数K
    Fellennius法Bishop法Sarma法
    工况1天然状态Ⅰ号1.1151.2431.128
    Ⅰ+Ⅱ号1.2681.4591.367
    Ⅰ+Ⅱ+Ⅲ号1.3371.6351.412
    工况2降雨10年一遇Ⅰ号0.9891.0871.035
    Ⅰ+Ⅱ号1.1161.2081.148
    Ⅰ+Ⅱ+Ⅲ号1.2951.4171.342
    50年一遇Ⅰ号0.9561.0020.979
    Ⅰ+Ⅱ号1.0121.0981.043
    Ⅰ+Ⅱ+Ⅲ号1.1281.3641.233
    工况3地震a=0.15gⅠ号0.9380.9890.943
    Ⅰ+Ⅱ号1.0961.1971.136
    Ⅰ+Ⅱ+Ⅲ号1.1341.3121.203
    a=0.2gⅠ号0.7760.8890.847
    Ⅰ+Ⅱ号0.9121.0750.989
    Ⅰ+Ⅱ+Ⅲ号0.9261.0821.001
    下载: 导出CSV
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  • 收稿日期:  2017-09-15
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