巫山县望霞危岩体变形监测及破坏机制分析

乐琪浪 王洪德 薛星桥 高幼龙 金枭豪 张俊义 潘尚涛

乐琪浪, 王洪德, 薛星桥, 高幼龙, 金枭豪, 张俊义, 潘尚涛. 2011: 巫山县望霞危岩体变形监测及破坏机制分析. 工程地质学报, 19(6): 823-830.
引用本文: 乐琪浪, 王洪德, 薛星桥, 高幼龙, 金枭豪, 张俊义, 潘尚涛. 2011: 巫山县望霞危岩体变形监测及破坏机制分析. 工程地质学报, 19(6): 823-830.
LE Qilang, WANG Hongde, XUE Xingqiao, GAO Youlong, JIN Xiaohao, ZHANG Junyi, PAN Shangtao. 2011: DEFORMATION MONITORING AND FAILURE MECHANISM OF WANGXIA DANGEROUS ROCK MASS IN WUSHAN COUNTY. JOURNAL OF ENGINEERING GEOLOGY, 19(6): 823-830.
Citation: LE Qilang, WANG Hongde, XUE Xingqiao, GAO Youlong, JIN Xiaohao, ZHANG Junyi, PAN Shangtao. 2011: DEFORMATION MONITORING AND FAILURE MECHANISM OF WANGXIA DANGEROUS ROCK MASS IN WUSHAN COUNTY. JOURNAL OF ENGINEERING GEOLOGY, 19(6): 823-830.

巫山县望霞危岩体变形监测及破坏机制分析

基金项目: 

国家重大工程地质灾害预警专项-三峡库区地质灾害专业监测

详细信息
    作者简介:

    乐琪浪,主要从事工程地质,岩土工程及滑坡监测预警方面的研究工作.Email: leqilang@sina.com

  • 中图分类号: P642.22

DEFORMATION MONITORING AND FAILURE MECHANISM OF WANGXIA DANGEROUS ROCK MASS IN WUSHAN COUNTY

  • 摘要: 2010年8月三峡库区望霞危岩变形加剧,对航道安全及坡体上居民的生产生活造成了较大影响。在对新生裂缝详细调查和对变形历史、地表位移、全站仪监测及裂缝位移监测数据分析的基础上,对望霞危岩变形特征及其成因进行了综合分析。研究结果表明:危岩体变形区总体向SW方向位移,并具有明显的沉陷变形特征。T10缝为控制性裂缝,是整个变形区的后边界,主要表现为裂缝张开和沉降变形。T11和T12缝间的块体整体向SW方向位移,并伴随下沉,其下沉量大于水平位移量。由于T11和T12缝间的块体挤压作用,造成T13缝一带岩体的变形明显加剧。危岩体各岩层中节理面相互贯通,形成1组延伸较远,平直,贯通性较好的结构面,与危岩破坏面相互平行,其对危岩的破坏起着控制性作用。危岩体与基座构成了典型的硬-软-硬岩性组合形式,为危岩的层间滑动作用提供了地质结构组合条件。此次裂缝的扩张及塌陷坑的形成是在前一次变形的基础上发展的,其与底部采矿活动关系极为密切。持续降雨后危岩发生向临空面旋转滑移,并形成坐落挤出式崩塌。
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出版历程
  • 收稿日期:  2011-05-20
  • 修回日期:  2011-08-11
  • 刊出日期:  2011-12-25

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