蓄水与施工作用下滑坡变形机制与稳定性分析

卢永兴 肖建章 许冲 谢启智 袁华

卢永兴, 肖建章, 许冲, 谢启智, 袁华. 2014: 蓄水与施工作用下滑坡变形机制与稳定性分析. 工程地质学报, 22(3): 386-395. doi: 10.13544/j.cnki.jeg.2014.03.006
引用本文: 卢永兴, 肖建章, 许冲, 谢启智, 袁华. 2014: 蓄水与施工作用下滑坡变形机制与稳定性分析. 工程地质学报, 22(3): 386-395. doi: 10.13544/j.cnki.jeg.2014.03.006
LU Yongxing, XIAO Jianzhang, XU Chong, XIE Qizhi, YUAN Hua. 2014: DEFORMATION MECHANISM AND STABILITY ANALYSIS OF LANDSLIDE UNDER IMPOUNDMENT AND CONSTRUCTION. JOURNAL OF ENGINEERING GEOLOGY, 22(3): 386-395. doi: 10.13544/j.cnki.jeg.2014.03.006
Citation: LU Yongxing, XIAO Jianzhang, XU Chong, XIE Qizhi, YUAN Hua. 2014: DEFORMATION MECHANISM AND STABILITY ANALYSIS OF LANDSLIDE UNDER IMPOUNDMENT AND CONSTRUCTION. JOURNAL OF ENGINEERING GEOLOGY, 22(3): 386-395. doi: 10.13544/j.cnki.jeg.2014.03.006

蓄水与施工作用下滑坡变形机制与稳定性分析

doi: 10.13544/j.cnki.jeg.2014.03.006
基金项目: 

国家973项目(2014CB04700)和国家自然科学基金资助项目(41202235)资助

详细信息
    作者简介:

    卢永兴,男,硕士研究生,主要从事地质灾害评估,岩土工程数值计算方面研究.Email:jiemiqunqun@163.com

  • 中图分类号: P642.22

DEFORMATION MECHANISM AND STABILITY ANALYSIS OF LANDSLIDE UNDER IMPOUNDMENT AND CONSTRUCTION

  • 摘要: 向家坝水电站一期蓄水后,刚刚完成挖填方工程的307省道复建公路所途经的观音坪滑坡发生明显变形,滑坡变形究竟是蓄水触发还是复建公路施工触发存在着较大争议。本文基于滑坡变形特征与现场监测结果,探讨了该滑坡的变形机制。通过有限元数值模拟对该滑坡的稳定性进行分析,采用强度折减法计算出不同工况下滑坡的安全系数。计算结果表明:(1)复建公路施工和库水位上涨都不利于滑坡整体稳定,而且库水位上涨对滑坡稳定性的影响程度更大;(2)施工结束,且水库蓄水至354m后,滑坡已接近临界稳定状态;如不采取措施,库水位上升至二期蓄水位370m和正常蓄水位380m时,安全系数将进一步降低;(3)对该滑坡采取削坡减载治理措施后,滑坡在二期蓄水位和正常蓄水位的条件下安全系数均满足规范的要求,分析成果可为同类滑坡防治提供参考。
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出版历程
  • 收稿日期:  2013-02-11
  • 修回日期:  2014-04-10
  • 刊出日期:  2014-06-25

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