黄土填方高边坡变形破坏机制分析

宋焱勋; 彭建兵; 张骏

黄土填方高边坡变形破坏机制分析

宋焱勋^1,2,3,
彭建兵^1,2,3,
张骏^1,2,3

1.
长安大学地质工程与测绘学院西安 710054;
2.
西部地质资源与地质工程教育部重点实验室西安 710054;
3.
国土资源部岩土工程开放研究实验室西安 710054

详细信息

作者简介:
宋焱勋,工程地质专业.Emai:lsongyx@chd.edu.cn

中图分类号: P642.3⁺1
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- 被引次数: 0
出版历程
- 收稿日期: 2007-12-24
- 修回日期: 2008-02-27
- 刊出日期: 2008-10-30

DEFORMATIONMECHANISM OF HIGH LOESS EMBANKMENT SLOPE

SONG Yanxun^1,2,3,
PENG Jianbing^1,2,3,
ZHANG Jun^1,2,3

1.
G eology E ngineer ing and Survey ing Departm ent, Chang'an University, Xi'an 710054;
2.
Laboratory of EducationalM inistry of W estern G eology R esource and Geo logy Eng ineering, Xi'an 710054;
3.
Op en Research Laboratory of Geo technical Eng ineering Under theM inistry of L and R esources, Xi'an 710054

摘要

摘要: 本文依据西北某油田倒班基地黄土填方高陡边坡工程勘察, 研究了该边坡的变形破坏机制, 通过对边坡工程地质条件及变形破坏分析, 建立FLAC3D地质模型, 采用数值模拟方法研究了边坡变形破坏机制。研究结果表明, 主要变形区或破坏区为陡坎周围至其沿坡面向下20～25m 的范围之间, 其破坏深度底界为全新世填土层Q4与原状黄土Q3接触面, 但要重点控制沿坡面向下20～25m 的范围之间的变形。数值模拟结果表明, 该边坡目前整体稳定性较好, 不会发生整体变形破坏。
- 黄土填方高边坡 /
- 变形机制 /
- 破坏区分析 /
- 稳定性
Abstract: This paper relies on geotechn ical engineering investigat ion of high loess embankment slope in the oilfield site northw estern of China. It is based on the analysis o f eng ineering geo log ical cond itions and deformation character istics. It stud ies the slope deform ation and failuremechan ism. A three- dimension geo log icalmodel is es tablished to analyze the distribution of stress and stra in of the loess f ill slope. The FLAC3D so ftw are is used to simu late the deform ationm echan ism o f the slope. The numerica l resu lt ind icates that them ain transform and fa il zone beg in from abrupt hole surroundings and follow s face o f slope to get dow n a 20- 25 meter. The bottom interface is the surface o f contact betw een theHo loceneE poch f ill earth storey Q4 and the orig ina l loessQ3. The numerica l re su lt further ind icates that the slope has adequate stab ility aga inst landslide. Any large deformation and fa ilure o f the slope is found to be impossib le.
- H igh loess embankment slope /
- De fo rmation mechan ism /
- Numerical analysis /
- Slope stab ilization

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参考文献(1)

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