| 基于临界滑动场的岩质边坡临界滑动面搜索方法 |
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| 引用本文： | 段荣福,白世伟.基于临界滑动场的岩质边坡临界滑动面搜索方法[J].岩土力学,2007,28(5):861-864. |
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| 作者姓名： | 段荣福 白世伟 |
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| 作者单位： | 中国科学院武汉岩土力学研究所，武汉 430071 |
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| 摘 要： | 在边坡稳定分析中临界滑动面搜索是关键问题。现行搜索算法包括数学规划法和智能搜索算法，均是以圆弧或圆弧加折线为假定滑动面形式在计算土质边坡基础上发展起来的，基本上不适用于岩质边坡计算。临界滑动场理论以余推力法和最优化理论为基础，采用新的结构面处理方法，可计算出与实际情况基本吻合的最大余推力方向场，能方便追踪出各可能出口点的滑动面，从而找出边坡整体临界滑动面。取一均质土质边坡算例对计算结果可信度进行验证，与强度折减法和Spencer极限平衡法所得计算结果相吻合。另取一露天矿边坡对该方法的实用性进行了验证。
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| 关 键 词： | 临界滑动场 结构面 岩质边坡 临界滑动面 |
| 文章编号： | 1000-7598-（2007）05-0861-05 |
| 收稿时间： | 2005-06-08 |
| 修稿时间： | 2005-06-082005-09-12 |
Searching method for critical slip surface in rock slope based on theory of critical slip field |
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| DUAN Rong-fu,BAI Shi-wei.Searching method for critical slip surface in rock slope based on theory of critical slip field[J].Rock and Soil Mechanics,2007,28(5):861-864. |
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| Authors: | DUAN Rong-fu BAI Shi-wei |
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| Institution: | Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
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| Abstract: | Critical slip surface search is one of key problems in slope stability analysis.Present search methods include mathematic programming methods and brainpower search methods,which are based on the assumption of arc or arc-polyline slide style,and developed on basis of soil slope.It is not fit for rock slope.Critical slip field theory is based on residual thrust method and optimization theory.Useing new structure surface processing method,it can calculate the biggest residual thrust field,which is almost consistent with actual condition and easily search slip surface of respectively possible exits.Therefore,it can find the whole slope critical slip surface.First of all,using example of homogeneous material slope validates credibility of calculation result to be consistent with the result of shear strength reduction technique and the Spencer's precedure of limit equilibrium.Then,an example of open strip mine side slope is given to validate the practicability of this method. |
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| Keywords: | critical slip field structural surface rock slope critical slip surface |
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