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首页> 外文会议>International Conference on Dam Safety Management（2008水库大坝安全管理国际研讨会） >Stability Analysis on the Abutment of Fa-tai Dam
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Stability Analysis on the Abutment of Fa-tai Dam

机译：法大坝坝肩的稳定性分析

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摘要

Fa-tai Dam is an arch dam with the height 37.5 m. There is the defect on the left abutment from 2665～2677 m in high, and a gravity pier is built. Point and area safety are considered to analyse the gravity pier stability, with the load of water pressure and tempera-ture. High-angle cracks (fault) and low-angle cracks exist on the right abutment; the rock is divided into wedge blocks, which impacts the stability of right abutment. After combining fi-nite element method (FEM) and rigid body limit balanced method, the distribution curves of pressure and shear force along the right abutment from the bottom to top are draw up, and the result the integer and partial resistance to overturning is calculated out. It is indicated that the safety factor against sliding of left gravity abutment satisfies criteria. The integer safety factor against sliding of right abutment is 1.05, which is a little less than the criteria 1.10. There are 3 partial safety factors against sliding less than 1.10 while the right abut-ment is divided into 5 parts with equal hight; there are 2 partial safety factors against sliding less than 1.10, while it is divided into 3 parts by the cracks(or fault), so the right abutment safety factor against sliding does not satisfy criteria.
机译：Fa-tai水坝是一座高37.5 m的拱坝。左基台高2665〜2677 m处有缺陷，并建有重力墩。考虑点和区域安全性来分析重力墩的稳定性，以及水压力和温度的负载。右基台上存在高角度裂缝（断层）和低角度裂缝。岩石被分成楔形块，这影响了右基台的稳定性。结合有限元法和刚体极限平衡法，绘制了右基台自下而上的压力和剪力分布曲线，得出了抗倾覆的整数和部分抗力。出来。结果表明，抗左重力桥台滑动的安全系数满足标准。防止右基台滑动的整数安全系数是1.05，比标准1.10小。右基台分为5个相同的高度，其中3个部分安全系数可防止滑动小于1.10。小于1.10的部分安全系数有2个，而根据裂缝（或断层）分为3个部分，因此右基台的安全系数不符合标准。

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