和平水庫右壩肩高邊坡施工期穩(wěn)定性分析

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摘  要：高陡邊坡存在裂隙發(fā)育、風(fēng)化嚴(yán)重、卸荷強烈等不良的地質(zhì)現(xiàn)象，直接影響到高邊坡的穩(wěn)定性。該文分別采用三維有限元強度折減法和二維剛體極限平衡法，對和平水庫右壩肩邊坡在開挖支護后的穩(wěn)定性進行分析。研究結(jié)果表明，和平水庫右壩肩邊坡在完建工況下的穩(wěn)定性滿足規(guī)范要求，開挖和支護措施合理可行。

關(guān)鍵詞：高邊坡；工程地質(zhì)；穩(wěn)定性；強度折減法；剛體極限平衡法

中圖分類號：TV223      文獻標(biāo)志碼：A          文章編號：2095-2945（2024）20-0115-04

Abstract： There are some bad geological phenomena in high and steep slope， such as crack development， serious weathering， strong unloading and so on， which directly affect the stability of high slope. In this paper， the three-dimensional finite element numerical strength reduction method and the two-dimensional rigid body limit equilibrium method are used to analyze the stability of the right abutment slope of Heping Reservoir after excavation and support. The results show that the stability of the right abutment slope of Heping Reservoir meets the requirements of the code， and the excavation and support measures are reasonable and feasible.

Keywords： high slope; engineering geology; stability; strength reduction method; rigid body limit equilibrium method

西南地區(qū)的大壩工程多位于高山峽谷地段，兩岸的高陡邊坡存在裂隙發(fā)育、風(fēng)化嚴(yán)重、卸荷強烈等不良的地質(zhì)條件，在人為開挖擾動的情況下，極易發(fā)生邊坡失穩(wěn)現(xiàn)象。（剩余3820字）