【摘要】 基于卸荷岩体力学理论 ,研究了开挖卸荷对三峡工程 3号机组坝段坝基—边坡组合体整体位移的影响 ,对坝基节理裂隙岩体的劣化作用 ,同时研究了加固效果。结果表明 ,边坡整体位移量值同实测结果较吻合。文中提出的加固措施效果明显 ,但开挖卸荷对节理裂隙的影响范围和程度需作进一步的研究更多还原

【Abstract】 Based on the unloading rock mechanics, the impacts of excavation unloading in the left bank of the Three Gorges Project on the rock body in the dam foundation of No 3 generating unit, that is, the impacts on the integral displacement of the composite body, have been studied Meanwhile its impacts on the worsening of the joint crack rock in the dam foundation also have been studied and its corresponding reinforcement measures have been put forward The results show that the integral displacement value of side slope tallies with its actual measurement and the reinforcement measures put forward in this paper have good effectiveness But the impact ranges and degrees of excavation unloading on joint cracks of the rocks should be further studied更多还原