大奔流沟料场施工期高边坡稳定性数值模拟

Yangtze River(2013)

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Abstract
锦屏一级水电站大奔流沟料场边坡开挖高度468 m,开挖量巨大,岩层陡倾坡外,快速开挖卸荷过程中边坡安全稳定问题突出。在边坡破坏模式分析的基础上,建立了考虑层状岩体各项异性的数值分析模型,研究边坡开挖过程中应力、位移、塑性区和锚固受力演化特征,并评价边坡稳定性。研究表明,边坡整体稳定性主要受控于边坡的地质结构特征、层间错动带和岩层层面的抗剪强度等因素。总体上,开挖完成后边坡安全系数满足规范要求。
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Key words
burst destruction,material field at gullydeep layered slope,Jinping I Hydropower Station,numerical simulation,Dabenliugou quarry
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