核电厂高边坡抗震验算和加固设计

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摘要分析当前核安全规范和导则对核电厂高边坡抗震稳定验算方法和适用性，综述国内核电厂高边坡案例的研究进展。以某三代核电厂级高边坡为例，探讨应用多种定性和定量方法综合分析核电厂高边坡稳定性和破坏模式的分析思路。首先，采用赤平投影法和CSMR分类法半定量地评价边坡的稳定性，给出边坡设计坡比建议；然后，基于典型二维计算剖面，采用刚体极限平衡法、强度折减法和基于应力场的极限平衡有限元法分别对边坡进行抗震稳定验算；最后建立岩体三维裂隙网络模型，应用离散元数值方法模拟节理岩体非线性大变形和破坏物质运移过程，定量分析边坡的破坏模式和破坏区域，计算地震动作用下边坡崩塌物质的最大运移距离，同时介绍核电工程中的边坡治理理念和常见的加固手段。研究成果可丰富核安全级高边坡研究理论与方法，并为核安全级高边坡稳定性分析、评价和工程设计提供技术支持。

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	郑文棠

关键词 ：边坡工程, 核电厂边坡, 稳定分析, 离散元法, 三维模型, 节理岩体

Abstract：The suitability of current nuclear safety guides to high slope antiseismic stability assessment of nuclear power plant is studied；and the analysis method and domestic research status of high slope stability are reviewed. Taking the typical high slope at a certain nuclear power station for example，qualitative analysis methods are combined with quantitative methods to comprehensively analyze the stability and failure mode of nuclear power plant high slopes. Firstly，red flat projection method and Chinese slope mass rating(CSMR) are applied to half quantitatively forecaste the landslide and define the design ratio of slope. Then，on the basis of typical two-dimensional calculation profile，rigid limit equilibrium method，strength reduction method and limit equilibrium finite element method based on stress field are used to calculate the slope antiseismic stability. Finally，three-dimensional(3D) fracture network model is established. 3D discrete element method is used to simulate the highly nonlinear and large deformation of jointed rock masses and qualitatively analyze failure mode and failure zone of slope. The collapse material migration process is reproduced；and its maximal migration distance is calculated under the action of earthquake. In addition，slope treatment ideas and common reinforcement method are summarized. The present research enriches the theory of high slope stability with nuclear safety grade and can provide technical support for stability analysis，assessment and engineering design of nuclear power plant slopes.

Key words： slope engineering nuclear power plant slopes stability analysis discrete element method 3D model jointed rock mass

引用本文:

郑文棠. 核电厂高边坡抗震验算和加固设计[J]. 岩石力学与工程学报, 2013, 32(s2): 3961-3971.
ZHENG Wentang. ANTISEISMIC STABILITY ANALYSIS AND REINFORCING DESIGN OF NUCLEAR POWER PLANT HIGH SLOPES. , 2013, 32(s2): 3961-3971.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/Is2/3961

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