| 天福庙拱坝坝肩抗滑稳定性研究 |
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| 引用本文： | 许东俊,郭见扬.天福庙拱坝坝肩抗滑稳定性研究[J].岩土力学,1984,5(2):1-19. |
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| 作者姓名： | 许东俊 郭见扬 |
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| 摘 要： | 本文介绍了天福庙拱坝坝肩岩体稳定性研究,并提出了相应加固措施的建议。即在详尽的工程地质水文地质调查的基础上分析出各种可能的失稳机制,并组合出各种滑移边界条件;通过现场和室内岩体力学试验,测出构成边界条件的各种地质结构面的抗剪强度和变形常数;通过三维有限元弹性分析计算,得到应力应变和破损区的分布,检验了失稳机制和边界条件的合理性;通过刚体极限平衡法,计算出各种荷载和边界条件组合情况下的抗滑稳定安全系数;尔后针对最不稳定边界条件及其控制稳定性的主要因素,提出有效的加固措施的建议。文中还讨论了岩体和各种软弱结构面抗剪强度的取值原则、试验值的使用原则以及非均质结构面和组合结构面的综合抗剪强度问题。
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| 关 键 词： | 天福庙 结构面 抗滑稳定性 滑移面 失稳机制 岩体力学 软弱夹层 组合结构 刚体极限平衡 抗剪强度 |
Stability Study of Abutment of Tianfumiao Arch Dam |
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| Xu Dong jun,Guo Jian yang.Stability Study of Abutment of Tianfumiao Arch Dam[J].Rock and Soil Mechanics,1984,5(2):1-19. |
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| Authors: | Xu Dong jun Guo Jian yang |
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| Abstract: | In this paper the method and procedure of stability study of the abutment of Tianfumiao arch dam is introduced and the corresponding reinforcement measures are suggested. Based on detailed investigation of engineering geology and hydro-geology, various possible mechanisms of unstability are analysed and different sliding boundary conditions are combined, shear strength and deformation modulus and various geological structural planes forming the boundary conditions are determined with both in site and lab mechanical tests on rock, distributions of stress strain and fracture zone are obtained after 3-dimensional elastic finite element analysis so as to cheek the reasonability of unstability mechanism and boundary conditions, safety factor of stability under combined conditions of various loads and boundaries is computed by means of ultimate equilibrium method for rigid body, and finally, effective reinforcement measures are suggested with respect to the most unstable boundary condition and the main factors governing stability. Also, the criteria of selecting value of shear strength of rock mass and various weak planes, principle of using test data, the comprehensive shear strength problems on heterogeneoue structural plane and combined structural plane are discussed. |
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