中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2014, Vol. 33 ›› Issue (3): 86-91.DOI: 10.3969/j.issn.1674-0696.2014.03.19

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金佛山水库取水口岩质高边坡动力稳定性分析

王俊杰1,2,吴洋1,2,刘良军3   

  1. 1.重庆交通大学国家内河航道整治工程技术研究中心,重庆 400074;2.重庆交通大学水利水运工程教育 部重点实验室,重庆 400074;3.重庆市水利电力建筑勘测设计研究院,重庆 400020
  • 收稿日期:2013-02-27 修回日期:2014-07-11 出版日期:2014-06-15 发布日期:2015-01-22
  • 作者简介:王俊杰(1973—),男,甘肃陇商人,教授,博士,博士生导师,主要从事岩土工程、水利工程方面的研究和教学工作。E-mail:wangjunjiehhu@163.com
  • 基金资助:
    重庆交通大学研究生教育创新基金项目(20120107)

Dynamic Stability of High Rock Slope Located at Intake of Jinfoshan Reservoir

WangJunjie 1,2, Wu Yang1,2 , Liu Liangjun3   

  1. 1.National Engineering Research Center for Inland Waterway Regulation , Chongqing Jiaotong University , Chongqing 400074 , China; 2.Key Laboratory of Hydraulic & Waterway Engineering of the Ministry of Education , Chongqing Jiaotong University , Chongqing 400074 , China; 3.Chongqing Surveying & Design Institute of Water Reources , Electric Power Architecture , Chongqing 400020 , China
  • Received:2013-02-27 Revised:2014-07-11 Online:2014-06-15 Published:2015-01-22

摘要: 针对重庆金佛山水库取水口岩质高边坡,采用人工修正的加速度时程作为地震输入条件,运用动力有限元法, 分析了地震作用下边坡岩体动力时程响应规律及其变形破坏机制。结果表明:锚喷支护抗震效果显著,有效地约束 了地震作用下的边坡变形;地震作用下岩体运动方向主要以水平方向为主,边坡应力分布主要为压应力,并未出现 明显的拉应力集中区;边坡整体范围内地震加速度放大系数呈不规则分布,受地震累积效应影响,岩体质点速度响 应滞后于地震波普变化;按地震烈度VII度进行工程抗震设防时边坡整体安全,虽然地震作用下边坡可能发生自上而 下的压致拉裂式滑移破坏,但边坡整体大规模惯性滑移失稳可能性较小。

关键词: 水利工程, 岩质高边坡, 动力稳定性, 地震响应, 破坏机制

Abstract: Focusing on the high rocky slope located at intake of Chongqing Jinfoshan reservoir , the dynamic response law and failure mechanism of slope rock mass were analyzed by the dynamic fin ?te element method , adopting the artificially modified acceleration curve as the input condition of earthquake. The results show that the anti-seismic effect of bolt-spray supporting is significant , which effectively constrains the deformation of the slope in earthquake. The movement direction of the rock in earthquake is horizontal , the stress is mainly compressive stress , and there is no obvious tensile stress area. In the whole range , the distribution of acceleration magnification coefficients of earthquake is irregular; the response speed of rock mass lags behind Pope change of earthquake wave , which is affected by the cumulative effect of earthquake. The slope is safe under the design of anti-seismic engineering according to seismic intensity VII. Although it may occur top-down pressure- induced crack damage under earthquake , the slope is unlikely to be large-scale inertial instability.

Key words: hydraulic engineering, high rocky slope, dynamic stability, seismic response, failure mechanism

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