库水长期升降作用下库岸边坡稳定性研究

doi:10.3969/j.issn.1001-5485.2015.04.019

院报 ›› 2015, Vol. 32 ›› Issue (4): 96-100.DOI: 10.3969/j.issn.1001-5485.2015.04.019

库水长期升降作用下库岸边坡稳定性研究

邓成进^1,2,王孔伟³,袁秋霜^1,2,贾巍^1,2

1.中国水电工程顾问集团西北勘测设计研究院有限公司,西安 710065;
2.国家能源水电工程技术研发中心
高边坡与地质灾害研究治理分中心,西安 710065;
3. 三峡大学土木与建筑学院,湖北宜昌 443002

收稿日期:2013-12-04 修回日期:2014-01-13 出版日期:2015-04-01 发布日期:2015-04-21
作者简介:邓成进(1986-),男,湖北随州人,助理工程师,硕士,主要从事水工设计、边坡数值模拟计算工作,(电话)029-88290212(电子信箱)dengchengjin@nwh.cn。

Stability of Reservoir Slope under Repetitive Variation of Reservoir Water Level

DENG Cheng-jin^1,2,WANG Kong-wei³,YUAN Qiu-shuang^1,2,JIA Wei^1,2

1.Hydro China Xibei Engineering Corporation,Xi’an 710065,China;
2.High Slope and Geological Hazard Research Treatment Division of China Hydropower Technology Research and Development Center,Xi’an 710065,China;
3.College of Civil Engineering and Architecture,China Three Gorges University,Yichang 443002,China

Received:2013-12-04 Revised:2014-01-13 Online:2015-04-01 Published:2015-04-21

摘要/Abstract

摘要： 选取三峡库区典型库岸的砂岩进行“浸泡-风干”循环试验,模拟库水升降条件对库区水位变幅区岩石强度的影响。根据岩石试验结果和岩体RMR法推算出经历不同水位条件下岩体参数劣化规律,并通过数值模拟研究变幅区砂岩的劣化对库岸典型滑坡区库岸稳定性的影响,分析库岸边坡在库水长期作用下演化规律。研究表明水位升降过程对变幅区岩体质量的劣化作用较为明显,会导致库岸边坡破坏的时间大为缩短;库岸坍塌破坏过程与此类滑坡稳定性有直接的联系,可能最终会导致此类滑坡复活。研究成果可为库区内此类滑坡长期稳定性分析提供参考。

关键词: 库岸边坡, 浸泡-风干试验, 库水位变幅区, 滑坡复活, 岩体RMR法

Abstract: The influence of reservoir water level on rock strength in the water level variation zone was researched through immerse-dry test on sandstone collected from typical bank slope in Three Gorges Reservoir area. The degradation of rock mass parameters in the presence of different water levels was deduced by using the test results and RMR method. Furthermore, the impact of rock degradation in the variation zone on the stability of a typical landslide in the Three Gorges Reservoir Area was analyzed through numerical simulation. Results reveal that the increase and drawdown of water level has obvious deterioration effect on rock mass, and shortens the time of bank slope failure. The reservoir bank collapse is directly related with the landslide stability and may cause the reliving of landslide. This research is a reference for analyzing the long-term stability of landslide in the reservoir area.

Key words: bank slope of reservoir, immerse-dry test, variation zone of reservoir water level, landslide relive, RMR method

中图分类号:

P642

邓成进,王孔伟,袁秋霜,贾巍. 库水长期升降作用下库岸边坡稳定性研究[J]. 院报, 2015, 32(4): 96-100.

DENG Cheng-jin,WANG Kong-wei,YUAN Qiu-shuang,JIA Wei. Stability of Reservoir Slope under Repetitive Variation of Reservoir Water Level[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2015, 32(4): 96-100.

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库水长期升降作用下库岸边坡稳定性研究

Stability of Reservoir Slope under Repetitive Variation of Reservoir Water Level

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