Stability analysis of arch dam and slope of the Xiluodu hydropower station on the Jinsha river

被引：0
|
作者：
Wu J. [1 ,2 ]
Guo D. [1 ]
Zhang L. [1 ,3 ]
Wang L. [4 ]
机构：
[1] Institute of Marine Science and Technology, Shandong University, Shandong, Qingdao
[2] State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology, Jiangsu, Xuzhou
[3] State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Hubei, Wuhan
[4] Institute of Rock Instability and Seismicity Research, Dalian University of Technology, Liaoning, Dalian
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2023年 / 42卷 / 10期
基金：
中国国家自然科学基金;
关键词：
arch dams and slopes; micro-seismic monitoring; numerical simulation; slope engineering; stability; Xiluodu hydropower station;
D O I：
10.13722/j.cnki.jrme.2023.0009
中图分类号：
学科分类号：
摘要：
The stability of arch dam and slope of hydropower stations is a hot issue that many scholars pay attention to. The stability of the Xiluodu hydropower station is studied by combining numerical simulation and micro-seismic monitoring technology. The variation law of the stress and displacement of arch dam and slope under different water levels is analyzed. The relationship between the stability of arch dam and slope and the water level is explored. The distribution characteristics of slope micro-seismic events and micro-fracture types are studied. The relationship between high stress and micro-seismic events is revealed. The results show that：(1) The stress and displacement of arch dam and slope are positively correlated with the water level. The stress and displacement of the arch dam at the same elevation gradually increase from the downstream surface to the upstream surface，and there are high stress accumulation areas and large deformation areas in the dam toe area. (2) The micro-seismic activity of the slope increases gradually with the water level. The micro-fracture of deep rock mass of slope is mainly tensile failure type，accompanied by a large number of mixed type and a small part of shear type. (3) The high stress area of the slope is consistent with the micro-seismic event gathering area in time and space，and the high stress of the slope is the internal driving force of the micro-seismic event. (4) The 580 m water level is the sensitive characteristic water level of Xiluodu hydropower station. The research results have guiding significance for the safe and stable operation of the Xiluodu hydropower station，which also have certain reference value for the stability study of the similar hydropower stations and slopes. © 2023 Academia Sinica. All rights reserved.
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页码：2478 / 2495
页数：17
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