溪洛渡水电站蓄水期边坡破坏特征分析

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2025-05-14 DOI:10.1007/s10064-025-04257-4

K. Ma, D. Y. Guo, J. Wu, R. L. Wang, H. L. Huang, S. C. Zhang, G. He

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引用次数: 0

摘要

水电站蓄水后边坡稳定性是影响高坝结构安全和长期稳定运行的重大隐患。本文采用微震监测技术与有限元法相结合的方法，对溪洛渡水电站边坡的稳定性进行了分析。研究了微震活动的时空分布和微震能量密度的变化规律。分析了右岸边坡岩体微裂缝的分布特征及不同水位下边坡应力的变化规律。揭示了边坡应力与微地震事件之间的内在联系。结果表明：(1)微震活动与水位呈正相关。(2) 580 m水位为溪洛渡水电站的敏感特征水位。(3)边坡微震事件是由岩石应力变化引起的。微震监测与数值模拟相结合的方法可以有效地评价岩体的损伤程度，预测边坡的潜在失稳区域。研究结果对类似地下工程施工具有重要的指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of the slope damage characteristics of the Xiluodu Hydropower Station during the impoundment period

The slope stability of hydropower station after impoundment is a major hidden danger affecting the safety and long-term stable operation of high dam structure. In this paper, the stability of the Xiluodu Hydropower Station slope is analyzed by the combination of micro-seismic monitoring technology and finite element method. The temporal and spatial distribution of the micro-seismic activity and the variation of the micro-seismic energy density are studied. The distribution characteristics of micro-cracks in rock mass of right bank slope and the variation law of slope stress under different water levels are analyzed. The intrinsic relationship between slope stress and micro-seismic events is revealed. The results show that: (1) The micro-seismic activity is positively correlated with the water level. (2) The 580 m water level is the sensitive characteristic water level of Xiluodu Hydropower Station. (3) The micro-seismic events of the slope are caused by the change of rock stress. The method of combining the micro-seismic monitoring with the numerical simulation can evaluate the damage of rock mass effectively and predict the potential instability area of the slope. The results of the research are of great significance to the similar underground engineering construction.

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.