基于时空演化规律的某水库边坡稳定性及其变形特征分析

发布时间：2018-03-03 02:03

本文选题：水电工程　切入点：时空演化规律　出处：《重庆交通大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：基于斜坡变形破坏的时空演化规律,对西南某水电站坝前右岸边坡的稳定性进行研究,并结合边坡变形监测数据,对边坡变形与库水位升降之间的关系进行了分析。结果表明:滑坡周边裂缝还未形成,裂缝体系尚未圈闭,根据斜坡变形破坏的空间演化规律判断,边坡目前处于基本稳定状态,不存在发生滑坡的危险;随着库水位的基本稳定,边坡变形量逐渐趋于稳定增长,无进入加速变形阶段迹象,根据斜坡变形破坏的时间演化规律判断,目前边坡不存在发生滑坡的危险;水位升降过程中边坡内部分别会形成指向坡内和坡外的渗流场,其将极大地影响边坡的稳定性;因边坡变形受水库蓄放水影响明显,建议加强水库蓄放水过程中地表裂缝巡视及监测数据的分析。
[Abstract]:Based on the temporal and spatial evolution law of slope deformation and failure, the stability of the right bank slope in front of a hydropower station in southwest China is studied, and the slope deformation monitoring data are combined. The relationship between slope deformation and reservoir water level rise and fall is analyzed. The results show that the cracks around the landslide are not formed and the fracture system has not been trapped. The slope is in a stable state at present, and there is no danger of landslide. With the basic stability of the reservoir water level, the deformation of the slope gradually tends to increase steadily, and there is no sign of entering the accelerated deformation stage. According to the time evolution law of slope deformation and failure, there is no danger of landslide in the slope at present, and the seepage field which points to the slope and outside the slope will be formed in the process of water level rise and fall, which will greatly affect the stability of the slope. Because the slope deformation is obviously affected by reservoir water storage and discharge, it is suggested to strengthen the inspection of surface cracks and analysis of monitoring data during reservoir storage and discharge.
【作者单位】：中国电建集团成都勘测设计研究院有限公司;
【分类号】：TV223

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