摘要
文中着重介绍了鱼背山面板堆石坝在施工期和蓄水期的变形观测结果。变形监测资料分析表明 :坝体内不同部位垂直沉降和水平位移 ,主要受施工期大坝主体工程填筑和水库蓄水的影响 ,坝基孔隙水压力变化与库水位变化成正比。在大坝运行初期 ,及时地分析和判断出面板的两处裂缝 ,在水库放空检查时 ,裂缝所在的部位和开裂宽度与监测结果非常吻合。为及时制定补救措施提供了科学依据。
This paper mainly analyzes the deformation monitoring results of Yubeishan concrete face rockfill dam during the period of construction and impoundment. The data measured show that the vertical and horizontal displacements of different points inside the dam are mainly caused by rock filling of the dam and water impoundment of the reservoir. The results also show that the crack water pressure in the dam foundation is proportional to the water level in the reservoir. During the early operation of the dam, two cracks in the concrete face were successfully forecasted and the actual positions and widths are in good agreement with the results measured after releasing the stored water. The analysis provided a scientific basis for the design of correct remedial measures.
出处
《大坝观测与土工测试》
2001年第2期24-27,共4页
Dam Observation and Geotechnical Tests
关键词
面板堆石坝
变形速率
面板周边缝
孔隙水压力
安全监测
concrete face rockfill dam
deformation rate
edge joint of concrete face
toe of concrete face
crack water pressure
forecast
