前坪水库施工期大坝变形特性分析

Analysis of dam deformation characteristics during construction of Qianping Reservoir

介绍了前坪水库主坝的工程地质概况及施工期安全监测设计,阐述了施工期安全监测成果,对施工期的坝体沉降规律及特征进行了深入分析。目前该主坝工程已施工完成,坝体变形量随观测高程的降低而递减,在坝顶衰减速率快,至坝基变形趋于稳定,大坝目前处于安全状态。安全监测为设计与施工提供了可靠依据。

This paper introduces the general situation of engineering geology and the design of safety monitoring during the construction of the main dam of Qianping Reservoir,expounds the safety monitoring results during the construction period in detail,and makes an in-depth analysis of the settlement law and characteristics during the construction period.At present,the main dam project has been completed.The deformation of the dam decreases with the decrease of the observed elevation,the attenuation rate is fast at the dam crest,and the deformation of the dam foundation tends to be stable.The dam is in a safe state at present.Safety monitoring provides a reliable basis for design and construction.