魁龙水库大坝采用砾岩料筑坝的应力变形研究与监测成果分析

Research on Stress and Deformation of Kuilong Reservoir Dam Built with Conglomerate Materials and Analysis of Monitoring Results

魁龙水库大坝为混凝土面板堆石坝,大坝采用“砾岩+灰岩”料填筑,因砾岩料物质成分多为机械式胶结,强度低,在饱水状态下稳定性较差,易软化、崩解和离散,且含泥量大于10%。经采用砾岩料筑坝的材料试验和三维应力变形分析计算及研究论证,对大坝结构安全提供可靠依据。从大坝施工期至初蓄期安全监测成果分析表明,各监测量及其变化基本在正常范围内,大坝安全性态基本正常。

The Kuilong Reservoir Dam is a concrete faced rockfill dam,which is filled with'conglomerate+limestone'material.Due to the fact that the material composition of conglomerate is mostly mechanically cemented,with low strength and poor stability under saturated conditions,it is prone to softening,disintegration,and dispersion,and has a mud content greater than 10%.Through material testing and three-dimensional stress deformation analysis and research demonstration using conglomerate materials for dam construction,reliable basis is provided for the safety of the dam structure.The analysis of safety monitoring results from the dam construction period to the initial storage period shows that all monitoring measurements and their changes are basically within the normal range,and the safety status of the dam is basically normal.