论文部分内容阅读
高坝大库水电站中沥青混凝土心墙堆石坝所处地形地质环境复杂、心墙单薄、荷载大、应力水平高以及大坝渗流与变形机理复杂,因而大坝的运行安全掌控与评价难度很大。为此,结合已建的某高沥青心墙堆石坝工程,研究原型观测特性及三维应力变形规律,并将数值模拟结果与原型观测数据进行比较。结果表明,坝体最大沉降为1.56m,发生在约为坝体1/2高程处,最大沉降约为坝高的1.2%;大坝变形特性符合心墙堆石坝变形的一般规律,大坝右岸沉降变形较左岸大,整体而言,大坝变形趋于稳定,数值模拟与原型观测数据基本一致。
The geomorphic environment of asphalt concrete core rockfill dam in high dam large reservoir hydropower station is complex, the core wall is thin, the load is big, the stress level is high, and the seepage and deformation mechanism of the dam is complex. Therefore, it is very difficult to control and evaluate the operation safety of the dam Big. Therefore, combined with the construction of a high-aspect asphalt core wall rockfill dam project, the prototype observation characteristics and the three-dimensional stress and deformation laws are studied. The numerical simulation results are compared with the prototype observation data. The results show that the maximum settlement of the dam body is 1.56m, occurring at about 1/2 elevation of the dam body, and the maximum settlement is about 1.2% of the dam height. The deformation characteristics of the dam are in accordance with the general laws of deformation of the core rockfill dam. The deformation of the right bank is larger than that of the left bank. As a whole, the deformation of the dam tends to be stable, and the numerical simulation and the prototype observation data are basically the same.