关键词: 心墙堆石坝, 实测资料, 计算分析, 拱效应, 水力劈裂

Abstract: Based on the monitoring data of a core-wall rock-fill dam, taking the quantitative calculation and analysis results of the measured earth pressure, core wall settlement, water pressure and pore water pressure as the basis, considering the arch effect coefficient, the ratio of upstream water pressure to core wall vertical stress, the ratio of core wall pore water pressure to core wall vertical stress and other indicators as the analysis and evaluation criteria, the arch effect degree, distribution law and the possibility of hydraulic fracturing of the core wall are systematically analyzed and compared with the numerical calculation results. The analysis results show that the calculation and analysis results based on the measured data are consistent with the numerical calculation and analysis results, and the analysis method is reasonable and feasible, which can provide reference for the design, construction and operation of similar projects.

Key words: core-wall rock-fill dam, measured data, calculation and analysis, arch effect, hydraulic , fracturing