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

摘要： 基于某心墙堆石坝长序列实测监测数据，以土压力、心墙沉降、水压力、孔隙水压力等测值定量计算分析结果为依据，以拱效应系数、上游水压力与心墙竖向应力比值、心墙孔隙水压力与心墙竖向应力比值等指标作为分析评判标准，提供了一种基于实测资料的超高心墙堆石坝拱效应分析方法和算例，系统分析了该高心墙堆石坝拱效应程度、分布规律及心墙发生水力劈裂的可能性，并与该心墙堆石坝数值计算结果进行对比分析和验证。分析结果表明，基于实测资料的计算分析结果与数值计算分析结果具有一致性，该分析方法具有合理性和可行性，可为同类工程的设计、施工和运行提供借鉴和参考。

关键词: 心墙堆石坝, 实测资料, 计算分析, 拱效应, 水力劈裂