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大坝安全监测是实时掌握被监测体的状态、保障其运行安全的重要手段,沉降是土石坝的一个监测重点。根据密云水库潮河主坝47 a来的沉降监测资料,选择有代表性的标点,绘制沉降过程曲线,进行回归分析,得出回归方程,对沉降进行预报,绘制大坝累计沉降量横断面、纵断面和等值线平面分布图,对大坝沉降的影响因素进行分析,揭示斜墙土石坝变形规律,判断大坝变形是否正常。
Dam safety monitoring is an important means of grasping the state of the monitored object in real time and ensuring the safety of its operation. Subsidence is a monitoring focus of earth dam. According to the monitoring data of the main dam of Miyun Reservoir over the past 47 years, a representative punctuation mark is selected to draw the curve of the settlement process, and the regression analysis is conducted. The regression equation is obtained, the settlement is predicted, the cumulative cross-section of the dam is plotted, Vertical section and contour line distribution map to analyze the influencing factors of dam settlement, reveal the deformation law of inclined wall earth and rock dam and judge whether the dam deformation is normal or not.