Accurate processing method of arch dam vertical line monitoring data

Abstract

The invention relates to an accurate processing method of arch dam vertical line monitoring data. The invention aims to provide an accurate processing method of arch dam vertical line monitoring datasuitable for a hyperbolic arch dam. According to the technical scheme, the method comprises: determining an overall coordinate system of an arch dam; establishing local coordinate systems with the tangential direction and the radial direction of the corresponding measuring points as coordinate axes at the vertical line measuring point positions of different elevations of the arch dam respectively;calculating to obtain a coordinate transformation matrix of the local coordinates of each measuring point to the overall coordinate system according to the arch dam body equation; measuring and reading tangential and radial displacement increments of corresponding point positions at each measuring point of a vertical line; according to a vector coordinate transformation rule, transforming the increment of the displacement component of each measurement point to an overall coordinate system by using a coordinate transformation matrix; calculating the displacement component of each measuring point of the vertical line of the arch dam under the overall coordinate system through an algebraic summation method, and obtaining the accurate values of the radial displacement and the tangential displacement of each measuring point through the coordinate inverse transformation of the displacement vector. The method is suitable for the field of dam safety monitoring.

Description

technical field [0001] The invention relates to an accurate processing method for vertical line monitoring data of an arch dam. It is applicable to the field of dam safety monitoring. Background technique [0002] With the rapid development of my country's water conservancy and hydropower construction, the number of arch dams constructed and put into operation continues to increase. The arch dam is a space shell structure, and its operating behavior is greatly affected by its own structural characteristics, geological conditions and operating environment. As the dam height of the arch dams constructed in recent years has been increasing, the service time of some arch dams put into operation in the early years is also getting longer and longer. The long-term operation safety of arch dams is facing serious challenges, especially the safety problems of high arch dams. [0003] The operational behavior of arch dams is difficult to observe with the naked eye. Although numerical...

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Problems solved by technology

[0006] The above processing method of vertical line monitoring data is accurate for single-curvature arch dams, but most of the large-scale arch dams are double-curvature arch dams. The radial direction and the tangential direction are not consistent. If the radial displacement increment and tangential displacement increment of different elevation vertical line measuring points are directly processed by the algebraic sum method, it will lead to a large displacement measurement of the arch dam. error

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