Monitoring Method of Core Wall Deformation of High Rockfill Dam

Abstract

The invention discloses a method for monitoring the deformation of the core wall of a high rockfill dam, which comprises the following steps: laying out an array robot, setting up a measurement carrier, pre-burying an incline measuring pipe, designing core components, performing measurement, solving the MEMS inertial navigation error equation, and calculating the corresponding axis The inclination angle, the displacement calculated according to the angle and the cumulative displacement calculated by integral; the present invention develops an array robot measurement system based on the principle of high-precision MEMS inertial navigation, and uses the deformation of the array robot to monitor the horizontal and vertical displacement of the core wall. The method of vertical burial is used to monitor the horizontal displacement, and the method of horizontal burial is used to monitor the vertical displacement, so as to realize automatic observation and completely replace manual observation. It can not only be buried horizontally, but also vertically, which makes up for the inconvenience of vertical burying of the pipeline robot measuring system.

Description

technical field [0001] The invention relates to the technical field of deformation monitoring, in particular to a method for monitoring deformation of a core wall of a high rockfill dam. Background technique [0002] The horizontal displacement and settlement of the central wall of large rockfill dams are the focus of the researchers. The traditional horizontal displacement is monitored by the movable inclinometer equipped with the inclinometer tube, and the angle and distance are measured to convert it into horizontal displacement. It is very suitable when the height of the dam body is not high, and it is also the method recommended in the code. However, when the height of the dam exceeds 300m, it will take a long time to manually pull the inclinometer cable, resulting in a long measurement time, and it is easy to cause human error to cause the inclinometer probe. Sliding, when a large deformation occurs, the inclinometer tube is easy to break and the probe cannot continue ...

AI Technical Summary

Problems solved by technology

[0002] The horizontal displacement and settlement of the central wall of large rockfill dams are the focus of the researchers. The traditional horizontal displacement is monitored by the movable inclinometer equipped with the inclinometer tube, and the angle and distance are measured to convert it into horizontal displacement. It is very suitable when the height of the dam body is not high, and it is also the method recommended in the code. However, when the height of the dam exceeds 300m, it will take a long time to manually pull the inclinometer cable, resulting in a long measurement time, and it is easy to cause human error to cause the inclinometer probe. Sliding, when a large deformation occurs, the inclinometer tube is easy to break and the probe cannot continue to complete the measurement task;

[0003] The sensor used in traditional settlement monitoring is an electromagnetic settlement ring, which is similar to the inclinometer for manual observation. Beware that the height of the wall exceeds 300m, the manual measurement time is long, the error is large, and there is a danger of the instrument slipping. Some researchers use distributed The optical fiber is used to monitor the vertical displacement, which is converted into displacement by monitoring the distribution of internal stress. This method relies on the protection of the optical fiber. When the deformation is large, the optical fiber is easy to break and cause the sensor to fail. At the same time, this method monitors the stress, not Directly measure the displacement, the measurement results are not very intuitive, and when the data is converted into displacement, the error is large and cannot match the displacement measurement result;

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