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Method for rapidly monitoring high face rockfill dam extrusion sidewall deformation

A technology of face rockfill dam and extruded side wall, which is applied to measurement devices, optical devices, instruments, etc., can solve the problems of poor effectiveness, high measurement accuracy, and high data resolution, and achieves fast data acquisition speed and data collection. The effect of high efficiency and high data resolution

Active Publication Date: 2016-12-14
CHINA THREE GORGES UNIV
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for quickly monitoring the deformation of the squeezed side wall of a high-face rockfill dam, which can solve the shortcomings of traditional monitoring methods such as complexity, time and effort, low precision, and poor effectiveness. The introduction of three-dimensional laser scanning The technology quickly monitors the deformation of the squeezed side wall of the high-face rockfill dam, with high data collection efficiency, fast data acquisition speed, high data resolution, high measurement accuracy, and non-contact measurement

Method used

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  • Method for rapidly monitoring high face rockfill dam extrusion sidewall deformation
  • Method for rapidly monitoring high face rockfill dam extrusion sidewall deformation
  • Method for rapidly monitoring high face rockfill dam extrusion sidewall deformation

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Embodiment 1

[0044] Project Overview

[0045] Centianhe Reservoir is located at the exit of Xiaoshui River, a tributary of Xiangjiang River, in Jianghua Yao Autonomous County, Yongzhou City, Hunan Province, 12km away from Jianghua County. Due to the low height of the old dam, small reservoir capacity and low regulation capacity, the Centianhe Reservoir has long been in the embarrassing situation of "overcapacity and underutilization" and cannot meet the needs of economic and social development. Therefore, according to comprehensive factors such as topographic and geological conditions in the dam site area, the new dam (extension project) is built downstream of the old dam, the axis of the new dam is 194.9m away from the axis of the old dam, and the upper edge of the toe plate of the riverbed section is 8m away from the toe of the old overflow dam , the old dam will be used as the upstream cofferdam during the construction period.

[0046] The dam type of the Centianhe Reservoir Expansion ...

Embodiment 2

[0083] Comparative Validation Analysis

[0084] Aiming at whether the monitoring result of the above-mentioned embodiment 1 conforms to the actual deformation monitoring value of the extruded side wall, compare the total station with the prism method and the method proposed in this patent to verify its rationality. See Figure 7 .

[0085] In order to compare the similarities and differences between the total station combined with the prism method and the three-dimensional laser scanning method in monitoring the deformation of the extrusion side wall, the monitoring data of two phases on August 6, 2015 and October 8, 2015 were selected for analysis, and the prism was drawn using Surfer software The actual measurement of the displacement field along the river and vertical direction of the squeezed side wall on October 8, 2015 relative to August 6, 2015, see Figure 8 .

[0086] From Figure 5 , 6 and 8, it can be seen that on August 6, 2015 and October 8, 2015, the three-d...

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Abstract

The invention provides a method for rapidly monitoring high face rockfill dam extrusion sidewall deformation. The method comprises the following steps that step 1: preparation before monitoring and data acquisition are performed; and step 2: processing and analysis are performed based on the point cloud data acquired in the step 1, and an extrusion sidewall relative deformation graph is drawn by using surfer software so that rapid monitoring of high face rockfill dam extrusion sidewall deformation can be realized. According to the method for rapidly monitoring high face rockfill dam extrusion sidewall deformation, the disadvantages that the conventional monitoring means is complex, time-consuming and labor-consuming, low in precision and poor in real-time performance can be solved so that the data acquisition efficiency is high, data acquisition speed is fast and data resolution is high.

Description

technical field [0001] The invention relates to the field of side wall deformation monitoring, in particular to a method for quickly monitoring the deformation of the extrusion side wall of a high face rockfill dam during construction. Background technique [0002] Concrete face rockfill dam is a commonly used dam type with rockfill body as supporting structure and concrete face as anti-seepage structure on its upstream surface. This type of dam has a series of advantages such as low investment, short construction period, good safety, and local materials. It has been widely used in dam industry at home and abroad. [0003] From upstream to downstream, the structure of face rockfill dam mainly consists of face plate, extruded side wall, cushion, transition zone, main rockfill, secondary rockfill and other parts. During the construction of the dam, the construction sequence is generally to fill the primary and secondary rockfills and the transition zone first, then to constru...

Claims

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Application Information

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IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 黄耀英万智勇赵新瑞高俊袁斌
Owner CHINA THREE GORGES UNIV
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