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Model test apparatus and test method for monitoring dam saturation line

A technology of model test device and wetting line, which is applied in the direction of displaying liquid level indicator through pressure measurement, etc., can solve the problems of difficulty in determining the rationality and representativeness of analysis results, etc.

Inactive Publication Date: 2013-08-14
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because theoretical analysis and numerical calculation are greatly affected by factors such as parameter selection, model selection, and constitutive relations, it is difficult to determine the rationality and representativeness of the analysis results.
The field test work is greatly affected by environmental factors, human factors, etc., and it is difficult to conduct multi-working condition test analysis on the research content

Method used

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  • Model test apparatus and test method for monitoring dam saturation line
  • Model test apparatus and test method for monitoring dam saturation line
  • Model test apparatus and test method for monitoring dam saturation line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Example 1: The dam body is filled with clay materials, and the water inflow speed is 5cm / min, 10cm / min, 15cm / min.

[0112] (1) First close the drain valve and read the reading of the grating ruler. Open the water inlet valve, control the opening size of the water inlet valve, observe the reading of the water inlet flowmeter, and make the water flow into the water-facing side 17 of the dam body at a rate of 5 cm / min.

[0113] (2) While storing water, observe and record the changes in the water level of each piezometric tube and the readings of the grating ruler. According to the model scale, the observed time of the model test is 1 / 40 times of the corresponding actual time. During the decline of the water level in front of the dam, the change of the water level of the piezometric tube and the reading of the grating ruler were observed once every 2 times / 1 minute. After the water is stored to the maximum water storage height of 0.8m, close the water inlet valve. Stabil...

Embodiment 2

[0118] Example 2: The dam body is filled with clay materials, the water inlet speed is 5 cm / min, and the drainage speed is 0.25 cm / min, 0.45 cm / min, 0.65 cm / min.

[0119] (1) First close the drain valve and read the reading of the grating ruler. Open the water inlet valve, control the opening size of the water inlet valve, observe the reading of the water inlet flowmeter, make the water flow into the water side 17 of the dam body at a rate of 5cm / min, store water to the maximum water storage height of 0.8m, and close the water inlet valve. Stabilize for a period of time to fully saturate the dam body, read the readings of the grating ruler, and observe the water level of each piezometric tube until it is stable.

[0120] (2) Simulate the situation where the reservoir releases water and the water level in front of the dam drops. When the model slope reaches saturation and is in a stable state, open the drainage valve on the upstream side to release water, so that the water lev...

Embodiment 3

[0124] Example 3: The dam body is filled with clay and silt materials, the water inlet speed is 5 cm / min, and the drainage speed is 0.25 cm / min, 0.45 cm / min, and 0.65 cm / min.

[0125] (1) Fill the dam body with clay materials, close the drainage valve, and read the reading of the grating ruler. Open the water inlet valve, control the opening size of the water inlet valve, observe the reading of the water inlet flowmeter, make the water flow into the water side 17 of the dam body at a rate of 5cm / min, store water to the maximum water storage height of 0.8m, and close the water inlet valve. Stabilize for a period of time to fully saturate the dam body, read the readings of the grating ruler, and observe the water level of each piezometric tube until it is stable.

[0126] (2) Simulate the situation where the reservoir releases water and the water level in front of the dam drops. When the model slope reaches saturation and is in a stable state, open the drainage valve on the ups...

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Abstract

The invention discloses a model test apparatus for monitoring a dam saturation line. The model test apparatus comprises a model tank; an upstream-side drainage mechanism which is communicated with the inside of the model tank is arrange at one end of the model tank, a water level monitoring mechanism and a downstream-side drainage mechanism which are communicated with the inside of the model tank are arranged at the other opposite end of the model tank, and a water inlet mechanism which is communicated with the inside of the model tank is arranged at the bottom of the model tank; a pressure measuring mechanism which is communicated with the inside of the model tank is arranged in the front of the model tank; and a model is arranged in the model tank, and a dam displacement monitoring mechanism is arranged on the model. The invention further discloses a test method implemented by the aid of the apparatus. The model test apparatus and the test method have the advantages that the model test apparatus and the test method can be applied to indoor simulation tests and research on dam saturation lines in various structural forms and filling types under various working conditions, changes of the saturation line under different working conditions can be observed via indoor sand tank model testes, main influencing factors and relevant change laws of retardation of the saturation line are studied, and data and reference are provided for further theoretical study.

Description

technical field [0001] The invention relates to a dam body seepage line monitoring model test device and a test method thereof. Background technique [0002] The core wall in an earth-rock dam is the anti-seepage part of the dam body, which mainly plays an anti-seepage role in the operation of the dam body, and the stability of the dam mainly depends on the upstream and downstream dam shells to maintain. Therefore, the soil material of the core wall generally has a large clay content, a small average particle size, and a low permeability coefficient. Due to the large difference in permeability coefficient between the dam shell material and the core wall material, it is generally believed that the infiltration head on the upstream side of the core wall is the reservoir water level, that is, the water retaining level of the core wall is the reservoir water level in front of the dam. [0003] It is generally believed that the rise and fall of the reservoir water level will cau...

Claims

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Application Information

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IPC IPC(8): G01F23/14
Inventor 马秀媛宋修广孙洁吴建清臧亚囡金壮孙元帅
Owner SHANDONG UNIV
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