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High earth and rockfill dam anti-seepage earth material blending construction method

A technology for high earth-rock dams and construction methods, which is applied in the direction of dams, barrages, and infrastructure engineering, etc. It can solve the problems that the soil materials in the stockyard cannot meet the design requirements, etc., so as to facilitate on-site construction operations, simple mixing process, and improve construction efficiency Effect

Pending Publication Date: 2022-05-13
SINOHYDRO BUREAU 5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the different topography and geological conditions in the dam building area cause the soil material in the stockyard to fail to meet the design requirements. The problem of mixing and adjusting soil materials

Method used

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  • High earth and rockfill dam anti-seepage earth material blending construction method
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  • High earth and rockfill dam anti-seepage earth material blending construction method

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Effect test

Embodiment 1

[0066] This embodiment is aimed at a high earth-rock dam anti-seepage soil mixing construction method aimed at the natural gradation of crushed stone soil in the stockyard meeting the requirements and the preparation strength of the crushed stone soil meeting the requirements, including:

[0067] The first step is to determine the location of the stockyard, and conduct vertical sampling of the soil layer of the stockyard. In order to facilitate clear measurement, repeated sampling can be carried out at multiple locations to facilitate accurate sampling.

[0068] In the second step, based on the sampling data, the parameters of the soil layer are detected, including water content, P5 content, clay content, and bulk density. In this step, relevant data can be measured in the laboratory through traditional methods.

[0069] The third step is to determine the clay layer and gravel soil layer, and divide the clay layer and gravel soil layer according to the measured P5 content and c...

Embodiment 2

[0085] According to the mining situation in the soil material field, combined with the sampling test results of the soil material, when the natural gradation of the gravel soil cannot meet the requirements, the natural grades of the clay layer and the gravel soil layer obtained by sampling the corresponding production area in the soil material field Mixing and water content, this embodiment is a high earth-rock dam anti-seepage soil mixing construction method for the natural gradation of gravel soil in the stockyard that does not meet the requirements but the strength of the crushed soil preparation meets the requirements, including:

[0086] The first step is to determine the location of the stockyard and sample the soil layer in the vertical direction;

[0087] In the second step, according to the sampling data, the parameters of the soil layer are detected, including water content, P5 content, clay content, and bulk density;

[0088] The third step is to determine the clay ...

Embodiment 3

[0107] This embodiment is a high earth-rock dam anti-seepage soil mixing construction method for the natural gradation of gravel soil in the stockyard that does not meet the requirements and the strength of the crushed soil preparation does not meet the requirements, including:

[0108] The first step is to determine the location of the stockyard and sample the soil layer in the vertical direction;

[0109] In the second step, according to the sampling data, the parameters of the soil layer are detected, including water content, P5 content, clay content, and bulk density;

[0110] The third step is to determine the clay layer and gravel soil layer;

[0111] The fourth step is to set the value range of the soil layer parameters, and re-layer the gravel soil layer in the stockyard according to the value range;

[0112] The fifth step is to determine the average parameters of each gravel soil layer after delamination in the stockyard; the setting strength of gravel soil preparat...

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Abstract

The invention discloses a high earth and rockfill dam anti-seepage earth material blending construction method which comprises the following steps: determining the position of a stock ground, sampling, detecting soil layer parameters, determining a clay layer and a gravel soil layer, layering the gravel soil layer of the stock ground again, determining the average parameter of each gravel soil layer after layering of the stock ground again, and calculating the blending ratio value and the water adding amount. Performing layered blending in a blending field according to a calculation result, adding water to adjust the P5 content and the water content, detecting the prepared soil material, and if the detection is qualified, performing high earth and rockfill dam filling; if the detection result is not qualified, blending again; according to the method, investigation and soil property analysis are carried out on a soil layer at the position of a damming material field, a soil material blending field is arranged in a damming area according to the distribution nonuniformity and the water content deviation of soil materials, and blending of anti-seepage soil materials is completed by utilizing the soil materials in different layers on site, so that the anti-seepage effect of the anti-seepage soil materials is improved. The quality meets the design requirement, the requirement of dam high-strength filling construction can be met in the aspect of productivity, the transportation cost is reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of earth-rock dam construction, in particular to a method for mixing anti-seepage soil materials for high earth-rock dams. Background technique [0002] Due to its high shear strength, good impermeability and good compaction performance, crushed stone soil material has gradually become the preferred anti-seepage material in high core rockfill dams. According to statistics, among foreign earth-rock dams with a height of more than 100m, 70% of them use gravel soil materials as anti-seepage materials. [0003] Due to the different terrain and geological conditions in the dam construction area, the soil materials in the gravel and earth material field may be uneven in plane position and elevation distribution, resulting in the failure to achieve the design even if the excavator is used for the mixed operation of front and back hoe vertical mining. At the same time, the water content of the soil material in the stockyard ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/00E02B7/06G06F17/18G06Q50/08
CPCE02D15/00E02B7/06G06F17/18G06Q50/08
Inventor 熊亮袁幸朝薛凯张振车维斌
Owner SINOHYDRO BUREAU 5
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