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A kind of preparation method of crushed stone clay core wall material

A manufacturing method and clay core wall technology, which is applied in sea area engineering, construction, dams, etc., can solve the problems of poor uniformity of admixture, large amount of civil engineering, high construction cost, etc., and achieve small amount of civil engineering, high output and high quality Good results

Active Publication Date: 2019-01-04
GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common methods mentioned above generally have one or more of the following defects: complex process, large amount of civil engineering, poor uniformity of admixture, high construction cost

Method used

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  • A kind of preparation method of crushed stone clay core wall material
  • A kind of preparation method of crushed stone clay core wall material
  • A kind of preparation method of crushed stone clay core wall material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mixing crushed stone clay core wall material with 25% crushed stone content:

[0036] The production flow chart of crushed stone clay core wall material is as follows figure 1 As shown, the elevation mining backhoe mixing process diagram is as follows figure 2 shown.

[0037] Blending field specification: 8m×15m;

[0038] The single layer thickness of clay material paving is 75cm, and the single layer thickness of gravel material paving is 25cm, alternate horizontal paving, clay material is paved for the first time, a total of 6 layers;

[0039] After the paving is completed, use a backhoe excavator to excavate the facade with a thickness of 40cm, and mix it 4 times with a backhoe excavator;

[0040] The quality inspection adopts the method of measuring the mass content and uniformity of gravel in the admixture. The content of gravel in the admixture is controlled within ±5% of the design content. Seven positions were sampled to detect the crushed stone content. Th...

Embodiment 2

[0042] Mixing crushed stone clay core wall material with 30% crushed stone content:

[0043] The production flow chart of crushed stone clay core wall material is as follows figure 1 As shown, the elevation mining backhoe mixing process diagram is as follows figure 2 shown.

[0044] Blending field specification: 8m×15m;

[0045] The single layer thickness of clay material paving is 70cm, and the single layer thickness of gravel material paving is 30cm, alternate horizontal paving, clay material paving for the first time, a total of 6 layers;

[0046] After the paving is completed, use a backhoe excavator to excavate the facade with a thickness of 40cm, and mix it 4 times with a backhoe excavator;

[0047] The quality inspection adopts the method of measuring the mass content and uniformity of gravel in the admixture. The content of gravel in the admixture is controlled within ±5% of the design content. Seven positions were sampled to detect the crushed stone content. The ...

Embodiment 3

[0049] Mixing crushed stone clay core wall material with 35% crushed stone content:

[0050] The production flow chart of crushed stone clay core wall material is as follows figure 1 As shown, the elevation mining backhoe mixing process diagram is as follows figure 2 shown.

[0051] Blending field specification: 8m×15m;

[0052] The single layer thickness of clay material paving is 65cm, and the single layer thickness of gravel material paving is 35cm, alternate horizontal paving, clay material is paved for the first time, a total of 6 layers;

[0053] After the paving is completed, use a backhoe excavator to excavate the 50cm thick facade, and backhoe excavator to mix 3 times;

[0054] The quality inspection adopts the method of measuring the mass content and uniformity of gravel in the admixture. The content of gravel in the admixture is controlled within ±5% of the design content. Seven positions were sampled to detect the crushed stone content. The uniformity of the c...

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Abstract

The invention discloses a manufacturing method of breakstone clay core wall material. The manufacturing method comprises the following steps: (1) arranging a blending site for excavating an upper dam and a blending site for material preparation; (2) determining the size grading and moisture content of breakstone and clay, and then calculating to determine the mass ratio of the breakstone to the clay; (3) determining the paving thickness of each layer, the interbedding number and the material pile design pile height of the breakstone and the clay; (4) carrying out a small-scale blending test; (5) correcting the paving parameters according to the result of the small-scale blending test, and then carrying out large-scale paving and blending; (6) after paving, adopting a backdigger to cut out leftover material to form an excavation vertical face; and (7) adopting the backdigger to carry out excavation on the vertical face and repeated blending to obtain the breakstone clay core wall material. According to the manufacturing method, the blending method that the clay and the breakstone are alternately paved layer by layer and the backdigger excavates on the vertical plane is adopted, the civil engineering quantity is smaller, the blending technology is simple, economic and high in quality, and the breakstone clay core wall material is high in yield.

Description

technical field [0001] The invention relates to a method for making a gravel clay core wall material. Background technique [0002] The core wall is an anti-seepage structure commonly used in earth-rock dams and rockfill dams, and is mainly filled with clay, gravel clay, and gravel clay. Among the various dam types of earth-rockfill dams, the crushed stone clay core rockfill dam has gradually become one of the mainstream dam types in high dam construction in the world. The mixing of crushed (gravel) clay core wall materials at home and abroad is mainly divided into the following methods: 1) forced continuous mixing; 2) belt conveyor transportation after mixing first and then stockpiling; 3) belt conveyor transportation layered material ; 4) stacking machine cloth layered material. The common methods mentioned above generally have one or more of the following defects: complex process, large amount of civil engineering, poor uniformity of admixture, and high construction cos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/06E02B3/16
CPCE02B3/16E02B7/06
Inventor 谢祥明陈伟平陈再余青山孟庆红谢小明
Owner GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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