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The slurry is used for underground diaphragm walls close to rivers and seas

An underground diaphragm wall and mud technology, which is applied in the field of underground engineering construction, can solve problems such as the inapplicability of underground diaphragm wall mud wall protection, and achieve the effects of increasing density and viscosity, reducing water loss and improving stability.

Inactive Publication Date: 2020-10-13
浙江土工岩土科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing mud is not suitable for mud retaining of the underground diaphragm wall in the coastal area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The component that is used for the mud that provides in the present embodiment is adjacent to the underground continuous wall of river and sea comprises: Bentonite 160Kg / m 3 , soda ash 4.7Kg / m 3 And sodium carboxymethyl cellulose 0.7Kg / m 3 , Neptune polymer chemical mud 0.8Kg / m 3 , water 9Kg / m 3 .

[0025] The above-mentioned mixing ratio is used to prepare mud, and the index performance is tested by mud hydrometer, funnel method, pH test paper, water loss meter, etc. The test results are as follows:

[0026] Viscosity: T=40S;

[0027] Density: ρ=1.15g / cm 3 ;

[0028] Water loss: B=25ml / 30min;

[0029] pH value: pH=8.

Embodiment 2

[0031] The component that is used for the mud that provides in the present embodiment is adjacent to the underground continuous wall of river and sea comprises: Bentonite 180Kg / m 3 , soda ash 4.9Kg / m 3 And sodium carboxymethyl cellulose 0.9Kg / m 3 , Neptune polymer chemical mud 1.2Kg / m 3 , water 10Kg / m 3 .

[0032] The above-mentioned mixing ratio is used to prepare mud, and the index performance is tested by mud hydrometer, funnel method, pH test paper, water loss meter, etc. The test results are as follows:

[0033] Viscosity: T=42S;

[0034] Density: ρ=1.18g / cm 3 ;

[0035] Water loss: B=23ml / 30min;

[0036] pH value: pH=8.

Embodiment 3

[0038] The component that is used for the mud that provides in the present embodiment is adjacent to the underground continuous wall of river and sea comprises: Bentonite 175Kg / m 3 , soda ash 4.884Kg / m 3 And sodium carboxymethyl cellulose 0.8Kg / m 3 , Neptune polymer chemical mud 1Kg / m 3 , water 9.5Kg / m 3 .

[0039] The above-mentioned mixing ratio is used to prepare mud, and the index performance is tested by mud hydrometer, funnel method, pH test paper, water loss meter, etc. The test results are as follows:

[0040] Viscosity: T=44S;

[0041] Density: ρ=1.25g / cm 3 ;

[0042] Water loss: B=22ml / 30min;

[0043] pH value: pH=8.5.

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PUM

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Abstract

The invention relates to slurry for an underground diaphragm wall close to rivers and seas. The slurry is prepared from the following components: 160 kg / m3 to 180 kg / m3 of bentonite, 4.7 kg / m3 to 4.9kg / m3 of dispersing agent, 0.7 kg / m3 to 0.9 kg / m3 of cellulose sodium salt, 0.8 to 1.2 kg / m3 of Neptune polymer chemical slurry and 9 to 10 kg / m3 of water are used. The density and viscosity ofthe slurry can be effectively improved, the slurry water loss is reduced, and the stability of the tank wall can be effectively improved by using the slurry in the construction process.

Description

technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a mud used for underground continuous walls adjacent to rivers and seas. Background technique [0002] The underground diaphragm wall refers to the continuous wall constructed below the bottom surface to support the building load, water cutoff and anti-seepage or soil retaining support; generally, the underground diaphragm wall is constructed by using various grooving machines and by means of the wall protection function of mud. Dig a narrow and deep trench underground, and pour appropriate materials into it to form a continuous underground wall with anti-seepage (water), soil retaining and load-bearing functions. [0003] For construction in the coastal area, the infiltration of the saturated water-bearing sand layer, especially the brackish water in the sea, into the tank wall is a major problem in the engineering field, and engineering disasters su...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/27
CPCC04B28/001C04B2111/27C04B2201/10C04B2201/20C04B22/10C04B24/383C04B2103/0068C04B22/002C04B14/368C04B18/26
Inventor 程亮
Owner 浙江土工岩土科技有限公司
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