Silt slope stability control method for fixing slope by using chemical improvement reagent

A technology of stability control and chemical improvement, applied in the direction of chemical instruments and methods, excavation, application, etc., can solve problems such as collapse and easy deformation of foundation pit construction

Pending Publication Date: 2021-09-10
杭州交投建设工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for controlling the stability of silt slopes using chemical improvement reagents to consolidate slopes, so as to solve the problems of easy deformation and collapse of foundation pit construction in silt areas

Method used

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  • Silt slope stability control method for fixing slope by using chemical improvement reagent
  • Silt slope stability control method for fixing slope by using chemical improvement reagent
  • Silt slope stability control method for fixing slope by using chemical improvement reagent

Examples

Experimental program
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Effect test

Embodiment 1

[0046] This embodiment discloses a method for controlling the stability of a silt slope using chemical improvement reagents for slope consolidation, including the following steps:

[0047] 1) Configure chemical improvement reagents. Wherein, the chemical improvement reagent is made by mixing improved materials with water, the improved materials are lime, sodium silicate, silicon micropowder or calcium lignosulfonate, and the mass ratio of lime to water is 10:90-15:85, The mass ratio of microsilica powder to water is 10:90-15:85, and the mass ratio of calcium lignosulfonate to water is 10:90-15:85. In this embodiment, sodium silicate is selected as the improved material, and sodium silicate is mixed with water in a predetermined ratio to form water glass.

[0048] 2) Put the configured chemical modification reagent into the solution pool 401 .

[0049] 3) see figure 1 , pressing the lower end of the grouting steel pipe 404 into the silt layer of the slope until the pressing ...

Embodiment 2

[0070] This embodiment discloses a method for controlling the stability of a silt slope using chemical improvement reagents for slope consolidation, including the following steps:

[0071] 1) Configure chemical improvement reagents. Wherein, the chemical improvement reagent is made by mixing improved materials with water, the improved materials are lime, sodium silicate, silicon micropowder or calcium lignosulfonate, and the mass ratio of lime to water is 10:90-15:85, The mass ratio of microsilica powder and water is 10:90-15:85, the mass ratio of calcium lignosulfonate and water is 10:90-15:85, and sodium silicate and water are mixed according to a predetermined ratio to form water glass. In this embodiment, lime is selected as the chemical improvement agent, and lime is mixed with water to form a suspension.

[0072] 2) Put the configured chemical modification reagent into the solution pool 401 .

[0073] 3) see figure 1 , pressing the grouting steel pipe 404 into the sil...

Embodiment 3

[0083] This embodiment discloses a method for controlling the stability of a silt slope using chemical improvement reagents for slope consolidation, including the following steps:

[0084] 1) Configure chemical improvement reagents. Wherein, the chemical improvement reagent is made by mixing improved materials with water, the improved materials are lime, sodium silicate, silicon micropowder or calcium lignosulfonate, and the mass ratio of lime to water is 10:90-15:85, The mass ratio of silicon micropowder and water is 10:90-15:85, the mass ratio of calcium lignosulfonate and water is 10:90-15:85, and sodium silicate and water are mixed according to a predetermined ratio to form water glass.

[0085] 2) Put the configured chemical modification reagent into the solution pool 401 .

[0086] 3) Determine the reinforcement method of the slope 3 according to the design reinforcement depth of the slope 3. When the reinforcement depth of the slope 3 is small, spray the prepared chemi...

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Abstract

The invention discloses a silt slope stability control method for fixing slope by using a chemical improvement reagent. The method comprises the following steps that 1) the chemical improvement reagent, which is a mixed solution of lime, sodium silicate, silica powder or calcium lignosulphonate and water, is prepared; 2) a chemical improvement reagent is put into a solution tank; 3) a plurality of grouting steel pipes are sequentially pressed into a silt layer of the side slope, and the grouting steel pipes are connected through grouting pipe connecting valves till the total length of the grouting steel pipes reaches the designed depth; 4) a grouting hose is connected between the solution tank and the grouting steel pipes, and a grouting pump is arranged on the grouting hose; 5) a grouting pump is started, a chemical improvement reagent is injected into the silt layer, and the grouting steel pipes are gradually lifted until the grouting steel pipes are separated from the ground surface; 6) the grouting pump is closed, and the grouting steel pipes are disassembled; and 7) the steps 3)-6) are repeated, and construction of the next grouting point is conducted till grouting is completed in all the set areas of the slope. According to the method, the internal friction angle and cohesive force of silt are increased through the chemical improvement reagent, and slope reinforcement is achieved.

Description

technical field [0001] The invention relates to the field of slope construction, in particular to a method for controlling the stability of a silt slope by using chemical improvement reagents for slope consolidation. Background technique [0002] In the riverside silt area, the groundwater level of the foundation pit changes greatly under conditions such as strong tides. The silt strata are common in my country's coastal areas. The low strength and strong permeability of silt are the problems that need to be faced in the construction of water transport infrastructure such as large ship locks and ports. The engineering characteristics of silt are often characterized by high water content, low strength, high compressibility, high water permeability, and large differences in regional soil properties. When excavating deep foundation pits in coastal areas with deep silt layers, when the soil in the pit is excavated, the stress field and deformation field of the foundation will c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D3/12E02D15/04C09K17/12C09K17/06C09K17/02C09K17/14C09K103/00
CPCE02D17/20E02D3/12E02D15/04C09K17/12C09K17/06C09K17/02C09K17/14E02D2250/0023E02D2300/0004C09K2103/00
Inventor 赵殿鹏宋叶青陈妙初潘国华刘明维阿比尔的孔增增
Owner 杭州交投建设工程有限公司
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