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A kind of preparation method of high viscosity thixotropic mud

A thixotropic, high-viscosity technology, which is applied in the field of tunnel construction, can solve problems such as unstable opening and maintenance of mud membranes in soil silos, and difficult construction, so as to improve safety, stability, crack sealing, slag cleaning ability, Effect of improving high viscosity

Active Publication Date: 2018-09-21
佛山市泰迪斯材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The opening and maintenance time of the mud membrane in the conventional soil silo is unstable, and the mud membrane needs to be re-made in 1 to 3 days, which brings certain risks and difficulties to the construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of a kind of high viscosity thixotropic mud of the embodiment of the present invention can be expressed as follows:

[0021] 1) Two-component on-site preparation product, component A is modified bentonite, and the weight ratio of component A (Hengdun mud) to water is 1:2.0 (including component A powder 500kg, water 1000kg) to prepare mud , use a vertical rotary reflux mixing tank (add the upper half agitator and circulating pump at the same time) to stir evenly, and let it stand for 30 minutes to 45 minutes. The mud body of component A is required to be uniform and not agglomerated;

[0022] 2) Component B is the viscosifying additive sodium silicate solution, the dosage is 100kg (sodium silicate 40kg, water 60kg); The time is not less than 15 minutes;

[0023] 3) Use a horizontal mixing tank to fully stir the slurry of component A and the viscosity-increasing additive of component B, and then pour it;

[0024] In the embodiment of the present i...

Embodiment 2

[0026] The preparation method of a kind of high viscosity thixotropic mud of the embodiment of the present invention can be expressed as follows:

[0027] 1) Two-component on-site preparation product, component A is modified bentonite, the weight of component A (hengdun mud) and water, the ratio is 1:2.0 (of which component A powder 500kg, water 1000kg) to prepare For mud, use a shear pump to stir evenly, and let it stand for 30 minutes to 45 minutes. The mud body of component A is required to be uniform and not agglomerated;

[0028] 2) Component B is the viscosifying additive sodium silicate solution, the dosage is 100kg (sodium silicate 40kg, water 60kg); The time is not less than 15 minutes;

[0029] 3) Use a horizontal mixing tank to fully stir the slurry of component A and the viscosity-increasing additive of component B, and then pour it;

[0030] In the embodiment of the present invention, the mud body after mixing is a kind of high viscosity thixotropic mud, and its...

Embodiment 3

[0032] The preparation method of a kind of high viscosity thixotropic mud of the embodiment of the present invention can be expressed as follows:

[0033] 1) Two-component on-site preparation product, component A is modified bentonite, the weight of component A (hengdun mud) and water, the ratio is 1:1.5 (of which component A powder 500kg, water 750kg) to prepare For mud, use a vertical rotary reflux mixing tank (add the upper half agitator and circulation pump at the same time) to stir evenly, and let it stand for 30 minutes to 45 minutes. The mud body of component A is required to be uniform and not agglomerated;

[0034] 2) Component B is the viscosity-increasing additive sodium silicate solution, the dosage is 100kg (sodium silicate 40kg, water 60kg); The time is not less than 15 minutes;

[0035] 3) Use a horizontal mixing tank to fully stir the slurry of component A and the viscosity-increasing additive of component B, and then pour it;

[0036] In the embodiment of th...

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Abstract

The invention discloses a preparation method of high-viscosity thixotropic slurry. The method comprises the process steps: (1) preparing a product from double components on site, wherein a component A is modified bentonite, the mixing weight part ratio of the component A to water ranges from (1: 1.5) to (1: 3), the component B is a silicate type viscosity-enhancing additive and the weight part ratio of the component A to the component B on site ranges from (12.5: 1) to (20: 1); (2) after sufficiently and uniformly mixing the component A slurry, adding the component B viscosity-enhancing additive according to the ratio; sufficiently and uniformly mixing to form the high-viscosity thixotropic slurry and pouring. According to the preparation method disclosed by the invention, the inorganic bentonite and the water are prepared into the slurry and the additive is added to react to form the high-viscosity thixotropic slurry, so as to realize safe tunneling of a tunnel boring machine in a complex formation.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a high-viscosity thixotropic mud slurry used by a shield machine for processing water gushing, slag removal, pressure maintenance, and mud film preparation in complex rock and soil stratum excavation and a preparation method thereof . Background technique [0002] In the excavation construction of underground tunnels, shield machines are usually used for excavation. In complex weak rock mass excavation, shield machines will encounter broken rock formations, sand, eggs, gravel layers, karst caves, boulders and strata with upper soft and lower hard. As a result, the cutter head of the shield machine is chucked, the cutter falls off and cannot be excavated; the posture of the shield machine is not correct; the hollow surface subsides during excavation; the soil warehouse suddenly leaks water; The technical problems solved often bring safety risks to the shield machine d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26
CPCC04B28/26C04B14/12
Inventor 竺维彬邱小佩钟长平杨洋米晋生梁健涛黄威然谭建锋陈和
Owner 佛山市泰迪斯材料有限公司
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