Pipe jacking thixotropic slurry and preparation method thereof

A technology of thixotropic mud and pipe jacking, which is applied in chemical instruments and methods, agriculture, organic fertilizers, etc. It can solve the problems of unreasonable mixing ratio of thixotropic mud, high construction cost, poor drag reduction effect, etc., and achieve outstanding lubricity and rebound effect, increase pipe jacking speed, and reduce frictional resistance

Active Publication Date: 2021-06-01
CHINA CONSTR FIRST BUILDING GRP CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a pipe jacking thixotropic mud and a preparation method thereof; the technical problem to be solved is: to propose a pipe jacking thixotropic mud and a preparation method thereof, aiming at solving the problem of poor drag reduction effect caused by unreasonable mixing ratio of the existing thixotropic mud Waste of materials, cumbersome preparation, high construction costs, and even technical problems that may pollute the environment

Method used

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  • Pipe jacking thixotropic slurry and preparation method thereof
  • Pipe jacking thixotropic slurry and preparation method thereof
  • Pipe jacking thixotropic slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A pipe jacking thixotropic mud, made of the following components by weight ratio: 7% sodium bentonite, 0.2% sodium carbonate, 0.1% polymer coagulant, MMH positive gel and / or xanthan gum 0.5% %, pregelatinized starch 1%, modified graphite and / or glass pellets 1%, water 90.2%.

[0053] According to the proportion of the above-mentioned pipe jacking thixotropic mud, the preparation is as follows.

[0054] S1. Divide the water into four parts, the first part 86.3% is added to the mixing tank, the second part 0.6% is used to dissolve the alkaline inorganic treatment agent, the third part 0.3% is used to dissolve the flocculant, and the fourth part 3% is used to prepare Mixed slurry of viscosifier and fluid loss control agent.

[0055] S2. Slowly add sodium bentonite into the mixing tank, then add the first part of water in S1 into the mixing tank, and stir evenly.

[0056] S3. Use the second part of water in S1 to melt the alkaline inorganic treatment agent to obtain a sod...

Embodiment 2

[0061] A kind of pipe jacking thixotropic mud, made of the following components by weight: 8% sodium bentonite, 0.3% sodium carbonate, 0.2% polymer coagulant, MMH positive gel and / or xanthan gum 0.6 %, pregelatinized starch 1.5%, modified graphite and / or glass pellets 2%, water 87.4%.

[0062] According to the proportion of the above-mentioned pipe jacking thixotropic mud, the preparation is as follows.

[0063] S1. Divide the water into four parts, the first part 82.3% is added to the mixing tank, the second part 0.9% is used to dissolve the alkaline inorganic treatment agent, the third part 0.6% is used to dissolve the flocculant, and the fourth part 3.6% is used to prepare Mixed slurry of viscosifier and fluid loss control agent.

[0064] S2. Slowly add sodium bentonite into the mixing tank, then add the first part of water in S1 into the mixing tank, and stir evenly.

[0065] S3. Use the second part of water in S1 to melt the alkaline inorganic treatment agent to obtain ...

Embodiment 3

[0070] A kind of pipe jacking thixotropic mud, is made of the following components by weight: 9.3% sodium bentonite, 0.42% sodium carbonate, 0.24% polymer coagulant, MMH positive gel and / or xanthan gum 0.61 %, pregelatinized starch 2%, modified graphite and / or glass pellets 3%, water 84.8%.

[0071] According to the proportion of the above-mentioned pipe jacking thixotropic mud, the preparation is as follows.

[0072] S1. Divide the water into four parts, the first part 79.4% is added to the mixing tank, the second part 1.2% is used to dissolve the alkaline inorganic treatment agent, the third part 0.6% is used to dissolve the flocculant, and the fourth part 3.6% is used to prepare Mixed slurry of viscosifier and fluid loss control agent.

[0073] S2. Slowly add sodium bentonite into the mixing tank, then add the first part of water in S1 into the mixing tank, and stir evenly.

[0074]S3. Use the second part of water in S1 to melt the alkaline inorganic treatment agent to ob...

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Abstract

The invention provides pipe jacking thixotropic slurry and a preparation method thereof, belonging to the field of building materials. The pipe jacking thixotropic slurry is prepared from the following components in parts by weight: 6%-10% of sodium bentonite, 0.2%-0.5% of an alkaline inorganic treating agent, 0.1%-0.3% of a flocculating agent, 0.5%-0.8% of a tackifier, 1%-2% of a filtrate reducer, 1%-3% of a lubricating agent and 84%-90% of water, wherein the alkaline inorganic treating agent is sodium carbonate, the flocculating agent is a high-molecular agglutinant, and the filtrate reducer is pregelatinized starch. The invention also provides a preparation method of the pipe jacking thixotropic slurry. The thixotropic slurry has good consistency, can form a high-quality slurry sleeve and has a certain supporting effect; and the components in the formula of the thixotropic slurry have a synergistic effect, so the stability and safety of existing thixotropic slurry are improved, and soil collapse and pavement subsidence are avoided.

Description

technical field [0001] The invention relates to the technical field of bentonite thixotropic mud, in particular to a pipe jacking thixotropic mud and a preparation method thereof. Background technique [0002] With the process of national modernization, the pace of urban construction is getting faster and faster. Various municipal pipelines are criss-crossing underground and densely layered. There are more and more municipal buildings on the ground. Excavation construction will deteriorate the quality of the roads and damage the environment. It brings a lot of inconvenience to people's life and work, and the construction cost is getting higher and higher. The application of pipe jacking construction technology has solved the contradiction between existing municipal facilities and construction. [0003] Bentonite thixotropic mud needs to be injected during the pipe jacking process. On the one hand, the thixotropic mud can convert the dry friction between the pipe wall and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/14C09K8/16C09K8/20C09K17/40C09K103/00
CPCC09K8/14C09K8/16C09K8/206C09K17/40C09K2208/34C09K2103/00
Inventor 卜鹤季文君李成龙牛小犇宁丽艳吴奇飞
Owner CHINA CONSTR FIRST BUILDING GRP CORP LTD
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