Slurry for hole drilling and wall protection as well as preparation technology and on-site construction technology thereof

A kind of mud and process technology, which is applied in the field of drilling mud and its preparation process for wall protection, and on-site construction technology. It can solve the problems of poor hole forming effect and poor uniformity, and achieve long effective time, increased interlayer distance and reduced cost. Effect

Inactive Publication Date: 2019-01-11
CHINA COMM 2ND NAVIGATIONAL BUREAU 2ND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the bridge foundation engineering, the bored pile foundation has already occupied an important position. With the development of bored piles to large diameter and high depth, the performance of

Method used

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  • Slurry for hole drilling and wall protection as well as preparation technology and on-site construction technology thereof
  • Slurry for hole drilling and wall protection as well as preparation technology and on-site construction technology thereof
  • Slurry for hole drilling and wall protection as well as preparation technology and on-site construction technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-A

[0030] A kind of mud for drilling wall protection, the raw materials adopted include the following components:

[0031] Water, bentonite and external admixtures with a mass ratio of 8:0.8:0.01;

[0032] The external admixture is mixed in the proportion of water: sodium bentonite: polyaluminum chloride and sodium carbonate = 600ml: 60g: 1.4g: 1.54g.

Embodiment 1-B

[0034] A preparation process of mud for drilling wall protection, the following steps are adopted:

[0035] Step 1), take water, soil and external admixture according to the above ratio, stir and mix, and let stand until the raw materials are fully fused and dissolved to obtain the initial body of mud.

Embodiment 2-A

[0037] A kind of mud for drilling wall protection, the raw materials adopted include the following components:

[0038] Water, bentonite and external admixtures with a mass ratio of 12:1.0:0.01;

[0039] The external admixture is mixed in proportions of water: sodium bentonite: polyaluminum chloride and sodium carbonate = 600-800ml: 60-80g: 1.4-1.65g: 1.54g.

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Abstract

The invention discloses slurry for hole drilling and wall protection. The slurry is prepared from the following components: water, bentonite and an admixture according to the mass ratio of (8 to 14) to (0.8 to 1.2) to 0.01, wherein the admixture is prepared by mixing water, sodium bentonite, polyaluminum chloride and sodium carbonate according to the ratio of (600 to 800ml) to (60 to 80g) to (1.4to 1.65g) to 1.54g. The slurry disclosed by the invention has a good wall protection effect; the slurry is uniform and the viscosity ratios of upper and lower layers are the same; the inner part of asand layer is drilled in a rotary manner and hole collapse is not caused; and the slurry has suitable viscosity and does not cause a drill pasting phenomenon.

Description

technical field [0001] The invention relates to the field of wall protection mud. More specifically, the present invention relates to a mud for drilling and wall protection, its preparation process and on-site construction process. Background technique [0002] At present, in the bridge foundation engineering, the bored pile foundation has already occupied an important position. With the development of bored piles to large diameter and high depth, the performance of the mud retaining wall material has an increasing influence on the quality of the borehole. Currently on the market The wall protection mud generally has the problems of poor uniformity and poor hole-forming effect. Contents of the invention [0003] The invention provides a kind of mud for drilling and protecting walls. The mud is uniform, the viscosity ratio of the upper and lower layers is consistent, and the higher the durability, the better the hole-forming effect. [0004] In order to achieve the above ...

Claims

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Application Information

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IPC IPC(8): C09K8/16C09K8/504E21B21/00
CPCC09K8/16C09K8/5045C09K2208/12E21B21/00
Inventor 何运陈时波陈彬刘雨松余定军伍祖地贺业兴罗红李密杨家力龙尚吴为龙
Owner CHINA COMM 2ND NAVIGATIONAL BUREAU 2ND ENG
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