Slurry forretaining wall in use for not excavating drilling

A trenchless, mud technology, applied in the field of mud, can solve the problems of easy leaking and collapsing horizontal hole sections, economic losses of construction units, hole forming and hole reaming difficulties, etc. The effect of poor hole effect and improving drilling efficiency

Inactive Publication Date: 2006-12-06
彭良 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (2) The geological conditions are mostly easy to leak and collapse, and the horizontal hole section is long and irregular, and the frictional resistance is large;
[0009] (4) Most of the crossings are in rivers and water network areas, which are very easy to cause pollution
The biggest problem facing construction in such complex strata is the difficulty of hole forming and reaming, hole collapse, drill sticking and other phenomena often occur, and sometimes even drilling accidents occur, which bring huge economic losses to the construction unit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 6 kg of calcium soil + 0.3 kg of soda ash + 0.3 kg of Na-CMC (medium viscosity sodium carboxymethyl cellulose) + 0.3 kg of wild plant pumice plant glue into 100 kg of water. This formula has been used experimentally in the non-excavation directional drilling pipe laying project of Xiangfu Quyuan, Xiangfu Road, Changsha City. It has been proved that it can play a certain role in protecting the wall in the construction of sandy soil and quicksand formation, and stabilize the hole wall. The role of cooling drill bits and drilling tools.

[0040] The measured performance of its indicators is as follows:

[0041] ①Viscosity: T=28s;

[0042] ②Specific gravity: ρ=1.05g / cm 3 ;

[0043] ③30min water loss: B=16ml;

[0044] ④PH value: PH=9;

[0045] ⑤ Colloid rate: 100%;

[0046] ⑥ Rheological properties (provide measurement values ​​of six-rotational viscometer), see attached table 1:

[0047]

Embodiment 2

[0049] Add 5kg of sodium soil + 0.4kg of Na-CMC (medium viscosity sodium carboxymethyl cellulose) + 1kg of wild plant pumice plant glue into 100kg of water. This formula has a high viscosity, which can play a good role in protecting walls and improving the construction conditions of sandy soil and quicksand formations. The experimental use in the trenchless pipe laying project of Wuyi Road in Changsha City played a vital role in the smooth completion of the project.

[0050] The measured performance of its indicators is as follows:

[0051] ①Viscosity: T=35s;

[0052] ②Specific gravity: ρ=1.035g / cm 3 ;

[0053] ③30min water loss: B=12.5ml (measured value);

[0054] ④PH value: PH=8;

[0055] ⑤ Colloid rate: 100%;

[0056] ⑥Rheological properties (provide the measured values ​​of the six-rotational viscometer) see attached table 2:

[0057]

Embodiment 3

[0059] Add 5kg of calcium soil + 0.25kg of soda ash + 0.25kg of Na-CMC + 0.25kg of wild plant Phoebe plant glue into 100kg of water. The formula has good fluidity and certain viscosity, can play the role of wall protection in the construction of sandy soil and quicksand formation, and can cool the drill bit and drilling tools and reduce the frictional resistance.

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PUM

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Abstract

This invention discloses slurry for protecting the walls during nonexcavating drilling. The slurry comprises: water 100 parts, bentonite 3-10 parts, and slurry-treating agent 0.75-2.5 parts. When the bentonite is calcium soil, the slurry-treating agent comprises sodium carbonate, Na-CMC and biotreating agent, and the proportions are: calcium soil 5-10 parts, sodium carbonate 0.25-0.5 part, Na-CMC 0.25-1 part, and biotreating agent 0.25-1 part. When the bentonite is sodium soil, the slurry-treating agent comprises Na-CMC and biotreating agent, and the proportions are: sodium soil 3-8 parts, Na-CMC 0.3-0.6 part, and biotreating agent 0.6-1.5 parts. The biotreating agent is Marchilus pauhoi gum, and Na-CMC is medium viscosity sodium carboxymethylcellulose. The slurry can avoid the difficulties in drilling and expanding the holes, as well as hole caving and pipe sticking.

Description

technical field [0001] The invention relates to a kind of mud, in particular to a kind of mud used for wall protection in the non-excavation drilling technology. Background technique [0002] Trenchless technology (Trenchless Technology or No-Dig) refers to any technology and method for detecting, inspecting, repairing, replacing and laying various underground utilities (pipes and cables) without digging the surface. Directional (guided) drilling technology is the most widely used and fastest-growing construction technology among trenchless technologies. During construction, according to the designed drilling trajectory (generally arc), use directional drilling technology to construct an approximately horizontal pilot hole first, and remove the pilot hole after the pilot hole drill is exposed on the other side of the obstacle to be crossed The drill bit is replaced with a large-diameter reaming drill bit and the pipeline to be laid with a diameter smaller than the reaming d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/504
Inventor 彭良张可能梁小强杨伟超
Owner 彭良
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