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PHP mud manufacturing method and applications of PHP mud

A production method and mud technology, which are used in earth-moving drilling, wellbore/well components, sheet pile walls, etc., can solve problems such as unclear distribution relationship, and achieve the effects of reducing drill bit resistance, good stability, and reducing wear and tear.

Inactive Publication Date: 2016-01-13
JSTI GRP CO LTD
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  • Abstract
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Problems solved by technology

[0003] The formula for calculating the allowable bearing capacity of bored piles in Article 5.3.3 of the Foundation Code (JTD63-2007) is an empirical formula, and the overall safety can be guaranteed, but the distribution relationship between frictional resistance and pile end reaction is not clear. The reduction in end resistance is much more than the specification

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  • PHP mud manufacturing method and applications of PHP mud

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Embodiment Construction

[0039] The present invention will now be further described in conjunction with specific examples. The following examples are intended to illustrate the present invention but not to further limit the present invention.

[0040] A method for making PHP mud, using bentonite, soda ash, hydroxymethyl cellulose and polyacrylamide as the main materials, wherein bentonite is 7% of the PHP mud volume, soda ash is 0.4% of the PHP mud volume, and hydroxymethyl fiber It is 0.08% of PHP mud volume, and polyacrylamide is 0.0032% of PHP mud volume;

[0041] The PHP mud is prepared by the following steps: select bentonite mud powder with colloid ratio ≥96% and sand content of 0-0.3%, and hydrolyze polyacrylamide at the same time: soak 100 parts of polyacrylamide in 6000 parts of water for 1 day At the same time, add caustic soda to stir in the mixing drum to promote the dissolution. The caustic soda is 10% of the hydrolyzed polyacrylamide. Leave it for 3 days to effectively disperse the hydrolyzed...

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Abstract

The invention discloses a PHP mud manufacturing method and applications of PHP mud, and belongs to the reconstruction technology field of cast-in-situ bored pile manufacturing method and applications thereof. According to the PHP mud manufacturing method, bentonite, sodium carbonate, hydroxymethyl cellulose, and polyacrylamide are taken as main raw materials, barite powder is taken as an additive. The PHP mud manufacturing method comprises following steps: a, material preparation; b, stirring of a base slurry; c, material adjusting; and d, additive adding. The invention also discloses applications of PHP mud, and PHP mud can be applied to construction of cast-in-situ bored piles. Beneficial effects are that: thixotropy is excellent; specific gravity is low, and solid phase content is low; viscosity is high; mud cover is thin; water loss is low; dispersion is not caused; and environmental protection performance is excellent.

Description

Technical field [0001] The invention is a method for preparing PHP mud and its application, and belongs to a method for preparing bored pile mud and its application transformation technology. Background technique [0002] Bored piles in China were born by "self-reliance" in 1963. After the Ministry of Communications held the "Drilled Pile Technology Appraisal Meeting" in Henan in 1965, it was quickly promoted and developed nationwide. Over the past 50 years, the level of bored pile construction technology has been continuously improved. It is 120m long and the pile diameter has reached Φ560cm. Various types of bridges have successfully built a large number of bored pile foundations under various complex geological and hydrological conditions on the Yellow River, the Pearl River, the Yangtze River and coastal harbors. Practice has proved that mud is the blood circulation system of boreholes, and the quality of mud technology is an extremely important factor affecting the quality ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/28E21B21/00E02D5/38
Inventor 陈光林
Owner JSTI GRP CO LTD
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