Novel lubricant and resistance-reducing slurry for pipe jacking construction in desert areas and preparation method of slurry

Abstract

The invention discloses novel lubricant and resistance-reducing slurry for pipe jacking construction in desert areas. The slurry comprises machine head synchronous grouting slurry and follow-up supplement slurry along a line, wherein the machine head synchronous grouting slurry is prepared from the components in parts by weight as follow: 130-150 parts of clay, 1-1.5 parts of carboxymethyl cellulose, 0.25-0.3 parts of sodium hydroxide, 2.5-3.5 parts of a lubricant anti-collapse agent and 1,000 parts of water; the follow-up supplement slurry along the line is prepared from components in parts by weight as follows: 4.5-5 parts of hydrolysis polyacrylamide, 2.5-3.5 parts of a lubrication anti-collapse agent and 1,000 parts of water. A slurry grouting system for pipe jacking construction comprises the synchronous grouting slurry and the follow-up supplement slurry and adopts a synchronous slurry grouting process and a follow-up slurry grouting process; the synchronous grouting slurry mainly has a casing formation and wall protection function on the basis of lubrication and resistance reduction, the follow-up supplement slurry mainly has lubrication and resistance reduction properties, and accordingly, the lubricant and resistance-reducing slurry system performs the lubrication and wall-protection functions best.

Description

technical field [0001] The invention relates to the technical field of pipe jacking construction in desert areas, in particular to a novel lubricating and drag-reducing slurry suitable for pipe jacking construction in desert areas and a preparation method thereof. Background technique [0002] The stability of the stratum in desert areas is poor, the sandy soil is loose, flowing, non-viscous, and has high frictional resistance. The long-distance and large-diameter pipe jacking construction takes a long time and is difficult. The performance and maintenance requirements of the retaining wall and drag-reducing slurry are high, and the pressure loss of the long-distance transmission of slurry Large, the grout effect is not ideal, it is very easy to cause the ground to collapse and bury the pipe during pipe jacking construction, and the pipe jacking resistance increases sharply, resulting in pipe jacking failure. According to many construction cases and technical data of pipe ja...

AI Technical Summary

Problems solved by technology

The price of this lubricating drag reducing fluid is very high, and its practicability is not high

[0004] At present, my country's steel pipe jacking technology is in a leading position in the world, and concrete pipe jacking technology has also developed to a higher level. There is no unified index for mud preparation at this stage, which is random and unstable. Domestic pipe jacking companies are basically I am exploring on my own, but mainly focus on the grouting process to meet the technical requirements. When encountering special formations, such as sand and pebble layers, it is necessary to inject colloid that acts as a consolidation first to stabilize the hole wall, and then inject mud to reduce frictional resistance.