A slurry used for thixotropic mud replacement in pipe jacking construction

Abstract

The invention belongs to the technical field of infrastructure engineering materials, in particular to a slurry used for thixotropic mud replacement in pipe jacking construction, which solves the difficulty of settlement control in the process of pipe jacking construction in the prior art and the existing thixotropic mud filling support Bad problem, the slurry used for thixotropic mud replacement in pipe jacking construction includes the following raw materials: Portland cement 150-250 parts, quartz sand 100-200 parts, modified calcium carbonate 50-100 parts, nano hydrogen 40-80 parts of calcium oxide, 8-10 parts of lithium stearate, 1-3 parts of sodium dimethyldithiocarbamate, 1-3 parts of sodium metasilicate pentahydrate, 2-5 parts of retarder, 300 parts of water ‑500 copies. The slurry prepared by the invention has high strength, good dispersibility, stability and corrosion resistance, which can well regulate the pressure between the pipe joint and the surrounding soil, and fill the gap between the pipe joint structure and the surrounding soil, thereby creating a To effectively fill the supporting role, to avoid formation disturbance and settlement deformation.

Description

A kind of slurry for thixotropic mud replacement in pipe jacking construction technical field The present invention relates to the technical field of infrastructure engineering materials, in particular to a thixotropic mud device for pipe jacking construction. Replaced slurry. Background technique With the development of my country's economy, the pace of urban life is getting faster and faster, and the excavation construction in cities and towns is more and more restricted. The trenchless construction technology has been widely used, and the pipe jacking construction technology is becoming more and more mature. Pipe jacking refers to tunnels or underground pipes An underground construction method used when crossing various obstacles such as railways, roads, rivers or buildings. During pipe jacking construction, During the excavation process of the cutter head of the pipe jacking machine, a component needs to inject thixotropic mud into the gap around the pipe in ti...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of difficult settlement control and poor support of the existing thixotropic mud during pipe jacking construction in the prior art, and propose a slurry for thixotropic mud replacement in pipe jacking construction