Pipe-jacking construction method for pipeline bottom grouting reinforcement

Abstract

The invention discloses a pipe-jacking construction method for pipeline bottom grouting reinforcement. The method comprises the following steps that A, a working well and a receiving well are constructed in the direction of laying a pipeline, and a plurality of horizontal direction holes side by side are formed below the preset position, between the working well and the receiving well, of the pipeline; B, high-pressure grouting is carried out in all the horizontal direction holes to form cement and soil composite structure piles; C, the pipeline is jacked into the preset position through cement balancing pipe-jacking equipment. Horizontal direction drills are utilized for drilling the working well and the receiving well in the opposite directions at the same time, high-pressure jet grouting is carried out in the holes, the method for forming the cement and soil composite structure piles at the bottom of the pipeline is used for reinforcing a foundation, the effect that long-distance deep-embedded pipe-jacking construction is carried out in a sludge bottom layer with the high water content can be smoothly achieved, and the problem that vertical high-pressure jet grouting piles can not be adopted on the road surface can be solved smoothly. Good economic benefits and social benefits are obtained. Particularly, the benefits of the method are outstanding for the situation that deep foundation reinforcing can not be carried out conveniently on the road surface with the traffic jam.

Description

technical field [0001] The invention is used in the technical field of municipal pipeline engineering construction, and in particular relates to a pipe jacking construction method for grouting reinforcement of a pipe jacking portion. Background technique [0002] With the increase of city scale and the improvement of people's awareness of environmental protection, the construction of urban sewage pipe network is in the ascendant. The traditional open cut, slotted and buried pipe method is densely populated in the old city and the roads are narrow. The excavation of the whole road section seriously affects the normal life and work of urban traffic and residents. The pipe jacking construction method better solves the above problems and has been widely used. Pipe jacking construction is a non-excavation construction method, and it is a pipeline burying construction technology with no excavation or less excavation. The pipe jacking method is to use the jacking force generated ...

AI Technical Summary

Problems solved by technology

[0011] In order to solve the above problems, the present invention provides a pipe jacking construction method for reinforcing the bottom of the pipeline by grouting, which can successfully solve the problem of long-distance, deep-buried pipe jacking construction in the bottom layer of high water content mud or that cannot use vertical high-pressure spinning on the road surface. The situation of spraying pile reinforcement

Images