an earth pressure balance method

Abstract

The invention discloses a soil pressure balancing method. The problems that in the jacking pipe operation process, over-excavation and under-excavation may happen when a face earthwork is excavated, a surrounding soil body is likely to be disturbed, the road on the ground is damaged, a building sinks and deforms, and an underground pipeline is broken are solved. According to the technical scheme, the soil pressure balancing method is characterized by comprising the following steps that firstly, construction preparation is made; measuring and setting-out are conducted; thirdly, equipment is arranged in a work well; fourthly, wall penetrating hole treatment is conducted; fifthly, jacking pipe equipment is installed; sixthly, a jacking pipe penetrates out of a wall penetrating hole; seventhly, pipeline installation is conducted; eighthly, jacking is conducted; ninthly, the jacking pipe enters the hole; tenthly, a tool pipe is taken out; and eleventhly, hole treatment is conducted. By means of the soil pressure balancing method, over-excavation and under-excavation generated when the face earthwork is excavated are reduced, the disturbance to the surrounding soil body is reduced, the damage to the road on the ground is reduced, and meanwhile the phenomena that the building sinks and deforms and the underground pipeline is broken are reduced.

Description

technical field [0001] The invention relates to a construction method for pipe jacking in underground engineering, in particular to an earth pressure balance method. Background technique [0002] With the process of national modernization, the pace of urban construction is getting faster and faster. Various municipal pipelines are criss-crossed and densely distributed underground. There are more and more municipal buildings on the ground. Excavation construction will deteriorate the quality of roads and damage the environment. It brings a lot of inconvenience to people's life and work, and the construction cost is getting higher and higher. To solve the contradiction between municipal facilities and construction, a new construction technology - trenchless technology was born. [0003] Pipe jacking construction is a non-excavation construction method, and it is a pipeline burying construction technology that does not excavate or excavates less. Pipe jacking construction is t...

AI Technical Summary

Problems solved by technology

[0005] However, in the actual pipe jacking operation, there will be over-excavation and under-excavation of the soil on the excavation surface, which not only removes the part of the soil that is jacked into the pipe, so it is easy to cause interference to the surrounding soil and damage the ground to the road. , problems such as building subsidence, deformation, and damage to lower pipelines, there is still room for improvement

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