Method for slurry-water balance type pipe-pulling construction of underground pipeline

Abstract

The invention provides a method for the slurry-water balance type pipe-pulling construction of an underground pipeline, which relates to the technical field of underground construction and aims at improving the applicability to the construction site and the construction efficiency. The method comprises the following steps: constructing a starting well and a receiving well at both ends of a pipeline design axis; then installing a horizontal pull device in the receiving well; laying a plurality of strings of coaxial bracing cables between the two working wells by using a horizontal directional drilling technology, wherein one end of each bracing cable is locked by the horizontal pull device in the receiving well, and the other end of each bracing cable is axisymmetrically fixed on the front end of an excavator head; and applying pull to the groups of bracing cables by the horizontal pull device in the receiving well when the excavator head excavates so that all pipe joints are driven into an excavating stratum by the excavator head. The method is suitable for pipelines which have various cross-sectional dimensions and are in the steel reinforced concrete structure or the steel structure.

Description

technical field [0001] The invention relates to the technology of underground construction, in particular to the technology of a mud-water balanced pipe-drawing construction method for underground pipelines. Background technique [0002] As a trenchless technology, the pipe jacking method has the advantage of little disturbance to the ground, so it is widely used in the current underground pipeline construction. But this construction method has the following defects: 1) due to the space that the jacking device occupies the departure shaft in the pipe jacking method construction is bigger, and also will have the space that the jack group is set, so the length of the departure shaft is all longer, and therefore It makes it difficult to set up the starting shaft (pipe jacking working well) due to site conditions and surrounding buildings (structures). Length and "rear" reinforcement space requirements, or need to invest a large amount of measures to take measures to transform ...

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Problems solved by technology

But this construction method has the following defects: 1) due to the space that the jacking device occupies the departure shaft in the pipe jacking method construction is bigger, and also will have the space that the jack group is set, so the length of the departure shaft is all longer, and therefore It makes the starting shaft (pipe jacking working well) difficult to set up due to site conditions and surrounding buildings (structures). Length and "rear" reinforcement space requirements, or need to invest a large amount of measures to take measures to transform or protect adjacent structures; During the excavation process in the area, the machine head is prone to deviate from the travel axis. During the excavation process of the excavation machine head, it is often necessary to correct the deviation of the excavation machine head, and the excavation efficiency is low.

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