Shield receiving method

Abstract

The invention provides a shield receiving method, and relates to the technical field of shield construction. The shield receiving method comprises the following steps of determining a propulsion route; conducting a first reinforcing step, specifically, grouting and reinforcing a construction section from a shield receiving end of a cross transfer station to a second side underground diaphragm wall of the existing operation line of the station by using a pipe shed grouting method and a WSS construction method; conducting a first breaking step, specifically, breaking the underground diaphragm wall of the shield receiving end of the cross transfer station, so that interlayer soil between the underground diaphragm wall of the shield receiving end of the cross transfer station and the second side underground diaphragm wall is exposed; constructing a shield receiving box; carrying out underground excavation and supporting, excavating interlayer soil through a CRD construction method, and forming an excavation channel; conducting a second reinforcing step, wherein the two sides of the second side underground diaphragm wall are subjected to grouting reinforcement through the WSS construction method to form reinforcing layers; conducting a second breaking step, specifically, breaking a second side underground diaphragm wall steel bar and a cross-shaped steel plate; conducting a backfilling step, specifically, backfilling and closing the excavated tunnel; and conducting a receiving step, specifically, finishing shield receiving when a shield machine arrives the shield position. The method has the beneficial effects of reducing the damage rate of the cutter and being safer in construction.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a shield receiving method. Background technique [0002] The shield method is a fully mechanized construction method in the underground excavation method. It propels the shield machine in the ground, and supports the surrounding rock through the shield casing and segments to prevent collapse into the tunnel. At the same time, a cutting device is used to excavate the soil in front of the excavation face, transported out of the hole by excavation machinery, jacked in the rear by a jack, and assembled with prefabricated concrete segments to form a mechanized construction method of the tunnel structure. [0003] In the prior art, when the shield passes through the ordinary steel bar ground connection wall, it may cause damage to the cutter and the stagnation of the cutter head, causing the shield to stagnate. If this happens below the existing operation line, it is very saf...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the shield passes through the ordinary steel bar ground connection wall, it may cause damage to the cutter and the stagnation of the cutter head, causing the shield to stagnate. If this happens below the existing operation line, it is very safe to open the warehouse to clean up or change the cutter. Hidden danger, easy to cause bodily injury to staff

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