Device for exchanging tail brush during shield tunneling, and construction method of device

Abstract

The invention relates to a device for exchanging a tail brush during shield tunneling, and a construction method of the device. The device comprises a gap adjustment duct piece ring, a separation duct piece ring, a supporting structure and a jack; the gap adjustment duct piece ring and the separation duct piece ring are spliced with each other, and the spliced gaps of the gap adjustment duct piece ring and the separation duct piece ring are positioned behind a second shield tail brush; water-stopping chemical slurry is injected on the back of the gap adjustment duct piece ring from a suspension hole A formed on the back of the gap adjustment duct piece ring; the supporting structure is positioned in the separation duct piece ring; and the backs of the gap adjustment duct piece ring and the separation duct piece ring are connected with the jack through steel wire ropes. The method comprises the following steps of: fixing the gap adjustment duct piece ring in the rear of the shield tailbrush, pulling and separating the separation duct piece ring overlapped with the shield tail brush by the jack on the shield machine, exchanging the shield tail brush and resetting the separation dust piece through the jack. The device for exchanging the tail brush has a simple stricture and few auxiliary measures, the construction method is simple and easy and safe and reliable, and the cost is low. The invention can be widely applied to shield construction, particularly the replacement of the shield tail brush under the condition of a low water pressure.

Description

technical field [0001] The invention relates to a maintenance device and a maintenance method for shield tunneling equipment, in particular to a construction method for replacing a sealing wire brush at the tail of a shield tunneling machine during tunnel construction, and belongs to the field of tunnel construction engineering. Background technique [0002] With the development of urban construction in our country, there are more and more underground rail transit projects, and the shield tunneling distance is getting longer and longer. , synchronous grouting pressure control, synchronous grease injection control, shield tail gap and other quality control or improper operation factors may cause the grouting slurry to enter the wall between the two shield tail brushes of the shield, and cause the tail brush to break after solidification. Abnormal wear, greatly shortened life, resulting in failure of shield tail seal. In order to ensure the smooth progress and safety of the s...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device and construction method for replacing the tail brush in the process of shield tunneling, to solve the need to set a specific tail brush front segment in the existing tail brush replacement process. The front segment is removed, and the front segment needs to be reassembled after the replacement. The construction process is complicated and the construction cost is high.

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