A construction method for a shield machine to pass through a ground connection wall and pass through a station

Abstract

The invention discloses a construction method for a shield machine to pass through a ground connection wall and pass through a station. The method is as follows: step 1, when the shield machine is driven to 10m before the first ground connection wall of the station needs to be crossed, stop and maintain pressure; step 2, The first ground connection wall construction; step 3, the shield machine passes through the first ground connection wall; step 4, the shield machine tunnels through the station, and assembles the segments through the joints; step 5, the second ground connection wall construction; steps Sixth, the shield machine passes through the second ground connection wall; step seven, the shield machine continues to excavate until the construction of the shield section is completed; step eight, the shield machine passes through the main structure of the station for construction. Beneficial effects: convenient operation, short construction period, safe and economical, can solve the problem that the station is affected by land acquisition and demolition and does not have construction conditions, and cannot provide starting and receiving conditions for the shield machine; the shield section of the present invention can be penetrated first, and then constructed The station has strong construction practicability and can be widely used in the construction of urban subway shield tunnels.

Description

technical field [0001] The invention relates to a construction method for a shield tunneling machine to cross a station, in particular to a construction method for a shield tunneling machine to cross a ground connection wall and pass a station. Background technique [0002] At present, in the construction of urban subway projects, due to the large-scale demolition of urban villages and shanty towns involving the conversion of collective land to agricultural use, the comparison and selection of resettlement housing schemes, rush construction, and illegal construction, the demolition workload is heavy and the demolition is difficult. 1. Failure to demolish, relocate and hand over the land on time, resulting in the failure to start construction of stations and sections according to the planned construction period, or even seriously lagging behind, affecting the goal of connecting nodes on the whole line. The construction method of "tunnel first, then station" came into being. T...

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Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of poor waterproof effect and poor impermeability of the ground connection wall after forced construction in the construction method of "tunnel first, then station", and poor enclosure effect in the water-rich sand layer, which is very serious. Water seepage and sand seepage are prone to occur, and there are relatively large safety hazards. Therefore, a shield machine is provided for a construction method that passes through the ground connection wall and passes through the station.

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