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Construction method of tunnel to cross airport runway by shield method

A technology for airport runways and shield tunnels, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as no detailed description of later settlement, achieve the effects of ensuring normal operation, optimizing waterproof design, and optimizing lining structure

Active Publication Date: 2013-04-03
SHANGHAI TUNNEL ENG CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

However, there is no detailed description of the formulation of the construction method for the shield tunneling method to cross the airport runway and the implementation of various parameters during the construction process, and no detailed description of how to control the later settlement

Method used

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specific Embodiment

[0034] A rail transit section shield crosses the airport runway. The project uses two φ6.34m earth pressure balance shields for construction. The shell length of the shield machine is 7.89m, and the outer dimension of the tunnel is φ6.2m. The length is 1826.4m, and the length of the downlink tunnel is 1825.2m. The two shield machines go out from the starting shaft on the east side of the airport, then cross the operating apron and runway, then cross the planned new runway, apron and terminal building, and finally reach the east terminal shaft of the airport east station.

[0035] The airport has a large transportation throughput, and the tunnel needs to be constructed in accordance with the non-stop requirements, and the taxiways and runways in the airport are restricted areas, which brings many difficulties to the construction.

[0036] The tunnel in this section is about 541m away from the operating airport, of which the shield crosses the apron for about 75m and the runway ...

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Abstract

The invention relates to a construction method of a tunnel to cross an airport runway by a shield method, which comprises the following steps of: 1, design optimization, which comprises optimizing an axis line of the tunnel, unifying sedimentation control standards, designing special lining rings and optimizing lining waterproof performance; 2, optimization of shield equipment, which comprises optimizing synchronous grouting slurry and grouting equipment, optimizing synchronous grouting holes, and tapping a shield machine; 3, construction monitoring, which comprises measuring water level manually, automatically monitoring surface sedimentation of the runway and automatically monitoring sedimentation of shoulder of a road; 4, crossing airport runway by a shield, which comprises dividing phase control regions, setting an earth pressure, controlling advancing volume of excavated earth, improving soil body, controlling advance rate, grouting synchronously, assembling tunnel lining duct pieces, and grouting secondarily after shield crossing. The method not only realizes construction of crossing the airport runway by the shield method, but also guarantees the normal operation of the airport.

Description

technical field [0001] The invention relates to a construction method of a shield tunneling machine, in particular to a construction method for a shield tunnel crossing an airport runway, and belongs to the field of construction engineering. Background technique [0002] In recent years, my country has carried out large-scale urban municipal engineering construction. Due to the requirements of urban land use and three-dimensional urban traffic, more and more projects have been developed underground. In particular, several important cities across the country have launched underground railways. Construction engineering, shield tunneling method has been widely used. From the perspective of the application of shield tunneling in engineering, my country has completed the construction of multiple complex working conditions with the application of earth pressure balance shields, double-circle shields, and large mud-water shields, and has obtained many successful experiences and tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D11/10
Inventor 李刚张曙吴列成王浩吴佳琪
Owner SHANGHAI TUNNEL ENG CO LTD
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