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A shield tunneling construction method for cross-river tunnel

A construction method, tunnel shielding technology, applied in tunnels, earthwork drilling, mining equipment, etc., can solve rare problems, save construction costs and time limit, ensure safety and stability, and improve safety

Active Publication Date: 2020-06-09
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, there are some researches related to the preparation work of shield tunneling, but the above-mentioned technologies often only propose improvements for a very small and specific problem in the shield tunneling work, and from the perspective of the overall shield tunneling work There are few studies on the optimization of the overall process of each work in the launch preparation. Therefore, in order to ensure the safety and economy of the construction, a set of Reasonable construction method of process arrangement is particularly important

Method used

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  • A shield tunneling construction method for cross-river tunnel

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0018] The shield tunnel construction method of the present invention, the specific construction steps are as follows:

[0019] (1) First, carry out the ground equipment installation steps, which include: box-type substation installation, gantry crane installation, air compressor installation, muddy water treatment system installation, mortar mixing device installation, cooling pool installation, fan installation, and grouting equipment installation.

[0020] Among them, the gantry crane is a 10-ton gantry crane. The specific installation steps of the gantry crane are: (a) set the track sample line according to the gauge of the gantry crane, and pour a concrete foundation with a width of 1200 mm and a height of 300 mm; Welded reinforcement with pre-embedded bolts is placed on the concrete foundation, and th...

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Abstract

The invention discLoses a starting construction method for a river-crossing tunneL shieLd. The construction method mainLy comprises the steps of instaLLation of ground equipment, instaLLation of weLLwaLL equipment, instaLLation of weLL bottom equipment and instaLLation of a shieLd tunneLing machine. By arranging the steps and optimizing the process, the starting construction method for the shieLdis safe and efficient; with the method, the safety and stabiLity of foLLowing construction can be guaranteed as a whoLe, and construction costs and the construction period can be saved.

Description

technical field [0001] The invention relates to a tunnel shield construction method, in particular to a river-crossing tunnel shield initiation construction method. Background technique [0002] River crossing tunnels have been widely used in river crossing projects in recent years because they do not restrict shipping, are not affected by meteorological conditions, have good seismic performance, and have high strategic significance. The mud-water balance shield method is one of the main construction methods for cross-river tunnels. For example, the Shanghai Shangzhong Road Tunnel Project, the Shanghai Yangtze River Tunnel Project, the Wuhan Yangtze River Tunnel Project, and the Nanjing Yangtze River Tunnel Project all use mud-water balance shield tunneling. When carrying out mud-water balance shield tunneling, if the preparation work before the start of the shield tunneling is insufficient, or the preparation work is not arranged according to a reasonable process, it will d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06
CPCE21D9/06
Inventor 孙振川张迅郭海坡张兵李栋韩伟锋李凤远周建军陈馈郭璐陈桥王凯王发民彭正勇沈峰周东勇
Owner CHINA RAILWAY TUNNEL GROUP CO LTD