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Tunnel entering and exiting construction method for slurry balance shield

A mud-water balance and construction method technology, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc., to achieve the effects of reducing the risk of water penetration, ensuring safety, and improving the efficiency and effect of sealing and waterproofing

Pending Publication Date: 2021-11-09
SHANGHAI MECHANIZED CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a mud-water balance shield tunnel entry and exit construction method to solve the problem of sealing and waterproofing when the mud-water balance shield tunnel enters and exits the external shield tail pipeline, and to ensure the entry and exit of the mud-water balance shield hole security

Method used

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  • Tunnel entering and exiting construction method for slurry balance shield
  • Tunnel entering and exiting construction method for slurry balance shield
  • Tunnel entering and exiting construction method for slurry balance shield

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Embodiment 1: A construction method for mud-water balance shield tunneling

[0051] Such as Figure 1A-Figure 1D As shown, a mud-water balance shield tunneling construction method of the present embodiment includes the following steps:

[0052] S1, set the first reinforcement zone 1 outside the exit direction of the launch shaft 100, the length of the first reinforcement zone 1 along the tunnel axis is greater than the length of the shield machine 200; Frame 101, shield machine 200, reaction force frame 102, and open-shaped steel negative ring 108. The shield machine 200 is set on the launch frame 101, and the reaction force frame 102 can touch the shield tail of the shield machine 200 through the open-shaped steel negative ring 108. ;

[0053] S2, preset the first steel tunnel door 2 on the first side wall 104 of the originating shaft 100, chisel the first underground wall 105 along the first steel tunnel door 2 to form a hole; set the first steel tunnel door 2 inside...

Embodiment 2

[0067] Embodiment 2: A mud-water balance shield tunneling construction method

[0068] Such as Figures 6A-6D As shown, the present embodiment provides a mud-water balance shield tunneling construction method, comprising the following steps:

[0069] SS1, such as Figure 6A , the second reinforcement zone 4 is set outside the hole-entry direction of the receiving shaft 300, the receiving frame 301 is arranged in the receiving shaft 300, and the second steel door 5 is reserved at the second side wall 302 of the receiving shaft 300, the second The second steel wire brush 51 is arranged in the second steel portal 5;

[0070] SS2, the shield machine 200 advances towards the receiving shaft 300 in the second reinforcement area 4, such as Figure 6B , the cutter head 201 is excavated and the profiling knife 202 provided on the cutter head 201 over-excavates the second reinforcement zone 4; 200 Stop advancing and reduce the pressure in the front chamber;

[0071] In this step, t...

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Abstract

The invention belongs to the technical field of shield construction, and discloses a tunnel entering and exiting construction method for a slurry balance shield. A tunnel exiting method comprises the steps of: firstly, forming a first reinforcing region outside an origin well in the tunnel exiting direction, and pre-installing a first steel tunnel portal on the side wall of the origin well; and in the propelling process of a shield tunneling machine, enabling a profiling cutter to carry out over-excavation in the first reinforcing region, after the profiling cutter completely enters the first reinforcing region, filling and fixing a sponge strip through double-fast cement, and carrying out sealing welding on a tunnel exiting ring and the first steel tunnel portal. A tunnel entering method comprises the steps of: firstly, forming a second reinforcing region outside a receiving well, reserving a second steel tunnel portal at the position of the side wall, enabling the profiling cutter to carry out over-excavation in the propelling process of the shield tunneling machine in the second reinforcing region, continuously filling, and carrying out water stopping and ring sealing grouting on a tunnel entering ring exiting from a shield tail; and carrying out sealing and welding on the tunnel entering ring and the second steel tunnel portal until the shield tunneling machine completely enters the receiving well. According to the invention, the tunnel portal can be rapidly sealed, and the slurry balance shield is guaranteed to enter and exit the tunnel safely, so that the tunnel rapidly enters the long-term safe state.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a mud-water balance shield tunnel entry and exit construction method. Background technique [0002] With the maturity of underground space development technology, shield machines are widely used in underground tunnel construction. A major branch of the shield machine is the mud-water balance shield machine, which refers to injecting muddy water into the sealed compartment of the shield excavation surface, and through the muddy water pressurization and external pressure balance, to ensure the excavation surface soil Stablize. [0003] Shield tunnel entry refers to the process of shield tunneling from the working area to the receiving well, and shield tunnel exit refers to the process of shield tunneling from the originating shaft to the working section. The excavated soil enters the mud chamber at the front of the shield tunnel when the shield tunnel is advanced. , stir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/087E21D9/14E21D11/10
CPCE21D9/14E21D9/0635E21D9/087E21D9/0873E21D11/10Y02E10/20
Inventor 孙林向阳生方嘉华顾华金王恺华罗鑫黄炜焱张毅赵培
Owner SHANGHAI MECHANIZED CONSTR GRP