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A multi-mode shield machine

A shield machine and multi-mode technology, applied in mining equipment, tunnels, earthwork drilling and mining, etc., can solve the problems of increased construction period and increased project investment, and achieve strong adaptability

Active Publication Date: 2021-02-09
GUANGZHOU RAIL TRANSIT CONSTR SUPERVISION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to dig a vertical shaft on the ground to provide a working surface for the mining method construction, and the construction method process is changed, resulting in an increase in the construction period; at the same time, this method will increase the project investment

Method used

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  • A multi-mode shield machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022]This embodiment provides a multi-mode shield machine, including a shield shell 1, a belt conveyor 2, a screw conveyor 3, a mud circulation system and a cutter head 4; the belt conveyor 2 and the screw conveyor 3 are arranged in the In the shield case 1, the cutter head 4 is provided at the front end of the shield case 1, and a sealed compartment 5 is provided between the cutter head 4 and the front end of the shield case 1; The mud inlet and the mud outlet 6, the mud circulation system includes an external mud source 7, a mud inlet pipe 8 and a mud outlet pipe 9; one end of the mud inlet pipe 8 is connected to the mud inlet through the mud The other end of the sealed cabin 5 is connected to an external mud source 7; one end of the slurry outlet pipe 9 is connected to the sealed cabin 5 through the slurry outlet 6 and the other end is connected to an external mud source 7; The slag inlet of the screw conveyor 3 is connected to the sealed cabin and closed by an openable slag inl...

Embodiment 2

[0030]This embodiment provides a method for using the multi-mode shield machine described in Embodiment 1, specifically:

[0031]When the ground is soft ground or uneven ground, and the ground environment is relatively simple, the earth pressure mode is adopted: the soil pressure in the sealed cabin is used to balance the water and soil pressure on the face of the tunnel, and the muck cut by the tool enters the seal Inside the cabin; the slag inlet gate of the screw conveyor is opened, and the slag is transported from the slag inlet of the screw conveyor to the slag outlet of the screw conveyor located inside the shield shell, and falls on the belt conveyor through the slag outlet. It is transported to the outside of the shield shell through a belt conveyor; at this time, the mud circulation system stops working. The cutting tool can be matched with a cutting knife and a hob according to the ground conditions, and the cutter head adopts a low speed mode (0-2.24r / min) for excavation.

[00...

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Abstract

The invention discloses a multi-mode shield machine, comprising a shield shell, a belt conveyor, a screw conveyor, a mud circulation system and a cutter head; the belt conveyor and the screw conveyor are arranged in the shield casing, and the cutter head is arranged in the shield casing There is a sealed cabin between the cutter head and the front end of the shield shell; the inside of the shield shell is provided with a mud inlet and a mud outlet connected to the sealed cabin. The mud circulation system includes an external mud source, a slurry inlet pipe and a mud outlet. Slurry pipeline; one end of the slurry inlet pipeline is connected to the sealed cabin through the mud slurry inlet, and the other end is connected to the external mud source; one end of the slurry outlet pipeline is connected to the sealed cabin through the mud slurry outlet, and the other end is connected to the external mud source; The slag inlet of the conveyor is connected to the sealed cabin and closed by the openable slag inlet gate, and the slag outlet corresponds to the conveying channel of the belt conveyor. The invention can switch different shield tunneling modes according to complex and changeable formation conditions.

Description

Technical field[0001]The invention relates to the technical field of shield tunneling, in particular to a multi-mode shield tunneling machine.Background technique[0002]In the stratum developed by granite, the stratum conditions that the interval tunnels pass through are complex and changeable: some sections of tunnels pass through soft soil layers, such as sandy clay layers, granite residual layers, etc.; some sections of tunnels pass through soft and hard uneven stratum, such as tunnel excavation The upper part of the section is the granite residual layer, the lower part is the slightly weathered granite layer, or the passing granite residual layer is mixed with the slightly weathered granite spherical weathered body, etc.; some sections of the whole section cross the slightly weathered granite layer, and the strength of the slightly weathered granite is universal Above 100mPa. At the same time, tunnel construction may also face complex surrounding environments, such as crossing bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/087E21D9/12E21D9/13
CPCE21D9/087E21D9/12E21D9/124E21D9/13
Inventor 竺维彬郭永顺钟长平黄威然王俊彬祝思然卓普周王杜鹃肖瑞传陈和凌波
Owner GUANGZHOU RAIL TRANSIT CONSTR SUPERVISION CO LTD
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