Earth pressure balance shield structure with gate anti-spewing structure and shield method

An earth pressure balance shield and anti-surge technology, which is applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of slow construction progress, scattered muck, and increased construction costs, and achieve less muck gushing. , to solve the effect of direct and large promotion prospects

Pending Publication Date: 2019-10-18
POWERCHINA RAILWAY CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the shield gushing phenomenon occurs, the shield driver will always perform frequent operations of opening or closing the gate. It is difficult to control the opening distance of the gate. When the gate is opened wide, it will spew, and when it is opened small, no slag will come out, causing the slag to scatter into the tunnel
It takes a long time to clean up the muck that has fallen into the tunnel, and it often gushes out to cause the

Method used

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  • Earth pressure balance shield structure with gate anti-spewing structure and shield method
  • Earth pressure balance shield structure with gate anti-spewing structure and shield method
  • Earth pressure balance shield structure with gate anti-spewing structure and shield method

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Such as figure 1 and figure 2 As shown, an earth pressure balance shield structure with a gate gushing-proof structure includes a cutter head 1, a front shield 3, a main drive 4, a middle shield 5, a shield tail 7, a propulsion cylinder 6 and a screw conveyor 10;

[0054] The propulsion cylinder 6 is placed on the front end surface of the segment 9, the soil cabin 2 is arranged behind the cutter head 1, and the main drive 4 is arranged behind the soil cabin 2; , the screw conveyor 10 is installed obliquely, and the slag outlet of the screw conveyor 10 is provided with an upper gate mechanism 11 and a lower gate mechanism 12; The cylinder is transported out; the muck falls on the belt 13 of the belt conveyor system through the upper gate mechanism 11 and the lower gate mechanism 12;

[0055] The upper gate mechanism 11 is provided with an upper gate plate 32 and an upper slag outlet. The upper slag outlet includes a first slag outlet 18 and an anti-spray slag outlet 2...

Embodiment 2

[0073] This embodiment is similar to Embodiment 1, the difference is that, for the upper gate mechanism 11 and / or the lower gate mechanism 12, it is improved as follows:

[0074] Sealing 25 is installed around the upper fixed plate 19 bottoms. The sealing device 25 can avoid the slag from falling and prevent the slag from leaking. In order to make the sliding of the upper gate plate 32 smoother and more stable, the number of the first oil cylinders 15 is two, and the two first oil cylinders 15 are arranged on both sides of the upper fixed plate 19 respectively. The first oil cylinder 15 on the side is balanced, and the stability and reliability are enhanced (the number of the second oil cylinder 37 is two, and the two second oil cylinders 37 are respectively arranged on both sides of the upper fixing plate 19).

[0075] In order to ensure the lubrication between the upper gate plate 32 and the second wear plate 26, as Figure 4 As shown, grooves are slotted on the second wea...

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Abstract

The invention discloses an earth pressure balance shield structure with a gate anti-spewing structure and a shield method. The structure comprises a cutterhead, a front shield, a main drive, a middleshield, a shield tail, a thrust cylinder and a spiral conveyor, wherein the thrust cylinder is propped against the front end surface of a tube piece; a soil cabin is arranged at the back of the cutterhead; the main drive is arranged at the back of the soil cabin; an opening is formed in the lower part of the soil cabin; a rotating shaft of the spiral conveyor is arranged at the lower part of the soil cabin; the spiral conveyor is arranged in an inclined manner; a slag falling opening of the spiral conveyor is provided with an upper gate mechanism and a lower gate mechanism; residue soil fallsonto a belt of a belt machine system through the upper gate mechanism and the lower gate mechanism; the upper gate mechanism is provided with an upper gate plate, a first slag falling opening and an anti-spewing slag falling opening; and the lower gate mechanism is provided with a lower gate plate and a second slag falling opening. The dilute slag passing area is small, the residue soil spewing amount is small, and the belt in operation can be effectively conveyed. The anti-spewing structure of an earth pressure balance spiral conveyor gate solves the spewing problem more directly and effectively, and has large popularization prospect.

Description

technical field [0001] The invention relates to slag discharge by an earth pressure balance shield screw conveyor, in particular to an earth pressure balance shield structure and a shield method with a gate gushing-proof structure. Background technique [0002] Today's shield construction mainly adopts earth pressure balance shield and mud-water balance shield. Earth pressure balance shield has many advantages in shield construction, especially in urban rail transit, due to its small footprint, low construction cost, and fast construction progress. The number of shield tunnels has an absolute advantage in construction. [0003] Due to various reasons, the construction of earth pressure balance shield sometimes causes the output of muck to be relatively thin, and the muck is in a fluid state. As long as the gate is opened for a few centimeters, a large amount of muck will gushes out. Due to related restrictions such as the design of the shield machine, the belt where the out...

Claims

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Application Information

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IPC IPC(8): E21D9/08E21D9/12
CPCE21D9/08E21D9/124
Inventor 王国义文仁广陈建乐王小健南快飞田春雨路洪春
Owner POWERCHINA RAILWAY CONSTR
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