Lagging discharge preventing device and method for high-pressure flushing systems in shielding equipment

A technology of equipment warehouse and internal high pressure, applied in mining equipment, chemical instruments and methods, cleaning methods and utensils, etc., can solve the problems of tunneling mud circulating slag system stagnation, excessive stone particle size, etc.

Inactive Publication Date: 2020-01-10
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem in the prior art that the particle size of the stones is too large or the accumulation of too many crushed stones at the bottom of the silo fails to be carried out of the silo by the circulation in time, which leads to the stagnant discharge of the excavation mud circulation and slag discharge system

Method used

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  • Lagging discharge preventing device and method for high-pressure flushing systems in shielding equipment
  • Lagging discharge preventing device and method for high-pressure flushing systems in shielding equipment
  • Lagging discharge preventing device and method for high-pressure flushing systems in shielding equipment

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Embodiment 1

[0046]An anti-sluggish discharge device for the high-pressure flushing system in the shield equipment chamber, see Figure 1 to Figure 8 , the design includes a mud circulation system connected to the reverse flushing branch. The main road of the mud circulation system is equipped with a slurry inlet pump and a slurry discharge pump. The main road is connected to the excavation branch. Scouring branch, scouring branch in grille, reverse flushing branch, cutterhead flushing branch; mud door flushing branch, crusher flushing branch, grille interior flushing branch, reverse flushing branch, cutterhead flushing branch There are corresponding opening and closing valves on the road. The outlet of the mud door scour branch is set at the bottom of the front partition in the shield machine, and the outlet of the crusher scour branch is set at the bottom edge of the rear partition in the shield machine. The outlet of the flushing branch in the grid is set in the middle of the bottom of ...

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Abstract

The invention relates to the field of shielding protection equipment, in particular to a lagging discharge preventing device and method for high-pressure flushing systems in shielding equipment, and aims at solving the problem that the stones with too large particle sizes or broken stones accumulated at the bottoms of warehouses cannot be carried out from the warehouses due to circulation so as tocause lagging discharge to the tunneling mud circulation deslagging systems in the prior art. The device comprises a mid circulation system which is connected with a reverse flushing branch; a mud inlet pump and a mud discharge pump are mounted on the trunk of the mud circulation system; and the trunk is connected with a tunneling branch, a maintenance and pressure maintenance branch, a bypass branch, a halt mud protection branch, the reverse flushing branch and a muddy water recovery branch. The device and method have the advantages of greatly reducing the lagging discharge of the circulation deslagging systems and being easy for manual operation.

Description

technical field [0001] The invention relates to the field of shield tunneling protection equipment, in particular to an anti-stagnation device and an anti-stagnation method for a high-pressure flushing system in a shield tunneling equipment chamber. Background technique [0002] The particle size of the bedrock crushed stones cut by the shield machine mainly depends on the speed of the shield machine, the penetration of the cutter, the control of the rotational speed of the cutter head, and the development of rock joints and fissures. During the excavation process of the raised section of the bedrock, the excavation speed should be controlled as much as possible to ensure the stability of the excavation speed and form continuous excavation. When excavating the boulder section, the construction should be carried out according to the principle of the bottom speed of the cutterhead and the low penetration of the cutter, so as to control the particle size of the cut stones. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/087E21D9/12B08B3/02
CPCB08B3/022E21D9/06E21D9/087E21D9/12
Inventor 韩伟锋孙振川杨振兴郭璐杨延栋张合沛王利明翟乾智孙飞祥高会中
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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