Muddy water and earth pressure double-mode shield system and control method

A dual-mode, mud-water-soil technology, applied in earth-moving drilling, mining equipment, tunnels, etc., can solve problems such as troublesome operation, reduce labor intensity, reduce transportation difficulty, and improve construction efficiency.

Active Publication Date: 2020-06-09
CCCC SECOND HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that when switching to the mud-water balance construction method, it is necessary to remove the conveyor belt and replace the stone-collecting and crushing box, while in the earth pressure balance construction method, it is necessary to replace the stone-collecting and crushing box with a conveyor belt, which is more troublesome to operate

Method used

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  • Muddy water and earth pressure double-mode shield system and control method
  • Muddy water and earth pressure double-mode shield system and control method
  • Muddy water and earth pressure double-mode shield system and control method

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Experimental program
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Effect test

Embodiment 1

[0037] Such as Figure 1~3 Among them, a mud-water-earth pressure dual-mode shield system includes a shield part, a mud separation trolley 8 and a bentonite mud preparation trolley 9 following the shield part; the mud separation trolley 8 is provided with a mud separation device, It is used to separate mud and stones on site, so that mud can be recycled as much as possible, saving resources and reducing energy consumption. It is also convenient for the transportation of gravel and avoids mud dripping onto the road during the process of transporting gravel. The bentonite slurry preparation trolley 9 is used to prepare bentonite slurry for lubricating and cooling the shield cutter head 1 .

[0038] A shield cutterhead 1 is provided at the front end of the shield part, and an earth bin 2 is arranged behind the shield cutter head 1, and the entrance of the screw conveyor 5 is obliquely connected to the lower section of the earth bin 2; the screw conveyor 5 rotates shaft blades ,...

Embodiment 2

[0055] Such as Figure 1~3 Among them, a construction method using the above mud-water-soil pressure dual-mode shield tunneling system, in the earth pressure balance shield working condition, close the first circulation valve 19 on the first circulation pipe 27, and open the gate of the quarry box 6 The plate 64 adjusts the rotation speed of the screw conveyor 5 according to the soil bin pressure sensor 33 provided in the soil bin 2, so that the pressure in the soil bin 2 meets expectations. The stones at the outlet of the screw conveyor 5 are discharged to the conveyor belt 10 through the quarry box 6, and the stones or gravels are transported to the outside of the cave from the subsequent conveyor belt 10 or the slag transport trolley for earth pressure shield construction;

[0056] In the mud-water balance shield working condition, start the first mud circulation pump 14, open the first circulation valve 19 of the first circulation pipe 27, and the first mud circulation pum...

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Abstract

The invention provides a muddy water and earth pressure double-mode shield system and a control method. The muddy water and earth pressure double-mode shield system comprises a shield part, a slurry separation trolley and a bentonite slurry preparation trolley, wherein the slurry separation trolley and the bentonite slurry preparation trolley follow the shield part; a shield cutter head is arranged at the front end of the shield part; a soil bin is arranged behind the shield cutter head; an inlet of a spiral conveyor is connected into the lower section of the soil bin; a lubricating slurry inlet pipe connected to the shield cutter head and a pressure slurry inlet pipe connected to the soil bin are also arranged; the spiral conveyor is connected with a slurry discharge device; the slurry discharge device is connected with a first circulating pipe; and the first circulating pipe is connected with the lubricating slurry inlet pipe and the pressure slurry inlet pipe. According to the muddywater and earth pressure double-mode shield system and the control method, the spiral conveyor is adopted as a single slurry outlet of the soil bin, so that the installation space is reduced, the seamless switching of a muddy water balance shield mode and an earth pressure balance shield mode is realized, the construction efficiency is improved, and the labor intensity of field construction is greatly reduced.

Description

technical field [0001] The invention relates to the field of shield tunneling equipment and construction, in particular to a mud-water-earth-pressure dual-mode shield tunneling system and method capable of rapid switching. Background technique [0002] Common shield machines are divided into earth pressure balance shields and mud-water balance shields. The basic principle of the earth pressure balance shield is that the cutter head cuts the soil layer, and the cut soil enters the soil cabin, and the soil in the soil cabin is balanced with the pressure of the excavation surface, and at the same time, it is unearthed by the screw conveyor in the soil cabin. The soil discharge device at the discharge port performs continuous excavation in a state where the excavation volume and the propelling volume are in balance. The basic principle of mud-water balanced shield tunneling is to inject appropriate pressure of mud into the airtight cabin where the partition is installed in fron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08E21D9/12
CPCE21D9/08E21D9/124
Inventor 刘国栋崔洪谱张维何普鑫孙恒潘真
Owner CCCC SECOND HARBOR ENG
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