Hob-free hard rock tunneling machine for breaking rocks by utilizing microwaves and supercritical carbon dioxide

A hard rock boring machine, carbon dioxide technology, applied in mining equipment, earth-moving mining, tunnels, etc., can solve the problems of high cost and long construction period, achieve the effect of light weight, reduce excavation cost, and improve excavation efficiency

Inactive Publication Date: 2021-01-08
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a hobless hard rock tunneling machine that uses microwaves and supercritical carbon dioxide to break r

Method used

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  • Hob-free hard rock tunneling machine for breaking rocks by utilizing microwaves and supercritical carbon dioxide
  • Hob-free hard rock tunneling machine for breaking rocks by utilizing microwaves and supercritical carbon dioxide
  • Hob-free hard rock tunneling machine for breaking rocks by utilizing microwaves and supercritical carbon dioxide

Examples

Experimental program
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Example Embodiment

[0029]Example 1, a hobless hard rock boring machine that uses microwave and supercritical carbon dioxide to break rock, such asfigure 1 As shown, the shield body 8 is included. The central main drive unit 2 is provided in the shield body 8. The central main drive unit 2 is connected with the hob cutter head 1, and the center main drive unit 2 drives the hob cutter head 1 to rotate in a circumferential direction. A tube piece assembly machine 10 and a screw conveyor 12 are arranged in the shield body 8, and the feed end of the screw conveyor 12 is located next to the rear side of the hobless cutter head 1.

[0030]Since the hobless cutter head 1 is driven by the central main drive unit 2, the back of the hobless cutter head can have enough assembly space, and the microwave transmitter 3 is provided on the back of the hobless cutter head 1. The microwave transmitter 3 is connected with a microwave radiation arm 4 leading to the front side of the hobless cutter head 1. Microwave is an ult...

Example Embodiment

[0034]Example 2: A hobless hard rock boring machine using microwave and supercritical carbon dioxide to break rock, such asfigure 1 withFigure 6As shown, the supercritical carbon dioxide high-pressure delivery pipe 6 is wrapped with a glass fiber layer 61. The glass fiber layer 61 can effectively maintain the temperature of the supercritical carbon dioxide in the supercritical carbon dioxide high-pressure delivery pipe 6, and can effectively improve the supercritical carbon dioxide. Transport efficiency.

[0035]The other structure of this embodiment is the same as that of the first embodiment.

Example Embodiment

[0036]Example 3, a hobless hard rock boring machine that uses microwave and supercritical carbon dioxide to break rock, such asFigure 5 As shown, the microwave radiation arm 4 is telescopic, and the telescopic microwave radiation arm 4 can be adjusted according to the distance between the hobless cutter head 1 and the rock, so that the microwave radiation arm 4 can always closely fit the rock section , To avoid excessive scattering or reflection of microwaves and reduce heat dissipation efficiency.

[0037]The microwave radiating arm 4 includes a microwave transmitting end 42 that is inserted and matched with the hobless cutter head 1. The microwave transmitting end 42 is connected to a first telescopic cylinder 41, and one end of the first telescopic cylinder 41 is connected to the microwave transmitting end 42 , The other end is connected with the cutter head 1 without hob. Through the expansion and contraction of the first telescopic cylinder 41, the microwave emitting tip 42 can be...

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Abstract

The invention discloses a hob-free hard rock tunneling machine for breaking rocks by utilizing microwaves and supercritical carbon dioxide. The technical problems of high cost and long construction period caused by maintenance such as cutter replacement of a cutterhead in the tunneling process of an existing heading machine are solved. The hob-free hard rock tunneling machine comprises a central main driving unit connected with a hob-free cutterhead, a microwave emitter and a large slag outlet are arranged on the hob-free cutterhead, the microwave emitter is connected with a microwave radiation arm, a supercritical carbon dioxide nozzle is arranged on the hob-free cutterhead, and the supercritical carbon dioxide nozzle is connected with a supercritical carbon dioxide high-pressure pump station through a supercritical carbon dioxide high-pressure conveying pipe. A microwave and supercritical carbon dioxide jet flow coupled rock breaking system is adopted, a conventional cutter rock breaking technology is thoroughly abandoned, the problem that abnormal damage is extremely prone to occurring when a metal cutter of the tunneling machine cuts rocks is solved, the excavation efficiency is improved, and the excavation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of fifth-generation tunnel boring machines, in particular to a hob-less hard rock boring machine which uses microwaves and supercritical carbon dioxide to break rocks. Background technique [0002] At present, tunnel excavation for rock formations mainly relies on disc-shaped hobs to squeeze rocks to achieve the purpose of breaking rock mass. Yes, but in harder rock formations the hob method is poorly economical. Therefore, need subversive invention a kind of novel roadheader and rock-breaking work method. [0003] After searching, the existing Chinese utility model patent with the application date of 2018.12.25 and the application number of 201822184738.4 discloses a microwave-assisted rock-breaking TBM cutterhead for hard rock, including the main body of the TBM cutterhead. The main body of the TBM cutterhead is mainly composed of It is composed of single-edged rock-breaking hob, double-edged rock-breaki...

Claims

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Application Information

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IPC IPC(8): E21D9/08E21D9/10
CPCE21D9/08E21D9/1066E21D9/1073E21D9/1086E21D9/1093
Inventor 李光朱英冯亚丽彭飞虎于刘帅朱雷
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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