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Heading machine using supercritical carbon dioxide jet flow to break rock

A carbon dioxide and supercritical technology, which is applied in mining equipment, mining equipment, earthwork drilling, etc., can solve the problems of high cost, easy abnormal damage of disc-shaped hob, low driving efficiency, etc., and achieve the effect of ensuring reliability

Inactive Publication Date: 2019-06-18
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a roadheader that utilizes supercritical carbon dioxide jets to break rocks, which solves the technical problems of the existing roadheader that the disc-shaped hob is easily damaged abnormally, the excavation efficiency is low, and the cost is high

Method used

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  • Heading machine using supercritical carbon dioxide jet flow to break rock
  • Heading machine using supercritical carbon dioxide jet flow to break rock

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Effect test

Embodiment 1

[0014] Embodiment 1, utilize supercritical carbon dioxide jet to break the roadhead machine of rock, as figure 1 and figure 2 As shown, a cutter head system 1 is included, and a supercritical carbon dioxide injection nozzle 2 is arranged on the cutter head system 1, and the supercritical carbon dioxide injection nozzle 2 is connected with a supercritical carbon dioxide generator 3 through a high-pressure pipeline 5 . Supercritical carbon dioxide generator 3 can produce supercritical carbon dioxide, and supercritical carbon dioxide generator 3 can deliver the supercritical carbon dioxide produced to supercritical carbon dioxide injection nozzle 2 through high-pressure pipeline 5, and supercritical carbon dioxide injection nozzle 2 will supercritical carbon dioxide It is ejected at an ultra-high speed to form a jet beam with highly concentrated energy. This jet beam has the effects of cavitation damage, water jet impact, water wedge and thermal fracture, and can crack rocks to ...

Embodiment 2

[0016] Embodiment 2, using supercritical carbon dioxide jets to break rocks, the supercritical carbon dioxide injection nozzle 2 and the high-pressure pump station 4 are all connected to the control system, and the control system can remotely adjust the output pressure of the high-pressure pump station 4 and control the supercritical The opening and closing of the carbon dioxide injection nozzle 2 can conveniently adjust the pressure of the supercritical carbon dioxide injected by the supercritical carbon dioxide injection nozzle 2 according to different geology.

[0017] Other structures of this embodiment may be the same as Embodiment 1.

Embodiment 3

[0018] Embodiment 3, utilizing supercritical carbon dioxide jets to break rocks, the high-pressure pipeline 5 between the high-pressure pump station 4 and the supercritical carbon dioxide injection nozzle 2 is provided with a pressure gauge, which can be monitored in real time according to the pressure gauge. The pressure of the supercritical carbon dioxide can be adjusted in real time through the high-pressure pump station 4.

[0019] Other structures of this embodiment may be the same as those of Embodiment 1 or 2.

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Abstract

The invention discloses a heading machine using a supercritical carbon dioxide jet flow to break a rock. The technical problems that a disc cutter of the existing heading machine is easy to damage anomaly, low in heading efficiency, and high in cost are solved. The heading machine includes a cutter head system, a supercritical carbon dioxide jet nozzle is arranged on the cutter head system, the supercritical carbon dioxide jet nozzle is connected with a supercritical carbon dioxide generating device through a high-pressure pipeline, and the supercritical carbon dioxide jet nozzle is connectedwith the supercritical carbon dioxide generating device through a high-pressure pump station. The supercritical carbon dioxide generating device can generate supercritical carbon dioxide, the supercritical carbon dioxide can be transported to the supercritical carbon dioxide jet nozzle by the high-pressure pump station, the supercritical carbon dioxide can be jetted at a higher speed by the supercritical carbon dioxide jet nozzle to form a jet flow beam with high concentrated energy, and the jet flow beam is provided with the high destructive effect and can broke the rock to realize heading. According to the heading machine using the supercritical carbon dioxide jet flow to break the rock, the rock breaking efficiency is high, the cost is low, and a rock breaking medium is green and environmental protection.

Description

technical field [0001] The invention relates to the technical field of roadheaders, in particular to a roadheader that utilizes supercritical carbon dioxide jets to break rocks. Background technique [0002] At present, tunneling is aimed at the rock formation, mainly relying on the disc-shaped hob to squeeze the rock to break the rock mass. It mainly overcomes the compressive strength of the rock, and its rock-breaking efficiency is aimed at the rock formation with general strength (within 100MPA). It is acceptable, but when the roadheader encounters boulders and hard rocks during the excavation process, the efficiency of the hob to squeeze and break the rock will decrease, and the abnormal wear and replacement frequency of the hob will increase, resulting in a decrease in the efficiency of shield tunneling , The cost of excavation increases. At the same time, when excavating seriously uneven geological conditions such as soft top and bottom hard, uneven soft and hard, tra...

Claims

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Application Information

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IPC IPC(8): E21D9/10E21D9/11E21F17/18
Inventor 朱英李建斌贾连辉叶蕾杨兴亚呼瑞红龙伟漾
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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