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Laser-assisted tunnel boring machine and rock breaking method thereof

A tunnel boring machine, laser-assisted technology, applied in tunnels, earth-moving drilling, mining equipment, etc., can solve the problems of poor adaptability to different rock surfaces, reduce driving efficiency, increase construction costs, etc., to improve rock breaking efficiency, reduce Construction cost, the effect of saving construction cost

Active Publication Date: 2017-06-23
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor adaptability and limitations of the traditional tunneling machine method to the uneven soft and hard geological conditions and different rock surfaces, and it is often accompanied by the wear of the cutter, the tunneling efficiency is reduced and the construction cost is increased.

Method used

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  • Laser-assisted tunnel boring machine and rock breaking method thereof
  • Laser-assisted tunnel boring machine and rock breaking method thereof
  • Laser-assisted tunnel boring machine and rock breaking method thereof

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described below in conjunction with the technical solutions and accompanying drawings.

[0020] The traditional tunnel boring machine drives the cutterhead 10 to rotate through the driving device 7, and at the same time opens the propulsion cylinder of the tunnel boring machine to push the shield machine forward. With the advancement of the propulsion cylinder, the cutterhead continues to rotate and is sheared and squeezed. The broken stones are sent to the belt conveyor by the screw conveyor 8, and then transported to the outside by the belt conveyor.

[0021] On the basis of the traditional roadheader, the laser 3 and the water spray system 11 are arranged on the cutter head 10 and the blade 2 is alternately distributed, wherein the laser adopts a fiber laser, and there are various types of work by setting different output powers to adapt to rocks of different strengths. , by setting the moni...

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Abstract

The invention belongs to the technical field of tunnel engineering and discloses a laser-assisted tunnel boring machine and a rock-breaking method thereof. The machine is characterized by two rock breaking modes, a laser-hob rock breaking mode and a hob rock breaking mode. Identification and conversion of the two rock breaking modes can be achieved by an intelligent control system. The laser-hob rock breaking mode is used in hard rock sections for the improvement of rock breaking efficiency, while the hob rock breaking mode is used in soft rock sections. The main breaking mode of the laser-assisted rock breaking is hot-break, wherein a laser is used with a laser head installed on a cutter of the tunnel boring machine, supplemented by a water spray system, so that the goal of hot crack by laser irradiation with rapid cooling for assisting rock breaking by water spray and further excavation by mechanical rock breaking is achieved. With the reasonable selection of the rock breaking modes, the adaptation of the tunnel boring machine to complex geological conditions alternated with soft and hard rocks is improved, thereby the rock breaking efficiency is enhanced and the construction cost is saved.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering and relates to a laser-assisted tunnel boring machine and a rock-breaking method thereof. Background technique [0002] At present, the roadheader method and the blasting method are the two main methods of tunnel excavation. For the conventional excavation method, the rock is sheared and crushed by using a large cutter, and then the crushed stone is transported out through the supporting transportation equipment. . Because the traditional tunneling machine method has poor adaptability to uneven soft and hard geological conditions and different rock surfaces, its use is limited, and it is often accompanied by tool wear, which reduces the tunneling efficiency and increases the construction cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to select an efficient rock-breaking mode and effectively reduce the wear of the hob under chan...

Claims

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Application Information

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IPC IPC(8): E21D9/10
CPCE21D9/003E21D9/1006E21D9/1066E21D9/1073E21D9/108
Inventor 王峥峥高阳
Owner DALIAN UNIV OF TECH
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