Design method for cutter head of laser full fracture surface rock tunnelling machine

Abstract

The invention belongs to the technical field of tunnelling of full fracture surface rock tunnelling machines and provides a design method for a cutter head of a laser full fracture surface rock tunnelling machine. A combination of a laser and a high-pressure water jet is adopted to break rock, the rock breaking mode of the cutter head is not dependent on the rolling effect of a hob and rock, therefore, a center plate on a traditional cutter head is removed, a laser device and a high-pressure water gun are driven by different shafts correspondingly, after the rock is treated by the laser, the rock surface is immediately sprayed through the high-pressure water gun, and then the remaining rock is treated through an edge scraper, so that the purpose of rock breaking is achieved. The cutter head does not make contact with the rock surface for most of the time, so that compared with the traditional cutter head, the vibration amplitude of the cutter head can be greatly reduced; molten slag and rock slag can be effectively removed and the high temperature caused by the laser can be reduced due to the existence of a high-pressure water flow; and the cutter head is not provided with the center plate, so that the water flow entrained waste slag can be conveniently discharged out of a working area.

Description

technical field [0001] The invention belongs to the technical field of full-section rock excavation machines. On the basis of existing traditional full-section hard rock excavation machine cutter heads, a full-section rock-breaking excavator cutter head structure combining laser and high-pressure water jets is designed. Background technique [0002] In recent years, full-face rock boring machines have been widely used in the construction of water conservancy projects, railway transportation, subway projects, oil and gas pipelines and national defense tunnels in China. But most of these projects use traditional tunneling methods, which use rotating disc-shaped cutterheads and pressure on the blade face to cut through the rock. Although compared with the original drill and blast method, the TBM tunneling device overcomes the shortcomings of its low degree of mechanization, low labor productivity, low equipment utilization and low safety. However, due to the harsh working envi...

AI Technical Summary

Problems solved by technology

In addition, the removal of rock slag and rock powder melted by laser is also a problem

Therefore, there are almost no patents on the application of laser rock breaking in actual tunneling devices.

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