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A high-pressure water-assisted rock-breaking system and construction method for tunnel boring machines

A tunnel boring machine, high-pressure water technology, used in tunnels, earth-moving drilling, mining equipment, etc.

Active Publication Date: 2021-09-17
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] High-pressure water rock breaking not only needs to consider the pressure bearing capacity of the system itself but also the compatibility with TBM. There is no efficient and compatible high-pressure water-assisted rock breaking system in the existing market. Therefore, for high-pressure water It is necessary to do further innovative development of the water-assisted rock breaking system

Method used

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  • A high-pressure water-assisted rock-breaking system and construction method for tunnel boring machines
  • A high-pressure water-assisted rock-breaking system and construction method for tunnel boring machines
  • A high-pressure water-assisted rock-breaking system and construction method for tunnel boring machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1, such as Figure 1-4 As shown, a high-pressure water-assisted rock-breaking system for tunnel boring machines includes a softening treatment system, a power system, a conveying system and a high-pressure injection system connected in sequence; the liquid inlet end of the high-pressure injection system is connected with the conveying system, and the high-pressure The liquid outlet of the injection system is connected with the cutter head 1, the softening treatment system is connected with a water source, and the power system provides power for the conveying system. The external water source enters the softening treatment system for filtration and softening treatment, and then under the action of the power system, the treated atmospheric pressure water is converted into high-pressure water and sent to the delivery system. The high-pressure water enters the high-pressure injection system through the delivery system to form a high-pressure water jet. Rock breaking...

Embodiment 2

[0038] Example 2, such as Figure 5 As shown, a high-pressure water auxiliary rock-breaking system for tunnel boring machines, the high-pressure injection system includes a protection assembly 2 and a water spray mechanism 3, the protection assembly 2 is fixedly arranged on the front end surface of the cutter head 1, and the water spray mechanism One end of 3 is located in the protection assembly 2, and the other end is fixed on the back of the cutter head 1, and the water spray mechanism can be disassembled from the cutter head back, which is convenient for maintenance and replacement of the water spray mechanism. The water inlet end of the water spray mechanism 3 is connected with the conveying system, and the cutter head 1 is connected with the main drive 6 arranged in the host machine 17 . The protection component 2 and the water spray mechanism 3 correspond one-to-one. According to the needs, multiple protection components 2 and water spray mechanisms 3 can be installed o...

Embodiment 3

[0043] Example 3, such as figure 1 As shown, a high-pressure water-assisted rock-breaking system for tunnel boring machines, the conveying system includes a high-pressure rotary joint 7, a rotating high-pressure pipe 8 and a fixed high-pressure pipe 9, and the high-pressure rotary joint 7 is fixedly arranged on the back of the cutter head 1 , the water outlet end of the high-pressure rotary joint 7 is connected with the high-pressure injection system through the rotating high-pressure pipe 8, and the rotating high-pressure pipe 8 rotates synchronously with the cutter head under the action of the main drive, and the water inlet end of the high-pressure rotary joint 7 is connected with the fixed high-pressure pipe 9 The high-pressure water in the fixed high-pressure pipe changes from the axial water to the radial water through the high-pressure rotary joint, and enters the high-pressure injection system in a branch. The high-pressure rotary joint can withstand the highest pressu...

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Abstract

The invention discloses a high-pressure water auxiliary rock-breaking system and a construction method for a tunnel boring machine. The invention includes a softening treatment system, a power system, a delivery system and a high-pressure injection system connected in sequence; the liquid inlet end of the high-pressure injection system is connected to the delivery system, the liquid outlet end of the high-pressure injection system is connected to the cutter head, and the softening treatment system is connected to the There is a water source, and the power system provides power for the delivery system. The present invention is designed according to the existing TBM structure, has good compatibility, improves the utilization rate of the system, cooperates with the existing TBM to carry out combined rock breaking with high-pressure water and mechanical cutters, and improves the rock breaking efficiency, which is a major innovation in tunnel excavation.

Description

technical field [0001] The invention relates to the technical field of high-pressure water assisted rock breaking, in particular to a high-pressure water assisted rock breaking system and a construction method for tunnel boring machines. Background technique [0002] The traditional tunnel boring machine (TBM) adopts mechanical rock breaking, and uses hobs to press, roll, and grind the hard rock, causing high-stress areas and cracks in the hard rock. As the cracks expand, gravel flakes are formed. Thereby realizing the purpose of hard rock tunnel excavation, but this kind of rock-breaking mode is extremely serious to the wearing and tearing of hob. In recent years, scholars at home and abroad have proposed a concept of using high-pressure water jets to assist TBM hobs in rock breaking. This concept is to use the impact force of high-pressure water to achieve the purpose of assisting TBM hobs in hard rock. [0003] High-pressure water rock breaking not only needs to consider...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/10E21D9/11
CPCE21D9/1066E21D9/11
Inventor 谭顺辉卓兴建贾连辉贺飞齐志冲宁向可
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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