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High-pressure-water cavitation rock breaking TBM and construction method thereof

A high-pressure water and high-pressure water pump technology, used in earth-moving drilling, mining equipment, tunnels, etc., to achieve the effect of reducing total thrust, reducing vibration, and reducing central belt conveyors

Inactive Publication Date: 2019-11-05
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, cavitation water jet rock breaking has become a new direction for rock breaking, and in the prior art, there is no above-mentioned cavitation water jet rock breaking device, so it is necessary to develop a high-efficiency rock-breaking pressure water cavitation rock-breaking TBM

Method used

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  • High-pressure-water cavitation rock breaking TBM and construction method thereof
  • High-pressure-water cavitation rock breaking TBM and construction method thereof
  • High-pressure-water cavitation rock breaking TBM and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1, such as figure 1 As shown, a high-pressure water cavitation rock-breaking TBM includes a main machine 1, a cutter head 2 is provided at the front end of the main machine 1, and several pulse cavitation nozzles 3 are arranged on the cutter head 2, and the pulse cavitation nozzles can be covered with The front end of the cutter head is suitable, and the pulse cavitation nozzle 3 is connected to the high-pressure water system. The high-pressure water system leads the high-pressure water to the pulse cavitation nozzle to form a cavitation water jet, which instantly generates high pressure and micro jets to directly erode the broken rock , to achieve full-section pure water rock breaking. The rear of the cutter head 2 is connected with a vacuum sewage system, which uses the jet vacuum sewage device as a power source to discharge sludge and water. The vacuum sewage system has high sewage discharge efficiency and compact structure. The installation in the center pr...

Embodiment 2

[0028] Example 2, such as figure 1 As shown, a high-pressure water cavitation rock-breaking TBM, the high-pressure water system includes a high-pressure water pump set 8, the high-pressure water pump set 8 is provided with a first high-pressure pipeline 14, and the first high-pressure pipeline 14 passes through a multi-channel high-pressure rotary assembly 12 is connected to the high-pressure pipeline 2 of the cutter head. Under the action of the high-pressure water pump group, the high-pressure water enters the multi-channel high-pressure rotary assembly 12 through the first high-pressure pipeline. The multi-channel high-pressure rotary assembly is a kind of rotary joint. The high-pressure rotary center Used to deliver high pressure water to the rotating cutter head. One end of the cutterhead high-pressure pipeline 2 is rotatably connected to the multi-channel high-pressure rotary assembly 12 , and the other end is connected to the pulse cavitation nozzle 3 . The high-pressu...

Embodiment 3

[0030] Example 3, such as Figure 4 As shown, a high-pressure water cavitation rock-breaking TBM, the sewage pipeline 19 is provided with a filter and purification device 20, the filter and purification device 20 filters and purifies the sewage separated by the slag-water separation device 15, and the filter and purification device 20 A water outlet pipe 22 is provided, and a water pump is arranged on the water outlet pipe. The water outlet pipe 22 is connected with the high-pressure water pump group 8. Under the action of the water pump, the filtered and purified water enters the high-pressure water pump group, and then re-passes into the pulse cavitation nozzle to perform cavitation. The jet breaks rocks and realizes water circulation.

[0031] Other structures are the same as in Embodiment 2.

[0032] A construction method of high-pressure water cavitation rock-breaking TBM, comprising the following steps:

[0033] S1: Start the high-pressure water pump set and adjust the...

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Abstract

The invention discloses a high-pressure-water cavitation rock breaking TBM and a construction method thereof. The TBM comprises a main machine. A cutter disc is arranged at the front end of the main machine and provided with pulse cavitation nozzles. The pulse cavitation nozzles are connected with a high-pressure-water system. A vacuum sewage discharge system is connected to the rear portion of the cutter disc. The cutter disc is connected with a main driver arranged in the main machine. A slag inlet is formed in the front end face of the cutter disc. A muddy water bin is arranged on the rearportion of the cutter disc. A slag outlet is formed in the lower portion of the muddy water bin and connected with the vacuum sewage discharge system. According to the TBM, the multiple pulse cavitation nozzles are reasonably arranged on the cutter disc, the high pressure water forms cavitation water jet flow after passing through the cavitation nozzles and directly impacts, corrodes and crushes rock, full-fracture-surface pure water rock breaking is achieved, the rock breaking efficiency is improved, and the construction risk is reduced. According to the TBM, non-contact type rock breaking isadopted, torque and total thrust of the main driver can be reduced effectively, power of the main driver is reduced, meanwhile, vibration of the TBM is reduced, and abrasion and replacement of cutters are reduced.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a high-pressure water cavitation rock-breaking TBM and a construction method thereof. Background technique [0002] TBM excavation is commonly used in the mechanized construction of long-distance mountain tunnels. At present, TBM mostly uses hobs to press, roll, split and grind rocks to achieve the purpose of breaking rocks. The broken rock is scraped into the belt conveyor by the cutterhead bucket, and the belt conveyor transports the broken rock to the transport locomotive or the continuous belt conveyor connected at the rear, and then transported to the outside of the cave to complete the excavation process. When hard rock is encountered during excavation, the hob is severely worn and frequently changed, which seriously affects the excavation efficiency. [0003] Based on this reason, a variety of auxiliary rock-breaking measures are proposed to improve tunneling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10E21D9/11
CPCE21D9/10E21D9/1066E21D9/11
Inventor 谭顺辉郭付军李光周小磊朱团辉许顺海冯超强高可可张凯徐志良
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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