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A water-jet demolition and diameter-expanding roadheader and its construction method

A technology of water jet and roadheader, which is applied in the field of pipeline expansion and excavation, can solve the problems of original pipeline demolition and low excavation work efficiency, and achieve the effects of improving construction efficiency, good integration and wide application range.

Active Publication Date: 2022-03-22
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the above-mentioned background technology, the present invention proposes a water-jet demolition and diameter-expanding roadheader and its construction method, which solves the problem of low work efficiency of Zhongyuan pipeline demolition and expansion in the prior art

Method used

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  • A water-jet demolition and diameter-expanding roadheader and its construction method
  • A water-jet demolition and diameter-expanding roadheader and its construction method
  • A water-jet demolition and diameter-expanding roadheader and its construction method

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Embodiment 3

[0041] Example 3, such as Figure 6 , 7 Shown, a kind of breaking and opening, expanding diameter tunneling machine, in order to improve the efficiency, the water jet rock breaking mechanism is provided on the pipeline breaking device 3 and the expanding cutter head, and then the water jet rock breaking mechanism 9 includes the The expansion water jet nozzle 901 on the disc main body 401 and the demolition water jet nozzle 902 arranged on the suspension arm 301, the expansion water jet nozzle 901 and the demolition water jet nozzle 902 are connected with the high pressure water system through a rotary mechanism.

[0042] Further, the rotary mechanism includes a first rotary joint 903 arranged in the tunneling main engine 1, the first rotary joint 903 is arranged concentrically with the cutter head main body, and the first rotary joint 903 is provided with a radial water outlet pipe 904 and a central outlet pipe. The water pipe 905, the radial outlet pipe 904 and the center ou...

Embodiment 4

[0044] Embodiment 4, a kind of construction method of water jet demolition and expanding diameter boring machine as described in embodiment 3, the steps are as follows:

[0045] S1: Hoist the demolition and expansion boring machine to the original pipeline, and debug it to the ready-to-work state;

[0046] S2: Start the demolition and diameter-expanding roadheading machine, the pipeline rescue device 3 of the demolition and diameter-expanding roadheader first demolishes the original pipeline, and the 4 pairs of expanding cutterheads of the demolition and diameter-expanding roadheader are demolished Excavation of the tunnel;

[0047] S3: During the excavation process of the roadheader in step S2, the water jet rock-breaking mechanism 9 of the pipeline demolition device 3 cooperates with the suspension cutting hob 3013 of the pipeline demolition device 3 to perform high-pressure water jet demolition of the steel bars in the original pipeline; The water jet rock-breaking mechani...

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Abstract

The invention discloses a water-jet demolition and diameter-expanding roadheader and a construction method thereof, which solves the problem of low working efficiency in the demolition and expansion of Zhongyuan pipelines in the prior art. The present invention includes a main machine for excavation and supporting equipment. The front end of the main machine for excavation is provided with an expanding cutter head which is connected with the main drive provided in the main machine for excavation. The dismantling device, the pipe breaking device and / or the expanding excavation cutter head are provided with a water jet rock breaking mechanism, which is connected with the high-pressure water system, and the expanding excavation cutter head corresponds to the slag discharge system. The present invention uses a pipeline demolition device plus a water-jet rock-breaking mechanism to carry out the suspension cutting and water-jet rock-breaking mechanism on the original pipeline, and extrudes the original pipeline tunnel by adding a water-jet rock-breaking mechanism through an expanded excavation cutter head. After the rock breaking, the diameter is expanded, and the demolition and diameter expansion are completed at one time. The rock breaking efficiency is high, and the construction efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of pipe expansion and excavation, in particular to a water-jet demolition and diameter-expanding roadheader and a construction method thereof. Background technique [0002] With the rapid development of urbanization, the diameter of the original pipes no longer meets the demand, and the old pipes need to be demolished, expanded, and re-laid. Moreover, many underground sewage pipes are leaking due to aging, and new pipes are urgently needed to be replaced. [0003] When the commonly used pipe bursting method is used to break the pipeline, the pipe bursting tool is used to break the old pipe, the pipe fragments are squeezed into the surrounding soil layer, and the new pipe is pushed in at the same time, but this method has high geological requirements, and the old pipeline is buried deep. Shallow or non-compactable ground will cause the ground to bulge, and will also cause damage to adjacent pipelines. At the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/01E21B7/18E02F5/00E02F5/30
CPCE21D9/01E21B7/18E02F5/00E02F5/30
Inventor 姜礼杰杨航原晓伟王一新贾连辉钱豪
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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