Shield equipment capable of achieving underground butt joint and butt joint method

A shield and equipment technology, applied in underground chambers, mining equipment, shaft equipment, etc., can solve the problems of poor sealing effect and low efficiency of shield connection, so as to facilitate the disassembly of the machine in the cave, improve the construction safety factor, The effect of efficient tunnel construction

Active Publication Date: 2021-02-05
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a shield equipment and a docking

Method used

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  • Shield equipment capable of achieving underground butt joint and butt joint method
  • Shield equipment capable of achieving underground butt joint and butt joint method
  • Shield equipment capable of achieving underground butt joint and butt joint method

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Experimental program
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Effect test

Embodiment 3

[0034] Embodiment 3: A docking method of shield equipment that can realize underground docking, the steps are as follows:

[0035] S1: The radially telescopic gage knife 2-5 on the axially telescopic cutter head Ⅰ102 of the receiving side shield 1 is retracted in the radial direction, the atmospheric pressure cutter 2-4 is removed, and the telescopic drive mechanism 2-3 drives the axial The telescopic cutter head Ⅰ 102 is retracted as a whole; that is, the axial telescopic cutter head Ⅰ is retracted into the first shield body to avoid interference with the penetration side shield and facilitate the smooth docking;

[0036] S2: The shield machine 2 on the penetrating side continues to excavate and arrives within the set distance L from the shield machine 1 on the receiving side; that is, it excavates forward to a smaller distance L from the axial telescopic cutter head Ⅰ (L=5mm The value range of ~100mm can also be adjusted according to the actual construction conditions);

[...

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Abstract

The invention discloses shield equipment capable of achieving underground butt joint and a butt joint method. The problems that in the prior art, the shield butt joint efficiency is low, and the sealing effect is poor are solved. The shield equipment comprises a receiving side shield and a penetration side shield which are oppositely arranged. The receiving side shield comprises a first shield body. An axial telescopic cutter head I is arranged in the first shield body. The penetration side shield comprises a second shield body. An axial telescopic cutter head II is arranged in the second shield body. A penetration notch ring is arranged at the front end of the second shield body, and in the butt joint state, the penetration notch ring penetrates into the first shield body. A physical sealing mechanism or a chemical sealing mechanism is arranged at the position, matched with the first shield body, of the penetration notch ring. According to the shield equipment capable of achieving underground butt joint, the physical sealing mechanism or the chemical sealing mechanism is arranged at the butt joint position, different sealing and water stopping modes are adopted for different stratums, the sealing effect and the construction safety coefficient are improved, and the method is suitable for an underwater butt joint scheme under the high-water-pressure and ultra-long-distance conditions. The shield equipment capable of achieving underground butt joint and the butt joint method has certain reference significance for ultra-long-distance tunnel construction.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to shield equipment and a docking method capable of realizing underground docking. Background technique [0002] With the increasing demand for ultra-long-distance and ultra-high water pressure tunnels, more and more challenges are posed to shield construction and shield design. There are few reference projects for shield tunneling projects facing ultra-long distances and high water pressure in the world. At present, the general excavation service life of the shield machine is 10km. Since crossing the river and sea or other objective conditions do not allow the installation of intermediate working wells, ultra-long-distance excavation increases the safety risk of key components of the shield machine during the construction process; If there is a major fault or abnormal damage in the cave, it will be difficult to repair and overhaul. The existing document CN201910623576...

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D9/08E21D11/10
CPCE21D9/06E21D9/0607E21D9/0874E21D11/10
Inventor 贺开伟崔俊峰叶超张鹏豪冀庆恩徐纯杰王静郑帅超廖兆锦翟聪
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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