A split-start construction method for double-line shield tunneling in ultra-deep circular shafts

A split origination and construction method technology, applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the problem of pipeline extension, fixation, pressure maintenance protection, difficult maintenance, and splitting of ultra-deep circular shaft double-line shield The problems of long initial construction period and large loss of oil pressure and water pressure have achieved the effect of simple and convenient construction method, reduced construction risk and reduced pollution

CN112253151BActive Publication Date: 2022-06-28YSD RAIL TRANSIT CONSTR CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-06-28

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Abstract

A split-starting construction method for an ultra-deep circular shaft double-line shield. During construction, the first shield and the connecting bridge are assembled in the first area; the trolley platform is arranged in the second area; the trolley goes down the well And stacked on the platform of the trolley; install the reaction frame and support, and complete the starting preparation; the first shield tunneling starts; after the first shield tunnels to meet the requirements of the second shield trolley to go down the well, The trolley platform is arranged in the first area; the trolley goes down and stacked on the trolley platform; the preparation work for the departure of the second shield machine is completed. In the limited space, the method of the present invention adopts the method of stacking trolleys underground to make full use of the underground space, which can effectively reduce the extension of the pipeline and avoid various problems caused by the extension of the pipeline, and has the advantages of simple construction operation, economy and high efficiency. The advantages.
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Description

technical field

[0001] The invention relates to the technical field of double-line shield starting construction, in particular to an ultra-deep circular shaft double-line shield split starting construction method, which is suitable for space-compact shield starting construction. Background technique

[0002] Under the condition of limited space, the shield machine is generally started by split, that is, only the shield main machine is arranged underground, and the shield trailer is arranged on the ground for split excavation. The pipeline is extended until the main engine is excavated to the underground space, and then the complete machine is assembled and then the whole machine is excavated for construction. This method is suitable for the start of construction of shield splits with limited underground space and not deep working wells. For ultra-deep circular shafts, pipeline extension, fixation, pressure maintenance, protection, maintenance, etc. are all particularly diffi...

Examples

Embodiment Construction

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] An ultra-deep circular shaft double-line shield split start construction method, comprising the following steps:

[0035] Step 1: The construction of the starting working well of the ultra-deep circular shield is completed, including the first area and the second area where the left and right lines are set. Make construction preparations, make safety technical disclosure to the shield starting construction personnel, confirm that the setting of the embedded parts of the bottom plate is accurate, and confirm that the starting bracket goes down to the fixed elevation, level, and axis position is accurate. In the first area, the first shield machine 1 is assembled in the order of the middle shield, the front shield, the cutter head, the assembling machine, the shield tail, and the connecting bridge 2 in sequence.

[0036] Step 2: On the side...