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Replacement method in hole for main drive sealing failure of earth pressure balance shield machine under normal pressure

A technology of earth pressure balance and sealing failure, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve the problems of large impact on project construction, high cost, and long duration of technical solutions, so as to improve construction progress and work efficiency. Low cost and the effect of improving the competitiveness of enterprises

Inactive Publication Date: 2017-08-25
中铁工程装备集团盾构制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a treatment technology scheme has a long construction period and high cost, which has a great impact on the project construction

Method used

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  • Replacement method in hole for main drive sealing failure of earth pressure balance shield machine under normal pressure
  • Replacement method in hole for main drive sealing failure of earth pressure balance shield machine under normal pressure
  • Replacement method in hole for main drive sealing failure of earth pressure balance shield machine under normal pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Right line shield opening position

[0053] 1. Industrial and mining introduction: The tunnel between Station X and Station B (XB section) is constructed using the shield method. The shield section starts from the south end of Station X, passes through the middle air shaft, and reaches Station B. The shield section goes south along Wanquanhe Road and passes through the pile foundation of the X Bridge, the section tunnel of Metro Line 4, the overpass on the south side of the X Hospital, and the office buildings in the A Township plot, crosses the Xinjian Gongmen Road vertically, and then passes through the basement A security Pavilion structure, turn east and cross A park and its man-made lake, and arrive at station B on the northwest side of area C.

[0054] The interval from X to B is the double-line shield interval. The design mileage of the left line is BK19+694.200~BK21+323.007, and the design mileage of the right line is BK19+694.200~BK21+346.514. There is one lo...

Embodiment 2

[0104] Example 2 Replacement in the outer sealing hole of the main drive

[0105] 1. Program introduction

[0106] According to the current inspection and continuous observation of China Railway No. 212 (HBW, EP2 and a small amount of sediment were found in the inspection chamber, and the gear oil level did not drop), it is preliminarily inferred that the first three seals have failed, and the fourth seal is intact. The general plan is: remove the first two seals (due to the limitation of space size, only the first two seals can be replaced in the hole without dismantling the cutter head), check the wear of the sealing runway, move the runway up 8mm, and clean the gears Oil chamber, detection chamber and drive box, bonded and sealed, installed seal and spacer ring, pressure ring, welded sealing plate, and carried out static load and dynamic test of outer seal.

[0107] 2. Put gear oil and clean the drive box

[0108] Drain the gear oil in the drive box through the oil outlet...

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Abstract

The invention discloses a replacement method in a hole for main drive sealing failure of an earth pressure balance shield machine under normal pressure, which comprises the following steps: a first step of preparatory work before opening, a second step of sealing replacement in the opening hole under normal pressure, a third step of sealing performance determination, a fourth step of cleaning a gear oil cavity and a detection cavity and replacing drive box gear oil and a fifth step of rules for follow-up tunneling matters need attention. The main drive does not need to be hung to the ground to carry out the operation of disassembly, replacement, sealing and installation, directly in the hole. The replacement method in the hole for the main drive sealing failure of the earth pressure balance shield machine under normal pressure has the advantages of being short in implementation period, low in cost, simple in operation and achievable in solving the replacement problem of the main drive sealing failure of the earth pressure balance shield machine under normal pressure, thereby greatly improving the construction schedule and work efficiency, reducing the construction cost of enterprises and improving the competitive power of the enterprises. The fault treatment for the similar equipment by the shield machine is a solution worthy of reference.

Description

technical field [0001] The invention relates to the technical field of replacement of a main drive seal of a shield tunneling machine, in particular to a method for replacing a main drive seal failure hole of an earth pressure balance shield machine under normal pressure. Background technique [0002] With the continuous development of society and the continuous progress of science and technology, especially the accelerated development of urbanization, the rapid development of urban infrastructure and rail transit has been driven. In the process of limited surface space being used in large quantities, underground space has been expanded. With continuous development and utilization, the construction method of earth pressure balance shield machine is more and more applied to the construction of urban subways. [0003] The basic principle of shield tunneling is to excavate the soil along the design axis of the tunnel and advance it with a physical steel component. Before the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
CPCE21D9/06
Inventor 张哲学李楠赵新合李宁
Owner 中铁工程装备集团盾构制造有限公司
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