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Shield arrival gate plate type emergency safety device

A technology of safety devices and shields, which is applied in mining devices, mining equipment, earthwork drilling, etc., can solve problems such as potential safety hazards, and achieve the effects of easy disassembly, low cost, and reduced risks

Active Publication Date: 2015-07-08
SHANGHAI TUNNEL ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems and potential safety hazards of the existing related shield tunneling technology and realize the safe and fast arrival of shield tunneling, further research should be carried out

Method used

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  • Shield arrival gate plate type emergency safety device
  • Shield arrival gate plate type emergency safety device
  • Shield arrival gate plate type emergency safety device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The implementation process of the shield reaching the gate type emergency safety device:

[0017] Before the arrival of the shield, re-measure the axis of the shield to ensure that the deviation of the axis of the shield is within the design range, which is a prerequisite for construction.

[0018] After the re-measurement of the shield axis is completed, the shield is installed on site to reach the ram-type emergency safety device.

[0019] see figure 1 , figure 2 , image 3 , First fix the gate frame 1 and the transition flange 2 into a whole with bolts, and then weld and fix it with the embedded steel hole ring 6 of the hole door; then install the gate sealing strips 41 at the corresponding peripheral positions of the left and right gates 3 and 4. After the shield machine enters the reinforcement area, the construction is carried out according to the normal process, that is, the reinforcement soil in the tunnel door is first cut away, and then the tunnel is imple...

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PUM

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Abstract

The invention relates to a shield arrival gate plate type emergency safety device, which comprises a framework, a left gate, a right gate and an upper cover plate, wherein the framework and a steel tunnel ring embedded in a tunnel portal are connected into a whole through a transition flange; sealing rubber strips are arranged at the periphery of the left gate and separably arranged on the left side of the framework; sealing rubber strips are arranged at the periphery of the right gate and separably arranged on the right side of the framework; the upper cover is separably arranged on the upper edge of the framework; and after the left gate, the right gate and the upper cover plate are arranged in place, the whole device forms a closed space. In the device, due to the adoption of a mode of sealing the gates, phenomena such as water leakage, mud leakage and the like during shield arrival are controlled actively to fulfill the aim of reducing risks. Moreover, the device adopts a pre-fabricated structure, is low in construction cost and convenient to disassemble and install, can be recycled, and is applicable for shield tunneling engineering in any forms.

Description

technical field [0001] The invention belongs to the technical field of building tunnel engineering construction, and relates to a shield reaching gate type emergency safety device. Background technique [0002] Due to its high degree of mechanization, fast project progress, strong safety, good construction quality, less impact on the surrounding environment, and no impact on ground traffic, the shield method has become one of the main methods for tunnel construction in soft soil areas. In general, shield tunneling projects must build working wells at both ends of the tunnel for shield start and shield arrival. The shield completes the tunnel excavation and enters the shield through the circular hole reserved on the receiving well wall. The process of constructing a receiving well is called shield arrival. Affected by factors such as the measurement error of the shield axis and the construction accuracy, in order to ensure the smooth arrival of the shield, the diameter of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/12
Inventor 周文波段创峰吴惠明顾春华张冠军郑宜枫滕丽邓喜顾沉颖王强华赵燕鹏张露根
Owner SHANGHAI TUNNEL ENG CO LTD