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Device and method for preventing gushing of water-rich stratum and improving shield tunneling efficiency

A water-rich formation and gushing prevention technology, which is applied to mining equipment, earthwork drilling, mining equipment, etc., can solve problems such as shield machine flooding, tunnel collapse, prone ground subsidence, casualties, etc., to speed up dredging slag effect, reduce the workload of slag removal, and reduce the effect of cleaning time

Pending Publication Date: 2021-06-11
THE 5TH ENG OF THE THIRD ENG GROUP OF CHINA RAILWAY +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems that the shield machine is prone to ground subsidence, shield machine flooding, tunnel collapse, and casualty accidents during the construction of the shield machine through the water-rich stratum, it provides a device for preventing gushing in the water-rich stratum and improving the efficiency of shield tunneling. method

Method used

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  • Device and method for preventing gushing of water-rich stratum and improving shield tunneling efficiency
  • Device and method for preventing gushing of water-rich stratum and improving shield tunneling efficiency
  • Device and method for preventing gushing of water-rich stratum and improving shield tunneling efficiency

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Embodiment Construction

[0050] An anti-swelling shield tunneling device for water-rich formations, comprising a belt conveyor, a screw conveyor located above the belt conveyor, a water collection tank and a side row water collection tank located at the bottom of the belt conveyor.

[0051] A gushing-proof shield tunneling method in a water-rich stratum, comprising the following steps:

[0052] S1: Drainage in the soil silo to establish solid soil pressure

[0053] 1. After the assembly of the lower segment is completed, the mud and slag in the earth bin of the shield machine will be deposited to form solid soil pressure at the bottom of the earth bin. When the water content in the bin is high (accounting for 2 / 3), use the earth bin to separate Plate drain ball valve to discharge water,

[0054] 2. First open the 3 and 9 o'clock drainage ball valves to release water, discharge clear water or muddy water with less sludge content, reduce the water level in the soil bin, and then open the 5 and 7 o'cloc...

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Abstract

The invention discloses a device and method for preventing gushing of a water-rich stratum and improving shield tunneling efficiency, and belongs to the technical field of tunnel shield construction. The device and method can solve the problems that a shield tunneling machine is prone to surface collapse, the shield tunneling machine is flooded, a tunnel collapses, personnel casualty accidents and the like in the construction process of penetrating through the water-rich stratum. The device comprises a belt conveyor, a screw conveyor located above the belt conveyor and a water collecting tank and a side drainage water collecting tank which are located at the bottom of the belt conveyor; the tunneling method comprises the steps of water drainage in a soil bin, solid soil pressure establishment, soil bin muck improvement, shield tunneling machine propelling, spewing prevention and rapid pressure relief and drainage and slag dredging system starting; and meanwhile, muck and muddy water accumulated at the bottom of the shield tunneling machine and falling out of the belt conveyor are effectively prevented, manual regular cleaning is not needed, and the shield tunneling efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of tunnel shield construction, and in particular relates to a device and method for preventing gushing in water-rich strata and improving the efficiency of shield tunneling. Background technique [0002] In recent years, with the great development of domestic urban rail transit, the shield method has been widely used in rail construction because of its advantages of safety, high efficiency and wide adaptability. Due to its extensive stratum adaptability and strong rock-breaking ability, earth pressure balance shield has increasingly become the first choice for shield tunneling construction under various complex stratum conditions. However, in the construction of water-rich strata, due to the large water content in the stratum, the weathering of the rock strata during the shield machine's crossing process is prone to problems such as fragmentation and looseness. When the screw conveyor is not well sealed or t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/12E21D9/00E21F17/18
CPCE21D9/06E21D9/0607E21D9/0678E21D9/12E21D9/124E21D9/003E21F17/18
Inventor 刘国杰傅重阳朱传刚方治纲段久波赵山杰王文明宁轲李学飞张泽锋石林峰韦璋陈海波王小鹏刘俊李成俊杨中华杨体凯冯潇阳于闻灏
Owner THE 5TH ENG OF THE THIRD ENG GROUP OF CHINA RAILWAY
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