Double gas warehouse rectification air pressure balance tube push bench

A technology of air pressure balance and pipe jacking machine, which is applied to mining equipment, earthwork drilling, tunnels, etc. It can solve the problems of cutting small obstacles to the surrounding soil, hidden dangers to personnel safety, and lack of strength of the grid to speed up construction efficiency. , Improve safety and improve work efficiency

Pending Publication Date: 2018-12-07
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Like the traditional air pressure balanced pipe jacking machine, this device still has the following problems: in the complex soil layer with poor stability, if the soil collapses into the working surface and the air valve is blocked, there is a great safety hazard for personnel; In complex strata (weak stratum, hard stratum or interlaced two strata), pipe jacking machine heads ar

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  • Double gas warehouse rectification air pressure balance tube push bench
  • Double gas warehouse rectification air pressure balance tube push bench
  • Double gas warehouse rectification air pressure balance tube push bench

Examples

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example

[0042] The engineering example is Xiamen Gaoji Seawall Raw Water Pipeline Relocation Project. The sea-crossing water pipes are two DN2200 steel pipes constructed by pipe jacking method. The pipe wall thickness is 20mm, and the total length of a single pipe is about 1645m. The entire sea-crossing pipeline is located in the sea area between Gaoji Seawall and Xiamen Bridge. The central elevation of the pipeline is about -8.50m~-11.86m~-9.65m. It mainly passes through the residual sandy clayey soil containing small boulders and some bedrock. layer, silt layer, and medium-coarse sand layer. In order to prevent the sudden air leakage that the pipe jacking often encounters in the quicksand layer in this project, resulting in soil collapse, the landslide enters the working surface and blocks the closing of the air pressure valve, which threatens the safety of the construction workers, a function is used to protect the safety of the excavation surface Double air chamber, strong deviati...

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Abstract

The invention provides a double gas warehouse rectification air pressure balance tube push bench. The double gas warehouse rectification air pressure balance tube push bench comprises a decompressionbin connected with the rear end of a working bin, a standby decompression bin connected with the rear end of the decompression bin, a first pneumatic door which is arranged between the decompression bin and the working bin and used for making the decompression bin and the working bin communicated and a second pneumatic door which is arranged between the standby decompression bin and the decompression bin and used for making the standby decompression bin and the decompression bin communicated. According to the double gas warehouse rectification air pressure balance tube push bench, when soil collapse occurs, operation personnel located in the working bin can be evacuated from the standby decompression bin to implement vacuum unloading, in this way, the safety of work of the operation personnel is improved, the operation personnel can better put their heart and soul into their work, and the work efficiency is improved. A tube push bench head can automatically forcibly conduct rectification and move along the preset axis.

Description

technical field [0001] The invention relates to an air pressure balanced pipe jacking machine, in particular to an air pressure balanced pipe jacking machine with double air chambers and strong deviation correction. Background technique [0002] As a construction method of underground excavation, pipe jacking construction has many advantages, such as small footprint; underground construction does not affect ground activities; when crossing obstacles such as railways, highways, rivers, and buildings, it can reduce the workload of demolition along the line; During the construction process, the existing pipelines and structures will not be damaged, and the normal use will not be affected; the construction will be noiseless and reduce environmental pollution along the line. Therefore, pipe jacking construction technology has been widely used in recent years. The laying of upper and lower sewers, gas, electric power, communication engineering, liquefied petroleum gas, natural ga...

Claims

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Application Information

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IPC IPC(8): E21D9/10
CPCE21D9/005E21D9/10
Inventor 甄亮廖晨聪陈锦剑
Owner SHANGHAI JIAO TONG UNIV
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