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Construction method of protection device for underground pipeline during shield excavation

A technology for underground pipelines and protection devices, applied in infrastructure engineering, artificial islands, water conservancy projects, etc., can solve problems such as inability to directly reflect pipeline settlement, inability to adjust pipelines in real time, poor control of grouting pressure, etc., and achieve simple production , save the cost of occupying the road, and the effect of convenient operation

Active Publication Date: 2016-01-13
SUBWAY ENG CO LTD OF CHINA RAILWAY 16TH CONSTR BUREAU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the traditional pipeline protection method are: 1) the ground grouting occupies the construction road and affects the traffic; For pressured underground pipelines, such as gas pipelines, water pipes, etc., if the drilling is not accurate, or the grouting pressure is not well controlled, there will be a great safety risk
3) Ground grouting is generally carried out according to the ground surface settlement monitored on the ground, but the ground surface settlement cannot directly reflect the settlement of the pipeline, and the pipeline cannot be adjusted in real time

Method used

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  • Construction method of protection device for underground pipeline during shield excavation
  • Construction method of protection device for underground pipeline during shield excavation

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Embodiment Construction

[0022] like Figure 1-2 As shown, a protective device for underground pipelines during shield excavation described in the embodiment of the present invention, during production, the exposed Φ50mm grouted steel pipe 6 is pre-processed with a 15cm threaded thread by a threading machine, and the top thread 9 is placed on the threaded thread jacket. , Add sleeve pipe 8 above jackscrew 9. The top of the exposed Φ50mm grouting steel pipe 6 adopts a Φ50mm variable Φ20mm reducing joint 11 .

[0023] The protective device for underground pipelines during shield tunneling, its detailed construction steps are as follows:

[0024] (1) Construction preparation: Before construction, communicate with the property right unit of the underground pipeline 3 in time, carefully check the location of the underground pipeline 3 with geological radar and pipeline detectors, mark it with red paint on site, and measure other areas within the grouting range. Pipelines, such as sewer pipes, communicati...

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Abstract

The invention relates to a protection device and a construction method for an underground pipeline in shield driving. The protection device comprises a steel plate arranged on a road surface, the underground pipeline is arranged below the steel plate, soil retaining plate walls are arranged on two sides of the lower surface of the steel plate, a plurality of square timbers are supported between the two soil retaining plate walls, a plurality of grouting steel pipes are uniformly and perpendicularly arranged below the steel plate, a steel wire rope is connected among the grouting steel pipes, and the underground pipeline is suspended on the steel wire rope. The construction method includes the steps: pay-off positioning; grooving construction; grouting steel pipe layout; grouting and the like. The protection device has the advantages that road passage is unaffected in the daytime, the influence on a road is decreased, road occupying expenses are saved, the settlement condition of the construction process can be directly observed by grooving, pipeline protection is adjusted in real time, the protection device is wide in material source, simple to manufacture, convenient to operate and high in pipeline construction safety protection factor, and enterprises can achieve high economic benefits.

Description

technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a protection device and a construction method for underground pipelines during shield excavation. Background technique [0002] Shield excavation is generally an underground construction in a bustling city. During the excavation process, many very intricate pipelines will be encountered, which need to be protected, especially the pressured gas pipes and water pipes. If the protection measures are not appropriate, the There are many unforeseen risks. The traditional pipeline protection method is: use ground grouting for protection. The disadvantages of the traditional pipeline protection method are: 1) the ground grouting occupies the construction road and affects the traffic; Especially for pressured underground pipelines, such as gas pipelines, water pipes, etc., if the drilling is not accurate, or the grouting pressure is not well controlled, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/045E02D27/10E02D27/48
Inventor 李建旺陈建汪春生周明祥郭秀琴吕曙光田先玉董治国李媛
Owner SUBWAY ENG CO LTD OF CHINA RAILWAY 16TH CONSTR BUREAU
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