Online monitoring method for tunnel internal pipeline

A technology for tunnels and pipelines, applied in pipeline systems, measuring devices, instruments, etc., can solve problems such as pipeline monitoring in unfavorable geological areas, tunnel body deformation, natural gas leakage, etc., and achieve the effect of simple and feasible monitoring methods and convenient engineering applications

Active Publication Date: 2015-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the published existing technologies, there are technologies and methods such as tunnel body deformation monitoring, pipeline monitoring in unfavorable geological areas, and natural gas leakage monitoring in open space tunnels. There is no monitoring technology for pipelines in tunnels, especially rivers crossing tunnels.

Method used

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  • Online monitoring method for tunnel internal pipeline
  • Online monitoring method for tunnel internal pipeline

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example 1

[0024] Example 1: The present invention will be further described in conjunction with the accompanying drawings.

[0025] The example is the application example of the present invention in the "inclined shaft+level roadway+shaft" tunnel. like figure 1 As shown, a pipeline 1 is laid in a tunnel 2 , and the pipeline 1 is mounted on a series of continuous supports 4 via pipe clips 3 . At the deformation-sensitive part of the pipeline 1 (such as the outlet elbow of the inclined shaft 13 of the tunnel 2), a pipeline strain monitor 5 is installed, which consists of three strain gauges installed at intervals of 90° from the top to the bottom of the pipeline 1 (to install three A strain sensor as an example) to measure the axial strain of the pipe 1.

[0026] In the middle part of the tunnel 14 where the pipeline 1 is located at the bottom of the tunnel 2, a pipeline and ambient temperature monitor 6 is installed. There are two temperature sensors in the monitor, and the temperature...

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Abstract

The invention discloses an online monitoring method for a tunnel internal pipeline. The method comprises the step that a pipeline strain monitoring portion, a pipeline and environment temperature monitoring portion, a support displacement monitoring portion, a pipe clamp pressure monitoring portion and a remote control portion are included; the pipeline strain monitoring portion is used for measuring axial strain of the pipeline; the pipeline and environment temperature monitoring portion is used for measuring running temperature of the pipeline and environment temperature inside a tunnel; the support displacement monitoring portion is used for measuring relative displacement between a support bottom plate and a tunnel ground foundation; and the pipe clamp pressure monitoring portion is used for monitoring pipe clamp pressure changes. The online monitoring method can achieve continuous monitoring of the tunnel internal pipeline and transmits safety conditions of the tunnel internal pipeline, the support and the pipe clamp to a remote analysis terminal in real time. The method facilitates engineering application, and the safety management level of a tunnel penetrating pipeline can be improved.

Description

technical field [0001] The invention relates to an online monitoring method for pipelines in tunnels, in particular to an online safety monitoring method for pipelines in tunnels crossed by rivers, and belongs to the technical field of pipeline safety management. Background technique [0002] Tunnels are a major way for long-distance pipelines to cross large rivers. As the construction of long-distance oil and gas pipelines in various countries in the world continues to increase, projects for pipelines to cross large rivers are increasing. At present, there are mainly two methods of drilling and blasting tunnels and shield tunnels for river crossing tunnels. + Shaft" in three forms. Oil and gas pipelines are usually installed in a fixed way with continuous low supports. Due to the closed and limited space of the underwater tunnel, there may be problems such as water seepage or water accumulation during long-term use. It is very difficult to inspect and overhaul the pipelin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/00G01D21/02
Inventor 王晓霖阮宗琳帅健吕高峰李明赵巍
Owner CHINA PETROLEUM & CHEM CORP
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