System for monitoring oil-gas pipeline in mining subsidence area and constructing method thereof

A technology for oil and gas pipelines and monitoring systems, which is applied in pipeline systems, measuring devices, and optical devices, and can solve problems such as optical fiber grating sensing that has not been seen

Active Publication Date: 2012-02-08
PIPECHINA SOUTH CHINA CO
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Problems solved by technology

[0018] Due to these advantages, in the field of geotechnical engineering, fiber grating sensors are easy to embed in rock and soil for high-resolution and wide-range measurement of internal strain and temperature. The technical advantages are very obvious, especially in the

Method used

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  • System for monitoring oil-gas pipeline in mining subsidence area and constructing method thereof
  • System for monitoring oil-gas pipeline in mining subsidence area and constructing method thereof
  • System for monitoring oil-gas pipeline in mining subsidence area and constructing method thereof

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Example Embodiment

[0088] Example. This example is an experimental method and system, and its composition is as Figure 1-Figure 10 Shown. A test was conducted on a mined-out collapse area with a mining depth of 10, a mining length of 15m, a pipeline buried depth of 3m, and a pipeline length of 130m. The diameter of the pipe is 168mm, the wall thickness is 6mm, and the steel grade is L245.

[0089] Oil and gas pipeline monitoring system in goaf subsidence area

[0090] The system is divided into on-site acquisition and launching system and remote receiving and analysis system, which specifically includes pipe strain monitoring device, pipe-soil relative displacement monitoring device, horizontal deformation monitoring device in the goaf collapse area, on-site monitoring station, and office receiving terminal (host computer) .

[0091] The overall composition of the oil and gas pipeline monitoring system in the goaf subsidence area is as follows figure 1 Shown. Install the fiber grating strain senso...

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Abstract

The invention discloses a system for monitoring an oil-gas pipeline in a mining subsidence area and a constructing method thereof. The system comprises a pipe body strain monitoring device, a pipe-soil relative displacement monitoring device and a mining subsidence area horizontal deformation monitoring device; a fiber grating strain sensor a (3) and a pipe-soil relative displacement sensor a (4)are arranged on the monitoring section of an oil-gas pipeline a (2) of a mining subsidence area (1); sensors on every section are connected in series by fusing, and are connected with an optical cable a (7) through a fiber junction box a (6); a fiber grating sensing network a (5) is arranged on the top of the pipeline a (2), and is connected with the optical cable a (7) through the fiber junctionbox a (6); the optical cable a (7) is connected with an optical switch (8); the optical switch (8) is connected with a fiber grating demodulator (9); the demodulator (9) is connected with a lower computer (10); the output of the lower computer (10) is connected with a wireless communication module a (11); and the output of a wireless communication module b (12) is connected with an upper computer(13).

Description

technical field [0001] The invention relates to an oil and gas pipeline monitoring system in a goaf subsidence area based on optical fiber grating sensing technology and a construction method thereof, and relates to the technical fields of stress measurement, temperature measurement, similar linear dimension measurement, and pipeline systems. Background technique [0002] The space formed after the underground mine is mined is called the goaf. After the underground mineral layer is mined, the upper rock layer loses its support, the balance condition is destroyed, and then it bends and collapses, so that the surface sinks and deforms, causing the surface to subside and form a depression. With the continuous expansion of the goaf, the depression continues to develop and form the goaf subsidence area, which will cause damage to the above-ground or underground buildings (structures). Goaf subsidence disaster is one of the main forms of geological disasters that cause loss of hu...

Claims

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Application Information

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IPC IPC(8): F17D5/00G01B11/16G01B11/02
Inventor 马云宾吴张中陈朋超孙异韩冰荆宏远刘建平邱红辉杨喜良
Owner PIPECHINA SOUTH CHINA CO
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