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Method and system for monitoring and warning pipeline landslide surface displacement and method for constructing system

A technology of monitoring, early warning and construction method, which is applied to the measurement, alarm, and measuring device of the change force of the optical properties of the material when it is subjected to stress, can solve the problem that the monitoring result is difficult to quantitatively calculate the deformation, and achieve light weight. Low optical loss and high reliability

Active Publication Date: 2010-03-10
PIPECHINA SOUTH CHINA CO
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Problems solved by technology

The usual method is to select the structure of the landslide control project as the carrier, which is generally used in the effect monitoring of the landslide control project; another method is to select other existing structures on the landslide body (such as the ladder from top to bottom) as the carrier. Deformed carrier, this method is highly operable, but it is difficult to quantitatively calculate the deformation of the monitoring results

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  • Method and system for monitoring and warning pipeline landslide surface displacement and method for constructing system
  • Method and system for monitoring and warning pipeline landslide surface displacement and method for constructing system
  • Method and system for monitoring and warning pipeline landslide surface displacement and method for constructing system

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Embodiment Construction

[0081] Embodiment. This example is a test method and system, and it is tested on a slow-moving landslide body in the covering layer with a width of 300m, a landslide thickness of 29m, and the base covering section as the sliding surface. The surface displacement monitoring and early warning system of the pipeline landslide is as follows: figure 2 As shown, it is composed of a displacement monitoring device for the surface of the landslide, a monitoring device for the thrust of the landslide on the pipeline, a monitoring device for the strain of the pipeline, an on-site monitoring station, and a receiving terminal in the office. The ground beam strain fiber grating sensor 20 of the on-site landslide surface displacement monitoring device installed in the landslide in a certain structure, the soil pressure cell strain fiber grating sensor 4 of the landslide thrust monitoring device for the pipeline, and the pipe body strain of the pipeline strain monitoring device The output of...

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Abstract

The invention relates to a method and a system for monitoring and warning pipeline landslide surface displacement and a method for constructing the system. The monitoring is divided into three parts including landslide surface displacement monitoring, monitoring of thrust of landslide on a pipeline and pipeline strain monitoring. The outputs of a ground beam fiber Bragg grating sensor (20) of a landslide surface displacement monitoring device, an earth pressure cell fiber Bragg grating sensor (4) of a monitoring device of the thrust of the landslide on the pipeline and a pipe strain fiber Bragg grating sensor (3) of a pipeline strain monitoring device are sequentially connected in series with an automatic optical switch (6), a fiber Bragg grating demodulator (7) and a host computer (8) ofan on-site monitoring station respectively. The output of the host computer (8) is connected with a GPRS transmission module (9); and the input of an inferior computer (11) with the outputs of an annunciator (12) and a display is connected by a GPRS receiving module (10) in an office.

Description

technical field [0001] The invention relates to a monitoring and early warning method, system and system construction method for surface displacement monitoring of pipeline landslides based on optical fiber gratings. The invention relates to the technical field of stress measurement and pipeline system. Background technique [0002] Landslide refers to the overall movement of the rock and soil mass forming the slope under the action of gravity along with the shearing process on the weak surface of the lower part. Landslide disaster is one of the main forms of geological disasters that cause loss of human life and property. Long-distance oil or gas pipelines have a transportation distance of thousands of kilometers, crossing many geological and geomorphic units, and often inevitably pass through areas with complex geological conditions, such as mountainous areas and permafrost areas. Due to insufficient line selection or landslides induced by pipeline construction or earthq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/18G08B21/10G01B11/02G01L1/24G01B11/16
Inventor 郝建斌刘建平陈朋超荆宏远郭祎蔡永军
Owner PIPECHINA SOUTH CHINA CO
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