System for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area
A technology of relative displacement and oil and gas pipelines, which is applied in pipeline systems, mining equipment, mining equipment, etc., can solve the problems of unseen mined-out area pipe soil, etc., and achieve the effect of reducing construction risks and ensuring safe operation
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[0059] Embodiment. This example is an experimental method and system, and its constitution is as Figure 1-Figure 6 shown. The test was carried out in a goaf subsidence area with mining depth ratio of 10, mining length of 15m, pipeline buried depth of 3m and pipeline length of 130m. The diameter of the pipeline is 168mm, the wall thickness is 6mm, and the steel grade is L245.
[0060] The overall composition of the pipe-soil relative displacement monitoring system for oil and gas pipelines in the goaf subsidence area is as follows: figure 1 shown. Install the pipe-soil relative displacement sensor a3 on the monitoring section of the oil and gas pipeline a2 in the goaf subsidence area 1, and then connect the optical cable a5 leading to the monitoring station through the optical fiber junction box a4. In the monitoring station, the optical cable a5 is connected to the optical switch 6 , the optical switch 6 is connected to the fiber grating demodulator 7, the fiber grating dem...
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