Mined-out subsidence area soil horizontal deformation monitoring method and system thereof

A technology of horizontal deformation and collapsed areas, applied in the direction of measuring devices, optical devices, instruments, etc.

Active Publication Date: 2012-02-08
PIPECHINA SOUTH CHINA CO
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 o

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mined-out subsidence area soil horizontal deformation monitoring method and system thereof
  • Mined-out subsidence area soil horizontal deformation monitoring method and system thereof
  • Mined-out subsidence area soil horizontal deformation monitoring method and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0079] Embodiment. This example is an experimental method and system, and its constitution is as Figure 1-Figure 7 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.

[0080] The process flow of the real-time online monitoring method of soil horizontal deformation in goaf subsidence area based on fiber grating is as follows: figure 1 shown. After the wavelength signal collected by the sensor is demodulated and preprocessed at the on-site monitoring station, it is remotely transmitted to the off-site monitoring center. After receiving the data, the monitoring center further analyzes and processes the data through a specific algorithm to calculate the collapse of the goaf. The horizontal deformation changes, so as to judge the state stability of the soil strain change...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a mined-out subsidence area soil horizontal deformation monitoring method and a system thereof. A fiber grating sensing net a (3) real-timely monitors soil horizontal deformation above a pipeline a (2). Collected data is through an optical cable a (5), an optical switch (6), and then is demodulated and transmitted by a fiber grating demodulation device (7) to a lower computer (8). The lower computer (8) calls a self-written program, controls the optical switch (6) and the fiber grating demodulation device (7), and collects the data and carries out pretreatment to the data. The pretreated data is transmitted through a GPRS communication module a (9) and is received by the GPRS communication module b (10) to an upper computer (11). The upper computer (11) analyzes the soil horizontal deformation data and determines a stabilization state of the mined-out subsidence area soil and a safety state of the pipeline according to changes of a monitoring curve and a monitoring value.

Description

technical field [0001] The invention relates to a method and system for monitoring horizontal deformation of soil in a goaf subsidence area based on optical fiber grating sensing technology, 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 human life a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01B11/16G01B11/02
Inventor 吴张中马云宾郝建斌韩冰荆宏远刘建平谭东杰蔡永军杨喜良
Owner PIPECHINA SOUTH CHINA CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap