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An Application Of InSAR Technology In Ground Subsidence Monitoring In Huainan Coal-Mining Area

Posted on:2013-08-24Degree:MasterType:Thesis
Country:ChinaCandidate:W Q LiuFull Text:PDF
GTID:2230330377460601Subject:Geological Engineering
Abstract/Summary:PDF Full Text Request
The monitoring and remediation of coalmining area ground subsidence is animportant component in exploiting and sustainable development of coal-miningareas. This paper studied the application of D-InSAR technology in the monitoringin the coalmining area ground subsidence:1. Basic theory and data processing procedure of terrain data extraction usingInSAR and the mornitoring of terrain ground deformation using D-InSAR.2. The procedure of DORIS differentia interferometry processing: imageregistration, flat-earth effect removal, phase unwrapping, geocoding, deformationdiagram generation, and the factors affecting the accuracy of D-InSAR.3. Taking the subsidence in Huainan coalmining area as the object, usingENVISAT ASAR data, utilizing Two-pass theory in DORIS, we studied theapplication of D-InSAR technology.Taking4images of ENVISAT ASAR data in Band C as the base, this paperchose2images of better coherency, excluding the two affected by vegetation.Thesubsidence data during Dec.1,2009and Mar.16,2010was obtained throughdifferentia interferometry processing. The result was showed in deformationdiagram, profile map and3D map after post processing, taking into consideration ofseeper area. During this period, the actual average subsidence rate in Huainancoalmining area is1mm/d, with the maximum rate of1.67mm/d, matching the levelof D-InSAR result.The result shows that D-InSAR is an effective and rapid technology in themonitoring in coalmining area ground subsidence, and could meet the demand ofthe sustainable development of the mining area.
Keywords/Search Tags:InSAR, D-InSAR, coalmining area ground subsidence, maximum subsidence, subsidence rate, seeper area
PDF Full Text Request
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