Detecting and monitoring UCG subsidence with InSAR

doi:10.2172/1047778

GSTDTAP > 地球科学

DOI	10.2172/1047778
报告编号	LLNL-TR-541351
来源ID	OSTI ID: 1047778
	Detecting and monitoring UCG subsidence with InSAR
	Mellors, R J; Foxall, W; Yang, X
	2012-03-23
出版年	2012
页数	24
语种	英语
国家	美国
领域	地球科学
英文摘要	The use of interferometric synthetic aperture radar (InSAR) to measure surface subsidence caused by Underground Coal Gasification (UCG) is tested. InSAR is a remote sensing technique that uses Synthetic Aperture Radar images to make spatial images of surface deformation and may be deployed from satellite or an airplane. With current commercial satellite data, the technique works best in areas with little vegetation or farming activity. UCG subsidence is generally caused by roof collapse, which adversely affects UCG operations due to gas loss and is therefore important to monitor. Previous studies have demonstrated the usefulness of InSAR in measuring surface subsidence related to coal mining and surface deformation caused by a coal mining roof collapse in Crandall Canyon, Utah is imaged as a proof-of-concept. InSAR data is collected and processed over three known UCG operations including two pilot plants (Majuba, South Africa and Wulanchabu, China) and an operational plant (Angren, Uzbekistan). A clear f eature showing approximately 7 cm of subsidence is observed in the UCG field in Angren. Subsidence is not observed in the other two areas, which produce from deeper coal seams and processed a smaller volume. The results show that in some cases, InSAR is a useful tool to image UCG related subsidence. Data from newer satellites and improved algorithms will improve effectiveness.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5637
专题	地球科学
推荐引用方式 GB/T 7714	Mellors, R J,Foxall, W,Yang, X. Detecting and monitoring UCG subsidence with InSAR,2012.