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| Retrieving surface movement and deformation induced by coal mining based on a single D-InSAR pair |
| WANG Lei1，2，ZHANG Xianni1 |
(1. School of Geodesy and Geomatics，Anhui University of Science and Technology，Huainan，Anhui 232001，China；
2. State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology，Shandong University of Science and Technology，Qingdao，Shandong 266590，China) |
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Abstract Current D-InSAR technology cannot fully survey the surface movement and deformation caused by the coal mining. To overcome the weakness，a method of extracting the movement and deformation from a single D-InSAR pair based on the integrated means of theoretical derivation and simulation experiments was proposed. A calculation model of the tilt，horizontal movement，curvature and horizontal deformation in any direction for all pixels by combining the subsidence of the horizontal and gently inclined coal seams and D-InSAR technology was established. The errors of tilt calculation in North-south and east-west directions are ±0.03 mm/m and ±0.02 mm/m respectively. The errors of horizontal movement calculation in north-south and east-west directions are ±1.6 mm and ±1.3 mm respectively. The errors of horizontal deformation calculation in north-south and east-west direction are ±0.04 mm/m and ±0.03 mm/m respectively. The errors of curvature deformation calculation in north-south and east-west directions are ±0.001 mm/m2 and ±0.001 mm/m2 respectively. During the period of 05-01-2012 to16-01-2012，the surface movement and deformation in north-south and east-west directions caused by the mining at workface 9310 in Nantun coal mine were calculated by using the retrieving model of movement and deformation.
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2017, Vol. 36 
