In order to research the possibility of digital close-range photogrammetric surveying in small scale physical simulation experiment,physical model coinciding with engineering practice was constructed based on similar ...In order to research the possibility of digital close-range photogrammetric surveying in small scale physical simulation experiment,physical model coinciding with engineering practice was constructed based on similar theory.The datum processing method and surveying precision of digital close-range photogrammetric were analyzed.And the function relationship between overburden subsidence factor qr and the ratio z/H of stratum horizon z and mining depth H was researched.The results show that surveying points position mean error along horizontal direction is±0.131 mm and vertical direction is±0.192 mm.Therefore,multi-taking station cross direction digital close-range photogrammetric can completely satisfy the precision need of physical simulation experiment.And the empirical formula can be utilized to represent evolution law of stratum subsidence factor.展开更多
基金Projects(41101520,41071328,51074064)supported by the National Natural Science Foundation of China
文摘In order to research the possibility of digital close-range photogrammetric surveying in small scale physical simulation experiment,physical model coinciding with engineering practice was constructed based on similar theory.The datum processing method and surveying precision of digital close-range photogrammetric were analyzed.And the function relationship between overburden subsidence factor qr and the ratio z/H of stratum horizon z and mining depth H was researched.The results show that surveying points position mean error along horizontal direction is±0.131 mm and vertical direction is±0.192 mm.Therefore,multi-taking station cross direction digital close-range photogrammetric can completely satisfy the precision need of physical simulation experiment.And the empirical formula can be utilized to represent evolution law of stratum subsidence factor.
