多煤层重复采动导水裂隙带高度观测技术研究
王振荣,赵立钦,康健,等
Study on observing water flowing fracture zone hight of multiple coal seam repeated recovery
zhao liqinzhaoliqin
煤炭工程 . 2018, (12): 82 -85 .  DOI: 10.11799/ce201812022