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                收稿日期:2021-08-09
                                                
                                                    
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                                                2021年06期
                                            
GAO Yingui, KONG Wanjun, CHEN Yongchun, et al. Study on the failure characteristics of the bottom slate layer in the working face of fully mechanized caving in ultra-thick coal seam[J]. Energy Environmental Protection, 2021, 35(6): 68-75.