Influence Law of Interbedded Strata and Their Collapse on the Mining of Extremely Thick Coal Seam under Goaf

by Chunxu Ji, Yongkang Yang, Xingyun Guo, Tianhe Kang, Zefeng Guo
Published 2019-01-01

Effect of Mining Thickness on Overburden Movement and Underground Pressure Characteristics for Extrathick Coal Seam by Sublevel Caving with High Bottom Cutting Height

by Yongkang Yang, Yanrong Ma, Chunxu Ji, Tianhe Kang, Xingyun Guo
Published 2018-01-01

A topological photonic crystal with ultra wide dual bandwidth

by Xiaofang Xu, Xingyun Guo, Shuangshuang Mu, Hao Zhang, Jingyu Huang
Published 2021-12-01