Modeling the Speed‐Induced Key Block Motion and Support Resistance in Longwall Mining With a Multilayer Hard Roof: Insights From the Xiaojihan Coal Mine. - Gao, Hui; Duan, Xiaopeng; Wang, Xufeng; Xie, Yuanman; Liu, Enqiang; Chen, Xuyang; Qian, Chenlong; Mishra, Pramita (Geofluids, 2026)