1. Cao J, Huang QX (2021) Regularity and control of overburden and surface fractures in shallow-contiguous seams. Coal Geol Explor 49(4):213–220
2. Cao J, Gao B, Huang QX (2021) Mechanism of upward mixed crack propagation in longwall working face. Saf Coal Mines 52(12):188–193
3. Cheng ZH, Qi QX, Li HY, Zhang L, Liu XG (2016) Evolution of the superimposed mining induced stress-fissure field under extracting of close distance coal seam group. J China Coal Soc 41(2):367–375
4. Deng GD, Xie HP, Gao MZ, Li C, He ZQ (2020) Numerical simulation on the evolution of mining-induced fracture network in a coal seam and its overburden under the top coal caving method. Adv Civ Eng 2020
5. Guo LH, Cheng H, Peng SL, Fu BJ (2020) Study on evolution and subsidence fractal characteristics of overlying strata in thick loose layers and thin bedrocks. Saf Coal Min 51(9):59–64