Shi, Xu-dong, Feng, Guo-rui, Bai, Jin-wen, Zhu, Chun, Wang, Shan-yong, Wang, Kai, Cui, Bo-qiang, Song, Cheng. Zhongnan Daxue,Central South University; 2023. Brazil splitting characteristics of coal-backfilling composite structure with different interface angles: Insights from laboratory experiment and numerical simulation.