title: Deformation failure characteristics of coal body and mining induced stress evolution law.
abstract: The results of the interaction between coal failure and mining pressure field evolution during mining are presented. Not only the mechanical model of stope and its relative structure division, but also the failure and behavior characteristic of coal body under different mining stages are built and demonstrated. Namely, the breaking arch and stress arch which influence the mining area are quantified calculated. A systematic method of stress field distribution is worked out. All this indicates that the pore distribution of coal body with different compressed volume has fractal character; it appears to be the linear relationship between propagation range of internal stress field and compressed volume of coal body and nonlinear relationship between the range of outburst coal mass and the number of pores which is influenced by mining pressure. The results provide theory reference for the research on the range of mining-induced stress and broken coal wall.
authors: State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ; Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, Shandong 250061, China ; Aalto University, 00076 Aalto, Finland.
authors: Zhijie
authors: Z
authors: Wen
authors: State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
authors: Guanglong
authors: 0000-0003-4004-8714
authors: G
authors: Qu
authors: State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
authors: Jinhao
authors: J
authors: Wen
authors: State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
authors: Yongkui
authors: Y
authors: Shi
authors: State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
authors: Chuanyang
authors: C
authors: Jia
mesh_terms: D003032:Coal Mining; D008962:Models, Theoretical; D013314:Stress, Mechanical