This open access book is divided into seven chapters. Within those seven chapters, the WRI problems that may occur in coal mining environments were summarized, strength weakening of the rock and its micromechanism in WRI were analyzed, an accurate characterization method of pores and various minerals were proposed, the mechanical characteristics and damage mechanism of sandstone under long-term immersion were studied, the simulation methods of fluid solid coupling for water immersion weakening are proposed, and the feasibility of the simulation method is verified by simulating surrounding rock weakening in water filled fracture structure roadway and the failure analysis of residual coal pillar under the coupling of mining stress and water immersion. This book can provide guidance, experience and reference for scientists and engineers who work in mining engineering, civil engineering, and geotechnical engineering.
Introduction.- Strength weakening and its micromechanism in waterrock
interaction.- Accurate characterization method of pores and various
minerals.- Mechanical characteristics and damage mechanism of sandstone under
long-term immersion.- Fluid solid coupling simulation method for water
immersion weakening in coal mining.- Failure analysis of residual coal pillar
under the coupling of mining stress and water immersion.- Progressive failure
of roadways in a fault structure area with waterrich roofs.
Author Zhang Cun of the monograph is a professor and Ph.D. supervisor at the School of Energy and Mining Engineering, China University of Mining and Technology (Beijing). He is a recipient of the Excellent Doctoral Dissertation Award from the Chinese Society for Rock Mechanics and Engineering, an elected fellow of the International Association of Advanced Materials (IAAM), and a participant in the Youth Talent Lifting Project of the China Association for Science and Technology. He mainly engages in research on mine pressure and rock control, utilization of mine water resources, coal and gas simultaneous extraction, and reuse of abandoned mines. He has published over 200 papers, with more than 100 as the first author (or corresponding author), 10 of which are highly cited ESI papers. Furthermore, he has authored four monographs and has been the first inventor with over 10 authorized invention patents.
