Experimental study on the processes and influencing factors of coal pillar damage under immersion conditions

• Published in: Geosciences journal (Seoul, Korea) Vol. 29; no. 1; pp. 134 - 149
• Main Authors: Yuan, Huiqing, Xu, Zhimin, Sun, Yajun, Lu, Weining, Han, Yuhang, Xu, Xiangyu
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2025; Springer Nature B.V; 한국지질과학협의회
• Subjects: Acid mine water; Coal; Compressive strength; Damage; Design optimization; Disasters; Earth and Environmental Science; Earth Sciences; Immersion; Mechanical properties; Microcracks; Mine drainage; Permeability; Physical properties; Rocks; Shear strength; Submerging; Tensile strength; Underground mining; Water; Water inrush; Water resistance; 지질학; Immersion test; Coal pillar stability; Water–rock interaction; Damage mechanism; Damage coefficient

After mining, the abandoned underground space accumulates acidic mine water with high permeability and strong corrosivity, damaging the structure of adjacent boundary coal pillars and reducing their mechanical strength and water resistance, which can lead to water inrush disasters. This study invest...