Plastic Damage of the Surrounding Rock under the Influence of Confined Water Pressure and Mining Disturbance
Simulated rock stress and deformation characteristics in influence of mining disturbances,water pressure and crustal stress by use of Comsol4.2a the multi-physics coupling finite element simulation software.The results showed that:(1)the water pressure is fixed conditions,the plastic damage scope in stress concentration zone where was formed by mining disturbance is were greater than the mining floor,and with an extension of the scope of mining,the scope of plastic failure zone in the rock surrounding which including the vertical and horizontal was increased;(2)Stope width is fixed conditions,with the water pressure increases,resulting in the surrounding rock mechanical strength decrease,As rock water pressure increases,resulting in the surrounding rock mechanical strength decrease,and increase the scope of the plastic collapse and plastic damage within the fault zone intensified.
fluid-solid coupling deformation stress comsol
Chunhu Zhao
Xian Research Institute of China Coal Technology & Engineering Group corp XianYanta Road(N)52,Xian city,Shanxi Province China 710054
国际会议
北京
英文
795-802
2012-10-15（万方平台首次上网日期，不代表论文的发表时间）