Numerical Simulation on Failure Mechanism and Influencing Factors of the Coal Pillar
Pillar failure is an important rock mechanics increasing the coal recovery ratio. In the paper, starting from the mining need of the Halagou mine, according to the condition of the existing strata and production technology, a mechanical model was set up by proper simplification, and the failure process and influencing factors of the pillar was studied by using a RFPA2D code. Particularly, the deformation field, acoustic emission and evolving characteristic of stress field were analyzed. Meanwhile, the effect of different ratio of width to height on the ultimate bearing ability and roof-control ability was clarified, which can provide reference for a safe and economical pillar design. Furthermore, the numerical simulation result can guide to design other coal pillar in similar mining condition.
coal pillar failure mechanism influencing factor numerical simulation
HUANG Mingli WANG Fei ZHANG Baoan
School of Civil Engineering & Architecture, Beijing Jiaotong University, Beijing 100044, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
116-121
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）