UDEC simulation results show that the porosity of overburden rock fissure field in goaf and its curve is saddle-shaped.
UDEC模拟结果表明，采空区覆岩裂隙区域孔隙率曲线呈鞍状分布。
2
Aiming at the influence effects of roof stratum on rock burst, the research methods of physical simulation experiment in laboratory, UDEC 4.
针对顶板岩层对煤体冲击的影响作用机理，采用实验室物理模拟试验、UDEC 4。
3
This paper analyzes the surrounding rock characteristics of single shell lining only from the mechanical mechanism aspects using the discrete element software of UDEC.