摘要
采用颗粒流方法对矿岩的自然崩落规律进行数值模拟计算,提出在颗粒模型中确定细观接触力学参数及模拟初始地应力的方法。在此基础上以某矿区为例,计算矿岩在崩落过程中的裂纹扩展及接触力分布情况,其计算结果对于崩落放矿过程中的力学机制分析、放矿方案选择、矿岩崩落速度预测等方面具有一定的指导意义。对于采用颗粒流方法研究矿岩崩落规律机制提供了思路与方法。
Numerical simulation of natural caving is conducted from meso-mechanics view through particle on the basis of method(PFM). A method is proposed to calibrate the parameters for the meso-mechanical model from meso-mechanics. The technique for initial stress field is also recommended. The proposed scheme has been applied to study the rupture evolution and contact force distribution after caving process at a mine in China. It will be helpful for research on caving in view of micro-mechanics.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2007年第S2期4202-4207,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大研究计划项目(90715042)
关键词
采矿工程
颗粒流
崩落
细观力学
mining engineering
particle flow method(PFM)
caving
meso-mechanics
