摘要
在重点模拟大采高条件下覆岩低抗拉特性的基础上，建立了“大采高ＦＥＭ－ＮＴＡ耦合模型”．选择了合适的屈服准则、流动法则及应力应变本构关系，综合优选输入参数，于淮南矿务局新集矿实施了该“耦合模型”．预测裂采比为１０．６０～１０．８５倍．经钻探验证，取得了较为理想的预测精度．
A FEM NTA coupling model is set up for simulation of mining conditions at great mining height with an overlying rocks of low tensile strength.The proper yielding criterion,the rules of flowing,constructive relation between stress and strain,as well as optimization of input parameters are made.This model was applied in Xinji Mine in Huainan.The ratio of the height of the fractured zone to the mining height was predicted to be in the range from 10.60 to 10.86.The accuracy of prediction was ideal which was proved by drilling data.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1997年第4期375-379,共5页
Journal of China Coal Society
基金
煤炭科学基金
关键词
耦合模型
导水裂隙带
岩石应力
采煤
综放开采
great mining height,coupling model,ratio of the height of the fractured zone to the mining height,low tensile strength property
