综放开采最大导水裂隙带高度的应力法预测  

PREDICTION OF MAXIMUM HEIGHT OF THE FRACTURED ZONE BY STRESSING METHOD FOR SUB LEVEL CAVING MINING

作　　者：桂和荣[1] 周庆富[2] 廖多荪[2] 康庆恩 范遵友 邹海[3] 

机构地区：[1]淮南矿业学院 [2]淮南市煤电总公司 [3]中国矿业大学

出　　处：《煤炭学报》1997年第4期375-379,共5页Journal of China Coal Society

基　　金：煤炭科学基金

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.

关 键 词：耦合模型 导水裂隙带 岩石应力 采煤 综放开采 

分 类 号：TD323[矿业工程—矿井建设] TD823.97