近距离煤层联合开采工作面合理错距研究  

Reasonable Staggered Distance Research on Combined Mining of Closed-Distance Coal Seams

作　　者：朱恒忠[1,2] 刘萍[1,2] 周学良[3] 李树建[1,2] 

机构地区：[1]贵州大学矿业学院,贵阳550025 [2]贵州省非金属矿产资源综合利用重点实验室,贵阳550025 [3]河南理工大学能源科学与工程学院,河南焦作454000

出　　处：《煤炭技术》2015年第1期11-14,共4页Coal Technology

基　　金：贵州省科学技术基金项目(黔科合J字【2011】2011号)

摘　　要：为确定近距离煤层联合开采合理错距,以某矿近距离工作面为工程背景,采用理论分析、数值模拟进行研究。研究表明:运用稳压区与减压区理论对联合开采合理错距进行计算,得出合理错距分别为38.9-43.9 m、21.9-33.9 m。采用FLAC3D数值模拟分析了垂直应力及位移演化特征、应力参数变化特征,得出合理错距为40 m,31118工作面超前122210工作面联合开采。In order to determine reasonable staggered distance of closed-distance coal seams combined mining,taking one closed-distance coal seam mining face as engineering background,carrying on research by using theoretical analysis,numerical simulation. The research results showed that: apply reduced pressure zone theory and stabilizing pressure region theory,reasonable staggered distance is 38. 9-43. 9 m,21. 9-33. 9 m respectively. Using FLAC3 Dnumerical simulation analyze vertical stress and displacement evolutionary characteristic,stress parameters evolutionary characteristic,derive reasonable staggered distance is 40 m,31118 working face ahead of 122210 working face achieved combined mining.

关 键 词：近距离煤层联合开采 合理错距 FLAC3D数值模拟 

分 类 号：TD823.81[矿业工程—煤矿开采]