沿空掘巷底煤合理高度数值模拟研究  

Numerical Simulation of Reasonable Bottom Coal Height in Gob-side Entry Driving

作　　者：马全礼[1] 刘博[2] 刘浩[2] 朱道勇[2] 

机构地区：[1]山东科技大学,山东泰安271000 [2]山东科技大学矿业与安全工程学院,山东青岛266590

出　　处：《煤炭技术》2017年第4期15-16,共2页Coal Technology

摘　　要：针对3312工作面工程概况,采用数值模拟方法对沿空巷道底板受底煤高度及沿空小煤柱宽度的影响进行研究。分析沿空巷道底板的应力变化规律,确定合理的布置方式。研究结果表明:实体煤一侧巷道底板中的主应力比沿空小煤柱一侧大,实体煤一侧巷道底鼓或产生底板冲击的可能性将比沿空小煤柱一侧大,底煤厚度越大,这种差异越明显。In view of the project profile of 3312 face, the interaction effect between bottom coal height and coal pillar width in roadway floor of gob-side entry driving was studied based on the numerical simulation method. To analyze the stress variation law of the floor along the roadway driving gob, and to determine the reasonable arrangement mode. The results show that the entity coal side floor of roadway in principal stress is bigger than the gob-side of coal pillar, the entity coal side of the possibility of a floor impact or floor heave of roadway will be bigger than the gob-side of coal pillar. The thicker the bottom coal, the more obvious differences.

关 键 词：沿空掘巷 底煤高度 应力分布 

分 类 号：TD322[矿业工程—矿井建设]