摘要
为了进一步研究全煤巷大断面围岩的稳定性 ,针对大宁矿在掘巷道的情况 ,采用薄板理论分析 ,确定了其巷道掘进的合理空顶距 ,为大宁煤矿煤巷围岩控制提供了理论依据 ;有利于大宁矿进一步发挥掘巷机械的效率 。
To study the stability of surrounding rock in coal entries,rational unsupported roof distance was obtained ty thin plate theory;which supplied the theoritical base for the surrounding rock control in Daning mine,helped to raise exacavation efficiency and insure safe production.
出处
《山西煤炭》
2003年第4期8-9,共2页
Shanxi Coal