摘要
通过对现场实测数据的分析,提出要改善单体支柱工作面的技术经济效益,应合理选择工作面支护强度及支护密度。在此基础上再根据采高进行验算,重新选择支柱系列或调整支护密度。
To scientifically control The roof of working faces sup-ported with individual props, the most important is to determine the rational mean load density of the face according tothe critical resistance of the support-surrounding rock struc-ture. In light of this, a formula for determining the settingload density P_(oH) of the face supported with individual propsand the rated mean load density P_H has been developed.Thereby methods were derived for calculating the settingload and rated yield load of the hydraulic individual propsunder given mean load density, and for rationally selectingthe support density according to the necessary mean loaddensity, the dynamic state of roof and the permitted exposedarea of roof.
出处
《矿山压力与顶板管理》
1991年第4期49-52,70-73,共4页
Ground Pressure and Strata Control
