两柱与四柱放顶煤液压支架架型及结构浅析

Brief Analysis of Type and Structures of Two-legged and Four-legged Top Coal Caving Hydraulic Powered Support

从支架整体受力、稳定性以及对顶、底板条件的适应能力等方面对两柱掩护式放顶煤支架与四柱支撑掩护式放顶煤支架进行对比分析,并针对不同综放工作面的实际使用及下井运输条件,提出合理的支架选型建议。

Gives a comparative analysis of the two - legged and four - legged top - coal caving hydraulic powered support from the aspects of total load, stability, adaption to roof and floor, etc.. It also gives some reasonable suggestions for selection of equipment selection to be used in different underground conditions of longwall top - coal caving faces with all kinds of underground transportation conditions.