The compound roof fall accident of the individualhydraulicprop face is analyzed. The accident mechanization and prevention method are pointed.
对单体支柱工作面复合型顶板推垮型事故进行了分析，提出了事故发生的机理和预防办法。
2
Using individualhydraulicprop in thin coal seam face is better than the others in the aspect of support strength, premary supporting force, shrink amount and safety.
The article introduces the shortwall mining method along strike in medium-thickness seam with great dip angle, which is based on individualhydraulicprop and has brought great economic effect.