采煤简易支架使用现状与改进

THE CURRENT APPLICATION AND IMPROVEMENT OF SIMPLE COAL-CUTING SUPPORTS

近年来,简易支架在中小型煤矿得到广泛应用,本文介绍了几种典型支架的结构特点和应用情况,分析了支架使用中发生挤架、倒架的原因,设计了适合不稳定或中等稳定矿顶的简易支撑掩护式支架。图5,表2,参3。

Simple supports have been used widely recently. This paper introduced some kind of the typical constructure character of simple supports and it's application, analysised the squeeze and back motion of the supports, and also designed the chock-shield-type power support adapted for the low or middle stabilization roof. 5figs., 2tabs., 3refs.