大采高支架工作阻力可用岩石自重法确定。
The working resistance of support of great mining height can be determined by the rock gravity.
研究表明：放顶煤开采、提高支架工作阻力可以减缓煤壁压力，煤体合理注水可以提高煤体黏聚力与抗剪强度，它们是防治极软煤层煤壁片帮的有效措施。
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
本文对该类支架的工作阻力、初撑力、支护高度等主要参数进行了分析计算，并对其主要结构进行了设计。
The main parameters of the hydraulic support, such as working resistance, setting load and support height, are analyzed and its main structures are design.
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