上分层煤柱下的下分层综放开采技术实践与分析

文章通过上分层留设煤柱对下分层开采时的压力传递作了理论分析。采取周期来压前人工爆破煤柱和加强支架支护质量的措施，使用ZF-4600轻型低放支架开采取得了良好的经济效益。为其他下分层边角煤的开采提供了借鉴经验。

Practice and Analyse of the Lower Upper coal Post with Layers Heddle down with Layers puts

This paper analyzed through on lamination supposes time the rovide draw experience, come the manpower to detonate coal post and to reinforce holder economic effect, use ZF-4600 light put in a holder low exploit have got the fine rgin coal with layers other shoring mass measuer in the pressure front adopting a period