技术简介

放顶煤开采技术是在煤层底部布置一个采高2~3m的综采工作面，使用专用的放顶煤支架，用常规方法进行开采，同时利用矿山压力或辅助以人工弱化措施(如爆破作业、注水 软化)使放顶煤支架上方的顶煤破碎成散体。

Introduction

The carving mining is to set up a comprehensive mining face with a mining height of 2-3 m at the bottom otthe coal seam, using special releasing brackets and mining by conventional methods, while using mine pressureor supplementary artificial weakening measures (such as blasting operations, water iniection softening) to breakthe top coal above the releasing brackets into loose bodies.