分析了集中药室爆破时，爆破冲击波和应力波对药室附近岩体的破碎过程及应力波在自由面的反射作用。
The paper analysed the process of smashing rock near a explosion source by shock wave and stress wave and the reflecting action of stress wave on the free face.
针对这一情况，从药室爆破放顶充填采空区，从而达到分层崩落法采矿的护顶层要求。
Based on this case, through filling the gob area by means of chamber blasting, the requirement of protective top - layer for slicing and caving can be achieved.
论述了硐室爆破的设计方案，药室布置，集中药包，条形药包，爆破参数选择，装药填塞和起爆网路等。
This article stresses on designing, arrangement of bore holes concentrated charges, bar charges, selection of blasting parameters, tamping and initiating circuits.
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