n.填塞；填塞物；捣固
This article stresses on designing, arrangement of boreholes concentrated charges, bar charges, selection of blasting parameters, tamping and initating circuits. 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。
