【摘要】 针对目前我国煤矿开采中炮采工艺存在的缺点,结合城郊煤矿的煤层特征,进行了爆破参数设计,应用微差爆破技术,并确定了合理的炮眼间距、装药量、起爆顺序等爆破参数,提高了炮采的单产、效益和块煤率,对提高企业的生产效益、改善安全状况有着现实的意义。更多还原

【Abstract】 Currently aim to shortcomings of coal mine blast in China,the combination of the suburban coal seam characteristics,has designed the blasting parameters,applying to millisecond blasting technique,and determining several parameters such as a reasonable embrasure distance charge sequence.It enhanced the yield of blasting mining the yield,efficiency,and the rate of lump coal,and it also have great partical signification in enhanceing the efficiency of production,in improveing the security situation.更多还原