宽孔距小抵抗线深孔爆破在面板堆石坝石料开采中的应用

在义乌卫星水库面板堆石坝工程中 ,成功地运用宽孔距、小抵抗线深孔爆破开采坝料。通过选择合理的孔网参数、炸药单耗 ,并控制单响药量 ,使爆堆成形、破碎块度及安全都达到了设计要求。文中就宽孔距、小抵抗线深孔爆破开采坝料提出了作者的认识和体会

APPLICATION OF DEEP-HOLE BLASTING WITH A LIGHT BURDEN AND LARGE HOLE-SPACING IN EXPLOITATION OF ROCK MATERIAL FOR EMBANKMENT OF CONCRETE FACE ROCKFILL DAM

In the project of concrete face rockfill dam for Weixing Reservoir in Yiwu City,the deep hole blasting with a light burden and large hole spacing has been successfully applied to quarry for embankment By selecting reasonable hole pattern parameters and powder factor and controlling the charge weight per delay interval,the broken pile shaping,fragmentation and blasting safety are made to be in line with designing demands In this paper,author's knowledge and experience are presented in regard to the exploitation of embankment materials by the deephole blasting with a light burden and large hole spacing