摘要
对于难爆岩体，采用三角形布孔斜线起爆时，适宜用台阶爆破漏斗试验，根据等阻力自由面原理确定炮孔布置参数。同时炮孔堵塞长度控制在２０倍孔径和采用较小的排间微差间隔时间，使得爆破块度均匀且大块、根底少，后冲小，延米爆破量较大，对周围环境无危害。
In the case of triangular hole,oblique line detonation of difficult rock blasting,it is suitable to use bench blasting crater test for determining hole setting parameter according to the principle of equal-resistance freedom face.Meanwhile,length of stemming is controlled at 20 times of hole diameter with less millisecond interval time between rows,thus getting larger fragmentation degree,less tight,smaller backrock and larger running water amount,no harm to environment.
出处
《化工矿物与加工》
CAS
1998年第6期16-19,共4页
Industrial Minerals & Processing
关键词
露天台阶
三角形布孔
斜线起爆
爆破
Open-pit bench,Triangular hole layout oblique line detonation,Equal-resistance freedom face.
