摘要
中深孔落矿是我国地下金属矿山应用较为广泛的落矿方法,但在应用时由于扇形布孔,炸药分布不均匀,爆破后容易产生大块,影响出矿效率。济南钢城矿业有限公司几年来在降低大块率方面做了一些尝试,取得了明显效果。
The midium-length hole blasting breakdown is widely used in underground metals mine of our country. In general, it is easy to produee large bloeks due to fan holes and explosive nonuniform distribution, and whieh influeneed mining effieieney. Some benefieial trials have been done in Jinan Steel City Mining Co., Ltd. for several years, and obvious result has been obtained.
出处
《中国矿山工程》
2005年第5期17-18,21,共3页
China Mine Engineering
关键词
中深孔
落矿
大块率
midium-length hole
breakdown
boulder yield
