| 水力增压爆破试验 |
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| 作者单位： | ;1.马鞍山矿山研究院爆破工程有限责任公司;2.金属矿山安全与健康国家重点实验室;3.中钢集团马鞍山矿山研究院有限公司;4.马钢(集团)控股有限公司南山矿业公司 |
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| 摘 要： | 在露天深孔爆破中,台阶上部矿岩大块较多,为改善台阶上部矿岩的破碎质量,提出了水力增压爆破技术,介绍了其作用机理、装药结构及技术要点,并进行了砂浆模型试验和现场工业试验,在水柱与填塞物之间放置超前压塞药包。试验结果表明:采用水力增压爆破可提高延米爆破量和炸药利用率,大块率降低了49.4%,爆破效果良好,该项技术对降低爆破粉尘亦具有良好效果。
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| 关 键 词： | 水力增压 装药结构 超前压塞药包 |
HYDRAULIC BOOSTING BLASTING TEST |
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| Abstract: | During the deep-hole blasting in open pit mine,the bulk of ore rock mainly appeare in the upper bench.In order to improve the broken quality of ore rock in the upper bench,the hydraulic boosting blasting technology was put forward.The technical points and construction of charge were introduced and mechanism was analyzed.Mortar model test and field test were conducted,and the pre-stemming charge was placed between the water column and stemming.The test statistics showed that hydraulic boosting blasting could raise the blast quantity per metre of blastholes and utilization ratio of explosive,and the boulder yield was reduced by 49.4%.This technology also could reduce blasting dust. |
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| Keywords: | Hydraulic boosting Construction of charge Pre-stemming charge |
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