[1]李顺波①,李泽华①,杨军②,等.矿岩分离露天爆破毫秒延时间隔研究[J].爆破器材,2019,48(03):55-58.[doi:10.3969/j.issn.1001-8352.2019.03.011]
　LI Shunbo,LI Zehua,YANG Jun,et al.Research on Millisecond Delay Interval of Open Blasting for Separation of Ore and Rock[J].EXPLOSIVE MATERIALS,2019,48(03):55-58.[doi:10.3969/j.issn.1001-8352.2019.03.011]
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矿岩分离露天爆破毫秒延时间隔研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
48
期数:
2019年03
页码:
55-58
栏目:
爆破技术
出版日期:
2019-05-20

文章信息/Info

Title:
Research on Millisecond Delay Interval of Open Blasting for Separation of Ore and Rock
文章编号:
5307
作者:
李顺波①; 李泽华①; 杨军②; 王洪强①; 余德运①
①北方爆破科技有限公司(北京,100089)
②北京理工大学爆炸科技与技术国家重点实验室(北京,100081)
Author(s):
LI Shunbo①;  LI Zehua①;  YANG Jun②;  WANG Hongqiang①;  YU Deyun①
①North Blasting Technology Co., Ltd. (Beijing, 100089)
②State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology (Beijing,100081)
关键词:
矿岩分离; 损失; 贫化; 毫秒延时
Keywords:
separation of ore and rock;  loss;  dilution;  millisecond delay
分类号:
TD235.2+2;TD801
DOI:
10.3969/j.issn.1001-8352.2019.03.011
文献标志码:
A
摘要:
在露天矿山开采过程中，矿石损失与贫化反映了矿产资源的有效利用程度，是评价矿床开采水平的主要指标之一。露天台阶爆破推进至矿岩交界处时，损失、贫化都会相应增加。通过应力波相互作用关系和自由面形成所需的时间对矿岩分离爆破毫秒延时间隔进行了分析，得到了矿岩分界线两侧的孔需要同时起爆，与其相邻孔的延时间隔时间设定为100 ms的爆破方法。现场试验应用表明，在矿岩分界线处可以形成明显的拉沟现象。
Abstract:
In the process of open-pit mining, ore loss and dilution which reflect the utilization efficiency of mineral resources is one of the main indicators to evaluate the level of mining. When the open-pit bench blasting is advanced to the junction of ore and rock, the loss and dilution will increase correspondingly. The millisecond delay time interval of ore-rock separation blasting was analyzed by the interaction of stress wave and the formation of free surface. The blasting method that the delay time interval between the two sides of ore-rock boundary needs to be set at 100 ms is identified. Application of field test shows that obvious trenching phenomenon can be formed at the ore-rock boundary.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2018-10-22
第一作者：李顺波（1985- ），男，博士，主要从事岩石破碎块度和爆破振动控制研究。E-mail:lshunbo@126.com
更新日期/Last Update: 2019-05-20