露天采矿技术2025，Vol.40Issue(1)：75-79,5.DOI:10.13235/j.cnki.ltcm.20240173
降低海峰露天矿矿山爆破大块率的方法
Methods on reducing the blasting bulk rate of Haifeng Open-pit Mine
宋凡平 1刘明峰 1牛华铭 1陈坤 1陈建安 1胡坤伦1
作者信息
- 1. 安徽江南爆破工程有限公司,安徽 宁国 242300
- 折叠
摘要
Abstract
In order to solve the problems such as poor blasting effect,high bulk rate and multiple foundation of Haifeng Mine in Xuancheng City,Anhui Province,the article first analyzes the formation mechanism of blasting bulk from the three aspects of step slope,top and bottom,and gives the design and construction methods for reducing the bulk rate.Then we carry out the field experiment to verify the parameters such as re-designing hole row spacing and improving the charge structure.The experimental results show that the hole mesh parameters with large hole spacing and small row spacing,the structure of staggered peak interval charge and the"V"shape initiation method can effectively control the blasting bulk rate and improve the blasting effect significantly.The average bulk rate of Haifeng Mine is reduced from 5.2%to 1.1%,and the secondary crushing cost is reduced from 0.35 yuan/t to 0.11 yuan/t,achieving the production target of cost reduction and efficiency increase.关键词
露天矿/大块率/二次破碎/根底/孔网参数Key words
open-pit mine/bulk rate/secondary crushing/root/mesh parameter分类
矿业与冶金引用本文复制引用
宋凡平,刘明峰,牛华铭,陈坤,陈建安,胡坤伦..降低海峰露天矿矿山爆破大块率的方法[J].露天采矿技术,2025,40(1):75-79,5.
