采矿与安全工程学报2011，Vol.28Issue(4)：614-617,622,5.
露天煤矿抛掷爆破有效抛掷率预测模型
Prediction Mode of Effective Stripping Ratio of Casting Blast in Open Pit
摘要
Abstract
In this paper, in light of the definition of the effective stripping ratio in the progress of surface coal mining, based on the ballistics theory and surface mining theory, we put forward the judgment criteria of effective casting, presented the calculation method for basal area of the effective stripping area, and built discrete model of effective stripping ratio and inversion model of casting velocity. Through scanning the stripping bench before and after blasting, the effective stripping ratio was predicted correctly in open pit. The results show that the inversion velocity is uniform well with the velocity of slope top, which is obtained by the theory of casting blast velocity in flow field, and the velocity of slope top is also similar with the casting velocity in the effective stripping area. The error of the predicted casting velocity is less than 5%, which verifies the effectiveness of the model.关键词
露天煤矿/抛掷爆破/有效抛掷率/有限元模型/反演模型Key words
open pit/ casting blast/ effective stripping ratio/ infinite model/ inversion model分类
矿业与冶金引用本文复制引用
周伟,才庆祥,李克民..露天煤矿抛掷爆破有效抛掷率预测模型[J].采矿与安全工程学报,2011,28(4):614-617,622,5.基金项目
国家"十一五"科技支撑计划项目(2006BAB16B00) （2006BAB16B00）
国家自然科学基金重点项目(51034005) （51034005）
博士点基金项目(20100095110019) （20100095110019）
煤炭资源与安全开采国家重点实验室自主研究课题项目(SK LCRSM 10X01) （SK LCRSM 10X01）
中央高校基本科研业务费专项资金项目(2010QNA33,2011QNA13,2010ZDP01A02) （2010QNA33,2011QNA13,2010ZDP01A02）
江苏高校优势学科建设工程项目 （）
