|本期目录/Table of Contents|

[1]张宝才,法立滕,马宁,等.大孤山铁矿边坡爆破损伤分区研究[J].中国安全生产科学技术,2012,8(6):53.
　ZHANG Bao cai,FA Li teng,MA Ning,et al.Study on blasting damage partition for the slope in Dagushan iron mine[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2012,8(6):53.
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大孤山铁矿边坡爆破损伤分区研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
8
期数:
2012年6期
页码:
53
栏目:
学术论著
出版日期:
2012-06-30

文章信息/Info

Title:
Study on blasting damage partition for the slope in Dagushan iron mine
作者:
张宝才1;  法立滕2;  马宁2;  张晨曦2
（1鞍钢集团矿业公司大孤山铁矿，鞍山 114046） （2中国矿业大学（北京）力学与建筑工程学院，北京 100083）
Author(s):
ZHANG Baocai1; FA Liteng2; MA Ning2; ZHANG Chenxi2
（1Dagushan Iron Mine, Ansteel Mining, Co., Anshan 114046, China） （2School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China）
关键词:
爆破损伤分区;  数值模拟;  质点峰值速度;  边坡稳定
Keywords:
blasting damage partition; numerical simulation; particle peak velocity; slope stability
分类号:
X936
DOI:
-
文献标志码:
A
摘要:
露天矿生产爆破，特别是靠帮爆破在边坡中形成的爆破损伤区对其稳定性具有很大的影响。本文针对大孤山铁矿露天爆破开采的实际情况，建立了极限平衡数值分析模型及峰值速度衰减公式。利用数值分析软件Geoslope对边坡靠帮爆破过程中岩体损伤范围进行了研究，主要分析了在爆破-200--212m水平时，爆破震动对边坡岩体的影响，并利用萨道夫斯基公式和PPV安全判据对爆区周围岩体损伤范围进行了计算。结果表明距离炮孔62m以内范围为完全破碎区，62-124m为岩体重度损伤区，124-197m为轻微损伤区。数值分析表明距爆源同一距离的岩体质点峰值速度随深度的增加而减小，爆破区周围震动波速成漏斗形分布，同实际爆破情况吻合。
Abstract:
During open pit mine blasting，slope stability has been great affected by the slope blasting damage partition near slope blasting．A calculation model for slope blasting and the blasting vibration attenuation formula were built in the light of the practical situation during the blasting production in Dagushan iron mine．The numerical analysis software Geoslope was used to study the rock blasting damage range near slope blasting， then blasting vibration on the influence of the slope rock mass were analyzed under the conditions of200-212 meters mining levels, and the damage range surrounding blasting zone were obtained with Sadaovsky empirical formula and PPV damage criterion．The results showed that away from the gun hole within 62meters for completely broken range of rock mass, 62124 meters for severe damage range, 124 197 meters for minor damage range．Numerical analysis showed that the rock peak speed of particle with same distance from the blasting source would decrease with the increase of depth, the vibration wave velocity around the blasting area showed a funnel distribution fwhich agreed with the actual blasting situation．

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金（编号：51174208，51034005）；中央高校基本科研业务费专项资金（编号：2011YZ01）
更新日期/Last Update: 2012-08-03