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[1]秦宏楠,李长洪,马海涛,等.基于颗粒流的溜井冲击破坏规律研究[J].中国安全生产科学技术,2015,11(4):20-26.[doi:10.11731/j.issn.1673-193X.2015.04.003]
　QIN Hong-nan,LI Chang-hong,MA Hai-tao,et al.Study on impact damage laws of ore pass vased on particle flow[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(4):20-26.[doi:10.11731/j.issn.1673-193X.2015.04.003]
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基于颗粒流的溜井冲击破坏规律研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年4期
页码:
20-26
栏目:
学术论著
出版日期:
2015-04-30

文章信息/Info

Title:
Study on impact damage laws of ore pass vased on particle flow
作者:
秦宏楠1; 2; 3; 李长洪1; 马海涛2; 3; 王云海2; 3
（1. 北京科技大学 土木与环境工程学院，北京 100083; 2.中国安全生产科学研究院，北京 100012;3. 矿山采空区灾害防治国家安全生产监督管理总局安全生产重点实验室，北京 100012）
Author(s):
QIN Hong-nan1; 2; 3; LI Chang-hong1;  MA Hai-tao2; 3;  WANG Yun-hai2; 3
1.University of Science & Technology Beijing, Beijing 100083, China; 2.China Academy of Safety Science &Technology, Beijing 100012, China; 3. Key Laborary of Goaf Disasters Prevention, State Administration of Work Safety, Beijing 100012, China)
关键词:
PFC3D; 矿石主溜井; 冲击破坏; 矿石运动规律
Keywords:
PFC3D;  main ore pass;  impact damage;  movement law of ore and rock
分类号:
X936
DOI:
10.11731/j.issn.1673-193X.2015.04.003
文献标志码:
A
摘要:
为了研究溜放矿石在溜井中的运动及冲击规律，以某金属矿山主溜井为研究对象，简化溜放矿石冲击井壁的模型为颗粒流撞击墙的模型，以运动学理论分析结合离散元程序模拟分析了溜放矿石在井筒内的运动规律及对溜井井筒的冲击破坏规律。通过理论计算及数值分析揭示了溜井溜放矿石在井筒中的冲击位置、冲击水平速度、冲击垂直速度、矿石分散程度、冲击动能之间的内在关系。结果表明，对于百米深溜井，溜放矿石一般经过三次冲击后落入井底，三次冲击对井壁的破坏主要以水平冲击造成，其中第二次冲击最为激烈。通过与C-ALS探测的受冲击破坏的井筒三维形态对比分析，验证了分析结果的可靠性。研究结果不仅可为矿山溜井重点部位加固提供理论支持，而且可以大大节约矿山井巷工程的检修工期及维护成本。
Abstract:
In order to study the movement and impact laws of humping ore in pass, taking the main ore pass of a metal mine as the research object, the impact of humping ore to drop shaft was simplified as the model of collision by particle to wall. The motion laws of ore and the impact damage laws to the shaft were analyzed by simulation combining kinematic theory analysis and distinct element code. The inherent relationship between impact position, horizontal speed, vertical speed, the degree of dispersion, shock impact kinetic energy of humping ore in wellbore were revealed by theoretical calculation and numerical analysis. The results showed that, for a hundred meters ore pass, after three times shock of ore, the ore will fall into the bottom of pass, the damage of three impacts on wellbore is mainly the horizontal impact, and the impact of the 2nd impact is the most serious. The accuracy of conclusion was proved by comparing the conclusion above mentioned and the 3D-shape of the ore pass measured by C-ALS. The study could not only provide theoretical support for reinforcement of key parts in ore pass, but also greatly save repair period and cost of maintenance.

参考文献/References:

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备注/Memo

备注/Memo:
国家“十二五”科技支撑计划课题（2012BAK09B02，2012BAK09B06）
更新日期/Last Update: 2015-04-30