含硫结块矿石诱导崩落分解特性分析

金属矿山 ›› 2015, Vol. 44 ›› Issue (07): 52-55.

含硫结块矿石诱导崩落分解特性分析

汪为平^1,2,3，薛小蒙^1,2,3

1.中钢集团马鞍山矿山研究院有限公司，安徽马鞍山 243000；2.金属矿山安全与健康国家重点实验室，安徽马鞍山 243000;3.华唯金属矿产资源高效循环利用国家工程研究中心有限公司，安徽马鞍山 243000

出版日期:2015-07-15 发布日期:2015-08-06
基金资助:
* “十二五”国家科技支撑计划项目（编号：2011BAB07B01）。

Analysis of Induction Caving and Decomposition Characteristics of Sulphide Caking Ore

Wang Weiping^1,2,3，Xue Xiaomeng^1,2,3

1.Sinosteel Maanshan Institute of Mining Research Co.,Ltd.,Manshan 243000，China；2.State Key Laboratory of Safety and Health for Metal Mine，Manshan 243000，China；3.Huawei National Engineering Research Center of High Efficient Cyclic and Utilization of Metal Mineral Resources Co.,Ltd.,Manshan 243000，China

Online:2015-07-15 Published:2015-08-06

摘要/Abstract

摘要： 针对铜坑矿矿石结块问题，运用爆破放顶技术，诱导结块矿石的自然崩落分解。以结块矿石为研究对象，利用LSDYNA数值软件对不同跌落角度、跌落高度和弱结构参数条件下的跌落过程进行仿真模拟试验，获得了结块矿石的崩落分解规律，提出了相应的诱导崩落技术参数。研究结果表明：①结块矿石在跌落高度为5 m和崩落角度30°时能够获得很好的崩解效果，崩解率达到100%。②结块矿石与触地接触面的高度应不小于5 m，并且诱导爆破超深面与水平形成的夹角θ需满足5°＜θ＜30°。研究结果为实施诱导破碎结块矿石的技术工艺和参数提供了理论依据。

关键词: 硫化结块矿石, 诱导崩落, 弱结构, LSDYNA模拟

Abstract: To deal with the caking ore in Tongkeng mine,the blasting caving technique was used to induce caving and break caking ore.Taking caking ore as the object,and with LS-DYNA numerical software,tests were designed to simulate the breaking process of caking ore in different dropping heights,angles and strength of weak structure.Broken laws of caking ore were obtained,and the corresponding induced caving parameters were raised.Results showed that ①better caving result was got in condition of the caving height 5 m and the caving angle 30°,the broken rate is up to 100%.②height between the caking ore and contact surface should be more than 5 m,and the angle between the ultra-deep blasting surface and horizontal plane need to be 5°＜θ＜30°.Research results provide theoretical basis for the processes and parameters of broken caking ore induced by caving.

Key words: Sulphide caking ore, Induction caving, Weak structure, LSDYNA simulation

汪为平, 薛小蒙. 含硫结块矿石诱导崩落分解特性分析[J]. 金属矿山, 2015, 44(07): 52-55.

WANG Wei-Ping, XUE Xiao-Meng. Analysis of Induction Caving and Decomposition Characteristics of Sulphide Caking Ore[J]. Metal Mine, 2015, 44(07): 52-55.

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