柔性隔离层下非同步放矿陀螺体的再现规律

doi:10.12068/j.issn.1005-3026.2020.07.012

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (7): 982-990.DOI: 10.12068/j.issn.1005-3026.2020.07.012

柔性隔离层下非同步放矿陀螺体的再现规律

陈庆发¹，王少平²，孟霖霖¹，陈青林¹

(1.广西大学资源环境与材料学院，广西南宁530004； 2.广西大学土木建筑工程学院，广西南宁530004)

收稿日期:2019-09-14 修回日期:2019-09-14 出版日期:2020-07-15 发布日期:2020-07-15
通讯作者: 陈庆发
作者简介:陈庆发(1979-)，男，河南郸城人，广西大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51964003).

Gyrostat Reappearance Law of Non-synchronous Ore Drawing Under Flexible Isolation Layer

CHEN Qing-fa¹， WANG Shao-ping²， MENG Lin-lin¹， CHEN Qing-lin¹

1. College of Resources， Environment and Materials， Guangxi University， Nanning 530004， China; 2. College of Civil Engineering， Guangxi University， Nanning 530004， China.

Received:2019-09-14 Revised:2019-09-14 Online:2020-07-15 Published:2020-07-15
Contact: CHEN Qing-fa
About author:-
Supported by:
-

摘要/Abstract

摘要： 为强化对柔性隔离层下放出体出现“陀螺体”现象的认识，通过借鉴传统立面放矿的概念，并基于大量放矿同步充填留矿法数值试验模型，利用PFC的数据处理及图片输出功能，开展了柔性隔离层下非同步放矿陀螺体再现规律的数值试验研究.研究结果表明:在不同的组合方案放矿条件下，隔离层形态整体呈W形；在放矿优先顺序上，有无优先顺序放矿对隔离层的影响不同；各工况条件下，隔离层出现的空腔在放矿后期表现出宏观特性；放矿过程中产生明显的隔离层横向摩擦效应促使放出体由椭球体向陀螺体转化，陀螺体的转化程度取决于放矿控制是否均匀.

关键词: 采矿工程, 柔性隔离层, 非同步放矿, 陀螺体, 数值试验

Abstract: In order to strengthen the understanding of the phenomenon of “gyrostat” appearing in the draw body under a flexible isolation layer， based on the concept of traditional ore drawing with the facade and a large number of numerical test models of synchronous ore drawing filling and retention method， a numerical experiment was carried out to study the reproduction law of nonsynchronous ore drawing gyrostat under the flexible isolation layer by using the data processing and picture output function in PFC. The results showed that under different combination schemes， the overall shape of isolation layer is W-shaped. In the priority order of ore drawing， the impact of the ore drawing priority on the isolation layer is different. Under different working conditions， the cavity appearing in the isolation layer shows macroscopic characteristics in the late stage of ore drawing. The transverse frictional effect of isolation layer during ore drawing promotes the transformation of draw body from ellipsoid to gyrostat. The conversion degree of gyrostat depends on whether the ore drawing control is uniform or not.

Key words: mining engineering, flexible isolation layer, non-synchronous ore drawing, gyrostat, numerical test

中图分类号:

TD801

陈庆发，王少平，孟霖霖，陈青林. 柔性隔离层下非同步放矿陀螺体的再现规律[J]. 东北大学学报:自然科学版, 2020, 41(7): 982-990.

CHEN Qing-fa， WANG Shao-ping， MENG Lin-lin， CHEN Qing-lin. Gyrostat Reappearance Law of Non-synchronous Ore Drawing Under Flexible Isolation Layer[J]. Journal of Northeastern University Natural Science, 2020, 41(7): 982-990.

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柔性隔离层下非同步放矿陀螺体的再现规律

Gyrostat Reappearance Law of Non-synchronous Ore Drawing Under Flexible Isolation Layer

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