废石尾砂交替充填采场复合支撑体应力协调研究

doi:10.16265/j.cnki.issn1003-3033.2019.04.016

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (4): 96-103.doi: 10.16265/j.cnki.issn1003-3033.2019.04.016

废石尾砂交替充填采场复合支撑体应力协调研究

王其虎^1,2 副教授, 张光权^**1,2 讲师, 叶义成^1,2 教授, 姜维³ 工程师

1 冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉 430081;
2 武汉科技大学资源与环境工程学院,湖北武汉 430081;
3 武钢资源集团大冶铁矿有限公司,湖北黄石 435006

收稿日期:2018-12-20 修回日期:2019-02-27 出版日期:2019-04-28 发布日期:2020-11-04
通讯作者: ** 张光权(1981—),男,湖北荆州人,博士,讲师,主要从事矿山安全方面的研究。E-mail:zhanggq@wust.edu.cn。
作者简介:王其虎 (1987—),男,湖北钟祥人,博士,副教授,主要从事矿山安全方面的研究。E-mail:wangqihu@wust.edu.cn。
基金资助:
国家自然科学基金资助(51704213);湖北省自然科学基金资助(2017CFC831)。

Study on stress coordination of composite support body in stope filled alternately with waste rock and tailings

WANG Qihu^1,2, ZHANG Guangquan^1,2, YE Yicheng^1,2, JIANG Wei³

1 Hubei Provincial Engineering Technology Research Center of High efficient Clean Utilization Shale Vanadium Resource, Wuhan Hubei 430081, China;
2 School of Resource and Environmental Engineering,Wuhan University of Science and Technology, Wuhan Hubei 430081, China;
3 Daye Iron Mine Corporation Limited of WISCO Resource Group, Huangshi Hubei 435006, China

Received:2018-12-20 Revised:2019-02-27 Online:2019-04-28 Published:2020-11-04

摘要/Abstract

摘要： 为解决废石尾砂交替充填采场中复合支撑体的不均匀承载问题,以典型废石尾砂交替充填采场为例,采用有限元数值模拟方法,分析复合支撑体内部的不均匀承载特征,进一步探讨协调废石尾砂交替充填采场应力的可行方法及其适用性,提出基于柔性接顶的应力协调方案,并通过弹性力学分析和数值模拟验证应力协调方案的有效性。结果表明:废石尾砂交替充填采场的支撑荷载大部分集中在相对刚性的废石充填体上,而尾砂充填体未充分发挥其承载作用,不利于复合支撑体的安全稳定;采用基于柔性接顶的应力协调方案,可通过较小厚度的柔性接顶有效改善复合支撑体的不均匀承载状态,提高充填体的支撑效率。

关键词: 采场, 废石尾砂充填, 复合支撑体, 不均匀承载, 应力协调

Abstract: In order to solve the inhomogeneous loading of the composite support body in stope filled alternately with waste rock and tailings, the typical stope filled alternately with waste rock and tailings was taken as an example, and the inhomogeneous loading characteristics of the composite support were analyzed by finite element numerical simulation. Then the feasible methods and their applicability to coordinate the stress of the stope filled with waste rock and tailings were discussed, and the stress coordination scheme based on roof-contacted filling with flexible material was put forward. Finally, the effectiveness of the stress coordination scheme was verified by elastic mechanics analysis and numerical simulation. The results show that most of the loads are concentrated on the relatively rigid waste rock filling body, and the bearing capacity of tailings filling body is not fully utilized, which is not conducive to the safety and stability of the composite support body. With the stress coordination scheme based on roof-contacted filling with flexible material, roof-contacted filling with small thickness flexible material can effectively improve the inhomogeneous loading of the composite support body and the supporting efficiency of the filling body.

Key words: stope, alternately filling with waste rock and tailings, composite support body, inhomogeneous loading, stress coordination

中图分类号:

X936

王其虎, 张光权, 叶义成, 姜维. 废石尾砂交替充填采场复合支撑体应力协调研究[J]. 中国安全科学学报, 2019, 29(4): 96-103.

WANG Qihu, ZHANG Guangquan, YE Yicheng, JIANG Wei. Study on stress coordination of composite support body in stope filled alternately with waste rock and tailings[J]. China Safety Science Journal, 2019, 29(4): 96-103.

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废石尾砂交替充填采场复合支撑体应力协调研究

Study on stress coordination of composite support body in stope filled alternately with waste rock and tailings

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