|本期目录/Table of Contents|

[1]王明旭,程爱平,刘晓云.早强充填体与矿柱相互作用的声发射特征试验研究[J].中国安全生产科学技术,2017,13(4):10-15.[doi:10.11731/j.issn.1673-193x.2017.04.002]
 WANG Mingxu,CHENG Aiping,LIU Xiaoyun.Experimental study on acoustic emission characteristics of interaction between early strength filling body and pillar[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(4):10-15.[doi:10.11731/j.issn.1673-193x.2017.04.002]
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早强充填体与矿柱相互作用的声发射特征试验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年4期
页码:
10-15
栏目:
学术论著
出版日期:
2017-04-30

文章信息/Info

Title:
Experimental study on acoustic emission characteristics of interaction between early strength filling body and pillar
文章编号:
1673-193X(2017)-04-0010-06
作者:
王明旭12 程爱平1刘晓云1
1.武汉科技大学 资源与环境工程学院,湖北 武汉 430081;2.武汉科技大学 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
Author(s):
WANG Mingxu12 CHENG Aiping1 LIU Xiaoyun1
1. School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan Hubei 430081, China; 2. Key Laboratory of Hubei Province for High-Efficient Use of Metallurgical Mineral Resources and Agglomeration, Wuhan University of Science and Technology, Wuhan Hubei 430081, China
关键词:
最小主应力最大主应力双轴加载充填体矿柱损伤破坏声发射
Keywords:
minimum principal stress maximum principal stress biaxial loading filling body pillar damage and failure acoustic emission (AE)
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2017.04.002
文献标志码:
A
摘要:
为了更好厘清充填体与矿柱相互作用机理,提出使用石蜡作为胶结剂,通过尾砂加石蜡拌合模拟充填体,建立充填体与矿柱相互作用的复合体模型。基于充填体与矿柱侧边存在临空面这一实际情况,采用自制的双轴加载装置模拟井下早强充填体与矿柱共同受载情况。借助声发射仪监测充填体与矿柱在加载作用下的AE振铃计数及AE点发生位置。试验结果表明:尾砂+石蜡模拟充填体加载破坏后存在残余应力;充填体与矿柱复合体试样在加载过程中的内部破坏主要发生在充填体内和充填体与矿柱接触带区域。
Abstract:
In order to better clarify the interaction mechanism between the filling body and pillar, it was proposed to establish a complex model of interaction between filling body and pillar by using the paraffin as the cementing agent and simulating the filling body with the mixture of tailings and paraffin. Based on the fact that there exist free face on the sides of filling body and pillar, the common loading situation of underground early strength filling body and pillar was simulated by using the self-made biaxial loading device. The acoustic emission (AE) ring-down count and the occurrence positions of AE points in the filling body and pillar under loading were monitored by the acoustic emission instrument. The experimental results showed that there exists the residual stress after the loading failure of simulated filling body with tailings and paraffin. The internal failure of the complex specimen with the filling body and pillar during the loading process mainly occur in the filling body and the contact zone area between the filling body and pillar.

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备注/Memo

备注/Memo:
国家自然科学基金项目(51604195)
更新日期/Last Update: 2017-05-11