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[1]王明旭,许梦国,赵文斌,等.基于磁场理论的矿岩加载损伤破坏表征研究[J].中国安全生产科学技术,2017,13(2):68-73.[doi:10.11731/j.issn.1673-193x.2017.02.012]
　WANG Mingxu,XU Mengguo,ZHAO Wenbin,et al.Study on damage and failure characterization of ore rock loading based on magnetic field theory[J].Journal of Safety Science and Technology,2017,13(2):68-73.[doi:10.11731/j.issn.1673-193x.2017.02.012]
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基于磁场理论的矿岩加载损伤破坏表征研究

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年2期
页码:
68-73
栏目:
现代职业安全卫生管理与技术
出版日期:
2017-02-28

文章信息/Info

Title:
Study on damage and failure characterization of ore rock loading based on magnetic field theory
文章编号:
1673-193X(2017)-02-0068-06
作者:
王明旭1; 2; 许梦国1; 赵文斌1; 张玉山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 Mingxu1; 2;  XU Mengguo1;  ZHAO Wenbin1;  ZHANG Yushan1
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:
磁场理论; 损伤破坏; 磁粉; 裂纹扩展; 荧光剂; 二维扫描
Keywords:
magnetic field theory;  damage and failure;  magnetic powder;  crack propagation;  fluorescent agent;  two-dimensional scanning
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2017.02.012
文献标志码:
A
摘要:
充填体与围岩的相互力学作用，除了接触带表壁附近可以通过贴置电阻应变片的方式进行应变值测量外，接触面及接触带附近的损伤破坏情况不易监测。基于此，应用磁场理论，将磁粉加入到配比试样中，充磁之后进行加载试验。通过特斯拉计测量试样表壁在加载过程中的磁感应强度变化，建立由表及里的损伤破坏联系规律。试验结果表明：加了磁粉的配比试样，在加载过程中各监测点处的磁感应强度值变化明显，特别是在内部裂纹扩展至临空面处的磁感应强度几乎减小至0.2 mT以下；而试样在加载过程中，各监测点的磁感应强度值随着压密破坏而变化；在未破坏时，不同区域有较一致的随试样内部压密相应磁感应强度增大的变化规律，而在试样加载破坏后，不同监测点磁感应强度变化起伏较大。
Abstract:
For the mutual mechanical action between the filling body and the surrounding rock, in addition to the strain measurement near the surface wall of contact zone through the method of laying the electric resistance strain gauge, the situation of damage and failure of the contact surface and in the vicinity of contact zone is difficult to monitor. The loading tests were conducted after magnetizing through adding magnetic powder into the allocated proportion samples by using the magnetic field theory. The change of magnetic induction intensity on the surface wall of samples during the loading process was measured by Tesla meter, and the relationship of damage and failure from surface to inside was established. The test results showed that the magnetic induction intensity at each monitoring point changed obviously during the loading process for the allocated proportion samples with magnetic powder, especially when the internal crack propagated to the free surface, the magnetic induction intensity reduced to below 0.2 mT. The magnetic induction intensity at each monitoring point changed with the compression failure. In the absence of failure, there was a more consistent change law that the magnetic induction intensity increases with the internal compression of samples in different area. While after loading failure of sample, the variation of magnetic induction intensity fluctuates at different monitoring points.

参考文献/References:

［1］贾炳，魏建平，温志辉. 峰值前后多次加载下煤样声发射特征［J］.中国安全生产科学技术, 2016,12(4): 5-9. JIA Bing, WEI Jiangping, WEN Zhihui. Acoustic emission characteristics of coal samples under multiple loading processes before and after the peak value［J］.Journal of Safety Science and Technology, 2016,12(4): 5-9.
［2］于莹.脆性岩石挤压断裂过程应力磁感强度实验研究［D］.沈阳：东北大学，2011：8.
［3］何耀宇，宋选民，李斌，等. 天然岩石单轴压裂过程磁组构响应实验研究［J］.太原理工大学学报，2015，46（6）：672-679. HE Yaoyu，SONG Xuanmin，LI Bin，et al. Natural rock fracturing process uniaxial magnetic fabric response experiment［J］. Journal of taiyuan university of technology，2015，46（6）：672-679.
［4］杨涛. 应力作用对岩石磁性的影响［J］.地球物理学进展，2011，26（4）：1175-1185. YANG Tao. Stress effect on rock magnetism［J］.Progress in Geophysics， 2011，26（4）：1175-1185.
［5］郝锦绮，钱书清，高金田，等.岩石破裂过程中的超低频电磁异常［J］.地震学报，2003，25（1）：102-111. HAO Jinqi， QIAN Shuqing， GAO Jintian， et al. Ulf electric and magnetic anomalies accompanying anying the cracking of rock sample［J］.Acta Seismologica Sinica， 2003，25（1）：102-111.
［6］赵扬锋，潘一山. 单轴压缩下花岗岩电磁信号的实验研究［J］. 中国地质灾害与防治学报，2009，20(3):132-137，141. ZHAO Yangfeng，PAN Yishan. Study on the charge and magnetic signals of granite samples under uniaxial compression［J］. The Chinese Journal of Geological Hazard and Control，2009，20(3):132-137，141.
［7］宋晓艳，李忠辉，王恩元，等.岩石受载破坏裂纹扩展带电特性［J］.煤炭学报，2016，41（8）：1941-1945. SONG Xiaoyan，LI Zhonghui，WANG Enyuan，et al. Charging characteristics of the crack propagation of rock under load［J］.Journal of China Coal Society， 2016，41（8）：1941-1945.
［8］张琪. 天然带磁圆柱岩石试件压缩过程应力磁强效应研究［D］.沈阳：东北大学，2013：49-56.
［9］万国香.应力波作用下岩石电磁辐射与声发射特性研究［D］.长沙：中南大学，2008：28.
［10］肖波，潘永信. 磁铁矿的低温磁学性质研究进展［J］. 地球物理学进展，2006，21(2):408-415. XIAO Bo， PAN Yongxin. Review of the low temperature magnetic properties of magnetite［J］. Progress in Geophysics，2006，21(2):408-415.
［11］张继军，王林军，施凌云，等. Cd0.8Mn0.2Te晶体的磁化强度和法拉第效应研究［J］.功能材料，2011（5）：831-833, 837. ZHANG Jijun，WANG Linjun， SHI Linyun，et al. Effects of Nb and Zr dopant content on the boundary phases and the coercivity of powder sintered Nd(Dy，Gd)-Fe(Nb，Zr，Al，Cu)-B magnets［J］. Functional Materials，2011（5）：831-833, 837.
［12］鲁贻虎. Cd0.8Mn0.2Te晶体的磁化强度和法拉第效应研究［D］.宁波：宁波大学，2014:33.
［13］张功义，张军，陈驹. 混凝土受压过程磁场效应的试验研究［J］.低温建筑技术，2014（5）：1-3. ZHANG Gongyi, ZHANG Jun, CHEN Ju. Experimental study on concrete compression process of the magnetic field effect［J］. Low Temperature Architecture Technology，2014（5）：1-3.
［14］罗先启，葛修润，程圣国，等.地质力学磁力模型试验相似材料磁力特性研究［J］.岩石力学与工程学报，2009，2（S2）:3801-3807. LUO Xianqi，GE Xiurun，CHENG Shengguo，et al. Study of magnetic material property of geomechanical model test in electromagnet field［J］. Chinese Journal of Rock Mechanics and Engineering，2009，2（S2）:3801-3807.
［15］谢然红，肖立志. 核磁共振测井探测岩石内部磁场梯度的方法［J］.地球物理学报，2009，52(5)：1341-1347. XIE Ranhong，XIAO Lizhi. NMP logging probing the internal magnetic field gradients of rocks［J］.Chinese Journal of Geophysics， 2009，52(5)：1341-1347.
［16］徐梦龙，杨长保，刘万崧，等. 岩石密度及磁化率与反射光谱特征关系研究［J］.光谱学与光谱分析，2015，35（8）：2225-2230. XU Menglong，YANG Changbao，LIU Wansong，et al. Study on rock density and magnetic susceptibility and reflectance spectral［J］. Spectroscopy and Spectral Analysis，2015，35（8）：2225-2230.

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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: 2017-03-29