采矿与安全工程学报2016，Vol.33Issue(3)：521-527,7.DOI:10.13545/j.cnki.jmse.2016.03.022
层理倾角对黑云变粒岩声发射特征的影响
The influence of bedding angle on acoustic emission characteristics in biotite granulite
摘要
Abstract
In order to study the influence of bedding angles on acoustic emission (AE) characteristics, the AE experiments on the biotite granulite specimens with the bedding angles of 0°, 45°and 90°were conducted. The biotite granulite specimens were taken from Sijiaying open pit mine in Luan County, Hebei province, China. Under the uniaxial compression condition, the spatial and temporal distribution of AE events, the change of the box dimension and the characteristics of the energy release were studied. The research results have shown that:1) The evolution laws of AE events in the specimens with the bedding angles of 0°and 90°were similar, while the evolution laws of AE events in the specimens with the bedding angle of 45°were significantly influenced by the fracture modes; 2) With the increasing of the bedding angles, the number of specimens in which box dimension reduction occurred before the failure was decreasing, and AE energy was prone to releasing in a sudden way. The findings have aca-demic value to the research on revelation of mechanism of disintegration with acoustic emission.关键词
黑云变粒岩/层理倾角/声发射/盒维数/能量Key words
biotite granulite/bedding angle/acoustic emission/box dimension/energy分类
矿业与冶金引用本文复制引用
杨振琦,邓文学,张鹏海,王培涛,张添文,杨天鸿..层理倾角对黑云变粒岩声发射特征的影响[J].采矿与安全工程学报,2016,33(3):521-527,7.基金项目
国家重点基础研究发展计划(973)项目(2013CB227902) （973）
