摘要
对岩体超低摩擦现象的国内外研究现状进行了综述,介绍了岩体中存在的超低摩擦效应,指出在深部开采条件下,岩体工程中的超低摩擦现象与冲击地压、矿震、地震等扰动密切相关.利用卧式双向伺服加载实验机进行了岩石试件超低摩擦效应的实验研究.结果表明:水平向微小扰动比垂直向扰动对岩石试样接触面应力降的影响更为明显,说明水平向扰动是引起岩体超低摩擦效应的主要因素.
In this paper, we summarized the status quo of ultra-low friction phenomenon of rock mass in deep mining both at home and abroad, introduced. The ultra-low friction effect existing in rock mass, and pointed out that the ultra-low friction effect in rock mass is closely related with rock burst, mining tremors, earthquake, and so on. Using horizontal servo testing machine of reversible loading, we performed the experiment of ultra-low friction effect in rock mass. The results show that the effect of micro-disturbance in horizontal direction on stress drop is more obvious than that in vertical direction. The disturbance in horizontal direction is the main factor of inducing ultra-low friction effect in rock mass.
出处
《采矿与安全工程学报》
EI
北大核心
2008年第2期164-167,共4页
Journal of Mining & Safety Engineering
基金
国家自然科学基金重大项目(50490275)
关键词
岩石力学
深部开采
应力降
超低摩擦效应
扰动
rock mechanics
deep exploitation
stress drop
anomalously low friction effect
disturbance
