摘要
山区采动坡体滑移对地表建构筑物具有极大的破坏,合理科学的进行保护煤柱留设对于山区安全开采具有重要的意义.移动角作为保护煤柱留设的重要参数,受到岩层性质与地表坡度的影响.应用基于滑移影响函数的山区地表移动预计模型,计算分析坚硬、中硬、软弱岩性条件下,地表坡度0°～30°变化时移动角的变化规律,提出了岩性与坡度影响下的移动角计算公式,并通过工程应用进行了验证,可靠性较好.
The slip of mining slope on the surface has a great damage to buildings and structures in mountainous areas. It has a great significance for reasonable and scientific designing of the protecting pillar in mountainous areas. The angle of critical deformation,as one of the important parameters of protection coal pillar,has been influenced under rock properties and the surface slope. This paper,based on slip effect function of mountain surface movement prediction model,calculates and analyzes the angle of critical deformation rules in condition of strongly hard,medium hard,weak lithology,and the surface of the slope changes from 0° to 30°. The formula of angle of critical deformation is proposed,and the field data are verified,and the reliability is good.
出处
《矿业工程研究》
2015年第3期62-65,共4页
Mineral Engineering Research
关键词
开采沉陷
移动角
岩层性质
坡度
mining subsidence
angle of critical deformation
strata properties
surface slope
