采矿与安全工程学报Issue(1)：60-65,6.
深部工作面采动应力场分布变化规律实测研究
Distribution and variation of mining-induced stress field in deep workface
摘要
Abstract
To prevent the occurrence of dynamic disaster in deep soft coal seam, based on the engi-neering background in No.2 Coal Mine of Pingdingshan Tianan Coal Co. Ltd., the mining-induced stress field in the deep workface was measured by using the stress real-time monitoring system, and the distribution and variation of stress along strike and inclination was studied. In addition, the effect of stress on coal stability and dynamic phenomena was further analyzed, and the dynamic disasters which may occur in this workface were discussed. The results show that in the upper part of workface, which is approaching the gob-side, the influencing distance of advanced mining-induced stress, the stress con-centration range within the roadway coal sidewalls are larger, and the stress concentration factor and peak value of stress are higher. The stress distribution and variation is quite different between the head and end of the workface. Moreover, the variation of peak stress and stress gradient significantly influ-ence the stability of coalmass. Because the main disaster probably occurred at the workface is extrusion disaster controlled by the stress, the dynamic disasters can be fore casted by monitoring the stress changes at the workface.关键词
采动应力监测/应力分布规律/动力现象Key words
mining-induced stress monitoring/stress distribution/dynamic phenomenon分类
矿业与冶金引用本文复制引用
刘杰,王恩元,赵恩来,徐文全,胡少斌..深部工作面采动应力场分布变化规律实测研究[J].采矿与安全工程学报,2014,(1):60-65,6.基金项目
国家“十二五”科技支撑计划项目(2012BAK04B07-2)；国家自然科学青年基金项目(51304205)；教育部科学技术研究项目 （2012BAK04B07-2）
