摘要
通过数值模拟系统研究了矿山压力作用下郑州矿区超化煤矿22061工作面"三软"煤层底板采动变形破坏的深度及其受岩层组合结构控制的变化规律.提出了在正常采动情况下软顶、厚的软煤和软底的"三软"煤层底板变形仅发生在一定浅部范围内,厚的软煤和软底对应力和变形的传播具有一定的缓冲作用.揭示了中段灰岩组(L7、8灰)对应力分布和变形破坏的重要控制作用,并与该面的实测相关结果进行了对比分析.这为豫西煤炭资源向深部开采所引起的底板水防治提供了部分力学的参考依据.
The depth of deformation and destruction and its feature controlled by combination structures of strata and geologic structure were systemically researched, and the law of variation was systematically researched on mining effect of the＂three-soft＂ coal seam floor by numerical analysis on 22061 working face in Chaohua colliery in Zhengzhou mining area. Deformation oceures in a certain shallow depth on ＂three-soft＂ coal seam floor under the normal condition, thick soft coal seam and soft floor had a buffer, action for stress and deformation , and the middle section of linestone had an important controlling function to the stress distribution and deformation and destruction, and there were correlation analysis between numerical analysis and field measurement. It is as the mechanical basis for prevention and cure of floor water for the mining coal to the depth of the west of Henan province.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2010年第1期13-16,共4页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金(青年基金)项目(40702054)
中国矿业大学"启航计划"资助项目
中国矿业大学青年基金项目
关键词
矿山压力
“三软”煤层
采动底板变形
实测
数值模拟
underground pressure
＂three-soft＂coal seam
mining floor deformation
field measurement
numerical simulation
