摘要
通过现场观测和理论分析认为 ,综放工作面采空侧煤体受到老顶以给定变形作用 ,在煤体边缘形成一定宽度的塑性区 塑性区的宽度与老顶的活动规律、煤层和直接顶的厚度、力学特性有关 ,运用模尔库仑准则建立了计算塑性区宽度的力学模型 ,提出了综放沿空掘巷的定位方法 ,并用于工程实践 图 4,表 1,参
According to the results of field observation and theory analysis,it is found that the plastical deformation zone of narrow coal pillar of road driving along next goaf in sublevel caving face is formed by the effect of “given deformation”of the main roof.The width of plastical deformation zone f narrow pillar is determined by many factors such as main roof fracture pattern,mechanics character and thickness of immediate roof and coal seam.The calculating mechanics model of width of plastical deformation zone of narrow coal pillar is deducted from Mohr-Coulomb criterion.According to the results of the model,the way of determining reasonable position of road driving along next goaf is put forward and applied to practice.4figs.,1tab.,6refs.
出处
《湘潭矿业学院学报》
2001年第2期1-4,共4页
Journal of Xiangtan Mining Institute
基金
博士点学科基金资助项目 (1 9990 2 90 0 8)
关键词
综放工作面
沿空掘巷
给定变形
塑性区
宽度
窄煤柱
老顶
模尔库仑准则
sublevel caving face
road driving along next goaf
given deformation
narrow coal pillar
width of plastically deformation zone
