综采工作面覆岩下沉量三维表达及采空区孔隙率分布计算  

Three Dimensional Expressions of Overburden Subsidence and Calculation of Porosity Distribution in Fully Mechanized Mining Face

作　　者：张彦斌 王毅[1] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《煤矿安全》2017年第11期210-212,共3页Safety in Coal Mines

摘　　要：以赵庄煤矿3号煤层的3304工作面为研究对象,运用UDEC模拟方法,对采动覆岩移动变形破坏情况及采空区的孔隙率的分布进行研究。结果表明:岩层的下沉形态类似于"簸箕"状分布,得到了采空区孔隙率分布的定量计算表达式及孔隙率分布情况,随着高度的增加,冒落破碎岩体的孔隙率逐渐减小。Taking 3304 working face of Zhaozhuang Coal Mine No.3 coal bed as the research object, using UDEC simulation method, damage movement and deformation of overlying strata and the distribution of mined out area porosity is studied. The results show that the strata subsidence form is similar to ＂dustpan＂shape distribution. The quantitative expression of porosity distribution and the distribution of porosity are obtained. With the increase of height, the porosity of the falling rock mass decreases gradually.

关 键 词：采空区 覆岩移动 下沉量 孔隙率 数值模拟 瓦斯抽采 

分 类 号：TD713[矿业工程—矿井通风与安全]