瓦斯抽采钻井挤压变形破坏分析  

Analysis of Gas Borehole Squeezing Deformation

作　　者：肖存明 李嘉豪[2] 

机构地区：[1]江西萍乡市巨源煤矿,江西萍乡337000 [2]江西工业工程职业技术学院,江西萍乡337055

出　　处：《煤炭技术》2011年第1期109-112,共4页Coal Technology

摘　　要：作为一种有效解决回采工作面和采空区瓦斯超限难题的瓦斯治理方式,地面瓦斯抽采正在全国各大矿区逐步推广。但受煤层回采的影响,当回采工作面推过地面钻井位置后钻井套管迅速发生破坏,无法充分发挥其抽采采空区瓦斯的作用。这与地面抽采钻井套管受到的非均布挤压效应是密不可分的,因此,建立了基于采场上覆岩层挤压变形效应的地面钻井挤压变形破坏模型,为地面抽采钻井布孔位置的选择和防护提供工程指导,同时,运用3DEC离散元数值模拟程序对模型进行了模拟验证。结果证明,模型描述的规律性是可靠的,具有较强的工程指导意义。As a good method to solve the high methane at workface and in the goal, the surface gas drainage is spreading at every big mining area in our country. But effected by coal actual mining when the excavation face passed through the surface borehole position, the surface borehole pipe fast destroied, thus, it couldn t play a role of drawing goal gas. This problem is seriously related to the unformed squeeze effect. So a squeezing deformation fracture model based on the rock strata squeezing effect was set up. In the same time, a 3DEC simulation model was given to certificate the theory model. The result shows that the model is reliable and has good engineering application value.

关 键 词：瓦斯抽采 地面钻井 挤压变形 

分 类 号：TD71[矿业工程—矿井通风与安全]