基于RFPA2D-Flow的瓦斯抽放钻孔破坏过程数值分析  

NUMERICAL ANALYSIS OF THE DESTROY PROCESS OF GAS DRAINAGE HOLE BASED ON RFPA2D-FLOW

作　　者：林井祥[1] 孙广义[1] 

机构地区：[1]黑龙江科技大学矿业工程学院,哈尔滨150022

出　　处：《矿冶》2015年第1期11-14,共4页Mining And Metallurgy

基　　金：国家自然科学基金资助项目(51074068)

摘　　要：从瓦斯抽放过程中钻孔的塌孔卡钻现象出发,应用RFPA2D-Flow对瓦斯抽放钻孔破坏过程进行了数值模拟,得到了钻孔附近X方向和Y方向的应力曲线,以及在整个破坏过程中钻孔上下两侧孔壁首先被拉裂然后导致破坏向左右两侧孔壁逐渐延伸的发展过程。In this paper, starting from the phenomenon of hole subsiding and driller blocking in gas drainage process, using the RFPA2D - Flow, the failure process of the gas drainage hole are simulated. The stress curve of X direction and Y direction in vicinity of the borehole are obtained, showing the process of damage occurs first as cracks develop on up and down sides of the drilling hole wall and then extend to the left and right sides of the hole wall gradually.

关 键 词：瓦斯抽放 钻孔破坏 平面应变 数值分析 

分 类 号：TD712[矿业工程—矿井通风与安全]