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1、finish/clear,start/filname,processofshujing/title,processofshujing/prep7r1=5.1!竖井半径（井壁内径）r2=r1+0.35!二支半径（井壁外径）,0.35为壁厚r3=r2+0.12!初支半径,0.12为初支厚度r4=r2+2.5!围岩中锚杆区的半径,2.5为锚杆长度（包括初支和锚杆区）r5=12*r1!边界范围半径h=50!基岩上部竖井深度et,1,solid45et,2,surf154!定义三维表面效应单元（井壁摩擦）KEYOPT,2,2,0!指定表
2、面效应单元的K2=0,所加荷载与单元坐标系方向相同KEYOPT,2,4,1!指定表面效应单元的K4=0,去掉边中点,成为四结点表面单元!围岩参数ex1=1500e6!弹性模量（Pa）nuxy1=0.4!泊松比dens1=1900!密度（kg*m3）c1=100e3!粘聚力（Pa）jiaodu1=25!内摩擦家（°度）mp,ex,1,ex1mp,nuxy,1,nuxy1mp,dens,1,dens1tb,dp,1,,,0!德鲁克——普拉格准则tbdata,1,c1,jiaodu1,jiaodu1!锚杆区ex2=1600e6nux
3、y2=0.38dens2=1900c2=120e3jiaodu2=26mp,ex,2,ex2mp,nuxy,2,nuxy2mp,dens,2,dens2tb,dp,2,,,0tbdata,1,c2,jiaodu2,jiaodu2!初支ex3=2500e6nuxy3=0.167dens3=2245mp,ex,3,ex3mp,nuxy,3,nuxy3mp,dens,3,dens3!井壁ex4=2800e6nuxy4=0.1667dens4=2500mp,ex,4,ex4mp,nuxy,4,nuxy4mp,dens,4,dens4/
4、view,1,1,1,1!建立模型cyl4,0,0,0,0,r1,90,10!井壁内径cyl4,0,0,0,0,r2,90,10!井壁外径cyl4,0,0,0,0,r3,90,10!初支区cyl4,0,0,0,0,r4,90,10!锚杆区vptn,allvgen,5,all,,,,,10,,,cyl4,0,0,0,0,r5,90,50vptn,allnummrg,allnumcmp,allallsel!划分网格local,11,1,,,!摩擦力csys,11asel,s,loc,x,r2aatt,4,,2,0!面材料4类型2即
5、surf154实常数没有lesize,70,,,10!圆弧lesize,96,,,4!为线指定网格尺寸将选择出来的面的两条面划分lesize,22,,,4lesize,99,,,4lesize,111,,,4lesize,117,,,4mshape,0!指定单元形状0是四边形（2d）mshkey,1!指定划分方式1是映射0是自由amesh,allcsys,0vsel,allvatt,1,1,1!井筒lesize,67,,,4lesize,68,,,4lesize,66,,,10!圆弧lsel,s,,,84,93,3!体扫掠的预
6、划分lsel,a,,,9lesize,all,,,4allselvsweep,6!体扫掠vsweep,5vsweep,4vsweep,3vsweep,1!井壁lesize,69,,,1lesize,71,,,1lesize,70,,,10!圆弧vsweep,18vsweep,15vsweep,9vsweep,8vsweep,7!初支lesize,72,,,1lesize,74,,,1lesize,73,,,10!圆弧vsweep,19vsweep,16vsweep,13vsweep,2vsweep,11!锚杆区lesize,7
7、5,,,1lesize,77,,,1lesize,76,,,10!圆弧vsweep,20vsweep,17vsweep,14vsweep,12vsweep,10!围岩区lesize,124,,,10lesize,125,,,10lesize,122,,,10lesize,123,,,10lesize,79,,,10!圆弧vsweep,21allsel!出现WARNING网格划分大小有问题如何设置LIMITs!施加边界条件asel,s,loc,z,0!底面da,all,uz,0asel,s,loc,x,0!侧面da,all,sy
8、mm!symm表示对称节点处的法向位移（UX）为0绕两个切线方向的转角（ROTYZ）也为0asel,s,loc,y,0da,all,symmlocal,11,1,,,!外边界圆弧csys,11asel,s,loc,x,r5nsla,s,1!选择与面相关的节点nrotat,al
