3DEC软件培训资料.ppt

1、UDEC/3DEC Short Course,Itasca Software Training Course Tongji University Shanghai, China October 27-31, 2008,Peter Cundall, Yanhui Han create a block jset dip 0 dd 0 or 0,.5,0 ; make a horizontal cut hide dip 0 dd 0 or 0,.5,0 below ; hide the bottom block jset dip 90 dd 90 or .5,0,0 ; vertical cut t

2、hrough top block only seek ; make all blocks visible,JSET,poly brick 0 80 -30 80 0 50 ; shallow-dipping fracture planes (continuous) jset dip 2.45 dd 235 org 30 0 12.5 jset dip 2.45 dd 315 org 35 0 30 ; high angle foliation planes (continuous) jset dip 76 dd 270 spac 16 num 3 org 30,0,12.5 ; interse

3、cting discontinuities (non-continuous) hide range x 0,80 y 0,50 z 0,10 hide range x 55,80 y 0,50 z 0,50 jset dip 70 dd 200 org 0 35 0 jset dip 60 dd 330 org 50 15 50 seek hide range x 0,30 y -30,80 z 13,50,JSET,config lh poly brick -1.5,1.5 -1.5,1.5 -1.5,1.5 tunnel radial region 1 & a (-0.30,0.00,-1

4、.5) (-0.3,0.40,-1.5) (-0.25,0.47,-1.5) & (-0.15,0.52,-1.5) ( 0.0,0.55,-1.5) ( 0.15,0.52,-1.5) & ( 0.25,0.47,-1.5) ( 0.3,0.40,-1.5) ( 0.30,0.00,-1.5) & b (-0.30,0.00, 1.5) (-0.3,0.40, 1.5) (-0.25,0.47, 1.5) & (-0.15,0.52, 1.5) ( 0.0,0.55, 1.5) ( 0.15,0.52, 1.5) & ( 0.25,0.47, 1.5) ( 0.3,0.40, 1.5) (

5、0.30,0.00, 1.5) remove region 1,TUNNEL,Boundary locations,Extreme grids “tunnel” sizes are the same,stress,displacement,Practical Exercise 1: Failure of a Jointed Rock Slope,jointed rock unit weight20,000 N/m3 dip angle 76o dip direction 270o spacing 4 m joint normal & shear stiffness 1.0 GPa/m cohe

6、sion 0 friction angle 6o,Low angle joints - dip angle 2.5o,Practical Exercise 2: Stability Analysis of an Underground Excavation,run 3DEC,jointed rock unit weight 20,000 N/m3 bulk modulus 1.5 GPa shear modulus 0.6 GPa three joint planes: 1. dip angle 65o dip direction 270o origin 0.3,0.0,0.0 2. dip angle 40o dip direction 230o origin 0.0,-0.3,0.0 3. dip angle 50o dip direction 320o origin 0.0,0.0,0.3 joint normal & shear st