请问超浅埋开挖地表隆起，与埋深增大地表沉降减小不符

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；这是flac书中的命令流
new
;建立隧道1/4圆形模型
gen zone radcyl p0 0 0 0 p1 10.55 0 0 p2 0 1 0 p3 0 0 10.55 &
size 5 2 10 4 dim 5.55 5.55 5.55 5.55 rat 1 1 1 1.2 group outsiderocksy
gen zone cshell p0 0 0 0 p1 5.55 0 0 p2 0 1 0 p3 0 0 5.55 &
size 1 2 10 4 dim 5.05 5.05 5.05 5.05 rat 1 1 1 1 group concretlinersy fill group insiderocksy
gen zone radcyl p0 0 0 0 p1 0 0 -9 p2 0 1 0 p3 10.55 0 0 &
size 5 2 10 4 dim 4 5.55 4 5.55 rat 1 1 1 1.2 group outsiderockxy
gen zone cshell p0 0 0 0 p1 0 0 -4 p2 0 1 0 p3 5.55 0 0 &
size 1 2 10 4 dim 3.5 5.05 3.5 5.05 rat 1 1 1 1 group concretlinerxy fill group insiderockxy
;隧道上下部分土体
gen zone brick p0 0 0 10.55 p1 10.55 0 10.55 p2 0 1 10.55 p3 0 0 25.55 &
size 5 2 8 group outsiderock1
gen zone brick p0 0 0 -34.55 p1 10.55 0 -34.55 p2 0 1 -34.55 p3 0 0 -9 &
size 5 2 12 group outsiderock2
;隧道右侧部分土体
gen zone brick p0 10.55 0 0 p1 50 0 0 p2 10.55 1 0 p3 10.55 0 10.55 &
size 20 2 5 group outsiderock3
gen zone brick p0 10.55 0 -9 p1 50 0 -9 p2 10.55 1 -9 p3 10.55 0 0 &
size 20 2 5 group outsiderock3
;隧道右侧上下部分土体
gen zone brick p0 10.55 0 10.55 p1 50 0 10.55 p2 10.55 1 10.55 p3 10.55 0 25.55 &
size 20 2 8 group outsiderock4
gen zone brick p0 10.55 0 -34.55 p1 50 0 -34.55 p2 10.55 1 -34.55 p3 10.55 0 -9 &
size 20 2 12 group outsiderock5
;完整模型
gen zone reflect dip 90 dd 90 orig 0 0 0
;施加重力边界条件
set gravity 0 0 -10
fix z range z -34.56 -34.54
fix x range x -50.01 -49.99
fix x range x 49.99 50.01
fix y range y -0.01 0.01
fix y range y -0.99 1.01
model mohr
ini density 2000
prop bulk=7.14e8 shear 3.333e9 fric=25 coh=2e5 tension=1.0e5
solve
ini xdis 0.0 ydis 0.0 zdis 0.0
model null range group insiderockxy any group concretlinerxy any
model null range group insiderocksy any group concretlinersy any