巷道开挖不支护条件下，顶板及两帮位移仅仅几厘米，怎.....
n;==============================N3702运输巷建模==========================================
plot block group
gen zone radtunnelp0 0 0 0 p1 5 0 0 p2 0 30 0 p3 0 0 5 size 5 30 5 5 ratio 1 1 1 1.1 dim 2.2 1.7 2.2 1.7 group weiyan1 fill group N3702运输巷
gen zone brick p0 5 0 0 p1 20 0 0 p2 5 30 0 p3 5 0 5 size 10 30 5 ratio 1.1 1 1 group weiyan2
gen zone brick p0 0 0 5 p1 5 0 5 p2 0 30 5 p3 0 0 20 size 5 30 10 ratio 1 1 1.1group weiyan3
gen zone brick p0 5 0 5 p1 20 0 5 p2 5 30 5 p3 5 0 20 size 10 30 10 ratio 1.1 1 1.1group weiyan4
gen zone reflect ori 0 0 0 norm -1 0 0
gen zone reflect ori 0 0 0 norm 0 0 -1
;=================================摩尔库伦模型=======================================
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mo mo
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prop bu 9.7222e9 sh 3.977e9 c 8e6 f 41 ran z -20 -15 ;粉砂质泥岩
prop bu 1.9933e9 sh 1.196e9 c 1.8e6 f 28ran z -15 -9 ;碳质泥岩
prop bu 2.8e9 sh 1.4e9 c 3.7e6 f 33ran z -9 3 ;7#煤
prop bu 2.2e9 sh 1.7e9 c 4.2e6 f 35 ran z 3 10 ;泥岩
prop bu 3.3ee sh 1.6e9 c 1.7e6 f 28 ran z 10 20 ;砂质泥岩
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ini density 2500
set grav 0 0 -10
;==================================定义边界条件===============================================
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ini sxx -36.2e6 grad 0 0 25e3 ran z -20 20
ini syy -14.6e6 grad 0 0 25e3 ran z -20 20
ini szz -11.7e6 grad 0 0 25e3 ran z -20 20
apply szz -17.5e6 ran z 19.9 20.1
apply sxx -36.2e6 grad 0 0 25e3 ran z -20 20
apply syy -14.6e6 grad 0 0 25e3 ran z -20 20
fix x ran x -20.1 -19.9
fix x ran x 19.9 20.1
fix y ran y -0.1 0.1
fix y ran y 29.9 30.1
fix z ran z -20.1 -19.9
plot con szz shade on
plot set rot 20 0 30
solve
save 初始地应力场90°.sav
ini xdisp 0 ydisp 0 zdisp 0
ini xvel 0 yvel 0 zvel 0
ini state 0
plot con szz shade on
;===================================开挖不支护=============================================
;
mo nu ran group N3702运输巷
plot block state
solve
save 开挖不支护90°.sav
最近一直遇到这个问题，望大家指点迷津！ 我的变形也是太少，只有40~50mm，感觉太少了，都不用支护了~ what kind of soil is this? Cohesion is 4e6? what is the unit, pascal? fix 和 apply能一起用吗 对围岩的参数进行调整，尤其是E和V 楼主做过上山巷道的支护模拟没有？ 楼主，锚注的支护做过没有？ 我也出现了这种问题，同求解 调整围岩参数，泥岩的C调小 这个本构参数是不是有问题啊？
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