巷道破坏
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巷道变形破坏
roadway deformation and failure
巷道变形破坏特征
course deformation characteristics
巷道变形与破坏
deformation and failure of roadways
管道破坏
pipeline damage
轨道破坏
track failure
track structure damage
隧道破坏形式
destructive form
爆破破坏分区
distinction of blasting crack zones
损坏、破坏
Damage
三软巷道
three soft drift
扒矿巷道
scraper drift
scram drift
Scram
半煤岩软底巷道
Semi Coal and Rock Roadway with Weak Floor
半煤岩巷道
Semi-coal Rock Tunnel
半圆拱形巷道
semi-circular arched tunnel
边坡下巷道
Roadway under slope
扁宽断面巷道
roadways of flat and wide cross-section
标定巷道开掘方向
Marking the Direction of Laneway
并联巷道
parallel roadway
不稳固巷道
unstable drift
采场巷道
stope drift
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