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; scram drift

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