Chinese translation for "导洞（导坑）"

pilot tunnel

Related Translations:

导坑:  approach pitdrift headingpilot driftpilot holepilot tunnelpilottunnel

中央导坑:  centre drift

导坑尺寸:  size of heading

横导坑:  cross cut

隧道导坑:  heading pilot tunnel

导坑底板:  pilot tunnel floor

平行导坑:  parallel adit

下部导坑:  bottom drift

底导坑:  bottom gangwaybottom gatebottom heading

导坑法:  pilot tunnel methodpioneer drift method

Similar Words：

"导电作用" Chinese translation, "导电阱" Chinese translation, "导钉" Chinese translation, "导钉牵引术" Chinese translation, "导洞" Chinese translation, "导洞法" Chinese translation, "导洞掘进" Chinese translation, "导洞掘进法" Chinese translation, "导洞掘进工" Chinese translation, "导洞开采" Chinese translation