English translation for "导坑前沿支撑"

advance timbering

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：

"导坑" English translation, "导坑尺寸" English translation, "导坑底板" English translation, "导坑法" English translation, "导坑防水支撑" English translation, "导孔" English translation, "导孔, (纸带上)输送孔, 齿孔" English translation, "导孔穿孔" English translation, "导孔道" English translation, "导孔间距" English translation