Ore pass enlargement construction method

The invention discloses an ore pass enlargement construction method. The method comprises the steps that firstly, like the traditional construction scheme, a small-diameter well is drilled; secondly, a part with a certain height H above the bottom of the well is selected and enlarged from top to bot...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	PENG WEI, TU TAO, CHAO WENKAI, LI ZEYANG, PAN GUANGJUN, JIANG JIABAO, LI XIAOCHENG, HUANG ZESHI, ZHOU ZHENGBAO
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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