Device and method for confined water stratum automatic water sealing post-grouting blockage

The invention relates to a device and method for confined water stratum automatic water sealing post-grouting blockage. The device comprises a drilling rod (7), and the interior of the drilling rod (7) is provided with a hollow channel. The device is characterized in that a movable sealing structure...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LIU YAOHUI, YANG PING, PAN YAFEI, HUANG YEDI, YU LU, WANG MUCHEN, LI ZHICHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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