Gob-side entry retaining mass concrete curing device

The utility model discloses a gob-side entry retaining mass concrete curing device which comprises a plurality of steel pipes, fine holes are evenly distributed in the outer portion of each steel pipe, one end of each steel pipe is sealed and penetrates into a concrete wall, the other end of each st...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LEI PINGBO, ZHANG WUTAO, GAO YANLIANG, YAN JINFENG, YIN FENGGUI, WANG HUWEI, SHI YUAN, LIU CHAO, CHEN XIANWEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	PERFORMING OPERATIONS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER TRANSPORTING WORKING CEMENT, CLAY, OR STONE
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