Lap joint box for drilling dam drainage hole

The utility model discloses a lap joint box for drilling a dam drain hole, which comprises a drain hole arranged in a concrete block, an upper layer protective cover and a lower layer protective cover, the upper layer protective cover and the lower layer protective cover are covered above the drain...

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Bibliographic Details
Main Authors HU YUNMING, ZHU HAIXIA, TANG XUEJUAN, YUAN QIONG, ZHAO YONGGANG, LI JING, WANG YU, LI RUIQING, TANG HU
Format Patent
LanguageChinese
English
Published 24.01.2023
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
SOIL SHIFTING
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Summary:The utility model discloses a lap joint box for drilling a dam drain hole, which comprises a drain hole arranged in a concrete block, an upper layer protective cover and a lower layer protective cover, the upper layer protective cover and the lower layer protective cover are covered above the drain hole, and the lower layer protective cover is positioned on the inner side of the upper layer protective cover; and the upper-layer protective cover and the lower-layer protective cover are fixed on the concrete block. A protection space is formed above a drainage hole in a previous pouring concrete block through a matching structure of the upper-layer protection cover and the lower-layer protection cover, and meanwhile, a lap joint foundation is provided for a next pouring concrete block; the drainage holes in the next concrete block can be communicated with the drainage holes in the previous concrete block by drilling the lap joint box below, so that the drainage holes are sectionally implemented along with a pou
Bibliography:Application Number: CN202222625780U