Isolated overburden grouting filling method for coal gangue underground emission reduction

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United States of America Patent

PATENT NO 12044125
APP PUB NO 20240102343A1
SERIAL NO

18275409

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Abstract

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An isolated overburden grouting filling method for coal gangue underground emission reduction includes determining a grouting filling key stratum according to information of a coal face; constructing a directional borehole from an underground tunnel to the inside of the grouting filling key stratum; constructing a plurality of branch holes downward in a main hole of the directional borehole; and by establishing a grouting filling system under a mine, gangue obtained from excavation gangue of the mine and gangue sorting being made into a filling slurry by means of breaking and grinding, and the filling slurry filling fractures below the key stratum through the directional borehole. The gangue generated from a mine is directly made into a filling slurry under the mine and then fills overburden mining-induced fractures, thereby achieving harmless disposal of the gangue, effectively supporting a key stratum, and controlling stratum movement and surface subsidence.

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Patent Owner(s)

Patent OwnerAddress
CHINA UNIVERSITY OF MINING AND TECHNOLOGY221116 NO 1 TONGSHAN UNIVERSITY ROAD XUZHOU CITY JIANGSU PROVINCE XUZHOU CITY JIANGSU PROVINCE 221116

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Jian Jiangsu, CN 1062 5232
Xu, Jialin Jiangsu, CN 3 3
Xuan, Dayang Jiangsu, CN 1 0

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