Thick seam large mining height working face gob-side entry retaining method

The invention discloses a thick seam large mining height working face gob-side entry retaining method, wherein a flexible yield airbag is installed on the deformed space retained on the top part of the filling body besides the lane; the height of the filled airbag is equal to the prediction value of...

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Bibliographic Details
Main Authors LU GUOZHI, WANG GANG, SONG ZHENQI, TANG JIANQUAN, WEN ZHIJIE, LI WEI, CUI BAOCHUN, SHI YONGKUI
Format Patent
LanguageChinese
English
Published 17.08.2011
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
SHAFTS
TUNNELS
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Summary:The invention discloses a thick seam large mining height working face gob-side entry retaining method, wherein a flexible yield airbag is installed on the deformed space retained on the top part of the filling body besides the lane; the height of the filled airbag is equal to the prediction value of the sinking quantity of the top plate; the airbag is filled with air, the inflation pressure is 3MPa; a one-way decompression valve is installed on the bag body and the decompression pressure is 4MPa. The flexible yield airbag is arranged, thus on the one hand, effectively protecting the filling body besides the lane and achieving the purpose of gob-side entry retaining, and on the other hand, preventing the coal in the gob from spontaneous combustion, ensuring safe production and simultaneously improving the mining coefficient of the coal.
Bibliography:Application Number: CN20091231527