Recovery method of underground mine goaf remaining studs

The invention discloses a recovery method of underground mine goaf remaining studs. The recovery method comprises the following steps that an ore removal roadway is tunneled into a stub (16) on one side of a middle section transportation roadway (1) to reach an ore body hanging wall, and the top of...

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Bibliographic Details
Main Authors WANG WEIPING, LI HONGFEI, LI PENGCHENG, SUN GUOQUAN, WANG YUBO, LIU SHUAI, XIAO YIGAI, LI NING
Format Patent
LanguageChinese
English
Published 27.10.2020
Subjects
AMMUNITION
BLASTING
EARTH DRILLING
FIXED CONSTRUCTIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
MINING
MINING OR QUARRYING
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
WEAPONS
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Summary:The invention discloses a recovery method of underground mine goaf remaining studs. The recovery method comprises the following steps that an ore removal roadway is tunneled into a stub (16) on one side of a middle section transportation roadway (1) to reach an ore body hanging wall, and the top of the ore removal roadway is expanded by adopting a fan-shaped medium-length hole to form a horn-mouth-shaped bottom structure; a cutting raise (12) and a pedestrian ventilation raise (3) are arranged in the stud pillar hanging wall ore rock contact face and the footwall surrounding rock respectivelyand communicate with an upper middle section air return roadway, layered connection ways (9) are tunneled in the pedestrian ventilation raise (3) in the vertical direction at intervals of a certain height to reach the stud pillar footwall boundary, the operation links that upward parallel blast holes (11) are drilled layer by layer in circulating mode one by one from bottom to top, charging blasting, forced ventilation an
Bibliography:Application Number: CN202010746889