136316 ⎘
Methods or devices for use in mines or tunnels, not covered elsewhere Dams, e.g. for ventilation
Sub-classes:GRADED UNDERGROUND PUMPED-STORAGE HYDROPOWER IN COAL MINE, CONSTRUCTION AND USING METHODS
#2GRADED PLUGGING, MONITORING AND REINFORCING INTEGRATED METHOD FOR SEPARATION STRATUM GROUTING UNDER SINGLE-SIDE OPEN CONDITIONS
#3Method of Reducing Risk to Mine Tailings Dams by Controlling Melting Rate of Snow
#4Method for Water and Moisture Management for a Mining Operation
#5Device and method for integrated control of acid wastewater plugging and discharging of abandoned mine
#6Jack for installing mine stopping
#7I-shaped water-retaining dam for underground reservoir in coal mine
#8Combined automatic anti-explosion method for gas drainage pipeline
#9Mine stopping and components thereof
#10Wall construction system
#11Barricade wall
#12Mine stopping panel and method of sealing a mine stopping
#13Artificial dam of distributed coal mine underground reservoir and its constructing method
#14Mine stopping panel and method of manufacture
#15Mine seal and method of construction for high resistance to transverse loads
#16Method of controlling ventilation in a mine entry with polymeric gel
#17Engineered mine seal
#18Mine seal with multiple mortared walls
#19Mine seal with electrically non-conductive ties
#20Method of controlling mine fires with polymeric gel
#21Mine seal with adhesive
#22Steel anchored reinforced mine seal
#23Jack for carrying and installing mine panels
#24Mine ventilation panel system
#25Safe haven wall