Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels › E21F 16 - Drainage
Patents for E21F 16 - Drainage (1,138)
11/2006
11/01/2006CN2833115Y Integrated pipe sewer water-collecting well
10/2006
10/11/2006CN2825752Y Automatic dredging and dehydrating equipment for mine sump
09/2006
09/06/2006CN2813895Y Mine underground horizontal submerged pump station
08/2006
08/23/2006CN2809221Y Automatic dredging treatment equipment for fine coal slime in mine sump
08/23/2006CN1821548A Mine natural disaster simulating system
08/16/2006CN1818343A Instant self-adaptive ventilating draining method and rotating system for preventing gas permeable mineral accident
07/2006
07/27/2006US20060165489 Structure of intermediate wall of three arch excavated tunnel and method for constructing the same
05/2006
05/24/2006CN1776196A Method and system for accessing subterranean deposits from the surface
05/11/2006US20060096755 Method and system for accessing subterranean deposits from the surface
05/03/2006CN1766289A Centralized water discharge apparatus and method for tunnelling
03/2006
03/01/2006CN2761847Y Reduced mining area water sump pump room
02/2006
02/22/2006CN1737337A Water preventing method for mine in structure of thin base rock and thick loose aquifer
02/01/2006CN1727636A Method and system for accessing subterranean deposits from the surface
01/2006
01/25/2006EP1619352A1 Method and system for accessing subterranean deposits from the surface
12/2005
12/28/2005CN1714227A Structure of intermediate wall of three arch excavated tunnel and method for constructing the same
12/20/2005US6976533 Method and system for accessing subterranean deposits from the surface
11/2005
11/09/2005EP1131535B1 Method and system for accessing subterranean deposits from the surface
10/2005
10/05/2005CN1676879A Mine water sump duff fluid automatic cleaning and treating method and apparatus
09/2005
09/07/2005CN2723683Y Emergency water discharging device for mine
08/2005
08/02/2005CA2447254C Well cavity positioning method
06/2005
06/28/2005CA2441667C Method and system for accessing subterranean deposits from the surface
06/23/2005WO2005040555A8 Drainage membrane and installation method
05/2005
05/12/2005US20050097845 Device and a method for drainage of water from rock caves
05/11/2005CN2699026Y External cooling and water supply device of water pump in high temperature environment
05/11/2005CN2699017Y Water supply device of water pump with big hydrodynamic value in inclined roadway
05/06/2005WO2005040555A1 Drainage membrane and installation method
05/04/2005EP1528222A1 Process to prevent the formation of scale deposits in tunnel drainage systems
02/2005
02/08/2005CA2441672C Method and system for accessing subterranean deposits from the surface
02/08/2005CA2441671C Method and system for accessing subterranean deposits from the surface
02/02/2005EP1015734B1 Waterproof cladding
12/2004
12/29/2004CN2667164Y Pressure releasing automatic water discharger
12/22/2004CN2665361Y Tunnel dynamic water drainage pipe assembly
10/2004
10/13/2004CN2648073Y Trackless draining device for incline well
10/13/2004CN2648072Y Submersible and non-submersible dual-purpose draining device
09/2004
09/15/2004CN2641290Y High-lift main water drainage equipment for mine use
09/01/2004CN2637736Y Sealing type rubber plastic composite water drain board
08/2004
08/25/2004CN2635921Y Water drainage device for basement
08/04/2004CN2630499Y Circular truncated cone convex drainage board
07/2004
07/13/2004US6761504 Waterproof cladding construction and method of providing the same
06/2004
06/10/2004WO2004048754A1 Structure of intermediate wall of three arch excavated tunnel and method for constructing the same
05/2004
05/11/2004US6732792 Multi-well structure for accessing subterranean deposits
05/11/2004CA2273100C Silicon carbide reinforced silicon carbide composite
04/2004
04/28/2004CN2613589Y Installation structure for tunnel pump station
04/21/2004CN2612800Y Pump house water-absorbing well
03/2004
03/10/2004EP0946460B1 Silicon carbide reinforced silicon carbide composite
02/2004
02/19/2004US20040031609 Method and system for accessing subterranean deposits from the surface
02/10/2004US6688388 Method for accessing subterranean deposits from the surface
02/10/2004CA2350504C Method and system for accessing subterranean deposits from the surface
12/2003
12/30/2003US6668918 Method and system for accessing subterranean deposit from the surface
10/2003
10/08/2003EP1350922A1 Device for draining, insulating and waterproofing of a tunnel
06/2003
06/04/2003EP1316673A2 Method and system for accessing subterranean deposits from the surface
05/2003
05/13/2003US6561288 Method and system for accessing subterranean deposits from the surface
01/2003
01/22/2003EP1144284B1 Installation for storing of natural gas
12/2002
12/18/2002EP1267035A1 Method for constructing underground waterproof tunnels with a concrete inner shell
11/2002
11/20/2002EP1258596A1 Method for refurbishing a tunnel drainage system
11/12/2002US6478085 System for accessing subterranean deposits from the surface
10/2002
10/17/2002US20020148647 Method and system for accessing subterranean deposits from the surface
10/17/2002US20020148613 Method and system for accessing subterranean deposits from the surface
10/17/2002US20020148605 Method and system for accessing subterranean deposits from the surface
09/2002
09/26/2002US20020134546 Method and system for accessing subterranean deposits from the surface
08/2002
08/27/2002US6439320 Wellbore pattern for uniform access to subterranean deposits
07/2002
07/17/2002CN2500807Y Improved drain-hose
07/10/2002CN2499577Y Walking type ditcher for mine
04/2002
04/09/2002US6368018 Installation for storing of natural gas
03/2002
03/19/2002US6357523 Drainage pattern with intersecting wells drilled from surface
01/2002
01/30/2002CN1333858A Method and system for accessing substerranean deposits from the surface
10/2001
10/17/2001EP1144284A1 Installation for storing of natural gas
09/2001
09/12/2001EP1131535A2 Method and system for accessing subterranean deposits from the surface
08/2001
08/28/2001US6280000 Method for production of gas from a coal seam using intersecting well bores
08/23/2001US20010015574 Method and system for accessing subterranean deposits from the surface
08/02/2001US20010010432 Method and system for accessing subterranean deposits from the surface
06/2001
06/12/2001US6245424 Silicon carbide reinforced silicon carbide composite
06/07/2001US20010002969 Installation for storing of natural gas
04/2001
04/11/2001EP1091088A2 Tunnel drainage system
01/2001
01/04/2001WO2000031376A3 Method and system for accessing subterranean deposits from the surface
09/2000
09/13/2000EP1035300A1 Drainage System for use in tunnels
09/09/2000CA2265104A1 Drainage system for tunnels
07/2000
07/05/2000EP1015734A1 Waterproof cladding
06/2000
06/29/2000DE19960988A1 Tunnel drainage along tunnel wall comprizes slotted pipe as unit with floorplate and demarcated by higher upright plastics part and embedded in filter gravel.
06/02/2000WO2000031376A2 Method and system for accessing subterranean deposits from the surface
06/02/2000CA2792184A1 Method and system for accessing subterranean deposits from the surface
05/2000
05/10/2000CN2377352Y Semi-seepy hose
03/2000
03/15/2000EP0985800A1 Drainage device for waterproofing lining
02/2000
02/03/2000WO2000005487A1 Waterproof cladding
12/1999
12/22/1999CN1239468A Silicon carbide reinforced silicon carbide composite
12/09/1999WO1999062794A1 Installation for storing of natural gas
12/08/1999CN2352676Y Placing filling-up slurry and water-removing apparatus for mine
10/1999
10/20/1999EP0950641A2 Tablets and method for preventing or diminishing formation of deposits in water collection systems for construction works
10/06/1999EP0946460A1 Silicon carbide reinforced silicon carbide composite
03/1999
03/11/1999DE19738488A1 Surface-water drainage equipment in mines and tunnels
11/1998
11/24/1998US5840221 Process for making silicon carbide reinforced silicon carbide composite
07/1998
07/29/1998EP0855494A1 Flexible sealing joint for drain slots in tunnel walls
06/1998
06/11/1998WO1998024737A1 Silicon carbide reinforced silicon carbide composite
02/1998
02/25/1998CN1174282A Speical large well for exploitation of placer mine
02/25/1998CN1174281A Exploitation of placer mine by means of special tunnel and drainage method
09/1997
09/10/1997CN1158938A Drainage and construction method for building subway
10/1996
10/23/1996EP0738825A1 Plastic drain
10/10/1996DE19512119A1 Device for draining hollow space surrounded mountain layers
07/1996
07/17/1996EP0722038A1 Tunnel drainage system
11/1995
11/28/1995US5470178 Insulating tunnel liner system
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