| Patents for E21F 16 - Drainage (1,138) |
|---|
| 06/15/2011 | CN201865706U Adjustable coal slime clearing machine |
| 06/15/2011 | CN102094677A Emergency equipment for adverse-slope tracking water drainage and silt discharging in tunnel construction |
| 06/15/2011 | CN101975087B Mine water overall treatment utilizing technology |
| 06/01/2011 | CN201851369U Device for increasing water displacement of suction well |
| 06/01/2011 | CN201851157U Pneumatic automatic drainage device for coal mine |
| 06/01/2011 | CN201851150U Drainage device of gas extraction and drainage pipe |
| 06/01/2011 | CN102080568A Method for reducing water pressure of covering layer of mine transferred from opencast mine to underground mine |
| 05/25/2011 | CN201843641U Full-automatic gas-water separation drainer |
| 05/18/2011 | CN102061939A Automatic drainer |
| 05/18/2011 | CN102061920A Exploring method of water liberation working surface of water-enriched mine area |
| 05/18/2011 | CN101613501B Material on tunnel drainage layer |
| 05/11/2011 | CN201826892U Movable pump station for mine underground drainage |
| 05/11/2011 | CN102052082A Implosion type expansion plugging bag |
| 05/11/2011 | CN101555803B Method for preventing accumulation of downhole floating coal of coal mine |
| 05/04/2011 | CN201818329U Negative pressure automatic water discharging device for gas drainage pipeline |
| 05/04/2011 | CN201818328U Advanced water detecting water discharging safety device for tunnel excavation |
| 05/04/2011 | CN101294499B Double-function vacuum apparatus for extracting mash gas and lifting groundwater for coal mine safety |
| 04/27/2011 | CN201810346U Real-time automatic dredging device for coal-mine underground water sump |
| 04/27/2011 | CN201810345U Sludge discharging system of mine sump |
| 04/27/2011 | CN201809853U Drainage automobile for vertical deep-well operation |
| 04/20/2011 | CN101435342B Tunnel ring direction drainpipe equipped with strip heat-insulating layer |
| 04/13/2011 | CN201794616U High-lift submersible pump vertical shaft suspension device |
| 04/13/2011 | CN201794615U Flat tube impermeable water pumping device |
| 04/13/2011 | CN201794614U Mining drainage automatic-control cabinet with microcomputer time control |
| 04/13/2011 | CN201794613U Mine sump sludge blocking device |
| 04/06/2011 | CN102003209A Moving pump station for underground drainage of coal mine |
| 03/16/2011 | CN201763396U Apparatus for combined tour inspection on draining pumps below high-speed rail and of tunnel and generating set of pumping station |
| 03/16/2011 | CN201763393U Full-automatic overflow device of a methane gas extracting high drilling-yard drilling-hole |
| 03/16/2011 | CN201763392U Gas pipeline discharging device |
| 03/16/2011 | CN201763391U Submersible crawler-type gas locking pumper |
| 03/16/2011 | CN201763390U Coalmine cooling water processing system |
| 03/16/2011 | CN201763377U Gas and water extraction device and system |
| 03/02/2011 | CN201753616U Mine drainage monitoring and protecting device |
| 02/23/2011 | CN101979838A System for forecasting mine water regime and intelligently controlling drainage |
| 02/16/2011 | CN201747405U Pressure water elevator |
| 02/16/2011 | CN201747404U Sand-seal water-filtering system for underground tailing fill |
| 02/16/2011 | CN201747399U Pipeline hydraulic drainage device |
| 02/16/2011 | CN201747398U Continuous negative pressure automatic water drainage device |
| 02/16/2011 | CN101975087A Mine water overall treatment utilizing technology |
| 02/16/2011 | CN101975086A Full-automatic overflow device for gas extraction by drill holes in high-positioned drill site |
| 02/09/2011 | CN201738953U Whole set drainage device for emergency rescue of mine water trouble |
| 02/09/2011 | CN101967994A Tunneling early water detecting and releasing safety device |
| 02/02/2011 | CN201730638U Parallel walking drainage device |
| 02/02/2011 | CN101963070A Drain device for mine gas extraction system |
| 01/26/2011 | CN201723252U Quick-connection drainage rubber pipe for coal mine rescue |
| 01/26/2011 | CN201723251U Vertical shaft water intercepting and guiding device |
| 01/19/2011 | CN201714426U Coal seam gob tunnel initial-stage reinforcing and supporting system |
| 01/19/2011 | CN101949158A Hydraulic sump cleaning vehicle |
| 01/12/2011 | CN201705390U Wind-leakage-proof drainage system used for underground fan room |
| 01/12/2011 | CN201705386U Self-luminescent pipeline for coal mine |
| 01/12/2011 | CN201705355U Composite well wall of water guide release type vertical well |
| 01/05/2011 | CN201696090U Automatic drainer for pumping gas in coal mine |
| 01/05/2011 | CN101936181A Automatic sludge discharging system for mine sump |
| 12/29/2010 | CN201687519U Centralized rapid drainage device for downward drainage drilled holes |
| 12/22/2010 | CN101922306A Underwater crawler-type gas shutting pump truck |
| 12/22/2010 | CN101922302A Fault processing method of high pressure water enrichment area |
| 12/15/2010 | CN101915122A Construction method of underground large water-flow mine emergency water sump |
| 12/15/2010 | CN101915121A Mine water disaster emergency rescue set drainage facility |
| 12/15/2010 | CN101914930A Coal mine underground sump cleaner |
| 12/08/2010 | EP2257691A1 Automatic flooding protection for underground ventilation ducts |
| 12/08/2010 | CN101476486B Automatic monitoring system for down-hole central pumping room drainage |
| 12/01/2010 | CN101509396B Water position slurry clearing and dugging machine for coal mine |
| 11/24/2010 | CN201650362U Maintainable tunnel drainage system |
| 11/24/2010 | CN101892862A Full tailing filling method in large goafs |
| 11/17/2010 | CN201635766U Automatic switch for roadway drainage |
| 11/17/2010 | CN201635762U Automatic water drainage device for coal mine gas extraction pipe |
| 11/03/2010 | CN201620915U Karst tunnel reverse slope drainage constant pressure controlled drainage device |
| 11/03/2010 | CN201620914U Imitated heart structure coal mine drainage system |
| 10/27/2010 | CN201615020U 井下排水剩余能量的利用装置 The remaining energy use means of underground drainage |
| 10/27/2010 | CN101871348A Water-conducting and pressure-releasing type composite well wall of vertical shaft and construction method thereof |
| 10/20/2010 | CN201610761U 通用型气动式自动放水装置 Universal pneumatic type automatic drainage device |
| 10/20/2010 | CN201610760U 自动放水装置 Automatic drainage device |
| 10/20/2010 | CN101864990A Water intercepting and conducting device for shaft of vertical well |
| 10/13/2010 | CN201606271U 一种固定式水泵冗余启动信号自动转换装置 A fixed-type pump start signal automatic conversion device redundancy |
| 10/13/2010 | CN201606104U 自动放水装置 Automatic drainage device |
| 10/13/2010 | CN101858227A Device for intensively and fast draining water in downward drainage drill hole |
| 10/13/2010 | CN101413401B Method for discharging water and slag of coal mine deep hole |
| 10/06/2010 | CN201599058U 一种矿山立井排水抢险救援设备快速安装平台 One kind of mine rescue equipment Shaft drainage quick installation platform |
| 10/06/2010 | CN201599050U 负压自动放水装置 Negative automatic drainage device |
| 09/22/2010 | CN101839147A Siphon sluicing method |
| 09/15/2010 | CN201581928U Intelligent drainage device in subway tunnels |
| 09/15/2010 | CN201581927U Water drainage system based on downward drainage borehole |
| 09/15/2010 | CN201581917U Novel water-coal discharger of gas forepumping pipeline |
| 09/01/2010 | CN201568081U Device for realizing reliable communication and provision in pit |
| 09/01/2010 | CN101403316B Down-hole sluice valve installation method for straight-through type drainage hole of high pressure water tap |
| 08/18/2010 | CN201554497U Emergency equipment for counter-slope tracking drainage and dredging in tunnel construction |
| 08/18/2010 | CN201554496U Automatic drainer |
| 08/11/2010 | CN201548538U Gas drainage detector and water remover thereof capable of removing water automatically |
| 08/11/2010 | CN201546757U Water collection and drainage system for shaft cylinder wall |
| 08/11/2010 | CN201546756U Mining water channel |
| 08/11/2010 | CN101798939A Maintainable tunnel drainage system |
| 08/04/2010 | CN201539277U Automatic water drainage device on splitter in gas drainage system of coal mine |
| 08/04/2010 | CN101793040A Dredging loader for water sump |
| 07/14/2010 | CN201526342U Independent double-drainage system at bottom of heavy water burst mine |
| 07/14/2010 | CN101775980A Quick drainage and hole sealing gas parameter testing system |
| 07/07/2010 | CN201521316U Coal bed down hole water draining, extracting and discharging device |
| 06/30/2010 | CN201517426U Coal mine underground auto-moving dredging device |
| 06/23/2010 | CN201513200U Negative-pressure adjustable low-position water-inflow large-displacement automatic slag discharging and water draining device |
| 06/09/2010 | CN201502401U Automatic drainage system of cable tunnel |
| 06/09/2010 | CN101726572A Gas drainage detection device and water removing device capable of automatically draining water |