| Patents for E21F 16 - Drainage (1,138) |
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| 07/02/2014 | CN203685224U 用于隧道水沟的自行车式模架 Ditch the bike for the tunnel-type mold |
| 07/02/2014 | CN103899521A 一种自动间歇煤层气排水产气方法及其装置 An automatic intermittent discharge of coalbed methane gas method and apparatus for aquatic |
| 07/02/2014 | CN103899359A 一种多水泵环境下的拾音判别方法 A multi-pump pickup discriminating method environment |
| 06/25/2014 | CN203669933U 新型煤矿排水自动化监控系统 The new automated monitoring system of coal mine drainage |
| 06/25/2014 | CN203669924U 一种煤矿排水及水文监控系统 One kind of coal mine drainage and hydrological monitoring system |
| 06/18/2014 | CN203655352U 一种煤矿瓦斯抽采管的自动放水器 One kind of coal mine gas drainage pipe automatic drain filter |
| 06/18/2014 | CN203655307U 地铁区间隧道废水泵房 Subway Tunnel wastewater pumping station |
| 06/18/2014 | CN203655298U 盾构刀盘检修工作井支护装置与设备 Shield cutter repair work well support devices and equipment |
| 06/18/2014 | CN103867231A Tunnel ditch insulation structure |
| 06/18/2014 | CN103867230A Slag water drainage device for underground mine gas drainage pipeline and slag water drainage method utilizing slag water drainage device |
| 06/18/2014 | CN103867229A Coal mine large-mining-depth and next-group coal exploitation water control comprehensive treatment method |
| 06/18/2014 | CN102562152B Brine deicing device of railway tunnels |
| 06/11/2014 | CN203640770U 一种排水装置 A wastewater system |
| 06/11/2014 | CN203640769U 矿井巷道瓦斯主管道自动放水器 Mine tunnel gas main channel automatically turn on the water |
| 06/11/2014 | CN203640768U 一种煤矿井下排水结构 One kind of coal mine drainage structures |
| 06/11/2014 | CN203640767U 地漏装置 Drain devices |
| 06/11/2014 | CN203640754U 煤矿混合资源综合开采系统 Hybrid integrated coal mining system resources |
| 06/04/2014 | CN203626886U 无人值班变电站电缆隧道自动排水装置 Unmanned substation cable tunnel automatic drainage |
| 06/04/2014 | CN203626885U 水电站排水廊道固定式漏斗型塑料落水管接头 Hydropower drainage gallery fixed funnel plastic water pipe fittings |
| 06/04/2014 | CN102733851B Control method for water-containing collapse columns in mining affected areas of combined reconstructed mines |
| 05/28/2014 | CN203614130U 矿井排水系统 Mine Drainage System |
| 05/28/2014 | CN103821525A 高水位地质条件下电缆隧道快速施工方法 Geological conditions at high level fast cable tunnel construction methods |
| 05/21/2014 | CN203603972U 一种井下瓦斯管道自动排水装置 A downhole gas pipeline automatic drainage device |
| 05/21/2014 | CN203603971U 用于瓦斯抽放管道的排水装置 Gas drainage for drainage pipes |
| 05/21/2014 | CN103806939A 一种汽水分离式放水装置 One kind of soda separate drainage system |
| 05/14/2014 | CN203594470U 一种长大隧道反坡自动排水装置 One kind of long tunnel reverse slope automatic drainage device |
| 05/14/2014 | CN203594469U 一种瓦斯抽采系统的自动放水器 A gas pumping system to automatically turn on the water mining |
| 05/14/2014 | CN203594457U 一种自旋式锚杆锚固土工格栅的坎儿井隧洞加固装置 One kind of Spin Karez bolt anchoring the geogrid reinforcement means Tunnel |
| 05/07/2014 | CN103775126A 一种有地下水渗出时的洞室初期支护施工方法 A cavern there early support construction method when groundwater seeping |
| 05/07/2014 | CN103775094A 砂砾土地层中型断面输水隧洞两台阶三步开挖施工方法 Gravel layer of medium-sized section of land conveyance tunnel excavation and construction methods two stairs three steps |
| 04/30/2014 | EP2723987A2 A method for constructing a tunnel course, and structural element for use by the method |
| 04/30/2014 | CN203570354U Moving overhauling drainage device of long tailrace tunnel system for hydropower station |
| 04/30/2014 | CN203570353U Glaze water conveying system |
| 04/30/2014 | CN203570352U Drainage device used for gas pipeline |
| 04/30/2014 | CN203570345U Mine compressed air self-rescue automatic drainage device |
| 04/30/2014 | CN203570343U Transportation tunnel dedusting and cooling apparatus |
| 04/23/2014 | CN203559929U Improved orifice pipe for water probing and draining drill holes under coal mine |
| 04/23/2014 | CN203559928U Multi-level comprehensive drainage control device for mine |
| 04/23/2014 | CN103748321A A method for constructing a tunnel course, and structural element for use by the method |
| 04/23/2014 | CN103742191A Water-rich tunnel pilot long-distance large-diameter precipitation channel and construction method thereof |
| 04/23/2014 | CN103742145A Water control method for abnormal water-enriched region of coal mine |
| 04/16/2014 | CN203552035U Automatic drainage system |
| 04/16/2014 | CN103726873A Mine deposition sandstone top plate still water unwatering method and draining filtering pipe |
| 04/16/2014 | CN102817366B Prevention and treatment method for full-mechanized caving mining collapse trap area water disaster for shallow-buried ultra-thick coal seam |
| 04/16/2014 | CN102425421B Novel water control method suitable for mine shafts |
| 04/09/2014 | CN203531958U Pneumatic negative pressure water discharge device |
| 04/09/2014 | CN203531023U Water-proof and drainage integrated coiled material |
| 04/09/2014 | CN103711519A Drainage method for gas pipeline of gas power station in operation |
| 04/09/2014 | CN103711502A Construction method for improving usage rate of effective section of road tunnel |
| 04/09/2014 | CN103114644B Transverse groove walling crib provided with fixed structure and construction method thereof |
| 04/09/2014 | CN102661172B Advanced precipitation method for deep-buried tunnel |
| 04/02/2014 | CN203515597U Tunnel structure applicable to soft stratum |
| 04/02/2014 | CN103696804A Drainage technology of comprehensive coal mining working face |
| 03/26/2014 | CN103670510A Method for draining ponding in goaf by laneway casing pipe method |
| 03/26/2014 | CN103670509A Water collecting and water draining device for compressed air pipeline |
| 03/19/2014 | CN203488208U Drainage system in tunnel hole |
| 03/19/2014 | CN103643993A Emergent water draining truck for slant well roadway of coal mine |
| 03/19/2014 | CN103643968A Method for rapid construction of double-track tunnel ditch cable channel |
| 03/19/2014 | CN102635401B Negative-pressure automatic water bleeding device |
| 03/19/2014 | CN102359395B Method for plugging large-scale water-inrush burst-mud burst hole of tunnel fault |
| 03/12/2014 | CN203476394U Intelligent electric-heating ice-melting device for concealed conduit for tunnel leakage drainage |
| 03/12/2014 | CN203476393U Automatic intrinsically-safe water drainage controller for mining |
| 03/12/2014 | CN103629107A Anti-blocking throw-in type draining pump of coal-bed gas well |
| 03/12/2014 | CN103628916A Excavation construction method of high-pressure water gushing tunnel |
| 03/12/2014 | CN103628915A Dewatering and drainage method for large-section water-rich saturation fine-silt tunnel |
| 03/12/2014 | CN103628914A Low-permeability thick-layer bedrock aquifer exploring and draining method for low-angle coal seam slicing mining |
| 03/12/2014 | CN103628887A Large-section water-rich saturated fine sand railway tunnel excavation method |
| 03/12/2014 | CN102954252B Water drainer |
| 03/05/2014 | CN203463143U Integral extraction device |
| 03/05/2014 | CN103615253A Shield cutter head overhaul working well support device and equipment |
| 02/26/2014 | CN203452841U Automatic water draining device for coal mine gas extraction pipeline |
| 02/26/2014 | CN102865103B Distributed using method for mine underground water |
| 02/26/2014 | CN102587984B Distribution type water information monitoring system for underground working face of coal mine |
| 02/26/2014 | CN102383858B Improved kilometer drilling field dam system |
| 02/19/2014 | CN203441529U Shaft multiple section parallel interception device |
| 02/12/2014 | CN203429764U Absorbent fiber permeating tube and drainage device |
| 02/12/2014 | CN103573288A Pneumatic negative pressure drainage device |
| 02/12/2014 | CN102705006B Method for governing operating tunnel flood by adopting wellpoint dewatering method |
| 02/12/2014 | CN102587938B Water seepage and leakage preventability collection system for tunnel and construction method of system |
| 02/05/2014 | CN203421330U Detachable-washing double-wall sand filtering drain pipe |
| 02/05/2014 | CN203420736U Tunnel water stopping structure |
| 02/05/2014 | CN203420735U 自动放水系统 Automatic Drainage System |
| 02/05/2014 | CN103557030A Downward drilling hole draining device |
| 02/05/2014 | CN103556989A Device for implementing shaft surrounding rock water pressure measurement and limited drainage by freezing method and construction method thereof |
| 02/05/2014 | CN102261263B Monitoring system of automatic drainage device |
| 01/29/2014 | CN203412625U Underground coal mine drainage facility |
| 01/29/2014 | CN203412624U Surrounding rock drainage water guide device |
| 01/29/2014 | CN203412623U Bottom plate water drainage pumping device |
| 01/29/2014 | CN103541762A Permanent and temporary combined anti-freezing drainage structure and method for high altitude severe cold rich water tunnel |
| 01/22/2014 | CN203404102U Automatic shut-down control circuit of power water pump |
| 01/22/2014 | CN203403907U Crawler-type coal slime clearing and excavating machine |
| 01/22/2014 | CN103527245A Drainage device used for gas pumping and releasing pipeline |
| 01/22/2014 | CN103527244A Underground automatic drainage device for coal mine |
| 01/22/2014 | CN103527213A Method and device for reinforcing karez tunnel by anchoring self-rotating anchor rod on geogrid |
| 01/15/2014 | CN203394584U Water drainage concealed pipe device applicable to collapsible loess tunnel |
| 01/15/2014 | CN203394583U Continuous negative pressure automatic water discharger |
| 01/08/2014 | CN203386073U Simple automatic subway draining control device |
| 01/08/2014 | CN203384579U Thermal insulation pipeline for treating tunnel lining water damage in severe cold areas |
| 01/08/2014 | CN203383854U Buffering system for solving problem of tunnel local sudden water burst |
| 01/08/2014 | CN203383853U Buffering system for solving problem of insufficient drainage ability of tunnel central ditch |