| Patents for E21D 1 - Sinking shafts (447) |
|---|
| 04/17/2013 | CN202882928U Single tube freezing pipe |
| 04/17/2013 | CN202881927U Liquid nitrogen freezer for segmental freeze |
| 04/17/2013 | CN103046931A Method for forming holes of vertical shaft/pilot shaft through impact type drilling machine in impacting mode |
| 04/03/2013 | CN103016010A Shaft deepening simultaneous shaft sinking method |
| 04/03/2013 | CN101858218B Shaft sinking process for expansion well completion of mine vertical shaft with boring method |
| 04/02/2013 | CA2765758C Forming a shaft for an underground mine |
| 03/27/2013 | CN102996132A Dynamic analysis method for parameter in frozen wall formation process |
| 03/13/2013 | CN202788855U Novel tool structure for vertical shaft drill |
| 03/13/2013 | CN202788854U 15-inch hobbling cutter holder for vertical shaft drill with extra big caliber |
| 02/20/2013 | CN202745086U Drivepipe device for cotrolling frost heave and thaw collapse |
| 02/06/2013 | CN102913137A Sinking tubular steel derrick and mounting method of same |
| 01/30/2013 | CN102900374A Shaft sinking tubular steel derrick |
| 01/23/2013 | CN202689954U Novel sinking headframe for large diameter super-deep vertical shaft |
| 01/16/2013 | CN102877849A Novel tool structure of vertical shaft drill |
| 01/16/2013 | CN102182463B Inclined shaft freezing heat insulation method |
| 12/20/2012 | US20120318581 Forming a shaft for an underground mine |
| 12/19/2012 | CN202611705U Well drilling device and pumping well |
| 11/21/2012 | CN102787808A Novel large-diameter sinking headframe for ultradeep vertical shaft |
| 11/14/2012 | CN102777185A Inclined well shaft construction technology |
| 11/07/2012 | CN202520314U Rotary wellhole processor |
| 10/31/2012 | CN102758631A Freezing method of frozen wall of inclined shaft |
| 10/24/2012 | CN102748030A Construction method for treating crystal blocking of freezer |
| 10/10/2012 | CN202483578U Overlong deviated well bore freezing pipe series process device |
| 10/03/2012 | CN202467845U Hard rock hob of large-caliber vertical shaft |
| 10/03/2012 | CN202467844U Silo excavator |
| 08/30/2012 | WO2012115569A1 Method for emergency rescue of personnel during shaft sinking |
| 08/30/2012 | WO2012115568A1 Method for shaft sinking |
| 08/22/2012 | CN102644465A Backfill construction method for vertical shaft cave |
| 08/15/2012 | CN102635359A Energy-saving rapid construction method for ventilating shafts of tunnels |
| 08/01/2012 | CN102619213A Freezing apparatus with double circulating systems |
| 07/17/2012 | DE202010017762U1 Ausbilden eines Schachts für eine unterirdische Mine Forming a shaft for an underground mine |
| 07/11/2012 | CN202325524U 一种供液管拔除装置 For a liquid supply tube removal device |
| 07/11/2012 | CN102561409A Construction method for reducing frost heaving effect borne by derrick foundation |
| 07/04/2012 | CN102536246A Series connection process device for freezing pipes of pitshaft of overlength inclined shaft |
| 06/20/2012 | CN102505944A Water sealing method for replacing mud in freezing holes with slow setting cement grout |
| 06/13/2012 | CN102493809A Comprehensive shaft sinking method of positive and raising boring for vertical shaft |
| 06/13/2012 | CN102493808A Method for digging deep well manually |
| 06/07/2012 | WO2012072990A1 Improvements in liquid displacement devices |
| 05/31/2012 | US20120132469 Reamer |
| 05/23/2012 | CN102472101A 形成用于地下矿的竖井 Formed for the underground mine shaft |
| 05/23/2012 | CN102472100A 地下采矿 Underground Mining |
| 05/09/2012 | EP2449214A1 Forming a shaft for an underground mine |
| 05/09/2012 | EP2449213A1 Underground mining |
| 05/09/2012 | CN102444404A Feed pipe pulling out device |
| 05/02/2012 | CN102434165A Hard rock hob for large-caliber shaft |
| 04/11/2012 | CN202187765U Head structure of local freezer for double plastic tube |
| 03/28/2012 | EP2313613B1 Method for erecting an underground construction |
| 03/01/2012 | DE102008028997B4 Bohrverfahren und Bohrgerät zur Herstellung eines Bohrlochs in Erde und Gestein Drilling method and drill for the preparation of a borehole in soil and rock |
| 01/25/2012 | CN202125296U Rock ripper for vertical shaft |
| 01/18/2012 | CN102322265A Mechanized excavating and constructing method of surface soil freezing section of vertical shaft |
| 01/04/2012 | CN102305075A Vertical shaft construction method under unfavorable geological condition |
| 12/21/2011 | CN102287190A 一种高梯度非均质冻结壁的冻结方法 A highly inhomogeneous gradient freeze method to freeze wall |
| 12/14/2011 | CN102278116A 冬季寒冷地区制作地下冷冻墙装置及制作冷冻墙的方法 Freezing winter cold regions produced underground wall installations and production methods freeze wall |
| 11/30/2011 | CN101818644B 矿山竖井井筒一钻成井钻井法凿井工艺 Wellbore drilled into a mine shaft sinking drilling process |
| 11/24/2011 | WO2011116148A3 Systems, apparatus and methods for extraction of hydrocarbons from organic materials |
| 11/23/2011 | CN102251776A Rural well drilling machine |
| 11/09/2011 | CN102239309A Method for erecting an underground construction |
| 11/09/2011 | CN101737013B Sinking headframe double-layer sheave wheel platform system |
| 11/02/2011 | CN102230379A Saline flow detection device of freezer |
| 10/13/2011 | US20110247878 Expansion and sensing tool |
| 09/22/2011 | WO2011116148A2 Systems, apparatus and methods for extraction of hydrocarbons from organic materials |
| 09/14/2011 | CN102182463A Inclined shaft freezing heat insulation method |
| 09/07/2011 | CN201964025U 一种地源热泵埋管装置 One kind of ground source heat pump system |
| 08/17/2011 | CN201933510U Outlet shaft structure of underground factories in hydroelectric engineering |
| 07/06/2011 | CN102119262A Method for introducing a vertical shaft and shaft driving machine |
| 06/29/2011 | CN201884033U Constant-pressure compound sealing structure of mining deep well rock breaking hob cutter |
| 06/29/2011 | CN201884032U Hydraulic grab |
| 06/16/2011 | US20110139510 Apparatus and Method for Reaming a Wellbore During the Installation of a Tubular String |
| 06/01/2011 | CN102080546A Simple reverse circulation drilling rig |
| 05/18/2011 | CN101660415B Technology for constructing and stopping leakage of freezing borehole |
| 05/11/2011 | EP2318658A1 Method for introducing a vertical shaft and shaft driving machine |
| 05/10/2011 | CA2612559C Shaft plugging system |
| 04/27/2011 | EP2313614A2 Method for constructing an underground tunnel or hole to create an impervious plug for the storage of hazardous, particularly radioactive, waste |
| 04/27/2011 | EP2313613A2 Method for erecting an underground construction |
| 04/27/2011 | CN201809052U Large vertical shaft hydraulic grab |
| 04/21/2011 | WO2010127751A3 Method for erecting an underground construction |
| 03/23/2011 | CN201771510U Micro well drilling rig |
| 02/22/2011 | US7891439 Method of multistage manufacturing a ground bore |
| 01/26/2011 | CN201723226U Simple well drilling tool |
| 01/13/2011 | WO2011004442A1 Drilling device |
| 01/12/2011 | CN101943001A Rapid construction technology of hydraulic well drilling in shaft of kilometer well |
| 01/12/2011 | CN101307693B Shaft excavation machine |
| 01/06/2011 | WO2011000038A1 Underground mining |
| 01/06/2011 | WO2011000037A1 Forming a shaft for an underground mine |
| 01/06/2011 | CA2765758A1 Forming a shaft for an underground mine |
| 01/06/2011 | CA2765714A1 Underground mining |
| 12/29/2010 | CN201687480U Vertical shaft penetrating thick soft soil layer integral butting steel protecting tube |
| 11/24/2010 | CN201647818U Bivalve clip-on slurry removal grab bucket |
| 11/11/2010 | WO2010127751A2 Method for erecting an underground construction |
| 11/11/2010 | WO2010127447A1 Frozen backfill mix formulations and process for use thereof in underground mining applications |
| 11/11/2010 | CA2761155A1 Frozen backfill mix formulations and process for use thereof in underground mining applications |
| 10/13/2010 | CN201606009U 一种凿井井架双层天轮平台体系 One kind of drilling derrick double sheave platform system |
| 10/13/2010 | CN101858218A Shaft sinking process for expansion well completion of mine vertical shaft with boring method |
| 09/16/2010 | WO2010104235A1 Excavation method of underground plaza and submarine plaza using steel casing retaining wall |
| 09/16/2010 | WO2010104232A1 Shaft construction method using pipes, construction method of underground structure and tunnel construction method by the same |
| 09/01/2010 | CN101818644A Well digging process of mining vertical shaft by adopting one-drilling well completion and well drilling method |
| 08/25/2010 | CN201560764U Grab head of grab loader |
| 08/11/2010 | CN101451436B Full hydraulic grab |
| 08/04/2010 | CN201539261U Pull-out-free freezing device |
| 07/28/2010 | CN201535167U 钻注型孔口控制装置 Drill-injection orifice control device |