Tunnel

If a tunnel is going to be long, multiple shafts at various locations may be bored so that entrance to the tunnel is closer to the unexcavated area.

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The Tensar Corporation, Patent Owner, ATLANTA, GA

e21d shafts; tunnels; galleries; large underground chambers 4 12 . subclasses. top owners . b29c shaping or joining of plastics; shaping of substances in a plastic ...

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Heading Machine for Mining The Ores (EBH120) - Roadheader

EBH120 Roadheader Coal Mining Machine - YouTube. EBH120 Roadheader, mining machine big capacity roadheader for mining ores ebh 120. EBH120 boom type road header is our newly developed small size mining ...

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state the purposes of a shaft in mining - futuretelsa.co.za

Mining is the extraction of valuable minerals or other geological materials from the earth usually .. Mining in the United States became prevalent in the 19th century, and the . Drift mining utilizes horizontal access tunnels, slope mining uses diagonally

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US4929123A - Method for building large span tunnels by means

E21D — SHAFTS; TUNNELS; GALLERIES; ... by providing such a method for building large span tunnels, through poor mechanical characteristics rocks, ...

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E21D 5 - Lining shafts; Linings therefor - Patents Sitemap

Patents for E21D 5 - Lining shafts; Linings therefor (494) ... CA2688311A1 Steel liners for tunnels : 06/08/2011: CN201857971U Vertical shaft of ore bed of salt rocks :

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GB2013757A - Improvements relating to tunnelling

E21D — SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS; ... Improvements in or relating to linings for tunnels and shafts JPS5320508A (en)

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Mining Roadheader, Mining Roadheader Suppliers and

EBZ series Roadheader suits for mechanized production in coal mine and tunnel works , our EBZ120 , EBZ160 ,EBZ200 , EBH120 roadheader enjoy a good reputation owning to its efficiency and practibility .

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Ox Engineering Pty Ltd - aubiz.net

B - earth or rock drilling (mining, quarrying e21c; making shafts, driving galleries or tunnels e21d); obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells: Main group code: 1 - percussion drilling (drives used in th

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CPC COOPERATIVE PATENT CLASSIFICATION E FIXED CONSTRUCTIONS

e21d cpc cooperative patent classification e fixed constructions earth drilling; mining e21 earth drilling; mining e21d shafts; tunnels; galleries; large underground chambers (soil-

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e21d shafts tunnels galleries large - muntiparaisofoundation.org

e21d shafts tunnels galleries large. Home; e21d shafts tunnels galleries large; Related. e21d shafts tunnels; tunnels amp amp shafts jacking pipes brochure;

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materials for mining machine main shaft

CPC Definition E21D SHAFTS; TUNNELS; GALLERIES; LARGE . Drilling or cutting machines for mining or quarrying. E21C . Methods, materials and apparatuses for lining a shaft, regardless of the method of .. Under this main group is also classified the use of

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CPC COOPERATIVE PATENT CLASSIFICATION E FIXED

precedence; specially for shafts E21D 5/00; {driving shields in combination with means for lining the tunnel E21D 9/06}; lining pressure water galleries, linings therefor E02B 9/06) 11/003 . {Linings or provisions thereon, specially adapted for traffic tu

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E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining

Sitemap › E21 - Earth or rock drilling; Mining › E21D - Shafts; Tunnels; Galleries; Large underground chambers › E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection.

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US6793441B2 - Tunnel waterproofing method - Google

E21D — SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS; E21D11/00 — Lining tunnels, galleries or other underground cavities, …

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e21d shafts tunnels - Roadheaders

CPC Definition - E21D SHAFTS; TUNNELS; … Methods or apparatus for making or lining tunnels, galleries or large underground chambers, using underground mining methods only, i.e. not involving disturbance of the ground surface.

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DE3127311C1 - Apparatus for driving a tunnel - Google Patents

e21d — shafts; tunnels; galleries; large underground chambers E21D9/00 — Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries E21D9/06 — Making by using a driving shield, i.e. advanced by p

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drive-shaft tunnel - English-French Dictionary - Glosbe

en Method and rig for driving tunnels, galleries, shafts or the like said rig having a movable base unit (2) ... making shafts, driving galleries or tunnels E21D); OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

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CPC Definition - E21D SHAFTS; TUNNELS; GALLERIES;

Methods or apparatus for making or lining tunnels, galleries or large underground chambers, using underground mining methods only, i.e. not involving disturbance of the ground surface. Techniques and tools for stabilising such underground constructions ag

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EXCEL MINING SYSTEMS, INC., Patent Owner, BIRMINGHAM, AL

View EXCEL MINING SYSTEMS, INC.'s, BIRMINGHAM, AL, patent portfolio profile on Patent Buddy. ... E21D SHAFTS; TUNNELS; GALLERIES; ... [E21D] 4534680 Combination expansion shell and resin secured mine roof anchor assembly Expired Nov 01, 84 Aug 13, 85 [E21

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DE2908746A1 - Verfahren zum verfestigen und

DE2908746A1 - Verfahren zum verfestigen und abdichten von geologischen und geschuetteten gesteins- und erdformationen - Google Patents

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Lining tunnels, galleries or other underground cavities, e

Lining tunnels, galleries or other underground cavities, e.g. large underground chambers and linings therefor and making such linings in situ, e.g. by assembling (E21D11) E Fixed constructions (158735)

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Roadheader For Sale|Roadheader manufacturer in China

At KAMY we mainly manufacture Roadheaders ranging from cutting power 75kw upto 300kw, Coal loader, Rock loader for mine, Roadway backfilling machine, Hydraulic nuts, Water-jet cutting machine and Super-pressure pump, Hydraulic brake, Cutting bits for mine

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EBZ200 Roadheader for coal mining in Poland-Roadheader for

In July 2015, Xinjiang Jiugan Peng Mining Co., Ltd rented one EBH120 roadheader machine for the construction of Wuqia county copper mine tunnel. The tunnel had copper and a small amount of limestone, the roadway section is 18 square meters, the average fo

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timbering underground mining tunnels galleries

Jul 01, 2018· Underground gold seams are also mined through vertical shafts and horizontal adits or tunnels, although different excavation patterns, such as room Mining involves unique, mobile and sometimes massive equipment, including vehicles, drill . m

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