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english(30) deutsch(32) GeoResources Zeitschrift & Journal
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GeoResources Journal for Resources, Mining, Tunnelling, Geotechnics, Equipment and Energy

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GeoResources Journal 3-2015

11. November 2015
( 73947 Clicks / 59833 Downloads )

ISSN: Print 2364-8422 / Online 2364-8430

#Brummermann, Katrin #König, Manfred

We are pleased to present to you the GeoResources Journal issue 3-2015.

Here is the table of contents. To download the GeoResources Journal - please click on the cover!

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Citation     Page: 5–6

The Fehmarnbelt Tunnel: more than just an Infrastructure Project

In 2008, Germany and Denmark signed a state treaty for the construction of a Fehmarnbelt tunnel with connecting rail and road links. Following several years of planning, the approval procedures are now drawing to a close. The Fehmarnbelt Tunnel will close the final gap between Scandinavia and Continental Europe.

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Citation     Page: 7–15

Creative geotechnical Solutions for Renovating the Dresden Old Masters Picture Gallery in the Zwinger – Part 2: Injections for Enlarging a Tunnel

Renovating the Old Masters Picture Gallery in the east wing of the Dresden Zwinger is also challenging in geotechnical terms. Part 2 of this report deals with injections required for ground consolidation for a tunnel enlargement. The tunnel is intended to serve as an underground passage for visitors entering the Picture Gallery. The tricky subsoil, conservation, ongoing activities in the museum and existing lines and cables represented the challenges to be faced.

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Citation     Page: 16–28

Gotthard Base Tunnel: The Sedrun Shaft Hoisting Systems – Part 2: Conversion and Operating Phase

The 57 km long Gotthard Base Tunnel was produced in five contract sections with three intermediate points of attack. The Sedrun intermediate point of attack consists of two blind shafts some 820 m deep, which could only be reached via a roughly kilometre long access tunnel. The complex, tricky general conditions and the high demands placed on the availability of the shaft hoisting systems were and still are a particular challenge for building and operating the facilities. This second part of the report concentrates on dismantling and modifying the shafts (Lot 356) and the functions of the ultimate hoisting systems (Lot D) of the Sedrun shafts for the rail tunnel’s operating phase. This called for a well harmonized logistics and installation concept. Part 1 dealt with the building and operation of the shaft hoisting systems as a hoisting, material and man riding shaft and installations for cooling the air in the Faido tunnel section for the tunnel construction phase.

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Citation     Page: 29–38

Gotthard Base Tunnel: Planning and Executing the Installations for the Sedrun Shaft I

The Gotthard Base Tunnel’s Sedrun intermediate point of attack with its two blind shafts represents a logistical and technical challenge. This report describes how two interesting parts of the contract for Shaft I were tackled. In order to avoid an air short circuit, Sedrun Shaft I was provided with a hydraulically operated, two-part closing flap with apertures for the two guide sections at the shaft head. The particular challenge in developing the closing flap related to its required tightness or rather the maximum permitted leakage volume. The two steel guide sections posed special problems for planning, manufacturing and assembly. The anchor brackets had to comply with the static and structural requirements and provide a manageable guide length for standardizing assembly procedures. The further requirements atypical of mining for the two guide rail sections related to the temperature-related clearance between the individual guides, which had to be absolutely complied with given climatic marginal conditions with fluctuations in temperature varying from + 40°C in summer to – 20°C in winter.

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Citation     Page: 39–43

New Teeth for the Chain Conveyor – Innovative Sprocket provides improved Efficiency and reduced Costs

Chain conveyors represent essential factors for mining mineral raw materials underground or transporting spoil in tunnelling. The Halbach & Braun Industrieanlagen GmbH has devised an innovative sprocket with replaceable toothed strips for such chain conveyors thus contributing to improved efficiency and reduced costs. This new development has been applied successfully in practice in a Chinese coal mine.

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Citation     Page: 44–47

Latest Developments in Longwall Mining Technology

Ever higher requirements from mine operators have led to numerous significant developments in longwall mining technology over the past decades. Mining companies are looking for higher productivity, longer lifetime of the equipment, higher degree of automation, full system solutions, increased safety, and equipment suitable for ultra-high or low seam applications. Being in the longwall business for more than 70 years, Caterpillar Global Mining and its predecessors have invented state-of-the-art solutions over and over again to meet those challenging demands with the overall goal of minimizing the operational costs for the operators.

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Citation     Page: 48–49

Injection Resin System passes Fire Test for Approval according to Mining Ordinance Health Provisions

Dywidag Systems International GmbH (DSI) has added a injection resin to its range of products. The injection resin recently passed the fire test to obtain the approval according to the German Mining Ordinance Health Provisions.

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