GeoResources Journal for Resources, Mining, Tunnelling, Geotechnics, Equipment and Energy
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06. April 2023
( 9957 Clicks / 4494 Downloads )
ISSN: Print 2364-8422 / Online 2364-8430
SHAFT BORING ROADHEADER - SAFE AND FAST
The Shaft Boring Roadheader (SBR) was developedfor the mechanized sinking of shafts in soft to medium-hard rock. Safe and fast full-bottom shaft sinking to depths of 1,600 meters.
GeoResources Journal - the international journal for resources, mining, tunnelling, geotechnics, energy - Open Access!
A close connection with nature and respectful interaction despite diversity are important keys for a turning point in climate protection.
The transition to a circular economy is unavoidable if we are to protect our climate and our environment. The conventional mining industry must become more environment friendly. Waste volumes need to be reduced and the circular economy driven forward. Products are increasingly becoming important sources of raw materials. Joined-up thinking must also mean thinking holistically by tracking the product design and production process right through to the use and re-use phase.
Building watertight with a fully bonded System – Ground Sealing at the Senckenberg Campus in Görlitz
In Germany fresh concrete composite systems are being used increasingly in order to create a reliable seal for concrete structures in areas affected by pressurised water or fluctuating water levels. This paper will explain how these systems work and how this type of solution is being used successfully for the construction project now under way on the Senckenberg campus in Görlitz, Germany.
The mining industry excavates many more kilometers of tunnel each year than the civil construction industry, but the use of tunnel boring machines (TBM) in mining has been limited in decades past. This has changed in recent years. With their circular bores, the machines have thus far been unable to tackle a larger issue for mines. Typically a flat floor is needed for mining vehicles to traverse. A novel non-circular boring machine (The Mine Development Machine (MDM) 5000) is now answering that need. Its rectangular cross section allows for use of typical mine trucks and other rubber-tired mine vehicles. It provides more useable space, and minimizes the amount of excavated rock. The machine is currently cutting an access tunnel at a silver mine in Mexico. This paper reviews the design and operation of the novel TBM, and describes possible future adaptations to provide safe, sustainable mine development.
Traditional support and reinforcement systems such as shotcrete reinforced with electro-welded mesh or fibre concrete used in underground mining are limited in their capability against dynamic loads. High-tensile meshes Minax and bolts are an alternative solution. Large-scale tests have contributed significantly to this development.
Realistic large-scale Tests on self-healing Fresh-concrete Composite Seal with swelling Nonwoven in Tunnel Construction
To avoid damage to polymeric geomembranes for tunnels in conventional construction method, an innovative fresh-concrete composite seal (FCC seal) was developed and tested in realistic large-scale trials. The function of the swelling nonwoven laminated onto the geomembrane (GMB) is to create a bond between the GMB and the concrete inner shell and to self-heal leaks in the GMB and prevent water ingress and movement behind the membrane.
Driving the Stuttgart Airport Tunnel – efficient Use of Resources using Tunnel Anchors made of high-strength Steel
For the Stuttgart Airport Tunnel of Deutsche Bahn AG, anchors made of high-strength steel were used instead of conventional anchors of rebar steel. This contributed to efficient use of resources, to a reduction in CO2, and to improvements in construction operation. It was therefore sustainable.
Tunnel inspection is essential for ensuring the safety and integrity of these vital transportation corridors. Traditional methods, such as manual visual inspections or ground-based sensors, can be time-consuming and potentially hazardous for personnel. The use of flying drones, or unmanned aerial vehicles (UAVs), offers a safe and efficient alternative for tunnel inspection. With high-resolution cameras and other sensors, UAVs can provide detailed views of the tunnel’s condition, identifying any structural defects or damage that may pose a risk to users. They can also access areas that may be difficult or dangerous for human inspection, such as the tunnel ceiling or walls. Using UAVs for tunnel inspection can improve safety, efficiency, and cost-effectiveness, making them an increasingly valuable tool for tunnel maintenance and repair.
Strabag’s Circular Construction & Technology Center (C3) at Bremen’s former oil port in Germany shall establish a regional circular economy that preserves resources and avoids carbon emissions. A comprehensive sustainability concept for soil remediation, construction and operation forms the basis for the pilot project.
Postal Logistics Hub as a Coal Mine Restructuring Project – Ukrainian-German Ideas for the Post-mining Era
The world’s energy industry is going through a period of noticeable reductions in the production and use of hard coal. These reduction rates vary from fairly radical in the EU to very flexible and gradual in large Asian economies. Nevertheless, the general trend – as determined by the climate and environmental policy of the green transition – significantly limits the life cycle of the coal industry over time. The post-mining era in sustainable coalfield areas of the world requires systematic scientific methodology, educational efforts and technological, environmental and social transformations in many of these regions. Germany’s experience in this field can provide the basis for the implementing regional transformation projects in several European coal-mining countries, notably Ukraine, and this will serve as a model for many other countries. The characteristics of the Germany and Ukrainian coalfield regions, along with individual projects aimed at transforming of coal mining enterprises, testify to the expediency of developing cooperation between the two countries through post-mining programmes. Proposed measures for the postwar recovery and development of Ukraine envisage a radical renewal of the country’s energy and mining sectors, and it is probable that success here will rely primarily on German-Ukrainian projects. This article represents one potential concept for the restructuring of the Novovolynska No. 10 coal mine in the Volyn region of Ukraine and its transformation into a postal and logistics hub.
Mining giant wants to test a sustainable technology of the Krajete GmbH for recovery of nitrogen oxides in a test plant in Chilean Atacama Desert.
Conventional shaft sinking by drilling and blasting was for many years the most hazardous of all mining operations. New techniques and technical developments have now made shaft construction work much safer and more efficient. Yet there is still room for further improvement. This paper describes the current state of the art and the experiences that have been acquired in the field of mechanical and conventional shaft sinking and presents innovative ideas along with the latest developments in this sector.
Extracting Raw Materials from abandoned mine-waste Heaps in the Free State of Saxony – the ReMiningPlus Project for the Environment-friendly Recovery of Recyclates from a Tailings Facility
The BMBF-funded project ‘r³ – Strategic metals and minerals – innovative technologies for resource efficiency’ involved the preparation of an official register, or cadaster, of the largest mining waste dumps in the Free State of Saxony. The aim of the investigations was to supply the economy with strategically relevant metals and minerals from disused mine holdings such as heaps and tailings dams. A reference example is used to describe the project’s strategy and potential.
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