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GeoResources - Mining, Tunnelling, Geotechnics, Energy - News, Events and Journal

25.06.2020 (601 Clicks)

The first Vehicle on Genoa’s new Bridge

The first vehicle crossed Genoa’s new bridge. Aboard it was Pietro Salini, chief executive of Webuild, a global leader in the construction of complex infrastructure projects that built the bridge. The crossing was the first to be made by a private vehicle as Webuild brings the bridge to completion with Fincantieri and Italferr in record time.

 

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25.06.2020 (757 Clicks)

Outotec launches new open-ended Discharge Grinding Mill Solution for high-throughput Circuits

With ore grades declining and cost pressures rising, high-throughput circuits based on very large grinding mills are becoming an increasingly attractive option in mineral concentration applications. The Outotec® Open Ended Discharge Grinding Mill (OED Mill) enables innovative and efficient high-capacity circuit designs through the removal of pulp lifters from the discharge arrangement, facilitating reductions in both CAPEX and OPEX.

 

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23.06.2020 (590 Clicks)

QRC welcomes Federal Government’s $125 Million Exploration Boost

The Queensland Resources Council has welcomed the Federal Government’s $125 million funding extension to Geoscience Australia’s Exploring for the Future (EFTF) Program.

 

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23.06.2020 (666 Clicks)

QRC welcomes QCoal’s 10-year Partnership with RFDS

The Queensland Resources Council has welcomed a 10-year partnership between QCoal Group and the Royal Flying Doctor Service (RFDS) which led to the creation of the RFDS Dental Service.
 

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23.06.2020 (615 Clicks)

Metso to deliver Pressure Filters for dry Tailings Processing to Salares Norte Gold Mine Project in Chile

Salares Norte, a Chilean greenfield project of the South-African Gold Fields company, has ordered three Metso Vertical Plate Pressure Filters with all the ancillary equipment for dry tailings processing. The order has been booked in Metso’s Q2 orders received, and the filters are expected to be commissioned in October 2022.

 

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19.06.2020 (763 Clicks)

Fugro wins Innovate UK ‘First of a Kind’ Funding to support Rail Industry Innovation

Fugro is one of the successful companies to win innovation funding from Innovate UK’s ‘First of a Kind’ (FOAK2020) competition under the theme of optimised and cost-effective rail maintenance.

 

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19.06.2020 (698 Clicks)

Nordic Mining: Significant Reduction of Process Chemicals for the Engebø Project

Nordic Mining has submitted an application to the Environment Agency for substitution of chemicals used in the ore processing for the Engebø rutile and garnet project. The planned consumption is a 99% reduction compared with the granted chemicals in the environmental permit of 2015.

 

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18.06.2020 (831 Clicks)

Bauer AG withdraws its Forecast for the Year 2020 due to the Effects of the Corona Pandemic

The Management Board of Bauer Aktiengesellschaft decided to withdraw the forecast for the 2020 financial year made on April 9, 2020 when the annual report was published.

 

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17.06.2020 (641 Clicks)

Hexagon connects Slope Stability Monitoring with Mine Operations

Hexagon’s Mining division and IDS GeoRadar, a Hexagon company, today jointly announced the mining industry’s first straightforward integration of systems for safety and radar-based slope stability hazards.

 

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16.06.2020 (634 Clicks)

The Benefits of load-bearing reinforced Soil Walls


Load-bearing reinforced soil walls can cut construction costs by up to 75% and halve build times compared with traditional solutions, while being robust and low-maintenance.

Reinforced (or mechanically-stabilised) soil is becoming a standard way of forming cost-effective walls and bridge abutments on roads and railways, instead of the more traditional options that frequently involve piling and reinforced concrete.

The approach uses layers of geogrid to reinforce soil, increasing bearing capacity and increasing resistance to differential settlement. Reinforced soil structures have lower bearing pressures, which can eliminate the need for expensive foundations.

Geogrid layers are mechanically connected to a range of facings, including modular blocks, concrete panels, gabions and crib walls, depending on the aesthetic requirements of the project. This creates strong, durable structures, requiring minimal maintenance, with design lives of up to 120 years and covered by the relevant HAPAS BBA certificates

In many cases, all of a bridge’s bank seat loading can be carried by a reinforced soil abutment. For example, we have designed temporary and permanent structures using our TensarTech systems to support loads of more than 500kN/m. If piling is needed, then the piles can be incorporated easily into the abutment fill.

A big advantage of using our durable HDPE geogrids is that they work with a huge range of materials, including non standard fills (such as selected site-won fill) and waste products such as pulverised fuel ash. This versatility can save time and money on projects, as well as reducing their carbon footprint.

Enabling safe construction of load-bearing bridge abutments on the A21

Our TensarTech TW3 modular block reinforced soil system was the ideal solution for building the load bearing bridge abutments and wing walls for overbridges at two new grade separated junctions between Tonbridge and Pembury on the A21 in Kent.

We worked with WSP to design the retaining structures for main contractor Balfour Beatty. The abutments were built using Department of Transport Type 6I/J aggregate, designed to meet bank seat loads of up to 566kN/m and to resist horizontal loads of up to 54kN. TW3 was used to build a total of 194 linear metres of abutments and 80 linear metres of wing walls up to 7.6m high. It was also used to build a 60m long, 3.6m high retaining wall on the route.

Aside from technical performance, Balfour Beatty chose TW3 because traffic flow had to be maintained throughout the works. TW3’s modularity meant it could be built in the limited space available, without heavy lifting equipment or propping, and with minimal disruption to road users.

Tensar's TensarTech Wall and Slope Systems

With over 30 years of construction knowledge, design experience and innovative geogrid products, our TensarTech permanent and temporary retaining wall and slope systems provide a number of facing types and construction options to suit the structure’s end use, location and required design life.

Our retaining wall solutions include precast concrete, dry-laid modular block systems (with the option of adding architectural, masonry or brick finishes); precast concrete panels; gabion and crib walls; and robust units suitable for aggressive marine environments. Our reinforced soil slope solutions can create vegetated slopes with angles of up to 70˚.

For more information about these systems, visit the Soil Retaining Walls and Reinforced Slopes section of our website.

Also, make sure to check out our next Tensar Academy Webinar on the subject of 'The Use of Non-Standard Fills in Reinforced Soil Highways Structures' which will be held on 2nd July at 11am BST. More information: here

Source: Tensar/Andrew Lees



Tensar, international, geotechnics, soil, reinforcemen, geosynthetic, cost reduction, webinar

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23.12.2022 

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23.12.2022 

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