underground drilling and blasting in Germany

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  • Drilling and Blasting in Underground Mining - GRT

    2021-4-1 · Drilling and blasting methods in underground mining – smooth wall blasting. Drilling in underground mining is very diverse but used for two main purposes. Firstly for exploration which aims to obtain very detailed information about the formations below ground surface. Secondly for production to facilitate the …

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  • Underground Blasting Drilling - ISO Certified

    2018-12-14 · BLASTING CONTROL FOR UNDERGROUND MINING ... The drilling side seemed to be only indirectly affected by explosives, which raised the problem of drilling accuracy and of explosives behavior. The resuIt of theseanaIysis, somehow quite poor and uncertain, was a good

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  • BE-5015 : BLASTING CONTROL FOR

    Zablocki A., Johansson L. (1986) Modern drilling and blasting techniques in underground mining. In: Mining Latin America Minería Latinoamericana. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2286-5_37. DOI https://doi.org/10.1007/978-94-017-2286-5_37; Publisher Name Springer, …

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  • Modern drilling and blasting techniques in

    2021-6-30 · In Europe’s first demonstration of wireless blasting, Orica has enabled First Quantum Minerals’ (FQM) Pyhäsalmi underground mine in Finland to recover ore it previously thought inaccessible. Orica’s WebGen™ 100, the first truly wireless rock blasting system, has been used in trials at the zinc-copper-pyrite mine since …

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  • Blasting Through the Ages: A brief history of

    2008-12-9 · Drilling and blasting is the only technology applied in drifting. In coal extraction, 25 m of drifts are needed for gaining 1000 tons of coal, with 9 m of basic drifts. Drilling and blasting play the key role in drifting efficiency. Blasting has to match following requirements: - High safety requirements, especially in methane …

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  • Drilling & Blasting of Underground Stopes

    2011-8-22 · For Customers in the Underground Mining market who are seeking to combine a number of quality services ™and truly optimise the drill & blast process, Orica offers the Rock on Ground service. Rock on Ground™ can complement a Customer’s own drilling capability with a complete rock extraction and delivery …

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  • drilling and blasting Archives - International Mining

    Drilling and blasting are the most important activity, where miners suffer most of the problems, therefore where exists the most important oppor tunity to improve their work, achieving best practices, safety and profitability (Hentschel et al, 2002, Hruschka and Echavarría, 2011). The study presented herein was developed …

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  • Underground - Orica Mining Services

    2011-8-22 · Germany, Sweden, South Africa and India. Orica Mining Services conducts R&D in ammonium nitrate, packaged ... drilling and blasting practices. Technology & Tools ... production charging in underground mining …

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  • Underground Blasting Drilling - ISO Certified

    2021-6-30 · Sandvik is looking to further optimise the drilling and blasting process with an updated version of its iSURE® underground rock excavation software. iSURE, Sandvik says, works seamlessly with its i-series drill rigs, providing accurate analysis functionality to improve the work cycle and process.

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  • drilling and blasting Archives - International Mining

    2018-12-14 · BLASTING CONTROL FOR UNDERGROUND MINING ... The drilling side seemed to be only indirectly affected by explosives, which raised the problem of drilling accuracy and of explosives behavior. The resuIt of theseanaIysis, somehow quite poor and uncertain, was a good

    Get Price
  • BE-5015 : BLASTING CONTROL FOR

    mizing the drilling and blasting patterns. It gives specific guidance for different stages of drilling and blasting, keeping project costs low while guaranteeing smooth proceeding of tunneling work. Our geotechnical department helps you in geology relat-ed issues, assessing the drillability and cuttability of the rock found in your …

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  • UNDERSTANDING UNDERGROUND - Sandvik Group

    2020-10-10 · Blasting in Coal Mines •Modern mechanised coal mines use machines and longwall mining methods to cut solid coal and convey the broken coal out of underground workings. •Continuous mining equipment has escalated coal production and introduced more effective and efficient coal handling facilities.

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  • Drilling & Blasting of Underground Stopes

    Drilling and blasting are the most important activity, where miners suffer most of the problems, therefore where exists the most important oppor tunity to improve their work, achieving best practices, safety and profitability (Hentschel et al, 2002, Hruschka and Echavarría, 2011). The study presented herein was developed …

    Get Price
  • Blasting in Underground Coal Mines - miningst.com

    2020-8-23 · August 23, 2020. 41. Tunneling in Rock by Drilling and Blasting presents the latest developments in the excavation of tunnels using the drilling and blasting method. Examples of work conducted throughout the world including the Indian sub-continent, Australia, and Sweden amongst others are discussed. These tunnel …

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  • Underground drilling — Sandvik Mining and Rock

    Our Digital Driller™ has been developed to improve performance in mining and tunneling underground hard rock drilling. It is purpose-designed to simulate the operation of a real rig – specifically the DD422i/iE, DT922i, DL432i, DL421 and DS422i – using the same control system software as found on the Sandvik drills.

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  • BE-5015 : BLASTING CONTROL FOR

    2018-12-14 · BLASTING CONTROL FOR UNDERGROUND MINING ... The drilling side seemed to be only indirectly affected by explosives, which raised the problem of drilling accuracy and of explosives behavior. The resuIt of theseanaIysis, somehow quite poor and uncertain, was a good

    Get Price
  • Underground Drilling and Blasting (streaming

    Underground mine workers – the need to identify the potential hazards of working near or with explosives, and the protocols of re-entering a working area after blasting. Workers responsible for development and production drilling and blasting activities. This video will review drilling and blasting fundamental concepts that are …

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  • Assessment of drilling deviations in underground ...

    This paper investigates the quality of the drilling in underground blasting operations with a view to quantify the distance of the position assessed by the MWD system with respect to the actual end position of the blasthole logged. For that, a Pulsar Micro Probe Mk3 has been used to measure the actual trajectory of several production …

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  • Selecting the optimal drilling and blasting design

    Drilling and blasting operations are very important part of underground excavation design. They should be performed in accordance with some criteria, such as fragmentation, excavation stability and cost. In the paper are considered three drilling and blasting designs in order to reach the optimal one.

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  • Underground Mining Methods - MineralsEd

    2019-2-27 · surface. Drilling and blasting takes place at different underground levels of the mine at the same time. As the blasted rock, muck, is continuously transported to the ore pass, more blasting will encourage the roof to cave in to the void and further into the drift. This is repeated until blasting, caving and transport-ing …

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  • Drilling and Blasting - an overview | ScienceDirect

    2012-1-1 · Zong-Xian Zhang, in Rock Fracture and Blasting, 2016. 21.5.2 To Increase Explosive Energy in Blasting. The preceding analysis indicates that an increase in drilling and blasting energy can increase the efficiency of total energy in the whole size reduction system. Moreover, a total of 210 blast tests show that the specific surface created by blasting …

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  • BEST PRACTICES IN DRILL AND BLAST - IQPC

    2017-5-9 · and blasting. In drilling, there is now available advanced use of GPS guided drilling systems that continue to grow and improve precision and effi ciency. Drill depths are accounted for more accurately, making it easier to assign the right amount of explosives in blasting. New GPS-enabled applications have improved …

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  • Blaster’s Training Module - miningquiz.com

    2019-8-11 · Good drilling practices include carefully monitoring drill-rig operating parameters, taking careful notes of the changes in geology during drilling, and effectively communicating to the blasting crew any unusual conditions encountered during drilling that may affect blasting results or require changes in hole-loading …

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  • QGN 11 Handling Explosives In Underground Mines

    2019-4-8 · distance from blasting conducted in sulphide areas to ensure in the event of an explosion the flame front does not propagate to the magazine area. An underground magazine should be a safe distance from accesses and main travel ways. 2.1.4 Vehicle Access . When designing the location of an underground …

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  • Underground drilling — Sandvik Mining and

    Our Digital Driller™ has been developed to improve performance in mining and tunneling underground hard rock drilling. It is purpose-designed to simulate the operation of a real rig – specifically the DD422i/iE, DT922i, DL432i, DL421 and DS422i – using the same control system software as found on the Sandvik drills.

    Get Price
  • Underground Mining Methods - MineralsEd

    2019-2-27 · surface. Drilling and blasting takes place at different underground levels of the mine at the same time. As the blasted rock, muck, is continuously transported to the ore pass, more blasting will encourage the roof to cave in to the void and further into the drift. This is repeated until blasting, caving and transport-ing …

    Get Price
  • BEST PRACTICES IN DRILL AND BLAST - IQPC

    2017-5-9 · and blasting. In drilling, there is now available advanced use of GPS guided drilling systems that continue to grow and improve precision and effi ciency. Drill depths are accounted for more accurately, making it easier to assign the right amount of explosives in blasting. New GPS-enabled applications have improved …

    Get Price
  • Assessment of drilling deviations in

    2019-1-1 · 1. Introduction. Drilling and blasting is a well-known technique used for rock excavation in tunnelling or underground civil works. In it, drilling operation is one of the critical stages of the overall excavation process with major influence in the efficiency of the next stages, such as blasting, scaling, loading, hauling and …

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  • Introduction to Underground Excavation by

    2016-11-23 · Abstract. Drilling and blasting are the most common methods for tunnelling and underground excavation. Working cycle of D & B excavation, excavation methods and charging methods for tunnels driving, shafts sinking and raise driving are illustrated in this chapter.

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  • v117n4a1 Introduction of drill and blast utilizing ...

    2017-5-2 · artisanal underground mine by T.A. Sethu*, T.P. Letsebe*, L. Magwaza*, and S.M. Rupprecht* Paper written on project work carried out in partial fulfilment of BTech (Mining Engineering) degree )' * The authors were tasked with introducing safe and efficient drilling and blasting practices to a small artisanal mine located in …

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  • Understanding charging and blasting solutions

    To understand differences of smooth and presplit blasting for the excavation of rock wells, two field experiments using these two techniques are implemented at the same test site, respectively. The ground vibrations induced by them have been monitored with the different distances through the corresponding devices. The vibration …

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  • Comparison of Presplit and Smooth Blasting

    2018-11-15 · Underground excavation by cyclic drilling and blasting is very often resorted to during construction of River Valley Projects. As very large areas are involved in such operations, it becomes necessary that a proper methodology is available for rate analysis of the same.

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  • IS 14749 (2000): Proforma for Analysis of Unit Rate

    Drilling and blasting operations are very important part of underground excavation design. They should be performed in accordance with some criteria, such as fragmentation, excavation stability and cost. In the paper are considered three drilling and blasting designs in order to reach the optimal one.

    Get Price
  • Drilling and boring: going deeper underground -

    2011-8-22 · Germany, Sweden, South Africa and India. Orica Mining Services conducts R&D in ammonium nitrate, packaged ... drilling and blasting practices. Technology & Tools ... production charging in underground mining …

    Get Price
  • Underground - Orica Mining Services

    Drilling and Blasting. For Coal, quarries, roads, highways, pipelines, industrial site developments, sub-divisions, underground utilities, controlled blasting in residential and developed commercial areas. Building And Civil Engineering.

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  • Duwan Group – Duwan Group

    2021-2-3 · Upon returning to Texas, Marcus continued to use his skills with explosives in small jobs such as septic tanks and swimming pools. In the late 1950’s, he went to Colorado and worked in the underground mining industry. He returned to Texas in 1968, and in 1972, he started his own blasting company, which is now known as Erfurt Blasting …

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  • ERFURT BLASTING CO. INC.

    2019-1-1 · 1. Introduction. Drilling and blasting is a well-known technique used for rock excavation in tunnelling or underground civil works. In it, drilling operation is one of the critical stages of the overall excavation process with major influence in the efficiency of the next stages, such as blasting, scaling, loading, hauling and …

    Get Price
  • DRILLING AND BLASTING - Mining Technology

    2014-6-11 · Where drilling and blasting conditions are both severe, the operator should use premium explosives, at least in the bottom one third of the drill hole. Clearing the toe, and therefore contributing to a smoother floor, is a major asset to improve BLAST DESIGN.

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  • Assessment of drilling deviations in underground ...

    2019-8-11 · Good drilling practices include carefully monitoring drill-rig operating parameters, taking careful notes of the changes in geology during drilling, and effectively communicating to the blasting crew any unusual conditions encountered during drilling that may affect blasting results or require changes in hole-loading …

    Get Price
  • Chapter 8 BLAST DESIGN - NPS

    2020-6-16 · drilling pattern in underground coal mines and all 7 types of blasting design patterns like wedge cut drilling pattern, pyramid cut drilling pattern. pyramid cut में drilling hole, Face के मध्य भाग से 0.7 - …

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