·Merensky Platinum Reefs A novel form of mining machine is proposed that will utilize existing technology Finally the paper describes the interaction between Sandvik Tamrock Voest Alpine and Lonmin Platinum and the initiation of an agreement to develop and trial a prototype hard rock narrow reef mining machine Background
Due to the low presence of fly rock dust and noise oversize boulders and rock can be broken whilst normal operations continue Royex is today frequently used in underground mining applications for just this purpose Royex Rock Breaking & Excavation Safe Reliable and Low noise rock breaking techniques Runsätravägen 5 123 63
·Full scale rock breaking tests on a rotary cutting machine were conducted and 25 groups of orthogonal numerical simulations were carried out M Cigla S Yagiz and L Ozdemir Application of tunnel boring machines in underground mine development 17th International Mining Congress and Exhibition of Turkey 2001 155 164 Google Scholar
·Mining operations have long relied on conventional methods of rock fragmentation such as drilling and blasting for resource extraction However as the mining industry faces increasing demands for efficiency safety and sustainability innovative technologies like laser induced rock breakage LIRB have emerged as promising alternatives
·A new high efficiency technology for fracturing and breaking rocks is required in geotechnical and mining engineering Due to various advantages including high efficiency energy saving and having no secondary pollution no dust or noise the technology of microwave induced fracturing of hard rock has been considered as a potential method for rock
ROCK FORCE is a non explosive demolition agent ROCK FORCE is a heavily swelling mortar for non explosive concrete demolition and rock expands soundlessly tears apart structural elements and separates reinforcing steel from concrete Demand for non explosive and vibrationless demolition has experienced exponential growth in the past few years
·With the continuous development of high pressure water jet technology research on the optimization of structural parameters for multi nozzle configurations the perforation effect of jet rotational impact rock breaking and the impact force during rock breaking has received increasing attention Through the development of a self designed high pressure
·The optimization of blasting operations greatly benefits from the prediction of rock fragmentation The main factors that affect fragmentation are rock mass characteristics blast geometry and explosive properties This paper is a step towards the implementation of machine learning and deep learning algorithms for predicting the extent of fragmentation in percentage
Introducing the HRD Rock Splitter the most powerful product in the world for breaking rocks and concrete structures With the HRD Rock Splitter you can achieve quick and controlled rock breaking with ease We offer four models to cater to your specific needs HRD80 HRD85 HRD90 and HRD95 Experience unmatched efficiency and precision with
The use of explosives in the mining industry dates back to the seventeenth century when Caspar Weindel employed black powder known by the Chinese since the second century and used for war purposes since the twelfth century to break a rock in an underground mine in Schemnitz Banská Štiavnica in current Slovakia
Highly efficient hard rock breaking tool for mining machines BL Gerike VI Klishin and PB Gerike Federal Research Center of Coal and Coal Chemistry Siberian Branch Russian Academy of Sciences Kemerovo Russia E mail gbl 42 Abstract Under consideration is the experience gained in design and manufacture of tools for
Tests with the largest machine confirmed its ability to deal with rock at full scale whether hard soft or badly fissured and suggest the possibility of making a variety of very flexible and environmentally attractive mining machines
We engineer an extensive range of underground drill rigs for mining development and production Available in a variety of feed lengths boom configurations and size classes our underground drill rigs maximize productivity while delivering the lowest cost per meter We offer battery driven underground drills for all underground drilling
·1 ABSTRACT This report entails information on Mechanical Rock Breakage machines their applications and merits and limitations This report also illustrates the integration of supporting
·A new high efficiency technology for fracturing and breaking rocks is required in geotechnical and mining engineering Due to various advantages including high efficiency energy saving and having no secondary pollution no dust or noise the technology of microwave induced fracturing of hard rock has been considered as a potential method for rock
·During tunnel boring machine TBM construction the rock breaking effect of the disc cutter in complex formations affects the progress and cost of the entire project Therefore it is necessary to better understand the rock breaking mechanism of TBM in complex formations In this study matrix discrete element method MatDEM software is used to study the rock
·Mining operations have long relied on conventional methods of rock fragmentation such as drilling and blasting for resource extraction However as the mining industry faces increasing demands for efficiency safety and sustainability innovative technologies like laser induced rock breakage LIRB have emerged as promising alternatives
PDF On Jun 3 2019 BL Gerike and others published Highly efficient hard rock breaking tool for mining machines Find read and cite all the research you need on ResearchGate
·To this end the large raise boring machine drilling process rock breaking and shaft wall stability during raise boring should be studied Liu 2001 Zhang et al 2008 Rapid construction of mining ventilation shaft with raise boring machine for nuclear mine Coal Science and Technology 32 2 2004 pp 48 49 in Chinese
·A comprehensive review of the performance and related aspects of explosive free rock breaking EFRB technologies is necessary to assess and demonstrate their applicability in the mining industry
·The challenges pertaining to low rock breaking efficiency and high drilling cost in deep hard formation and hot dry rock HDR are highly pronounced A novel drilling technology the combined thermomechanical drilling technology has demonstrated its potential to enhance the rate of penetration However the rock breaking mechanism for thermal spalling assisted
·Unfavorable geological phenomena such as fault development and weak surrounding rocks are the common challenges encountered in tunnel excavation However the conventional rock mass classification method is complex and the data obtained through disturbed rock samples cannot be used to dynamically and accurately class the surrounding rock in real
·The test involves the preparation of large rock blocks Fig 1 a and concrete pouring to fill the gaps between the rock blocks Fig 1 b a suitable rotary cutter rock breaking test bench Fig 1 c the design of the test steps the collection and particle size analysis of the crushed rock after rock breaking Fig 1 d etc The cost time
·Traditional non explosive methods like demolition agent and rock breaking machine are generally time consuming Therefore this study proposes a novel liquid carbon dioxide rock breaking technology and designs the relative device Safely and efficiently breaking rock is significant in municipal mining and hydropower engineering Explosive
Underground mining activities involve the safe breaking removal and support of rock and are very labour intensive Supervisors working underground require sound technical knowledge of the mining process as well as supervisory qualities to lead teams involved in all the activities directly related to extraction of rock or mineral
