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Author s XU Wenwen YE Haiwang ZHANG Yingji WANG Yongkang WANG Jianjun AI Xiaozong LAN Zhen ZHANG Jianhua ALIEU Kamara Pages 70 74 Year 2024 Issue 3 Journal Blasting Keyword air decking charge vibration reduction ratio blasting fragmentation controlled blasting Abstract
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1 day agoThe vibration signal with 0 80 Hz frequency band monitored at the slope toe was selected for the energy attenuation analysis The results showed that the energy attenuation decreased in radial
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1 day agoDownload Citation Analysis of blasting vibration signal of high steep anti dip layered rock slope Blasting is one of the most economical and efficient mining methods in open pit mine production
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In metal open pit mine the ore loss rate is generally 3% 5% and dilution rate is generally 5% 8% While in underground mining the ore loss rate is generally 15% 25% and dilution rate is 3% 20% Therefore open pit mining is beneficial to the full recovery of mineral resources Especially for some high temperature flammable and watery
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The invention discloses a vibrating type open pit mining machine which comprises a travelling mechanism a main machine chassis a cab and a cutting body connected with a cutting roller wherein the cutter body is movably connected with the main machine chassis and can rotate oppositely the cutting roller is driven by a power source to rotate cutting teeth are mounted on the cutting roller
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Whole body vibration WBV is a slow forming physical hazard that occurs in mining workers and other occupations that work with heavy machinery In the mining environment WBV can be caused either by spending a lot of time sitting on machinery which is most of the time in mining extraction or by standing such as working on jumbo operators
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Mar 30 2022Nevertheless to say open pit mining environmental impact causes deforestation and vegetation loss Along with removing topsoil rocks we remove the vegetation in the mining causing an imbalance in the food chain and food webs A report shows that about 44% of mines lie in forest areas full of charming biodiversity
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Publicações com o mesmo livro da publicação Patterns of Whole Body Vibrations in Open Pit Mining Agrupar Por Ordenação Capítulo ou Parte de Livro 3D human thermoregulation model bioheat transfer in tissues and small vessels Joana Guedes Autor FEUP
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Sep 7 2022The stability of the high and steep slope of the open pit mine under static and dynamic loads was analyzed by using field vibration monitoring and numerical simulation methods The results show that the vibration range of the vibration wave is cm/s and the vibration wave shows a gradual attenuation trend
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Steel is an alloy made up of iron with typically a few tenths of a percent of carbon to improve its strength and fracture resistance compared to other forms of iron Many other elements may be present or added Stainless steels that are corrosion and oxidation resistant typically need an additional 11% of its high tensile strength and low cost steel is used in buildings
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Ground vibration is one of the most undesirable effects induced by blasting operations in open pit mines and it can cause damage to surrounding structures Therefore predicting ground vibration is important to reduce the environmental effects of mine blasting
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1 day ：2022522 のマンガンをしたは、にあるマンガンりをしにきます。 はにあるマンガン ：2022522 ののは、にある
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Nov 8 2022Mechanism of Ground Vibration During Blasting During blasting explosives are detonated in drill holes creating shock waves The shock waves crush the walls of the drill holes causing instantaneous dilation of the material in the immediate vicinity of the borehole Fig 1
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The newly modified equation which considers the effect of joints demonstrates superior accuracy and applicability for predicting blasting vibration at the Baideng open pit phosphorite mine In an open pit minefield different rock properties are observed between the blasting area and the monitoring point thereby corresponding to different
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As a non explosive low disturbance rock breaking technology carbon dioxide phase transition blasting CDPTB is widely used in rock breaking projects such as pressure relief and permeability enhancement in coal mines open pit mining road subgrade excavation foundation pit excavation etc In this paper the principle and equipment of CDPTB are systematically analyzed and the
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Predicting Blast Induced Ground Vibration in Open Pit Mines Using Vibration Sensors and Support Vector Regression Based Optimization Algorithms Sensors Basel doi /s20010132 Authors Hoang Nguyen 1 Yosoon Choi 2 Xuan Nam Bui 3 4 Trung Nguyen Thoi 5 6 Affiliations
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KAB Seating s range of mining equipment seats incorporates a wide variety of seats for use in many types of underground and open pit mining equipment Surface Mining Methods and Equipment UN EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING Vol II Surface Mining Methods and Equipment J Yamatomi and S Okubo ©Encyclopedia of Life Support Systems EOLSS
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One of the most fundamental stages in open pit mining is drilling and blasting A good fragmentation and a minimum ground vibration are characteristics of a successful drilling and blasting operation In this study 78 blasting events of AlvandQoly limestone mine located in Kurdestan cement company in west of Iran were investigated
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Whole Body Vibration WBV in open pit mining sources measurements methodologies and main effects on health A review based on PRISMA Statement was done Inclusion criteria were research on WBV in mining published after 1990 and written in English Thirty three studies were included in the review Rock drills shov
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1 day agoThe vibration signals obtained in the blasting test were analyzed using the wavelet packet theory and it was concluded that the blasting vibration signals measured in the anti dip layered rock slope were mainly concentrated in two frequency bands of 0 80 Hz and 115 160 Hz
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The slope stability of the open pit mine is monitored by determining the vibration at the boundary of the mining area The root mean square acceleration ARMS recorded at the five monitored points closely for evaluation of vibration reduction and it is given by where a t is the acceleration at time t and T is the duration of vibration
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Apr 28 2022Open pit coal mining is the main mining method in the world and the proportion of open pit coal mining in several other major coal mining countries USA Russia India etc except China is basically above 50% Some countries reach more than 90% and the proportion of open pit coal mining in China has also increased from 4% to 15% [3 4]
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sbm vibration in open pit · main · dihog / sbm · GitLab S dihog sbm Repository An error occurred while loading code owners main sbm sbm vibration in open pit Find file Blame History Permalink VI dihog authored 2 days ago ca1ab5f1
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In order to study the characteristics of ground vibrations caused by production blasts in an open pit gold mine and to evaluate the impact of the vibrations to buildings a seismic
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Sep 22 2022Vibration induced by mining processing transport or subsidence Impact on surface water and groundwater The viability of a mining operation and its economics are often dictated by the smart effective planning and anticipation implemented by the mining company in the beginning Conclusion
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Open pit mining is surface mining in which huge portions of earth are dug from the surface to extract the desired mineral within them During the mining process the land face is scraped away by explosives and digging creating a deeper and deeper pit until the mining is complete The final shape of the open pit is decided before excavation
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Musculoskeletal symptoms and exposure to whole body vibration among open pit mine workers in the Arctic Int J Occup Med Environ Health 2024 Jun 19 30 4 553 564 Objectives This cross sectional questionnaire study was carried out at 4 open pit mines in Finland Norway Russia and Sweden as part of the MineHealth project The aim has been
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Sometimes explosives up to 95 978 kg are being detonated in a blast round in open pit mine for speedy removal of overburden The impact of 86 open pit blasts has been documented in
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The beautiful premium seating options at Minute Maid Park offer all new exclusive Houston Astros Boxes/ Suites From the comfort of theatre style seating to HD TVs sliding glass doors
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ResearchArticleEffectOfOpen PitBlastingVibrationsonaHanging WallSlope ACaseStudyoftheBeizhanIronMineinChinaYong gangXiao1JieCao3Xiao minLiu1andChang
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