Mining engineering最新文献_第2页

Imminent danger:: Characterizing uncertainty in critically hazardous mining situations. 迫在眉睫的危险::描述极其危险的采矿情况的不确定性。

Mining engineering Pub Date : 2018-09-01 DOI: 10.19150/me.8490

B M Eiter, J Hrica, D R Willmer

引用次数: 3

Impact of aging on the performance of impactor and sharp-cut cyclone size selectors for DPM sampling 老化对DPM取样冲击器和锐切旋流器尺寸选择器性能的影响

Mining engineering Pub Date : 2018-08-01 DOI: 10.19150/ME.8428

S. Gaillard, E. Sarver, E. Cauda

引用次数: 1

Estimation of metabolic heat input for refuge alternative thermal testing and simulation. 估算用于避难所替代热测试和模拟的代谢热输入。

Mining engineering Pub Date : 2018-08-01 DOI: 10.19150/me.8429

T E Bernard, D S Yantek, E D Thimons

{"title":"Estimation of metabolic heat input for refuge alternative thermal testing and simulation.","authors":"T E Bernard, D S Yantek, E D Thimons","doi":"10.19150/me.8429","DOIUrl":"10.19150/me.8429","url":null,"abstract":"Refuge alternatives provide shelter to miners trapped underground during a disaster. Manufacturers must demonstrate that their refuge alternatives meet the U.S. Mine Safety and Health Administration (MSHA) requirements for oxygen supply, carbon dioxide removal, and management of heat from the occupants and mechanical/chemical systems. In this study, miner size and activity level were used to determine the metabolic heat rate, oxygen requirements and carbon dioxide generation that are representative of miners in a refuge situation. A convenience sample of 198 male miners was used for the distribution of current U.S. coal miners, and the composite 95th percentile height and weight were determined to be 193 cm (76 in.) and 133 kg (293 lb). The resting metabolic rate (RMR) was determined to be representative of activity level in a refuge alternative. The highest likely metabolic heat generation ranged from 113 to 134 W, depending on occupancy. The highest required oxygen supply and carbon dioxide removal were estimated to be 23 L (0.81 cu ft) of oxygen per hour per person and 20 L (0.71 cu ft) of carbon dioxide per hour per person, which means the margin of safety is 50 percent or more compared with the MSHA requirements. The information on metabolic heat generation can be used to assess refuge alternative thermal environments by testing or simulation. The required oxygen supply and carbon dioxide removal can be used to assess refuge alternative requirements.","PeriodicalId":91142,"journal":{"name":"Mining engineering","volume":"70 8","pages":"50-54"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6180326/pdf/nihms-985093.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36627712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

North American net import reliance of mineral materials in 2014 for advanced technologies 2014年北美对先进技术矿物材料的净进口依赖

Mining engineering Pub Date : 2018-07-01 DOI: 10.19150/ME.8365

J. Brainard, R. Sinclair, K. Stone, E. Sangine, S. Fortier

引用次数: 2

Optimization of through-the-Earth radio communications via mine overburden conductivity estimation 通过矿山覆盖层电导率估计优化地球无线电通信

Mining engineering Pub Date : 2018-07-01 DOI: 10.19150/ME.8366

M. Ralchenko, M. Svilans, C. Samson, C. Walsh, Mike Roper

引用次数: 0

Effects of dewatering flooded abandoned room-and-pillar mines on surface subsidence 排水淹没废弃房柱矿对地表沉降的影响

Mining engineering Pub Date : 2018-06-01 DOI: 10.19150/ME.8298

Y. Luo, J. Yang

引用次数: 1

Investigation of the influence of a large steel plate on the magnetic field distribution of a magnetic proximity detection system. 大钢板对磁接近检测系统磁场分布影响的研究。

Mining engineering Pub Date : 2018-06-01 DOI: 10.19150/me.8299

J Li, J DuCarme, M Reyes, A Smith

{"title":"Investigation of the influence of a large steel plate on the magnetic field distribution of a magnetic proximity detection system.","authors":"J Li, J DuCarme, M Reyes, A Smith","doi":"10.19150/me.8299","DOIUrl":"https://doi.org/10.19150/me.8299","url":null,"abstract":"A magnetic proximity detection system is mounted on a mobile mining machine to prevent underground workers from being pinned or struck by machine motion. The system generates magnetic fields around the machine to determine safe working distances. The miner-worn component measures the magnetic field in order to approximate location. Large masses of steel, such as those from mining equipment, can alter the magnetic field distribution. This affects the locational accuracy of the system, thus adversely impacting worker safety. To examine this problem, U.S. National Institute for Occupational Safety and Health researchers developed a method and test system to study the influence of a steel mass on the magnetic field distribution. The results show that a steel plate can strengthen the magnetic field perpendicular to the generator by up to 40 percent. Furthermore, they show that the degree of the influence on the field distribution is a function of distance. The results from this study can be used to further develop and improve the performance and reliability of electromagnetic proximity detection systems used in underground mining applications.","PeriodicalId":91142,"journal":{"name":"Mining engineering","volume":"70 6","pages":"51-56"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6044725/pdf/nihms973317.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36312772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Dust control by air-blocking shelves and dust collector-to-bailing airflow ratios for a surface mine drill shroud. 用阻风架和集尘器-卸灰气流比控制露天矿井钻机防护罩粉尘。

Mining engineering Pub Date : 2018-05-01 DOI: 10.19150/me.8238

Y Zheng, W R Reed, J D Potts, M Li, J P Rider

引用次数: 1

Electromagnetic interference from personal dust monitors and other electronic devices with proximity detection systems. 来自个人灰尘监测器和其他带有接近探测系统的电子设备的电磁干扰。

Mining engineering Pub Date : 2018-05-01 DOI: 10.19150/me.8237

J Noll, R J Matetic, J Li, C Zhou, J DuCarme, M Reyes, J Srednicki

{"title":"Electromagnetic interference from personal dust monitors and other electronic devices with proximity detection systems.","authors":"J Noll, R J Matetic, J Li, C Zhou, J DuCarme, M Reyes, J Srednicki","doi":"10.19150/me.8237","DOIUrl":"https://doi.org/10.19150/me.8237","url":null,"abstract":"In April 2016, the U.S. Mine Safety and Health Administration (MSHA) began requiring the use of continuous personal dust monitors to monitor and measure respirable mine dust exposures to underground coal miners. Mines are currently using the PDM3700 personal dust monitor to comply with this regulation. After the PDM3700's implementation, mine operators discovered that it interfered with proximity detection systems, thus exposing miners to potential striking and pinning hazards from continuous mining machines. Besides the PDM3700, other electronic devices were also previously reported to interfere with proximity detection systems. MSHA sought the aid of the U.S. National Institute for Occupational Safety and Health (NIOSH) and mining industry stakeholders to determine how the PDM3700 and some other electronic devices and proximity detection systems interact with each other. Accordingly, NIOSH investigated existing standards, developed test protocols, designed experiments and conducted laboratory evaluations. Some interferences were observed to be caused by electromagnetic interference from some electronic devices, including the PDM3700. Results showed that there was no significant interference when the PDM3700, as well as other electronic devices, and the miner-wearable component of the proximity detection system were separated by distances of 15 cm (6 in.) or greater. In the present study, it was found that the PDM3700 and the personal alarm device needed to be at least 15 cm (6 in.) apart in order for them to be used simultaneously and reduce potential interference.","PeriodicalId":91142,"journal":{"name":"Mining engineering","volume":"70 5","pages":"61-68"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6108086/pdf/nihms-983795.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36431143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Use of subsidence to estimate secondary extraction of trona 利用沉降估算天然气的二次提取

Mining engineering Pub Date : 2018-04-01 DOI: 10.19150/ME.8194

N. West, P. Conrad, R. Kramer, C. Todd

引用次数: 0