Mining engineering最新文献_第6页

Standing support and rolled mesh for safe and efficient tailgate rib control 站立支持和滚动网的安全，有效的后挡板肋骨控制

Mining engineering Pub Date : 2016-12-01 DOI: 10.19150/me.6421

T. Jones, J. Dubbert

引用次数: 1

Reducing float coal dust: Field evaluation of an inline auxiliary fan scrubber. 减少浮尘:在线辅助风机洗涤器的现场评价。

Mining engineering Pub Date : 2016-12-01 DOI: 10.19150/me.6883

J. Patts, J. Colinet, S. Janisko, T. Barone, L. Patts

引用次数: 3

Area monitoring and spot-checking for diesel particulate matter in an underground mine 某地下矿山柴油机颗粒物区域监测与抽查

Mining engineering Pub Date : 2016-12-01 DOI: 10.19150/me.6882

S. Gaillard, E. Mccullough, E. Sarver

引用次数: 1

Defining hazard from the mine worker's perspective. 从矿工的角度定义危险。

Mining engineering Pub Date : 2016-11-01 DOI: 10.19150/me.6832

B. Eiter, C. Kosmoski, Blaine P. Connor

引用次数: 10

Computational fluid dynamic modeling of a medium-sized surface mine blasthole drill shroud. 中型露天矿爆破孔钻头护罩的计算流体动力学模型。

Mining engineering Pub Date : 2016-11-01 DOI: 10.19150/me.6831

Y Zheng, W R Reed, L Zhou, J P Rider

{"title":"Computational fluid dynamic modeling of a medium-sized surface mine blasthole drill shroud.","authors":"Y Zheng, W R Reed, L Zhou, J P Rider","doi":"10.19150/me.6831","DOIUrl":"10.19150/me.6831","url":null,"abstract":"The Pittsburgh Mining Research Division of the U.S. National Institute for Occupational Safety and Health (NIOSH) recently developed a series of models using computational fluid dynamics (CFD) to study airflows and respirable dust distribution associated with a medium-sized surface blasthole drill shroud with a dry dust collector system. Previously run experiments conducted in NIOSH's full-scale drill shroud laboratory were used to validate the models. The setup values in the CFD models were calculated from experimental data obtained from the drill shroud laboratory and measurements of test material particle size. Subsequent simulation results were compared with the experimental data for several test scenarios, including 0.14 m3/s (300 cfm) and 0.24 m3/s (500 cfm) bailing airflow with 2:1, 3:1 and 4:1 dust collector-to-bailing airflow ratios. For the 2:1 and 3:1 ratios, the calculated dust concentrations from the CFD models were within the 95 percent confidence intervals of the experimental data. This paper describes the methodology used to develop the CFD models, to calculate the model input and to validate the models based on the experimental data. Problem regions were identified and revealed by the study. The simulation results could be used for future development of dust control methods for a surface mine blasthole drill shroud.","PeriodicalId":91142,"journal":{"name":"Mining engineering","volume":"68 11 1","pages":"43-49"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5139910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67756035","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

Refuge alternatives relief valve testing and design. 安全阀的检测和设计。

Mining engineering Pub Date : 2016-10-01 DOI: 10.19150/me.6802

T. Lutz, P. Bissert, G. Homce, J. Yonkey

{"title":"Refuge alternatives relief valve testing and design.","authors":"T. Lutz, P. Bissert, G. Homce, J. Yonkey","doi":"10.19150/me.6802","DOIUrl":"https://doi.org/10.19150/me.6802","url":null,"abstract":"The U.S. National Institute for Occupational Safety and Health (NIOSH) has been researching refuge alternatives (RAs) since 2007. RAs typically have built-in pressure relief valves (PRVs) to prevent the unit from reaching unsafe pressures. The U.S. Mine Safety and Health Administration requires that these valves vent the chamber at a maximum pressure of 1.25 kPa (0.18 psi, 5.0 in. H2O), or as specified by the manufacturer, above mine atmospheric pressure in the RA. To facilitate PRV testing, an instrumented benchtop test fixture was developed using an off-the-shelf centrifugal blower and ductwork. Relief pressures and flow characteristics were measured for three units: (1) a modified polyvinyl chloride check valve, (2) an off-the-shelf brass/cast-iron butterfly check valve and (3) a commercially available valve that was designed specifically for one manufacturer's steel prefabricated RAs and had been adapted for use in one mine operator's built-in-place RA. PRVs used in tent-style RAs were not investigated. The units were tested with different modifications and configurations in order to check compliance with Title 30 Code of Federal Regulations, or 30 CFR, regulations. The commercially available relief valve did not meet the 30 CFR relief pressure specification but may meet the manufacturer's specification. Alternative valve designs were modified to meet the 30 CFR relief pressure specification, but all valve designs will need further design research to examine survivability in the event of a 103 kPa (15.0 psi) impulse overpressure during a disaster.","PeriodicalId":91142,"journal":{"name":"Mining engineering","volume":"68 10 1","pages":"55-59"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67756028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Fragmentation modeling using the Multiple Blasthole Fragmentation (MBF) model at an openpit mine 利用多炮眼破片(MBF)模型进行露天矿破片建模

Mining engineering Pub Date : 2016-10-01 DOI: 10.19150/ME.6801

R. Yang, C. McAllister, J. Berendzen, D. Preece

引用次数: 4

Validation of temperature and humidity thermal model of 23-person tent-type refuge alternative. 23人帐篷式避难方案的温湿度热模型验证。

Mining engineering Pub Date : 2016-09-01 DOI: 10.19150/ME.6759

L. Yan, D. Yantek, M. Klein, P. Bissert, R. Matetic

{"title":"Validation of temperature and humidity thermal model of 23-person tent-type refuge alternative.","authors":"L. Yan, D. Yantek, M. Klein, P. Bissert, R. Matetic","doi":"10.19150/ME.6759","DOIUrl":"https://doi.org/10.19150/ME.6759","url":null,"abstract":"U.S. Mine Safety and Health Administration (MSHA) regulations require underground coal mines to use refuge alternatives (RAs) to provide a breathable air environment for 96 hours. One of the main concerns with the use of mobile RAs is heat and humidity buildup inside the RA. The accumulation of heat and humidity can result in miners suffering heat stress or even death. MSHA regulations require that the apparent temperature in an occupied RA not exceed 95 °F. To investigate this, the U.S. National Institute for Occupational Safety and Health (NIOSH) conducted testing on a 23-person tent-type RA in its Experimental Mine in a test area that was isolated from the mine ventilation system. The test results showed that the average measured air temperature within the RA increased by 9.4 °C (17 °F) and the relative humidity approached 94 percent at the end of a 96-hour test. The test results were used to benchmark a thermal simulation model of the tested RA. The validated thermal simulation model predicted the volume-weighted average air temperature inside the RA tent at the end of 96 hours to within 0.06 °C (0.1 °F) of the average measured air temperature.","PeriodicalId":91142,"journal":{"name":"Mining engineering","volume":"68 9 1","pages":"97"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67756014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Evaluation of an E-field through-the-earth (TTE) communications system at an underground longwall mine in West Virginia 西弗吉尼亚州一个地下长壁矿的E场穿透地球（TTE）通信系统的评估

Mining engineering Pub Date : 2016-09-01 DOI: 10.19150/ME.6758

E. Jong, S. Schafrik

引用次数: 0

Jackleg drill injuries Jackleg钻机受伤

Mining engineering Pub Date : 2016-08-01 DOI: 10.19150/ME.6711

C. Clark, D. Benton, J. B. Seymour, L. Martin

引用次数: 2