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Analyzing method to evaluate effect of roadway pressure relief 巷道卸压效果评价的分析方法
IF 1.3
Mining Science Pub Date : 2020-01-01 DOI: 10.37190/MSC202719
L. Fan, Weijun Wang, Chao Yuan
{"title":"Analyzing method to evaluate effect of roadway pressure relief","authors":"L. Fan, Weijun Wang, Chao Yuan","doi":"10.37190/MSC202719","DOIUrl":"https://doi.org/10.37190/MSC202719","url":null,"abstract":"","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74187182","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: 0
Non-destructive characterisation of mortars reinforced with various fibres exposed to high temperature 高温下各种纤维增强砂浆的无损特性
IF 1.3
Mining Science Pub Date : 2018-01-01 DOI: 10.5277/MSC182513
M. Ezziane, Laurent Molez, I. Messaoudene
{"title":"Non-destructive characterisation of mortars reinforced with various fibres exposed to high temperature","authors":"M. Ezziane, Laurent Molez, I. Messaoudene","doi":"10.5277/MSC182513","DOIUrl":"https://doi.org/10.5277/MSC182513","url":null,"abstract":"The objective of this study is to investigate the effect of temperature on the physical and mechanical properties of standard mortar reinforced with steel fibers, polypropylene fibers and hybrid fibers. Non-destructive tests (capillary water absorption, interconnected porosity, gas permeability, ultrasound celerity) were carried out on samples that had been heated, at a temperature ramp of 5 °C/min, to maximum temperature of: 105 °C, 400 °C, 500 °C et 800 °C. The results show a good correlation between the evolution of properties and the damage resulting from the imposed heat exposure treatment. The study shows that there is a significant deterioration of physico-mechanical properties of the fiber mortars above 500 °C. The hybrid fiber mortars show a good compromise: the polypropylene fibers guarantee a thermal stability whereas the steel fibers act to conserve good mechanical behavior.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80775506","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: 2
Influence of pick layouts on the performance of bolter miner cutting head 截齿布置对锚杆采煤机截割头性能的影响
IF 1.3
Mining Science Pub Date : 2018-01-01 DOI: 10.5277/MSC182511
Qiao Shuo, A. Wang, Xia Yimin, Z. Liu, J. S. Liu, M. Yang
{"title":"Influence of pick layouts on the performance of bolter miner cutting head","authors":"Qiao Shuo, A. Wang, Xia Yimin, Z. Liu, J. S. Liu, M. Yang","doi":"10.5277/MSC182511","DOIUrl":"https://doi.org/10.5277/MSC182511","url":null,"abstract":"","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74798671","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: 2
Optimizing splice geometry in multiply conveyor belts with respect to stress in adhesive bonds 基于粘接应力的多传送带拼接几何优化
IF 1.3
Mining Science Pub Date : 2018-01-01 DOI: 10.5277/MSC182514
M. Bajda, R. Blazej, M. Hardygóra
{"title":"Optimizing splice geometry in multiply conveyor belts with respect to stress in adhesive bonds","authors":"M. Bajda, R. Blazej, M. Hardygóra","doi":"10.5277/MSC182514","DOIUrl":"https://doi.org/10.5277/MSC182514","url":null,"abstract":"This paper presents the results of investigations into stress distribution in the adhesive bonds of multiply conveyor belt splices. The splices were cold-vulcanized with the use of chemically hardening glues having various strength parameters. The research results demonstrated that the length of splices may be reduced without the risk of lowering their tensile strength and fatigue life. The paper presents stress values in adhesive joints of various belt types and the influence that the properties of belts, splices and splicing materials have on stress values in the adhesive bond of the splice.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78745092","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: 8
Application of hydrochemistry for inrush water source identification in coal mine: approach based on statistical analysis 水化学在煤矿突水水源识别中的应用:基于统计分析的方法
IF 1.3
Mining Science Pub Date : 2018-01-01 DOI: 10.5277/MSC182508
L. Sun
{"title":"Application of hydrochemistry for inrush water source identification in coal mine: approach based on statistical analysis","authors":"L. Sun","doi":"10.5277/MSC182508","DOIUrl":"https://doi.org/10.5277/MSC182508","url":null,"abstract":"","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88569616","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: 2
Experimental Investigation on the Effect of Marble powder on the performance of Selt-Compacting Concrete (SCC) 大理岩粉对自密实混凝土性能影响的试验研究
IF 1.3
Mining Science Pub Date : 2017-12-04 DOI: 10.5277/MSC172411
L. Belagraa, Nora Said Djebri, Z. Rahmouni
{"title":"Experimental Investigation on the Effect of Marble powder on the performance of Selt-Compacting Concrete (SCC)","authors":"L. Belagraa, Nora Said Djebri, Z. Rahmouni","doi":"10.5277/MSC172411","DOIUrl":"https://doi.org/10.5277/MSC172411","url":null,"abstract":"","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73937849","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: 0
Combined effect of silica fume and additive on the behavior of high performance concretes subjected to high temperatures 硅灰和添加剂对高温下高性能混凝土性能的联合影响
IF 1.3
Mining Science Pub Date : 2017-09-08 DOI: 10.5277/MSC172408
N. Tebbal, Z. Rahmouni, M. Maza
{"title":"Combined effect of silica fume and additive on the behavior of high performance concretes subjected to high temperatures","authors":"N. Tebbal, Z. Rahmouni, M. Maza","doi":"10.5277/MSC172408","DOIUrl":"https://doi.org/10.5277/MSC172408","url":null,"abstract":": This study examines the effect of the additions of silica fume and super plasticizer on the mechanical performance of high performance concretes at high temperatures. The tested concretes are formulated with 5% silica fume and two dosages of super plasticizers in the ratio of (2%, 2.5%) the weight of cement after having been exposed to four maximum temperatures, 200 °C, 400 °C, 600 °C and 900 °C without any imposed load during the heating. The results obtained show that the mechanical resistance at 28 day increases with the degree of temperature compared to that measured at 20 °C. On the contrary, a clear decrease is observed between 600 °C and 900 °C. However, material composition seems to have great influence on the mechanical strength.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91289226","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: 8
A review on mineral waste for chemical-activated binders: mineralogical and chemical characteristics 矿物废弃物化学活化粘合剂的研究进展:矿物学和化学特性
IF 1.3
Mining Science Pub Date : 2017-01-01 DOI: 10.5277/MSC172402
N. Sedira, João Castro-Gomes, G. Kastiukas, Xiangming Zhou, A. Vargas
{"title":"A review on mineral waste for chemical-activated binders: mineralogical and chemical characteristics","authors":"N. Sedira, João Castro-Gomes, G. Kastiukas, Xiangming Zhou, A. Vargas","doi":"10.5277/MSC172402","DOIUrl":"https://doi.org/10.5277/MSC172402","url":null,"abstract":"European Commission under Horizon 2020, Marie Sklodowska-Curie Actions, Research and Innovation Staff Exchange (RISE), by REMINE – “Reuse of Mining Waste into Innovative Geopolymeric-based Structural Panels, Precast, Ready Mixes and Insitu Applications”, Portuguese national funds through FCT - Foundation for Science and Technology, IP, within the research unit C-MADE, Centre of Materials and Building Technologies (CIVE-Central covilha-4082), University of Beira Interior, Portugal.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73172538","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: 23
Contribution to the maintenance of T4 BH drilling machine (Case of the mine of Boukhadra, Algeria) 参与T4 BH钻机的维护工作(阿尔及利亚Boukhadra矿区案例)
IF 1.3
Mining Science Pub Date : 2017-01-01 DOI: 10.5277/MSC172404
A. Zoubir, N. Yamina, A. Noura
{"title":"Contribution to the maintenance of T4 BH drilling machine (Case of the mine of Boukhadra, Algeria)","authors":"A. Zoubir, N. Yamina, A. Noura","doi":"10.5277/MSC172404","DOIUrl":"https://doi.org/10.5277/MSC172404","url":null,"abstract":": The current paper presents the study of applying the FEMA method to the drill T4 BH. The research focused on the risk indicators used in the FEMA method. Pareto diagram for the description of the frequency and importance of causes that may cause a problem were applied. With participative method of brainstorming information was gathered concerning the failures that can occur in the drill machine T4BH, their causes and their effects, as well as preventive and error detection methods. The information was then processed by means of different quality instrument (cause-effect diagram) resulting in a ranking of risk coefficient used in the FMEA method.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85296836","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: 2
Feasibility of alkali-activated mining waste foamed materials incorporating expanded granulated cork 碱活化矿用废泡沫材料含膨胀粒状软木的可行性
IF 1.3
Mining Science Pub Date : 2017-01-01 DOI: 10.5277/MSC172401
Imed Beghoura, João Castro-Gomes, H. Ihsan, N. Estrada
{"title":"Feasibility of alkali-activated mining waste foamed materials incorporating expanded granulated cork","authors":"Imed Beghoura, João Castro-Gomes, H. Ihsan, N. Estrada","doi":"10.5277/MSC172401","DOIUrl":"https://doi.org/10.5277/MSC172401","url":null,"abstract":"Different combinations of mining waste mud, grounded waste glass, Portland cement, metakaolin and expanded cork were mixed together with alkaline activators (sodium silicate and sodium hydroxide solution) and as well aluminum powder or hydrogen peroxide to produce foamed lightweight materials. The size of the mineral materials is under 500 μm and expanded cork particles size is between 2 to 4 mm. The expanded cork added to the mixes changed between 10 to 40% volume of total solids. The influence of expanded cork on compressive strength was investigated. Precursors and activators were mixed together to produce a homogeneous mixture, which was placed into a cubic mold (40 x 40 x 40 mm), and cured at a temperature of 60°C, for 24 hours. After curing process, samples without foaming agents achieved the maximum compressive strength of 14.7 and 19.5 MPa for 7 and 28 days respectively. The porosity was observed by the naked eye of large voids in range of 4 mm in size. Microstructure analyses were carried on by SEM. Samples made with aluminum powder showed higher volume increase about 358% compared with samples made with hydrogen peroxide that presented a 141% volume increase. This preliminary study shows the feasibility to produce new improved lightweight foamed alkali activated materials incorporating expanded cork with potential applications in artistic, architectural, and historical heritage restoration.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72991868","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
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