发布求助
文献互助 智能选刊 最新文献

Mining Science and Technology最新文献

筛选
英文 中文
Brittleness and micro-scale rock cutting efficiency 脆性和微尺度岩石切削效率
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90339-E
R.M. Göktan
{"title":"Brittleness and micro-scale rock cutting efficiency","authors":"R.M. Göktan","doi":"10.1016/0167-9031(91)90339-E","DOIUrl":"10.1016/0167-9031(91)90339-E","url":null,"abstract":"<div><p>Considering the attempts of some previous researchers to relate rock brittleness to the selection, design and operating efficiency of cutting machines, a study is presented to contribute to the understanding of the fundamental relationships between brittleness and the cutting efficiency of chisel picks.</p><p>Although there is not a universally accepted definition of and measurement principle for rock brittleness, in this study a more common formulation of brittleness—from compressive and tensile strength—has been adopted. Brittleness and specific energy values derived from the experimental works of various researchers were used to examine the correlations between these two parameters. The analysis of the available experimental findings indicated that the brittleness concept adopted in this work might not be a representative measure of rock cutting specific energy consumption.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 237-241"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90339-E","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75758549","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: 61
An overview of condition monitoring and an expert system for longwall mining machinery 长壁矿山机械状态监测及专家系统研究综述
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90455-L
A. Basu , Li Yuejin , R.N. Singh
{"title":"An overview of condition monitoring and an expert system for longwall mining machinery","authors":"A. Basu ,&nbsp;Li Yuejin ,&nbsp;R.N. Singh","doi":"10.1016/0167-9031(91)90455-L","DOIUrl":"10.1016/0167-9031(91)90455-L","url":null,"abstract":"<div><p>This paper overviews the condition monitoring techniques and presents some examples of current longwall mining machinery applications. An expert system for condition monitoring purposes is discussed together with several case histories for underground mining machinery maintenance programs. The development of the instrumentation for longwall condition monitoring is reviewed and strategies of the development of the condition monitoring and expert system for longwall mining machinery are proposed.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 279-290"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90455-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88252308","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: 9
On the state of methane in coal seams 论煤层中甲烷的状态
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90832-W
I.L. Ettinger , V.V. Serpinsky
{"title":"On the state of methane in coal seams","authors":"I.L. Ettinger ,&nbsp;V.V. Serpinsky","doi":"10.1016/0167-9031(91)90832-W","DOIUrl":"https://doi.org/10.1016/0167-9031(91)90832-W","url":null,"abstract":"<div><p>Investigation in the “coal seam gas” physical-chemical system existing in gas-containing coal seams is one of the most important problems in mining science. The fact that the combination of methane with the coal seam and the influence of the seam development conditions upon gas transfer in the coal seam have not been sufficiently investigated, hinders the development of coal deposits and a wide utilization of methane from those deposits for energy. In particular, the problems of methane sorption process thermodynamics in the microporous structure of coal; gas-containing coal seam deformation mechanics; the nature of coal and gas outbursts; and the intensity of methane extract from coal deposits remain unsolved.</p><p>Any advance in the development of methane resources is impossible without understanding of the problems of the methane state in gas containing coal seams.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 403-407"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90832-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91726060","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: 9
The area of influence of groundwater pumping: determination by geostatistical method in a case study 抽取地下水的影响范围:在个案研究中用地质统计学方法确定
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90745-X
S. Majumder, N.S. Sundaram
{"title":"The area of influence of groundwater pumping: determination by geostatistical method in a case study","authors":"S. Majumder,&nbsp;N.S. Sundaram","doi":"10.1016/0167-9031(91)90745-X","DOIUrl":"https://doi.org/10.1016/0167-9031(91)90745-X","url":null,"abstract":"<div><p>In opencast mines the mining activity often proceeds below the original piezometric surface of the aquifer in the area. Massive dewatering operations from the aquifer are resorted to in order to lower the piezometric surface and thus to prevent flooding of the working places. The influence of pumping ususally extends beyond the mining limit. To determine the extent of influence, it is suggested here to apply the geostatistical method: the semi-variograms of the drawdown levels. A case study using this method is presented and the variation of the area of influence with pumping is shown. An empirical relationship between the area of influence and the cumulative quantity of water pumped has been obtained for the mine.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 383-387"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90745-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91726072","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
Quality comparison of mining equipment based on their technical characteristics 基于技术特点的矿山设备质量比较
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90484-T
V. Čokorilo, M. MiliČić
{"title":"Quality comparison of mining equipment based on their technical characteristics","authors":"V. Čokorilo,&nbsp;M. MiliČić","doi":"10.1016/0167-9031(91)90484-T","DOIUrl":"10.1016/0167-9031(91)90484-T","url":null,"abstract":"<div><p>A methodology has been used to compare the quality of mining equipment based on technical characteristics. The method can correspond to the many demands of comparisons between different types of mining equipment based on their quality.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 291-296"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90484-T","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85657463","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
Solder properties for soldering solid pseudo alloy plates of monoblock bit obtained through testing for percussive drilling 通过冲击钻井试验，获得了焊接单块钻头固体伪合金板的焊料性能
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90513-C
P. Trifunović
{"title":"Solder properties for soldering solid pseudo alloy plates of monoblock bit obtained through testing for percussive drilling","authors":"P. Trifunović","doi":"10.1016/0167-9031(91)90513-C","DOIUrl":"10.1016/0167-9031(91)90513-C","url":null,"abstract":"<div><p>During a study of the properties of solder, used as a binding material between a solid pseudo alloy plate and the steel base head of a monoblock bit, the focus was put on determining the qualitative-quantitative solder composition, measuring solder thickness in the clearance between the solid pseudo alloy plate and steel base, and measuring the hardness of the solder itself. Those parameters have a predominant effect on the quality of bonds, as well as on the exploitation life of the monoblock bit during percussion drilling in mining.</p><p>Measurement of the above parameters was performed on heads of monoblock bits that had been used for drilling in the working conditions of the various physicomechanical and abbrasive environments of Yugoslav mines.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 297-300"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90513-C","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88299972","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
An adiabatic apparatus to establish the spontaneous combustion propensity of coal 一种测定煤自燃倾向的绝热装置
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90890-O
M.J. Gouws , G.J. Gibbon , L. Wade , H.R. Phillips
{"title":"An adiabatic apparatus to establish the spontaneous combustion propensity of coal","authors":"M.J. Gouws ,&nbsp;G.J. Gibbon ,&nbsp;L. Wade ,&nbsp;H.R. Phillips","doi":"10.1016/0167-9031(91)90890-O","DOIUrl":"https://doi.org/10.1016/0167-9031(91)90890-O","url":null,"abstract":"<div><p>An adiabatic calorimeter has been designed to enable the spontaneous combustion propensity of coal to be established. The experiment was designed to run unattended, with a personal computer being used for measurement and control functions. All measurements are stored on a data diskette while the experiment is in progress.</p><p>The calorimeter was designed to be run in both a rising temperature mode and and an incubation mode. Various indicators of self-heating potential, such as total temperature rise, initial rate of heating, minimum self-heating temperature, and kinetic constants can be investigated.</p><p>Results obtained from the adiabatic tests will be compared with the results of crossing-point temperature determinations and differential thermal analysis (DTA) tests for the same coals, with a view to formulating a mathematically consistent spontaneous combustion liability index. This paper describes the major components of the adiabatic calorimeter.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 417-422"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90890-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91726061","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: 21
Analysis of symmetric contact charge action in breaking rock boulders 岩石破碎过程中对称接触电荷作用分析
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90977-K
Wei Wu
{"title":"Analysis of symmetric contact charge action in breaking rock boulders","authors":"Wei Wu","doi":"10.1016/0167-9031(91)90977-K","DOIUrl":"https://doi.org/10.1016/0167-9031(91)90977-K","url":null,"abstract":"<div><p>A new method is proposed for more effective breakage of rock boulders during secondary blasting. It is suggested that by placing two contact charges at symmetrical locations on a boulder's surface, one can take advantage of stress wave interaction within the block and, especially, the superposition of reflected tensile waves from the free boundary of the boulder. Theoretical calculations based on elastodynamics and dynamic photoelastic experiments showed the existence of stress concentration within a finite block under symmetric loading conditions, which could lead to spliting of the block along loading points. Blasting tests on mortar models of various shapes further confirmed the possibility of rock boulder fracture by this method.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 439-444"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90977-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91726066","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
Size distribution of airborne dust produced by the drilling process 钻孔过程中产生的空气粉尘的粒径分布
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90774-7
Tevfik Güyagüler
{"title":"Size distribution of airborne dust produced by the drilling process","authors":"Tevfik Güyagüler","doi":"10.1016/0167-9031(91)90774-7","DOIUrl":"https://doi.org/10.1016/0167-9031(91)90774-7","url":null,"abstract":"<div><p>The aim of this work was to investigate the size distribution of dust particles produced during the drilling process. It has already been proved that the degree of harmful effect of inhaled dust is closely related with dust particle size. The dust data needed to determine size distribution were obtained by sampling dusty atmospheres during the drilling process with a short-period thermal precipitator.</p><p>Drilling and dust sampling processes were carried out in a model gallery which simulated the working face. Rock samples used in drilling were brought from the various galleries of Kozlu mines, Zonguldak Colliery. The tests were carried on four types of sandstones, two types of shales and conglomerate, in total seven types of sedimentary rock. For each type of rock six dust samples were taken and evaluated.</p><p>It is concluded that the frequency distribution of airborne dust particles produced by each rock type is approximately lognormal. The geometric mean values of dust particles for sandstone, shales and conglomerate are found to be 0.89, 0.95 and 0.83 μm respectively. In other words, the mean value of dust particles produced during the drilling operation of different rocks are around 1 μm in diameter, which has the maximum probability to be retained in the lungs during respiration.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 389-394"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90774-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91726071","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
A critical review of mine subsidence prediction methods 矿山沉陷预测方法综述
Mining Science and Technology Pub Date : 1991-12-01 Epub Date: 2004-11-29 DOI: 10.1016/0167-9031(91)90716-P
P.P. Bahuguna , A.M.C. Srivastava , N.C. Saxena
{"title":"A critical review of mine subsidence prediction methods","authors":"P.P. Bahuguna ,&nbsp;A.M.C. Srivastava ,&nbsp;N.C. Saxena","doi":"10.1016/0167-9031(91)90716-P","DOIUrl":"https://doi.org/10.1016/0167-9031(91)90716-P","url":null,"abstract":"<div><p>A review of the application of existing subsidence prediction methods available is presented. A brief description of all the three methods—empirical, functional and mechanistic—is given and merits and demerits of each method are discussed. A review of the applications of each method in different parts of the world and recommendations for research on further improvements in each method are given for the state of the art of subsidence prediction. Methods using the functional approach, especially those of influence function, are found, at present, to be the most reliable and practicable, however there is still scope for improvements in this approach, to incorporate the effects of various subsidence-inducing parameters by the use of complementary functions.</p></div>","PeriodicalId":100929,"journal":{"name":"Mining Science and Technology","volume":"13 3","pages":"Pages 369-382"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-9031(91)90716-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91726074","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: 45
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书