Mining Scince最新文献

Geomechanical substantiation of parameters of technology for mining salt deposits with a backfill 盐矿充填开采工艺参数的地质力学论证

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc202802

J. Rybak, C. Kongar-Syuryun, Y. Tyulyaeva, A. Khayrutdinov, I. Akinshin

引用次数: 27

Computational Model of the Basic Efficiency Parameters of the Bucket Wheel Excavator Working in a Block With a Vertical Obstacle 斗轮挖掘机垂直障碍物块体工作基本效率参数计算模型

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc202814

A. Nowak-Szpak

引用次数: 0

Pullout behavior of steel reinforcements used for mechanically stabilized earth structures 机械稳定土结构用钢筋的拉拔性能

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc202804

A. Meddah, M. Sahli

引用次数: 2

Methane Emissions and Hard Coal Production in the Upper Silesian Coal Basin in Relation to the Greenhouse Effect Increase in Poland in 1994-2018 1994-2018年波兰上西里西亚煤盆地甲烷排放和硬煤产量与温室效应增加的关系

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc202805

M. Dreger

引用次数: 6

Sequencing of ore columns for planning of large underground mines 大型地下矿山规划中矿石柱的排序

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc192613

H. Glass, G. V. Hout

{"title":"Sequencing of ore columns for planning of large underground mines","authors":"H. Glass, G. V. Hout","doi":"10.37190/msc192613","DOIUrl":"https://doi.org/10.37190/msc192613","url":null,"abstract":"Block caving is an underground mining technique which extracts ore from the base, rather than from the top, of typically massive deposits. Mining infrastructure is developed below the deposit before extraction commences. A network of tunnels provides access to a collection of drawpoints from which ore is hauled. With large deposits, not all drawpoints are developed simultaneously and the opening of drawpoints is sequenced to facilitate orderly extraction of ore columns above drawpoints. Sequencing fixes the initiation point for the entire block cave, or a part of it, as well as identifying the direction of cave advancement. The drawpoint opening sequence exerts influence on the block cave mine economics. This paper discusses the optimisation of sequencing based on the net present value associated with extraction over the life-of-mine. It is shown that the maximum attainable net present value is obtained by a sequence in which ore columns are ranked in descending order of value. If significant variation of grade is present inside columns, an iterative procedure is given which corrects the sequence which yields the maximum net present value. The sequence with maximum net present value may not be practical or attractive from a caving perspective. Systematic design of sequences which permit orderly development of a block cave is discussed. To provide context, the net present value obtained from these feasible sequences is compared with the maximum attainable net present value. It is shown that the best feasible sequences are preferentially initiated in zones with columns of high-grade ore.","PeriodicalId":213542,"journal":{"name":"Mining Scince","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133197814","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

Effect of shear walls on the behavior of nonlinear structures in seismic zones 地震区剪力墙对非线性结构性能的影响

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc222901

A. Boulaouad, L. Belagraa, Ibrahim Berra

引用次数: 0

Haulage System Selection for Parvadeh Coal mine Using Multi-Criteria Decision Making Methods 基于多准则决策方法的Parvadeh煤矿运输系统选择

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc192606

M. A. Ghasvareh, Mohsen Safari, M. Nikkhah

{"title":"Haulage System Selection for Parvadeh Coal mine Using Multi-Criteria Decision Making Methods","authors":"M. A. Ghasvareh, Mohsen Safari, M. Nikkhah","doi":"10.37190/msc192606","DOIUrl":"https://doi.org/10.37190/msc192606","url":null,"abstract":"One of the key components of any project, especially mining projects, is the selection and design of haulage equipment. In most mining activities, which sometimes contain the mining machinery, haulage costs form a major part of the operating expenses so that the issue becomes a matter of concern for mine managers. The process of selecting the haulage system is not a crystal clear one because of various factors affecting the selection, leading to the complexity and multi-criterion characteristic of it. Therefore, the use of multi-criterion decision-making methods can help to solve this problem. The TOPSIS, AHP, VIKOR methods among the multi-criterion decision-making methods are some options based on priority ranking. In this paper, the loading systems of conveyors, wagons and winches as well as the locomotives and wagons are investigated. Then, the aforementioned systems are used to make a hybrid based on eight criteria, which yields the best loading system for the Parvadeh coal mine in Tabas. In order to use the above methods, some integration techniques were utilized because the results were not consistent with each other in some cases. After integrating the results of the ranking methods, the conveyor haulage system was eventually introduced as the best option.","PeriodicalId":213542,"journal":{"name":"Mining Scince","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124750911","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

Structural features of gem minerals and identification and evaluation 宝石矿物的结构特征及鉴定评价

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc192608

Mei An, Yongzhe Zhou, Yangjie Liu

引用次数: 0

Effective methods of chalcedonite processing 玉髓石加工的有效方法

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc202801

Z. Naziemiec, D. Saramak

引用次数: 1

SCALE OF POLLUTIONS WITH HEAVY METALS IN WATER AND SEDIMENT OF RIVER IBËR FROM LANDFILL IN KELMEND, KOSOVO 科索沃克尔门德填埋的水和河流ibËr沉积物中重金属污染的规模

Mining Scince Pub Date : 1900-01-01 DOI: 10.37190/msc192610

S. Kadriu

{"title":"SCALE OF POLLUTIONS WITH HEAVY METALS IN WATER AND SEDIMENT OF RIVER IBËR FROM LANDFILL IN KELMEND, KOSOVO","authors":"S. Kadriu","doi":"10.37190/msc192610","DOIUrl":"https://doi.org/10.37190/msc192610","url":null,"abstract":"Pollution with heavy metals and waters in Mitrovica with surroundings, both in the past and in present days, is a preoccupation for the citizens of Mirtovica, as well as for the other inhabitants living around it. Such a problem has been a concern which still continues for a number of researchers who have been dealing with this issue, and wo still continue to be preoccupied with the issue of heavy metal (habitat) pollution in this part of Kosovo. Heavy metal’s contamination of the environment’s main components, dates back to the 1970s / 90s to this date. This pollution, especially of the rivers, is due to the industrial activity taking place in the Trepça Combine and the presence of industrial landfill sites of this Combine near the flow of two main rivers: the Sitnica and Ibër River waters, in the city of Mitrovica. The focus of our study, this time consists solely in the research and illumination of pollution with these heavy metals and waterworks of the Ibër River, as a result of the pollution caused by the industrial waste landfill located in Kelmend village. In the paper, we have attempted to show the concentration of heavy metals in sediment and water, by pointing at four sample sites of the Ibër river: in the Bosniak U1 neighborhood, then in the flow in front the U2 landfill, discharge flows from landfill U3 and a certain distance from the U4 landfill.","PeriodicalId":213542,"journal":{"name":"Mining Scince","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121881084","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: 3