Journal of Sustainable Mining最新文献_第3页

Influence of cutting parameters on the performance of plough during hard rock cutting in coal mining 煤矿硬岩切削时切削参数对犁性能的影响

IF 1

Journal of Sustainable Mining Pub Date : 2023-07-17 DOI: 10.46873/2300-3960.1388

S. Palaniappan, M. Chinnasamy, S. Pal, Rajasekar Rathanasamy

{"title":"Influence of cutting parameters on the performance of plough during hard rock cutting in coal mining","authors":"S. Palaniappan, M. Chinnasamy, S. Pal, Rajasekar Rathanasamy","doi":"10.46873/2300-3960.1388","DOIUrl":"https://doi.org/10.46873/2300-3960.1388","url":null,"abstract":"Abstract Coal ploughs have proved very successful on many faces in various parts of the world. Recently, there has been a general tendency in longwall working to increase the speed at which the machine progresses along the coal face. An increase in production rate demands enhances either due to depth of penetration or cutting speed. This, in turn, results in increasing power demand and also the force acting on an individual pick. To get maximum efficiency from a cutting machine, a number of parameters need to be investigated. The first and foremost thing of interest is naturally the pick geometry. The cutting force can be expected to depend mainly on the rack angle and clearance angle of the tool. The second parameter is the cutting depth, which when enhanced, increases the rate of advancement and, at the same time, results in enhanced cutting force. This results in large power demand and increases wear of picks. Thirdly, cutting speed, in which higher cutting speed will increase the production rate but at the same time is expected to enhance the power demand and the cutting force. This paper aims at investigating the cutting efficiency of the plough by simulating the coal cutting operation in the laboratory. The effect of three main parameters like pick geometry, cutting depth, and cutting speed, on cutting efficiency have been studied in detail. The cutting force elevates at a faster rate with an increase in depth at higher speeds. The percentage increase in force is nearly 20% for a speed increase of 20%.","PeriodicalId":37284,"journal":{"name":"Journal of Sustainable Mining","volume":"94 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91049277","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

Geophysical imprint of mining-induced rock mass deformation in the area of construction disaster in Bytom (Poland) 波兰Bytom建筑灾害区采动岩体变形的地球物理印记

IF 1

Journal of Sustainable Mining Pub Date : 2023-07-14 DOI: 10.46873/2300-3960.1386

A. Kotyrba, Łukasz Kortas

{"title":"Geophysical imprint of mining-induced rock mass deformation in the area of construction disaster in Bytom (Poland)","authors":"A. Kotyrba, Łukasz Kortas","doi":"10.46873/2300-3960.1386","DOIUrl":"https://doi.org/10.46873/2300-3960.1386","url":null,"abstract":"Abstract The paper presents the analysis of the results of geophysical surveys conducted in the mining area located in Bytom – Karb (USCB, Poland) in the aspect of identifying the causes of significant damage to the complex of inhabited tenement houses which occurred in 2011. The surveys were carried out by microgravimetric and GPR methods. The construction disaster was caused by the exploitation of one of the hard coal seams at a depth of about 800 m along the mining longwall running underneath the settlement. The terrain deformation parameters exceeded the forecasted values, and in several places discontinuities took linear forms along the diagonal directions to the front lines of the longwall. In addition to the sliding movement, the rotational movement appeared in the ground. As a consequence of spatially complex ground movements, some buildings suffered significant damage. The extent of the damage turned out to be catastrophic and immediate relocation of the inhabitants and demolition of the buildings became necessary. The article is an attempt to explain the nature and the causes of excessive terrain deformations in relation to those modeled on the basis of analysis and interpretation of geophysical data from the current measurements as well as archival maps and geological and mining cartography data.","PeriodicalId":37284,"journal":{"name":"Journal of Sustainable Mining","volume":"12 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73075185","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

Status and prospects of fully mechanized mining technology in Vietnam coal mines from 2005 to 2020 2005 - 2020年越南煤矿综采技术现状与展望

IF 1

Journal of Sustainable Mining Pub Date : 2023-06-29 DOI: 10.46873/2300-3960.1383

Hai Duong Duc, Qu Hong, Viet Phan Van, Thang Ngo Van

引用次数: 0

Evaluating the impacts of the transition from open-pit to underground mining on sustainable development indexes 评价露天转地下开采对可持续发展指标的影响

IF 1

Journal of Sustainable Mining Pub Date : 2023-06-28 DOI: 10.46873/2300-3960.1382

Naser Badakhshan, K. Shahriar, Sajjad Afraei, E. Bakhtavar

{"title":"Evaluating the impacts of the transition from open-pit to underground mining on sustainable development indexes","authors":"Naser Badakhshan, K. Shahriar, Sajjad Afraei, E. Bakhtavar","doi":"10.46873/2300-3960.1382","DOIUrl":"https://doi.org/10.46873/2300-3960.1382","url":null,"abstract":"Abstract Sustainable development is about creating a balance between development and environment, and it consists of three essential principles: environment, society, and economy. Today, one of the most important challenges in deep open pit mines is the transition from open pit to underground, which has positive and negative impacts on sustainable development indexes. In order to reduce these adverse impacts, the impact of various parts of the transition operation on these indexes should be evaluated and corrective and preventive measures should be implemented. In this study, using a hybrid semi-quantitative approach, the effects of the transition in the Songun copper mine were evaluated. The obtained results showed that the transition in Songun copper mine has the greatest impact on the economic index of sustainable development with a value of 67.72 percent. In addition, the amount of impact of transition in this mine on environmental and social index is 41.74 and 39.84% respectively. In the meantime, the most significant impact was determined on components such as production rate and productivity, mine life, operation and capital cost, mineral value and income per ton of ore, mine closure (and reclamation) cost, Initial investment rate of returns, post–mining land use type.","PeriodicalId":37284,"journal":{"name":"Journal of Sustainable Mining","volume":"22 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78831325","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

Applications of UAVs in mine industry: A scoping review 无人机在矿山工业中的应用综述

IF 1

Journal of Sustainable Mining Pub Date : 2023-06-27 DOI: 10.46873/2300-3960.1384

D. Minh, Nguyen Ba Dung

引用次数: 0

Evaluating the post-mining land uses of former mine sites for sustainable purposes in South Africa 评价南非前矿区采矿后土地的可持续用途

IF 1

Journal of Sustainable Mining Pub Date : 2023-06-22 DOI: 10.46873/2300-3960.1381

S. E. Mhlongo

{"title":"Evaluating the post-mining land uses of former mine sites for sustainable purposes in South Africa","authors":"S. E. Mhlongo","doi":"10.46873/2300-3960.1381","DOIUrl":"https://doi.org/10.46873/2300-3960.1381","url":null,"abstract":"This paper uses a case study of an abandoned magnesite mine in the Limpopo Province of South Africa to find ways of identifying post-mining land used from the current uses of the abandoned mine sites or features. The approach used involved carrying out a field characterization of the mine site and documentation of the current uses of the features of the abandoned mine site. The technique used to identify the internal and external factors of the land uses involved analyzing their Strength, Weakness, Opportunities, and Threats. The Analytic Hierarchy Process (AHP) technique was used for further ranking of the land uses to identify the most post-mining or rehabilitation land uses for the different parts of the mine. Lastly, the earthwork requirement in reshaping the terrain of the mine to support the selected land uses was estimated from the 3D-terrain models generated from height data collected using a Real-Time Kinematic Geographical Positioning System. The results of the study identified land use that needs further surface development as the most appropriate for the abandoned Nyala Mine. These land uses demonstrated the potential of addressing the hazards of the mine with the clear promise of improving the socio-economic status of the host communities.","PeriodicalId":37284,"journal":{"name":"Journal of Sustainable Mining","volume":"11 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84956240","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

Research on stability of rock mass and +30 level surface construction works when re-exploiting the seam H10 at Mong Duong Coal Mine, Vietnam 越南Mong Duong煤矿H10煤层再开采时岩体稳定性及+30水平地面施工工程研究

IF 1

Journal of Sustainable Mining Pub Date : 2023-06-22 DOI: 10.46873/2300-3960.1380

Tien Trung Vu, Doan Viet Dao

{"title":"Research on stability of rock mass and +30 level surface construction works when re-exploiting the seam H10 at Mong Duong Coal Mine, Vietnam","authors":"Tien Trung Vu, Doan Viet Dao","doi":"10.46873/2300-3960.1380","DOIUrl":"https://doi.org/10.46873/2300-3960.1380","url":null,"abstract":"The re-exploitation of coal seams located near the ground is one of the solutions to increase output, reduce mining investment costs, and avoid wasting coal resources. The re-exploitation of coal seams will also cause instability of the surrounding rock mass and may affect surface construction works. Through the process of re-exploiting the longwall in seam H10 at Mong Duong Coal Mine, the authors have studied and evaluated the stability of the rock mass and +30 level surface works (including fan station and gateroad). To achieve the results in this study, the numerical simulation model method and the analytical method were applied. The model analysis results have determined that the displacement and deformation areas of the rock mass around the mining area correspond to the length of the cut in the strike direction of the longwall H10. The analysis and calculation results from the model show that the longwall in seam H10 can be re-exploited when leaving a protective coal pillar about 50 m from the center of the +30 fan station at the east side; this distance ensures the stability of the rock mass that located near the ground and the surface works at +30.","PeriodicalId":37284,"journal":{"name":"Journal of Sustainable Mining","volume":"104 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85867899","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

Time variability of methane extraction from hard coal deposits in the Upper Silesian Coal Basin (Poland) in relation to geological and mining conditions 上西里西亚煤盆地(波兰)硬煤矿床甲烷开采的时间变异性与地质和采矿条件的关系

IF 1

Journal of Sustainable Mining Pub Date : 2023-06-20 DOI: 10.46873/2300-3960.1379

S. Kędzior, M. Dreger

{"title":"Time variability of methane extraction from hard coal deposits in the Upper Silesian Coal Basin (Poland) in relation to geological and mining conditions","authors":"S. Kędzior, M. Dreger","doi":"10.46873/2300-3960.1379","DOIUrl":"https://doi.org/10.46873/2300-3960.1379","url":null,"abstract":"Abstract The extraction and economical use of methane from coal mines in the Upper Silesian Coal Basin, Poland (USCB) have shown a variable tendency in recent decades, with numerous fluctuations from year to year. In 2021, approximately 286 million m3 of methane was collected from coal mines, which accounted for approximately 40% of the total emissions of this gas to mine workings. Due to the fact that the economical use of coal mine methane brings environmental, economic and work safety benefits, increasing its extraction is an urgent need. Trends in changes in the amount of mined methane in the entire USCB and in the deposits where the most methane was extracted in the last 25 years were analysed. The most important potential factors influencing the variability of coal mine gas extraction were taken into account, i.e. elements of the geological structure, coal extraction, methane emissions, mining and technical conditions, etc. The directions for using the collected methane and the main consumers were discussed. The aim is to indicate the most important problems faced by coal mining in terms of the capture and management of methane over the last 25 years and to outline possible solutions.","PeriodicalId":37284,"journal":{"name":"Journal of Sustainable Mining","volume":"60 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90652599","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

Diagnostic gold deportment studies and leaching behaviour of small-scale gold mining tailings from Eastern Region, Ghana 加纳东部地区小型金矿尾矿的诊断性金态研究和浸出行为

IF 1

Journal of Sustainable Mining Pub Date : 2023-03-30 DOI: 10.46873/2300-3960.1375

I. Quaicoe, Martin Beyuo, Solomon Quaicoe, Nikao A. Lasidzi

{"title":"Diagnostic gold deportment studies and leaching behaviour of small-scale gold mining tailings from Eastern Region, Ghana","authors":"I. Quaicoe, Martin Beyuo, Solomon Quaicoe, Nikao A. Lasidzi","doi":"10.46873/2300-3960.1375","DOIUrl":"https://doi.org/10.46873/2300-3960.1375","url":null,"abstract":"Abstract Artisanal and small-scale gold mining (ASGM) sector employs about 80% of the mining workforce but only contributes about 20-30% of Ghana’s gold production. The low gold production is linked to low recoveries associated with the activities because ofinadequate understanding of the chemical, mineralogical and metallurgical characteristics of the ores. This study examined the metallurgical characteristics of typical small-scale gold mining tailings to understand their grinding characteristics, gold deportment and cyanidation behaviour. The gold deportment results showed that 96.1% of the gold in the samples is free milling (can be leached directly with cyanide and recovered through carbon adsorption), whilst the remaining 3.9% of the gold in the samples is associated/locked up with other mineral phases (carbonates, sulphides, carbonaceous matter and quartz). The gold-by-size distribution also indicated that 73.1% of the gold is contained in coarser size fractions (+150 µm), 14.96% isfrom–150 µm to +75 µm size range, and 11.83% is contained in the finer size distribution (–75 µm). This suggests that incorporating a gravity recovery system during processing will be highly advantageous. The leaching kinetics results showed that gold recoveries achieved within 8, 16 and 24 h were 68, 73.8 and 76.4%, respectively. The corresponding total cyanide consumption rates after 8, 16 and 24 h of leaching were 550, 580 and 600 ppm, respectively. Generally, the gold recoveries and the cyanide consumption rates agree with industrial practices/results. Overall, the outcomes of the study support the view that some small-scale gold mining tailings are economically viable, and hence can be re-processed through efficient processes such as carbon-in-leach/carbon-in-pulp.","PeriodicalId":37284,"journal":{"name":"Journal of Sustainable Mining","volume":"14 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78879908","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

Acknowledgments of Reviewers 审稿人致谢

Journal of Sustainable Mining Pub Date : 2023-01-16 DOI: 10.46873/2300-3960.1378

引用次数: 0