Archives of Mining Sciences最新文献_第8页

Simulation for Motion of Platform During Truck Changing in Trucklift Slope Hoisting System in Open Pit Mines Using ADAMS and Matlab/Simulink 利用ADAMS和Matlab/Simulink对露天矿汽车升降边坡提升系统换车过程中平台运动进行仿真

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2021.138596

Tok Hyong Han, kwAng Hyok kiM, U. Han

引用次数: 0

Potentiality of Obtaining Mica Flotation Concentrate from Kaolinised Granite 从高岭土花岗岩中获得云母浮选精矿的潜力

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/AMS.2019.129365

Ž. Sekulić, Slavica Mihajlović, J. Stojanovic, Branislav Ivošević, Vladan Kašić, M. Ignjatović

引用次数: 2

Modelling of Limestone Calcination for Optimisation of Parallel Flow Regenerative Shaft Kiln (PFR), Case Study: Iran Alumina Plant 优化并流再生竖窑（PFR）的石灰石煅烧建模，案例研究：伊朗氧化铝厂

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2022.141454

{"title":"Modelling of Limestone Calcination for Optimisation of Parallel Flow Regenerative Shaft Kiln (PFR), Case Study: Iran Alumina Plant","authors":"","doi":"10.24425/ams.2022.141454","DOIUrl":"https://doi.org/10.24425/ams.2022.141454","url":null,"abstract":"to produce the lime required for the bayer process, two parallel flow regenerative shaft kilns (pFr) were used in the iran Alumina plant located in Jajarm, north Khorasan province, iran. in this study, the calcination conditions of limestone were modelled in a laboratory furnace by considering three factors of limestone size, temperature and calcination time using the box-behnken method. the calcination model of limestone was obtained using a quadratic equation. due to the importance of limestone dust in the performance of industrial kilns, conditions of calcification and its reactivity with water were examined at three temperature ranges of 800, 1000, and 1200°C, by two methods of titration and standard AStM C110. the results indicated a decrease in reactivity of lime relative to the increased temperature of calcination and the lack of forming the burnt lime particles that stick together (blocking). Finally, the ratio of input limestone (kg) to fuel (m 3 ) was reduced from 16.4 to 15.3 to increase the average temperature of the burning zone to 1000°C. Also, excess air was reduced from 40 to 20%. in this condition, the lime quality was increased by about 6% in the kilns.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47240472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Key Technologies and its Application of Gob-Side Entry Retaining by Roof Cutting in a Deep Mine 深部采场采空区顶板掏槽支护的关键技术及其应用

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2022.140702

Shang-Jen Chen, Q. Lv

{"title":"Key Technologies and its Application of Gob-Side Entry Retaining by Roof Cutting in a Deep Mine","authors":"Shang-Jen Chen, Q. Lv","doi":"10.24425/ams.2022.140702","DOIUrl":"https://doi.org/10.24425/ams.2022.140702","url":null,"abstract":"There are many problems associated with the surrounding rocks of the gob-side entry retaining by roof cutting (gERRC) as they are difficult to stabilise in deep mines. The following needs to be studied to understand the problems such as the pressure relief mechanism, evolution law of the surrounding-rock stress and the key technologies of gERRC in deep mines. Cracks are formed by advanced directional blasting to sever the path of stress transmission from the roof of the goaf to the roof of the entry and reduce the lateral cantilever length of the roof. Therefore the surrounding-rock stress and roof structure are optimised. The broken and expanded gangue formed by the collapse of the strata in the range of roof cutting fills the mining space adequately, which avoids a rapid pressure increase caused by the roof breaking impact and slows down the movement of overlying strata. The deformation of the deep surrounding rocks is transformed from “abrupt” to “slow”, and the surrounding-rock deformation of the retained entry in deep mines is significantly reduced. The average pressure and periodic pressure of the supports near the blasting line can be reduced by the blasting cracks to a certain extent, mainly due to the reduction of the length of the immediate roof cantilever and the effective load of the main roof. The combined support technologies for gERRC in deep mines were proposed, and field tests were performed. The monitoring results show that the coordinated control system can effectively control the deformation of deep rock masses, and all indexes can meet the requirements of the next working face after the retained entry is stabilised.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46350313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Influence of Impurities and Fabrics on Mechanical Properties of Rock Salt for Underground Storage in Salt Caverns – a Review 杂质和织物对地下储盐岩盐力学性能的影响

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2021.137454

K. Cyran

{"title":"The Influence of Impurities and Fabrics on Mechanical Properties of Rock Salt for Underground Storage in Salt Caverns – a Review","authors":"K. Cyran","doi":"10.24425/ams.2021.137454","DOIUrl":"https://doi.org/10.24425/ams.2021.137454","url":null,"abstract":"Salt caverns are used for the storage of natural gas, LPG, oil, hydrogen, and compressed air due to rock salt advantageous mechanical and physical properties, large storage capacity, flexible operations scenario with high withdrawal and injection rates. the shortand long-term mechanical behaviour and properties of rock salt are influenced by mineral content and composition, structural and textural features (fabrics). Mineral composition and fabrics of rock salt result from the sedimentary environment and post sedimentary processes. the impurities in rock salt occur in form of interlayers, laminae and aggregates. the aggregates can be dispersed within the halite grains or at the boundary of halite grains. Mineral content, mineral composition of impurities and their occurrence form as well as halite grain size contribute to the high variability of rock salt mechanical properties. the rock or mineral impurities like claystone, mudstone, anhydrite, carnallite and sylvite are discussed. Moreover, the influence of micro fabrics (in micro-scale) like fluid inclusions or crystals of other minerals on rock salt mechanical performance is described. In this paper the mechanical properties and behaviour of rock salt and their relation to mineral composition and fabrics are summarised and discussed. the empirical determination of impurities and fabrics impact on deformation mechanism of rock salt, qualitative description and formulation of constative models will improve the evaluation and prediction of cavern stability by numerical modelling methods. Moreover, studying these relations may be useful in risk assessment and prediction of cavern storage capacity.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46511522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

MATHEMATICAL MODEL OF TRANSVERSE VIBRATIONS OF A HIGH-CAPACITY MINING SKIP DUE MISALIGNMENT OF THE GUIDING TRACKS IN THE HOISTING SHAFT 大容量矿用箕斗因提升井导轨错位引起的横向振动数学模型

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/118882

M. Płachno

引用次数: 3

Paraseismic Resistance Evaluation for Existing Steel Conveyor Bridge Subjected to Mining Tremors 既有钢结构输送桥在采矿震动作用下的抗异震性评价

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2022.143677

引用次数: 0

Roadway Support Design Based on In-situ Stress and Its Asymmetrical Distributions in a Coal Mine 基于地应力及其不对称分布的某煤矿巷道支护设计

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/AMS.2020.133194

H. Guo, M. Ji, Weisheng Zhao

引用次数: 1

The Assessment of Longwall Working Stability Based on the Mohr-Coulomb Stress Criterion – Numerical Analysis 基于Mohr-Coulomb应力准则的长壁工作稳定性评估-数值分析

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2020.134131

T. Janoszek

{"title":"The Assessment of Longwall Working Stability Based on the Mohr-Coulomb Stress Criterion – Numerical Analysis","authors":"T. Janoszek","doi":"10.24425/ams.2020.134131","DOIUrl":"https://doi.org/10.24425/ams.2020.134131","url":null,"abstract":"The use of computer techniques at the design stage of industrial facilities is essential in modern times. The ability to shorten the time required to develop a project and assess the safety of the use of assumptions, often enables the reduction of the costs incurred in the future. The possibility to skip expensive prototype tests by using 3D prototyping is why it is currently the prevailing model in the design of industrial facilities, including in the mining industry. In the case of a longwall working, its stability requires the maintenance of the geometric continuity of floor rocks in cooperation with a powered roof support. The paper investigates the problem of longwall working stability under the influence of roof properties, coal properties, shield loading and the roof-floor interaction. The longwall working stability is represented by an index, factor of safety (FOS), and is correlated with a previously proposed roof capacity index ‘g‘. The topic of the paper does address an issue of potential interest. The assessment of the stability of the roof in longwalls was based on the numerical analysis of the factor of safety (FOS), using the Mohr-Coulomb stress criterion. The Mohr-Coulomb stress criterion enables the prediction of the occurrence of failures when the connection of the maximum tensile principal stress σ1 and the minimum compressive principal stress σ3 exceed relevant stress limits. The criterion is used for materials which indicates distinct tensile and compressive characteristics. The numerical method presented in the paper can be utilized in evaluating the mining natural hazards through predicting the parameters, which determine the roof maintenance in the longwall working. One of the purposes of the numerical analysis was to draw attention to the possibilities that are currently created by specialized software as an important element accompanying the modern design process, which forms part of intelligent underground mining 4.0.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47967281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Development and Application of an Experimental Device for Measuring Storage Coefficient in a Coal Mine Underground Reservoir 煤矿地下水库蓄水系数测试实验装置的研制与应用

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2019.129375

Beifang Wang, Keming Sun, B. Liang, Weiji Sun

引用次数: 5