Archives of Mining Sciences最新文献_第10页

Analysis of Mercury Content Inside Mining Waste Dump – Case Study in the Upper Silesia in Poland 矿山排土场汞含量分析——以波兰上西里西亚为例

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2022.140704

引用次数: 0

Evaluation of the Possibility of Using Granulated Carbonated Volatile Fly Ash from Fluidized Beds (G-CVFA) in Underground Mining Techniques 流化床颗粒化碳酸化挥发性粉煤灰(G-CVFA)在地下采矿技术中应用的可能性评价

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2020.134144

Jadwiga Proksa, M. Łączny, Z. Bzowski

{"title":"Evaluation of the Possibility of Using Granulated Carbonated Volatile Fly Ash from Fluidized Beds (G-CVFA) in Underground Mining Techniques","authors":"Jadwiga Proksa, M. Łączny, Z. Bzowski","doi":"10.24425/ams.2020.134144","DOIUrl":"https://doi.org/10.24425/ams.2020.134144","url":null,"abstract":"The application of fluidized fly ash in underground mining excavations is limited due to its significant content of free calcium and calcium sulfate. In order to increase the amount of utilized fly ash from fluidized beds, it should be converted to a product with properties that meet the requirements for mining applications. This research presents the results of an attempt to adapt fluidized fly ashes for use in underground mining techniques, by means of carbonation and granulation. Carbonation was performed with the use of technical carbon dioxide and resulted in the reduction of free calcium content to a value below 1%. Granulation on the other hand, resulted in obtaining a product with good physical and mechanical parameters. The performed mineralogical and chemical studies indicate that trace amounts of “binding” phases, such as basanite and/or gypsum are present in the carbonized ash. The addition of water, during the granulation of carbonized fluidized fly ash, resulted in changes in the mineral phases leading to the formation of ettringite and gypsum as well as the recrystallization of the amorphous substance. It was confirmed that the carbonization and granulation of flying fluidized ashes positively affects the possibility of using these ashes in underground mining excavations.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49032039","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

Strain and Force Measurement in Wire Guide 钢丝导轨中的应变和力测量

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/122450

J. Juraszek

{"title":"Strain and Force Measurement in Wire Guide","authors":"J. Juraszek","doi":"10.24425/122450","DOIUrl":"https://doi.org/10.24425/122450","url":null,"abstract":"The paper presents a new method for measuring the strain and load of wire ropes guide using fiber optic sensors with Bragg gratings. Its principle consists in simultaneous fiber optic measurement of longitudinal strain of the rope and transverse strain of the bolt fixing the rope. The tensometric force transducers which have been used so far were only able to determine the load in the head securing the rope through an indirect measurement using a special strain insert. They required calibration, compensation of temperature changes, as well as periodic checking and calibration. The head fastening the rope required significant design changes. Measurement based on fiber optic sensors does not have these drawbacks and is characterized by a much higher accuracy and safety of measurements, because the working medium is light. The fastening head does not change. The measurement of the rope load may be based on the change of strain value or indirectly by means of measuring the deflection of the bolt fixing the rope holder. The proposed solution consists in placing the optical fiber with Bragg grating inside the bolt. It enables continuous measurements with a frequency of 2 kHz. A special test bench was built at the Research and Supervisory Centre of Underground Mining. Testing on guide ropes was carried out in a mining hoist in the Piast mine.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48544553","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: 11

Studies of Masonry Structure Technical Wear in Mining Areas 矿区砌体结构技术磨损研究

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2019.128680

I. BRYT-NITARSKA, Badania Zużycia Technicznego, Konstrukcji Murowanych, NA Terenach

{"title":"Studies of Masonry Structure Technical Wear in Mining Areas","authors":"I. BRYT-NITARSKA, Badania Zużycia Technicznego, Konstrukcji Murowanych, NA Terenach","doi":"10.24425/ams.2019.128680","DOIUrl":"https://doi.org/10.24425/ams.2019.128680","url":null,"abstract":"The paper presents the results of assessment studies of the time course for technical wear in masonry buildings located in the area of mining-induced ground deformations. By using fuzzy inference system (FIS) and the “if-then” rule, corresponding language labels describing actual damage recorded in structure components were translated into scalar outputs describing the degree of damage to the building. Adopting this approach made it possible to separate damage resulting from additional effects coming from mining-induced ground deformations and the natural wear and tear of masonry structure. By using statistical analysis an exponential function for the condition of building damage and the function of natural wear and tear were developed. Both phenomena were subject to studies as a function of time regarding the technical age of building structure. The results obtained were used to develop a model for the course of technical wear of traditionally constructed buildings used within mining areas. In the course of natural wear and tear buildings located in mining areas are additionally exposed to forced ground deformations. The increase of internal forces in structure components induced by those effects results in creating an additional stress factor and damage. The hairline cracks and cracks of building structure components take place when the intensity value of mining effects becomes higher than the component stress resistance and repeated effects result in the decrease of structure rigidity. The observations of building behaviour in mining areas show that the intensity of mining activity and the multiplicity of its effect play a substantial role in the course of technical wear of buildings. The studies show that the level of damage resulting from mining effects adds up to natural wear and tear of the building and impairs the global technical condition as compared to similar buildings used outside mining areas.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43062416","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: 0

Evaluation of Rockburst Potential in Kimberlite Using Fruit Fly Optimization Algorithm and Generalized Regression Neural Networks 利用果蝇优化算法和广义回归神经网络评价金伯利岩岩爆潜力

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/AMS.2019.128683

Yuanyuan Pu, D. Apel, Y. Pourrahimian, Jie-Chao Chen

{"title":"Evaluation of Rockburst Potential in Kimberlite Using Fruit Fly Optimization Algorithm and Generalized Regression Neural Networks","authors":"Yuanyuan Pu, D. Apel, Y. Pourrahimian, Jie-Chao Chen","doi":"10.24425/AMS.2019.128683","DOIUrl":"https://doi.org/10.24425/AMS.2019.128683","url":null,"abstract":"Rockburst is a common engineering geological hazard. In order to evaluate rockburst liability in kimberlite at an underground diamond mine, a method combining generalized regression neural networks (GRNN) and fruit fly optimization algorithm (FOA) is employed. Based on two fundamental premises of rockburst occurrence, depth, σθ, σc, σt, B1, B2, SCF, Wet are determined as indicators of rockburst, which are also input vectors of GRNN model. 132 groups of data obtained from rockburst cases from all over the world are chosen as training samples to train the GRNN model; FOA is used to seek the optimal parameter σ that generates the most accurate GRNN model. The trained GRNN model is adopted to evaluate burst liability in kimberlite pipes. The same eight rockburst indicators are acquired from lab tests, mine site and FEM model as test sample features. Evaluation results made by GRNN can be confirmed by a rockburst case at this mine. GRNN do not require any prior knowledge about the nature of the relationship between the input and output variables and avoid analyzing the mechanism of rockburst, which has a bright prospect for engineering rockburst potential evaluation.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46698005","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: 5

Impact of Geotechnical Barrier Modelled in the Vicinity of a Building Structures Located in Mining Area 矿区建筑构筑物附近岩土屏障的影响模拟

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/AMS.2018.124984

Rafał Misa, K. Tajduś, A. Sroka

{"title":"Impact of Geotechnical Barrier Modelled in the Vicinity of a Building Structures Located in Mining Area","authors":"Rafał Misa, K. Tajduś, A. Sroka","doi":"10.24425/AMS.2018.124984","DOIUrl":"https://doi.org/10.24425/AMS.2018.124984","url":null,"abstract":"The paper presents a new geotechnical solution indicating a possibility of effective building structures protection. The presented solutions enable minimization of negative effects of underground mining operations. Results of numerical modelling have been presented for an example of design of preventive ditches reducing the influence of mining operations on the ground surface. To minimize the mining damage or to reduce its reach it is reasonable to look for technical solutions, which would enable effective protection of building structures. So far authors concentrated primarily on the development of building structure protection methods to minimize the damage caused by the underground mining. The application of geotechnical methods, which could protect building structures against the mining damage, was not considered so far in scientific papers. It should be noticed that relatively few publications are directly related to those issues and there are no practical examples of effective geotechnical protection. This paper presents a geotechnical solution indicating a possibility of effective protection of building structures. The presented solutions enable minimization of negative effects of underground mining operations. Results of numerical modelling have been presented for an example of design of preventive ditches reducing the influence of mining operations on the ground surface. The calculations were carried out in the Abaqus software, based on the finite element method.","PeriodicalId":55468,"journal":{"name":"Archives of Mining Sciences","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45141935","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: 5

Case Study: Mechanism and Effect Analysis of Presplitting Blasting in Shallow Extra-Thick Coal Seam 实例研究:浅埋特厚煤层预裂爆破机理及效果分析

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2022.142406

Q. Sun, Cheng Shan, Zhongya Wu, Yunbo Wang

引用次数: 1

Assessment of the Behaviour of Flysch Rock Mass During Tunnel Boring in the Primary Lining Using Indicators and Limit Values of Displacements and Deformations 用位移变形指标和极限值评价复理岩体在隧道掘进过程中的行为

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2022.141463

A. Tajduś, K. Tajduś

引用次数: 1

Classification and Decision-Making of Fully Mechanised Mining Technology Pattern for Thin Seam 薄煤层综采技术模式分类与决策

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/ams.2021.138592

Chen Wang, Yu Zhang, Yong Liu, Chen-shu Jiang, Mingqing Zhang

引用次数: 0

Overburden Failure and Ground Pressure Behaviour of Longwall Top Coal Caving in Hard Multi-Layered Roof 坚硬多层顶板长壁综放工作面覆岩破坏与地压特性

IF 1.2 4区工程技术

Archives of Mining Sciences Pub Date : 2023-07-20 DOI: 10.24425/AMS.2019.129370

Zhijie Zhu, Yunlong Wu, J. Han, Ying Chen

引用次数: 1