Scientific Mining Journal最新文献

Evaluating machine utilization times for roadheaders used in coal mines: Regression and artificial neural network analyses 煤矿掘进机机器使用时间评价:回归与人工神经网络分析

Scientific Mining Journal Pub Date : 2023-10-17 DOI: 10.30797/madencilik.1310876

Sair KAHRAMAN, Masoud ROSTAMİ, Behnaz DİBAVAR

引用次数: 0

Dust Pollution Characteristics and Control Measures of Open Pit Coal Mine 露天煤矿粉尘污染特点及控制措施

Scientific Mining Journal Pub Date : 2023-10-16 DOI: 10.30797/madencilik.1149989

Leng WU, Ziling SONG

引用次数: 0

Utilization of wastes/by-products as a grinding additive 废物/副产品作为研磨添加剂的利用

Scientific Mining Journal Pub Date : 2023-10-11 DOI: 10.30797/madencilik.1342929

Serkan ÇAYIRLI, Hasan Serkan GÖKÇEN, Nuri YÜCE, Obaidullah ELCHİ

引用次数: 0

Enhancing the bearing capacity of friction anchor bolts through cementitious concrete injection for reinforced support in underground mine 地下矿山注浆加固支护提高摩擦锚杆承载力

Scientific Mining Journal Pub Date : 2023-10-09 DOI: 10.30797/madencilik.1312485

Soufı AMINE

{"title":"Enhancing the bearing capacity of friction anchor bolts through cementitious concrete injection for reinforced support in underground mine","authors":"Soufı AMINE","doi":"10.30797/madencilik.1312485","DOIUrl":"https://doi.org/10.30797/madencilik.1312485","url":null,"abstract":"Friction anchor bolts are commonly used for providing support in underground structures by relying on frictional forces between the bolt and the surrounding rock. This study proposes a method to enhance the efficiency of these bolts by injecting a cement-based mixture comprising cement, sand, and additives. The injection of this mixture into the bolt results in internal expansion, which reinforces the friction and bearing capacity of the bolt. The increased volume exerts a radial force, leading to improved adherence, load transfer, and void filling. Pullout tests were conducted on various rock masses to evaluate the performance of the anchor bolts. The results demonstrate increased pullout resistance with higher rock mass quality and longer cemented bolts. Additionally, the use of a silicate-based additive accelerated the curing time of the cement, enhancing the strength of the bolts. The study also highlights the significant influence of groundwater on the bearing capacity of the bolts. These findings indicate the effectiveness of cemented concrete injection in strengthening friction anchor bolts and their anchorage in underground structures.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135149076","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

Estimating support pressure with finite element and convergence-confinement method for different rock masses 用有限元法和收敛约束法估算不同岩体的支护压力

Scientific Mining Journal Pub Date : 2023-10-03 DOI: 10.30797/madencilik.1356042

Hüseyin Onur DÖNMEZ, Hakan TUNÇDEMİR

引用次数: 0

Comparison of Conditioned Radial Bases Function Approach and Kriging: Estimation of Calorific Value in a Coal Field 条件径向基函数法与克里格法的比较——煤田发热量的估算

Scientific Mining Journal Pub Date : 2023-07-31 DOI: 10.30797/madencilik.1315628

Fırat Atalay

引用次数: 0

Study on floor instability law of cemented filling mining above a confined aquifer 承压含水层上方胶结充填开采底板失稳规律研究

Scientific Mining Journal Pub Date : 2023-07-25 DOI: 10.30797/madencilik.1077583

Jiaqi Wang

{"title":"Study on floor instability law of cemented filling mining above a confined aquifer","authors":"Jiaqi Wang","doi":"10.30797/madencilik.1077583","DOIUrl":"https://doi.org/10.30797/madencilik.1077583","url":null,"abstract":"To solve the problem of floor water inrush in the process of coal mining on a confined aquifer and study the law of floor instability, a cemented filling mining method is proposed in the paper. Using river sand and cement as filling materials, the cementitious material with a concentration of 75% and cement content of 15% has the best flow and mechanical properties. Based on the elastic half-space theory and the bearing characteristics of the backfill, the mechanical model of floor stability is established, the critical criterion of floor instability is proposed, and the relationship between the failure depth of floor and the location and pressure of confined aquifer is obtained. The numerical simulation test scheme is designed, and the FLAC3D fluid-structure coupling element is used to explore the instability characteristics of the floor in the mining process. The research results show that the failure depth of the floor will gradually decrease with the increase of the strength of filling materials, the increase of aquifer distance, and the decrease of water pressure. The research results provide a useful reference for the study of safe mining of coal resources on a confined aquifer.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46942942","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

Study on Multi-factor Optimization of Adjacent Underground Layered Salt Rock Gas Storage Based on RSM 基于RSM的相邻地下层状盐岩储气库多因素优化研究

Scientific Mining Journal Pub Date : 2023-07-24 DOI: 10.30797/madencilik.1206610

Jinyi Ji̇, Baokun Zhou, Zhichen Tao, Xiaoqing Chen

{"title":"Study on Multi-factor Optimization of Adjacent Underground Layered Salt Rock Gas Storage Based on RSM","authors":"Jinyi Ji̇, Baokun Zhou, Zhichen Tao, Xiaoqing Chen","doi":"10.30797/madencilik.1206610","DOIUrl":"https://doi.org/10.30797/madencilik.1206610","url":null,"abstract":"To study the significance of different factors on adjacent underground laminated salt rock storage, 15 groups of simulation tests are designed by using the response surface methodology (RSM), the quadratic response surface model with the midpoint displacement and medial waist stress of the interlayer as the response values is constructed. By analyzing the main effect and interaction of the regression model, the influence of the interaction between pillar width, interlayer thickness, and the location of a single interlayer on the midpoint displacement of the interlayer and the internal waist stress of the adjacent ellipsoidal cavity is studied. The results show that the interlayer thickness is the main effect factor of the midpoint displacement of the interlayer. And the pillar width is the main effect factor of the medial waist stress. When the adjacent storage is designed with as 2.5D pillar width, 2 m interlayer thickness, and the midpoint of the interlayer is located at 0.3H above the cavity, the displacement and stress of the test model are relatively small. The above conclusions can provide a certain reference value for the mechanical analysis of adjacent underground layered salt rock gas storage.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45820319","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

Analysis of Bottleneck using Mine Production Index and Ishikawa Diagram: A case of Indian Coal Mine 用矿山生产指数和石川图分析瓶颈——以印度煤矿为例

Scientific Mining Journal Pub Date : 2023-07-18 DOI: 10.30797/madencilik.1160266

Sorokhaıbam Khaba

{"title":"Analysis of Bottleneck using Mine Production Index and Ishikawa Diagram: A case of Indian Coal Mine","authors":"Sorokhaıbam Khaba","doi":"10.30797/madencilik.1160266","DOIUrl":"https://doi.org/10.30797/madencilik.1160266","url":null,"abstract":"The traditional way of coal production and management is still predominant in the Indian coal mining industry which has led to a widespread waste of resources both materials and humans. Operational loss of the mining machinery and equipment is one of the key factors for the low performance and productivity of mines. This research presents an application of the integrated approach of the Mine Production Index and Ishikawa Diagram in an Indian coal mine to study the bottleneck equipment in the mining operation among the fleet of the shovel, dumper, and dozer. Mine Production Index (MPI) identifies the bottleneck equipment in the mining operation, and Ishikawa Diagram presents the Root Cause Analysis of bottleneck equipment. The fuzzy Analytic Hierarchy Process (FAHP) is used to determine weights for MPI calculation using information gathered from a group of 11 experts through Structured interviews. The study found that the dozer fleet is the bottleneck equipment and the ineffectiveness of the dozer fleet can be grouped into 4 categories as enumerated on the Ishikawa diagram. The study proposes that the ineffectiveness of the dozer fleet can be improved with an increase in its performance rate. The study is based on the judgments of the experts for the case mine, which may limit the external validity. This paper is an original contribution to the analysis of mining equipment using the Mine Production Index and Ishikawa Diagram in an Indian coal mine.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43553831","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

Using glycerin, a by-product of biodiesel, as a grinding aid in the dry grinding of marble dust waste 利用生物柴油的副产品甘油作为大理石粉尘废料干磨的助磨剂

Scientific Mining Journal Pub Date : 2023-06-07 DOI: 10.30797/madencilik.1196039

Diler KATIRCIOĞLU BAYEL

{"title":"Using glycerin, a by-product of biodiesel, as a grinding aid in the dry grinding of marble dust waste","authors":"Diler KATIRCIOĞLU BAYEL","doi":"10.30797/madencilik.1196039","DOIUrl":"https://doi.org/10.30797/madencilik.1196039","url":null,"abstract":"Glycerin represents the primary by-product of biodiesel generation when vegetable oil is transesterified with ethanol or methanol. Nowadays, the need to turn to alternative materials is increasing due to the competition arising from developing technology and industry and the rapid consumption of Earth’s resources. It is essential to study how to prevent the depletion of natural resources and transform wastes into usable and valuable products. The use of waste glycerin (WG) as a grinding aid can constitute an alternative solution in terms of utilizing the excess glycerin resulting from biodiesel production. This paper investigated the usability of WG as a grinding aid in terms of grinding efficiency while planning to decrease the adverse impacts of waste on the environment via its efficient utilization. The dry grinding experiments conducted within the study’s scope researched the impacts of five biodiesel dosages (0%, 0.25%, 0.5%, 1%, and 2% by weight) on the product. The current research is promising in terms of preventing the depletion of natural resources and transforming waste into usable and valuable products. Furthermore, considerable enhancements were obtained in the grinding performance with the grinding aid utilized.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43532494","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