{"title":"Prediction of Rock Fragmentation in Bench Blasting Operations Based on Multi Parameters—A Case Study","authors":"Y. Majeed, M. Z. Emad, M. Z. Abu Bakar, Ayatullah","doi":"10.1134/s1062739124010095","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This study discusses the dependence of blast fragmentation size on field parameters and rock properties. For this purpose six limestone quarries of productive cement factories of Pakistan were selected including a total of 19 working bench faces. The field work included determination of rock fragmentation size, field penetration rate, rock mass parameters and blast design parameters. The geo-mechanical laboratory testing program includes LCPC rock abrasivity tests, NTNU/SINTEF drillability tests along with determination of laboratory drilling rate index and physico-mechanical rock property tests. The technique of least square regression was adopted to explain the obtained dependence. Finally, three multiple regression models were proposed for the estimation of rock fragmentation size from the test field and laboratory scale parameters. The quality of developed multivariable models was statistically validated through statistical performance indicators.</p>","PeriodicalId":16358,"journal":{"name":"Journal of Mining Science","volume":"25 1","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Mining Science","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1134/s1062739124010095","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MINING & MINERAL PROCESSING","Score":null,"Total":0}
引用次数: 0
Abstract
This study discusses the dependence of blast fragmentation size on field parameters and rock properties. For this purpose six limestone quarries of productive cement factories of Pakistan were selected including a total of 19 working bench faces. The field work included determination of rock fragmentation size, field penetration rate, rock mass parameters and blast design parameters. The geo-mechanical laboratory testing program includes LCPC rock abrasivity tests, NTNU/SINTEF drillability tests along with determination of laboratory drilling rate index and physico-mechanical rock property tests. The technique of least square regression was adopted to explain the obtained dependence. Finally, three multiple regression models were proposed for the estimation of rock fragmentation size from the test field and laboratory scale parameters. The quality of developed multivariable models was statistically validated through statistical performance indicators.
期刊介绍：
The Journal reflects the current trends of development in fundamental and applied mining sciences. It publishes original articles on geomechanics and geoinformation science, investigation of relationships between global geodynamic processes and man-induced disasters, physical and mathematical modeling of rheological and wave processes in multiphase structural geological media, rock failure, analysis and synthesis of mechanisms, automatic machines, and robots, science of mining machines, creation of resource-saving and ecologically safe technologies of mineral mining, mine aerology and mine thermal physics, coal seam degassing, mechanisms for origination of spontaneous fires and methods for their extinction, mineral dressing, and bowel exploitation.
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