Proceedings of the First International Conference on Mining Geomechanical Risk最新文献_第4页

A practical safety risk model for monitoring program design 一个实用的安全风险模型，用于监测方案的设计

Proceedings of the First International Conference on Mining Geomechanical Risk Pub Date : 2019-04-09 DOI: 10.36487/ACG_REP/1905_09_VENTER

J. Venter, E. Hamman

引用次数: 0

Key considerations when developing a risk management framework for tailings facilities 制定尾矿设施风险管理框架时的关键考虑因素

Proceedings of the First International Conference on Mining Geomechanical Risk Pub Date : 2019-04-09 DOI: 10.36487/ACG_REP/1905_16_GAGNON

Ag Gagnon

引用次数: 1

Economic significance of geotechnical uncertainties in open pit mines 露天矿岩土不确定性的经济意义

Proceedings of the First International Conference on Mining Geomechanical Risk Pub Date : 2019-04-09 DOI: 10.36487/ACG_REP/1905_04_JELE

R. Jele, M. Dunn

{"title":"Economic significance of geotechnical uncertainties in open pit mines","authors":"R. Jele, M. Dunn","doi":"10.36487/ACG_REP/1905_04_JELE","DOIUrl":"https://doi.org/10.36487/ACG_REP/1905_04_JELE","url":null,"abstract":"The major cost associated with open pit mine operations is waste stripping. While the steepening of slope angles reduces the stripping ratio, and hence operational costs, it also increases the likelihood of failure. Major slope failures incur significant cost elements including clean-up, disruption to mine operation, and damage to mining equipment and in some cases loss of reserves. Geotechnical engineers are often faced with the difficult task of finding the balance between slope optimisation and acceptable risk related to the likelihood of large slope failures. Technological advancements have allowed for the development of larger and deeper open pit operations, but have also created higher economic impact from potential slope failures. Given that the aim of mining operators is to maximise overall profits, it is surprising that most slope designs are based on deterministic design approaches, and limited attention is given to quantifying uncertainties in the geotechnical model. As most major decisions in the mining industry are made by senior management staff and financial staff, any attempt on linking slope stability analysis results with monetary values would improve the critical communication between geotechnical designers and decision-makers. \u0000Using Cowal Gold Mine as a case study, this paper illustrates economic risk caused by geotechnical uncertainties. The geotechnical risk estimate is generally subjective due to geotechnical engineers having to rely on limited data and engineering judgement. Geotechnical risk is compared against economic factors that are often perceived as important variables in mining operations.","PeriodicalId":337751,"journal":{"name":"Proceedings of the First International Conference on Mining Geomechanical Risk","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122213295","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

Production-associated risk factors of seismicity in the Kiirunavaara mine Kiirunavaara矿地震活动的生产相关风险因素

Proceedings of the First International Conference on Mining Geomechanical Risk Pub Date : 2019-04-09 DOI: 10.36487/ACG_REP/1905_14_VATCHER

J. Vatcher, M. Bosković, J. Sjöberg

{"title":"Production-associated risk factors of seismicity in the Kiirunavaara mine","authors":"J. Vatcher, M. Bosković, J. Sjöberg","doi":"10.36487/ACG_REP/1905_14_VATCHER","DOIUrl":"https://doi.org/10.36487/ACG_REP/1905_14_VATCHER","url":null,"abstract":"When it comes to deep mining, the geomechanical risks of production planning decisions are amplified due to the high-loading environment and typical deep rock mass behaviour such as seismic activity, ground falls, spalling, strainbursting, and rockbursting. Assessing how production decisions influence hazards is an important aspect of risk assessment. A preliminary analysis of the historic production at the \u0000Luossavaara-Kiirunavaara Aktiebolag (LKAB) Kiirunavaara mine indicated a significant likelihood of ore/host rock remnants after production blasting in some volumes of the mine. These remnants are caused by a combination of drill fan geometry, orebody geometry, safety regulations minimising the likelihood for drill breakthrough, and typical limitations of blasting practices. Numerical stress analysis modelling was used for a selected volume of the mine critical to production to evaluate the effect of possible geometric realisations of the production remnants. A qualitative risk assessment of the production remnants was completed, with focus on results that indicated seismically active volumes. The understanding gained from this work is important to the mine’s future production planning, as it gives insight into factors that increase the risk of seismicity.","PeriodicalId":337751,"journal":{"name":"Proceedings of the First International Conference on Mining Geomechanical Risk","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127585645","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