Settlement instrumentation to observe open-pit mine backfill and a prototype foundation in western Canada

1987 ◽  
Vol 24 (4) ◽  
pp. 663-669
Author(s):  
S. Thomson ◽  
R. Sonnenberg
Keyword(s):  
Key Words ◽  
Mining Operation ◽  
Shallow Foundations ◽  
Open Pit ◽  
Open Pit Mining ◽  
Western Canada ◽  
Mining Operations ◽  
Reclaimed Land ◽  
Mine Backfill ◽  
The Public

Reclaimed land from open-pit mining operations must have essentially completed settling under self-weight and must be capable of supporting light structures before it can be returned to the public domain. The settlement of the spoil from one open-pit mining operation west of Edmonton, Alberta, was monitored by a series of magnetic extensometers installed in boreholes. Time–settlement plots indicated that self-weight settlement occurs within a 3–5 year period.Tests of individual small footings pointed out the necessity of placing shallow foundations on beneficiated soil. The results of a second series of small footings led to the founding of an 8 × 10 m prototype instrumented, reinforced foundation on a 1 m thick soil–flyash mat. Observations to date indicate an entirely acceptable settlement pattern. Key words: settlement, spoil, reclaimed land, prototype foundation, instrumentation.

scholarly journals Investigation of Geotechnical Parameters Effect on Open Pit Mining Operation Cost (Case Study: Angouran Mine)

2016 ◽  
Vol 61 (1) ◽  
pp. 169-182
Author(s):  
Hamidreza Taherkhani ◽  
Ramin Doostmohammadi
Keyword(s):  
Mining Operation ◽  
Geotechnical Properties ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Geotechnical Parameters ◽  
Total Cost ◽  
Lead And Zinc ◽  
Zinc Mine ◽  
Operation Cost

Abstract Properties of intact rock and discontinuities structures are the most important variables affecting mining operations. A comprehensive review of research concerning the direct effect of geotechnical parameters on changes of total exploitation cost in open-pit mines are not provided since now. In this paper, the influence of geotechnical properties of rock mass on total cost of mining operations in Angouran (the largest lead and zinc mine in Middle East located at south western province of Zanjan, Iran) is examined. At first, the classified components of slope mass rating (SMR) and then all exploitation costs (total costs of drilling operation, blasting, bulldozers work, loading and hauling) in mining blocks are surveyed. Then, an equation for determining the correlation between geotechnical properties and total cost using multivariate linear regression is proposed. Eventually, conducting sensitivity analysis revealed that the variation of joints dip is the most effective parameter in change of mining operation cost.

scholarly journals Analysis of Environmental Costs’ Effect in Green Mining Strategy Using a System Dynamics Approach: A Case Study

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Amir Jafarpour ◽  
Siamak Khatami
Keyword(s):  
System Dynamics ◽  
Large Scale ◽  
Mining Operation ◽  
Open Pit ◽  
Open Pit Mining ◽  
Processing Plant ◽  
Environmental Costs ◽  
Mining Operations ◽  
Factors Affecting

Nowadays, one of the most significant problems in mining activities is the significance of analyzing environmental issues along with mining, concentration, and mineral processing operations to achieve the goals of sustainable development. Nevertheless, mine owners refuse to include environmental costs (EC) and consider them unprofitable. Due to the ever-increasing importance of environmental and social topics in recent years, there is a vital need for assessing the EC and its impact on total mining costs and implementing green strategies by the mining managers and engineers. The current study tries to model the mining cost structure by considering the causal relationships between different factors affecting open-pit mining costs to highlight the EC’s role. Furthermore, this research evaluates the effectiveness of implementing each possible mining green strategy in a large-scale copper mine using the System Dynamics (SD) approach. In this regard, seven scenarios and a combination of different environmental strategies, including mine reclamation, an environmental strategy for a condensation and processing plant, and environmental mining operations, have been considered for the SD-based economic analysis. The simultaneous use of the green mining strategies for the concentration and processing plant (Scenario 4) shows a high impact on cost reduction in the mining operation.

Guidelines for Slope Performance Monitoring

2020 ◽  
Keyword(s):  
Monitoring System ◽  
Performance Monitoring ◽  
Mining Operation ◽  
Open Pit ◽  
Open Pit Mining ◽  
System Management ◽  
Mining Operations ◽  
Industry Practice ◽  
Slope Monitoring ◽  
Acquisition Management

Although most mining companies utilise systems for slope monitoring, experience indicates that mining operations continue to be surprised by the occurrence of adverse geotechnical events. A comprehensive and robust performance monitoring system is an essential component of slope management in an open pit mining operation. The development of such a system requires considerable expertise to ensure the monitoring system is effective and reliable. Written by instrumentation experts and geotechnical practitioners, Guidelines for Slope Performance Monitoring is an initiative of the Large Open Pit (LOP) Project and the fifth book in the Guidelines for Open Pit Slope Design series. Its 10 chapters present the process of establishing and operating a slope monitoring system; the fundamentals of pit slope monitoring instrumentation and methods; monitoring system operation; data acquisition, management and analysis; and utilising and communicating monitoring results. The implications of increased automation of mining operations are also discussed, including the future requirements of performance monitoring. Guidelines for Slope Performance Monitoring summarises leading mine industry practice in monitoring system design, implementation, system management, data management and reporting, and provides guidance for engineers, geologists, technicians and others responsible for geotechnical risk management.

Performance of a highwall in soft rock, Highvale mine, Alberta

1992 ◽  
Vol 29 (3) ◽  
pp. 353-363 ◽  
Author(s):  
C. A. Small ◽  
N. R. Morgenstern
Keyword(s):  
Key Words ◽  
Upper Cretaceous ◽  
Sedimentary Rocks ◽  
Soft Rock ◽  
Mining Operation ◽  
Open Pit ◽  
Strip Mining ◽  
Coal Deposit ◽  
Mining Operations ◽  
Pressure Regime

The Highvale mine, west of Edmonton, Alta., is a strip-mining operation with Upper Cretaceous soft sandstone and mudstone overlying the coal deposit. Highwalls cut in the soft rock experienced numerous failures from 1983 to 1985 that disrupted stripping and mining operations and posed a threat to safety. The performance of a 20–23 m highwall at Highvale was studied in 1987 and 1988 to gain insight to the mechanisms of failure. The study utilized surveying, slope indicators, and piezometers to determine the deformation and seepage pattern behind the highwall as it rebounded into the pit upon excavation. Translational movements were found to extend over 250 m behind the highwall along weak, probably presheared bentonitic mudstones. The sandstone and mudstone overburden was observed to extend toward the open pit. This affected the pore-pressure regime and led to a reduction in the mass strength of the sandstone and mudstone. The findings of this study contributed to a better understanding of the mechanisms of highwall failure in soft sedimentary rocks. Key words : highwall, deformations, failure, seepage, loosening, softening.

scholarly journals Models of simulation in the making of decisions in the mining operation

2019 ◽  
pp. 20-26
Author(s):  
Erika Castillo-Serrano ◽  
Myrna Urith Pérez-Lugo ◽  
Roberto Avelino-Rosas ◽  
Denisse Gabriela Rivera-Mojica
Keyword(s):  
Decision Making ◽  
Operating Cost ◽  
Simulation Models ◽  
Mining Operation ◽  
Open Pit ◽  
Open Pit Mining ◽  
Discrete Events ◽  
Mining Operations ◽  
Open Pit Mines ◽  
Simulation Techniques

In open pit mining, the loading, unloading and hauling system can represent a high percentage of the operating cost. The objective of this document is to provide an overview of the different approaches in the application of simulation models as an alternative applied to open pit mining operations that can help in decision making to optimize resources. It talks about the different types of simulation models that can be applied in mining operations such as stochastic, deterministic and discrete events. The underlying idea of this text is to highlight that with the increase in competitiveness, mining companies are in need of using simulation techniques to reduce costs, time and risks when making decisions, since simulation allows the creation of scenarios that approximate reality. In the end, the document concludes that simulation models are a tool to help in decision-making, for the optimization of resources, increased improvement and efficiency of the processes of loading, transport and unloading in open pit mines.

Reliability-based performance analysis of mining drilling operations through Markov chain Monte Carlo and mean reverting process simulations

SIMULATION ◽  
2020 ◽  
Vol 96 (7) ◽  
pp. 593-604 ◽  
Author(s):  
Omer Faruk Ugurlu ◽  
Mustafa Kumral
Keyword(s):  
Monte Carlo ◽  
Markov Chain ◽  
Markov Chain Monte Carlo ◽  
Production Scheduling ◽  
Commodity Prices ◽  
Mining Operation ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Rotary Drilling

In recent years, commodity prices have swiftly decreased, narrowing the profit margin for many mining operations and forcing them to find effective cost management strategies to respond to low prices. Given that equipment is one of the most significant assets of a mining company, efficient equipment utilization has strong potential to reduce costs. This paper focuses on the relationship between the number of available drilling machines based on reliability analysis and the number of holes to be created on a bench of an open pit mining operation. Since equipment availability is random in nature, a range of holes to be drilled corresponding to a specified probability level was determined. To assess the performance of the proposed approach, a case study was carried out using two stochastic modeling techniques. Evolutions of reliabilities of 10 rotary drilling machines over a specific time were simulated by Markov chain Monte Carlo and mean reverting processes, using historical data. Multiple simulations were then used for risk quantification. Results show that the proposed approach can be used as a tool to assist production scheduling and assess the associated risk.

Current state and perspectives in automation of the open pit mining operations

2019 ◽  
Vol 8 (30) ◽  
pp. 115-123
Author(s):  
A.A. Sobolev ◽  
◽  
G.V. Sekisov ◽  
A.Yu. Cheban ◽  
N.M. Litvinova ◽  
...  
Keyword(s):  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Current State

scholarly journals On the Measures to Solve Environmental Problems of the Territory with Intensive Open Pit Coal Mining

2019 ◽  
Vol 105 ◽  
pp. 02006
Author(s):  
Tatiana Gvozdkova ◽  
Pawel Stefanek ◽  
Michaela Koščová
Keyword(s):  
Soil Cover ◽  
Mineral Resources ◽  
Radioactive Isotopes ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Coal Deposits ◽  
Disturbed Land ◽  
Ecological Problems ◽  
Suitable Form

Ecological problems in the open pit mining of coal deposits are extremely hard, since mining operations are accompanied by disturbed land to a large depth with significant changes in the landscape, hydrometeorological conditions, mixing of rocks and removal of infertile or even harmful rocks with radioactive isotopes to the surface. Disturbed lands are unusable if they are not repaired. All man-made disturbances of the environment caused by open pit mining are divided into landscape (changes in terrain, vegetation and soil cover) and environmental (violation of living conditions within the allotment and adjacent lands: changes in water regime, pollution of the soil, air and water basins) onesOne of the most important areas in the field of environmental protection is the reclamation (restoration) of the earth’s surface. In accordance with the requirements of the protection of the subsoil, enterprises engaged in the development of mineral deposits are obliged at their own expense to bring disturbed lands into a state suitable form for their further use. Reclamation of ought to be carried out during open pit mining operations and must be completed after mining of mineral resources in the terms established by the authorities that provide land for use.

scholarly journals A GIS Software Module for Environmental Impact Assessment of the Open Pit Mining Projects for Small Mining Operators in Kazakhstan

2021 ◽  
Vol 13 (12) ◽  
pp. 6971
Author(s):  
Mikhail Zarubin ◽  
Larissa Statsenko ◽  
Pavel Spiridonov ◽  
Venera Zarubina ◽  
Noune Melkoumian ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Mining Industry ◽  
Open Pit ◽  
Open Pit Mining ◽  
Software Module ◽  
Mining Operations ◽  
Open Pit Mines ◽  
Gis Software

This research article presents a software module for the environmental impact assessment (EIA) of open pit mines. The EIA software module has been developed based on the comprehensive examination of both country-specific (namely, Kazakhstan) and current international regulatory frameworks, legislation and EIA methodologies. EIA frameworks and methods have been critically evaluated, and mathematical models have been developed and implemented in the GIS software module ‘3D Quarry’. The proposed methodology and software module allows for optimised EIA calculations of open pit mines, aiming to minimise the negative impacts on the environment. The study presents an original methodology laid out as a basis for a software module for environmental impact assessment on atmosphere, water basins, soil and subsoil, tailored to the context of mining operations in Kazakhstan. The proposed software module offers an alternative to commercial off-the-shelf software packages currently used in the mining industry and is suitable for small mining operators in post-Soviet countries. It is anticipated that applications of the proposed software module will enable the transition to sustainable development in the Kazakh mining industry.

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