Stress redistribution in deep open pit mine Zhelezny at Kovdor iron ore deposit

Kozyrev, A. A.; Semenova, I. E.; Rybin, V. V.; Avetisyan, I. M.

doi:10.1134/s1062739115040015

Cited by 8 publications

(13 citation statements)

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“…The importance of gathering geomechanical data to aid in the mine design and planning process including the assessment of pit wall slope stability is acknowledged by many researchers (e.g. Kozyrev et al, 2015). As shown in Figure 1, there is clear relationship between lab-based porosity and ultra-sonic velocity measurements and Uniaxial Compressive Strength (UCS); many researchers (e.g.…”

Section: Introductionmentioning

confidence: 99%

The application of VSP in the Pilbara

Grant

Dean

Rossiter³

et al. 2018

ASEG Extended Abstracts

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The construction of geological and geotechnical models in typical Pilbara iron ore environments is vital to enable an optimized mine design for the life of the asset, while maintaining pit wall integrity and overall mine safety. Geotechnical assessments require the measurement of geomechanical properties, such as the triaxial shear, direct shear and unconfined compressive strength tests and pressure and shear wave velocities on diamond core samples. Ideally, these velocities would be measured in Reverse Circulation (RC) boreholes as their spatial density is far higher than diamond drilled holes. Unfortunately, despite its value, such data is seldom collected as a large proportion of the holes are above the water table, limiting the use of sonic-logging tools. Even if measurements are possible, damage to the borehole caused by drilling biases the resulting velocity measurements. This paper details the results of a trial using the vertical seismic profile method to directly measure in-situ seismic velocities in RC boreholes. The method was successful in determining the velocities of the formations through the entire length of the holes. The data in several boreholes was of sufficient quality for the application of more advanced processing methods, important for geological mapping and the processing and interpretation of surface seismic data.The success of this first trial has implications for future iron-ore developments in the Pilbara. The widespread acquisition of accurate seismic velocity data is likely to enable the creation of more accurate geotechnical models and could improve future development decisions.

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Section: Introductionmentioning

confidence: 99%

The application of VSP in the Pilbara

Grant

Dean

Rossiter³

et al. 2018

ASEG Extended Abstracts

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“…Currently, at mining enterprises of Kuzbass an urgent task is to study the spatial and temporal redistribution of stresses of the earth's crust, caused by the combined effect of natural and technogenic geodynamic processes [1,2,3]. Control of the stressed state of a block rock massif for geomechanical support of open, underground and construction geotechnology for subsoil development is proposed to be carried out by the authors on the basis of the applied geodynamic analysis method (AGAM), which is based on the solution of fundamental and applied problems of geodynamics.…”

Section: Introductionmentioning

confidence: 99%

“…The unified theory of a block rock massif is the result of analysis and generalization of the results of studies of related Earth sciences. The basis for its development was the scientific works of the following scientists: Sherman, John Schubert and many others [1,4,5,6,7,8,9]. One of the main parts of this theory is the theory of motion of blocks of the earth's crust of different ranks, which is poorly highlighted in the open press and the deformation model, taking into account the hierarchy, is not developed.…”

Section: Introductionmentioning

confidence: 99%

The Theory of Control of Stressed States of a Block Rock Massif with Regard to the Hierarchy of its Movements

Solovitskiy¹,

Pershin²

2018

Proceedings of the 9th China-Russia Symposium “Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protecti

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It is established that taking into account the development of geodynamic and technogenic processes in the development of the Kuzbass subsoil is an actual and multifaceted problem. Its solution is impossible without the creation of new models of deformations of blocks of the earth's crust. These processes are related to the kinematics of these processes. Flat models of the earth's crust are used to collect information about them, which do not provide adequate blocks of the earth's crust. A comprehensive approach based on the integration of Earth Sciences has been applied to implement new models of deformation of the earth's crust blocks. The theory of movements of blocks of the earth's crust of different ranks is developed, taking into account the hierarchy of the strained-deformed state of the earth's crust of Kuzbass for conducting its control. The practical use of the developed theory ensures the development of new methods of geomechanics and the expansion of information on the development of geodynamic and technogenic processes in the development of the Kuzbass subsoil.

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“…Traditional technologies of mineral resources development are focused on studying their geomechanical conditions by improving the information on the intense-strained state of the rock mass [1][2][3]. Therefore, in practice the dominating development is gained by geophysical and surveying methods.…”

Section: Introductionmentioning

confidence: 99%

New Opportunities to Expand Information on Intense-Strained State of the Earth's Crust in the Areas of Development Mineral Resources During Monitoring Creation

Pershin

Solovitskiy

2017

E3S Web Conf.

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Abstract. It is established that new safe and pollution-free technologies of development of Kuzbass coal deposits should be based on new knowledge of development geodynamic and technogenic processes in exploration of mineral resources. Such information is impossible without formation of new models of deformations of the earth crust blocks. Now in traditional technologies of geomechanical ensuring development of mineral resources the main characteristic is the information about the kinematics of these processes. A comprehensive approach which beginning is development of the theory for justification of scale of the explored territory and establishment of uniform integral parameters of a strained state of blocks of crust. Justification of scale of the explored territory defines effectiveness of expenses. Establishment of uniform integral parameters of a strained state of crustal blocks characterizes the new level of information exchange between sciences about Earth and geomechanics. Practical use of the specified theory consists of assessment of geodynamic danger at development of coal fields.

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Stress redistribution in deep open pit mine Zhelezny at Kovdor iron ore deposit

Cited by 8 publications

References 1 publication

The application of VSP in the Pilbara

The application of VSP in the Pilbara

The Theory of Control of Stressed States of a Block Rock Massif with Regard to the Hierarchy of its Movements

New Opportunities to Expand Information on Intense-Strained State of the Earth's Crust in the Areas of Development Mineral Resources During Monitoring Creation

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