Open Pit Mining Technology of Steeply Dipping Mineral Occurences by Steeply Inclined Sublayers

Dryzhenko, Anatoly

doi:10.5593/sgem2017/13/s03.076

Cited by 29 publications

(16 citation statements)

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“…The study of the tuff-stone granular composition, mined by the method of downhole hydraulic mining, testifies that it has different characteristics depending on the weakening and significantly differs from that mined in a quarry [52]. Fig.…”

Section: Resultsmentioning

confidence: 95%

Modelling hydraulic mixture movement along the extraction chamber bottom in case of hydraulic washout of the tuff-stone

et al. 2020

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This paper presents the research results of the pulp movement process along the extraction chamber bottom to the suction pipe of the pulp lifting device in case of downhole hydraulic mining the volcanic tuff-stone. The washout process and hydraulically operated transportation of the tuff-stone hydraulic mixture, when forming the extraction chamber, have been studied under various conditions and methods of exposure. As a result, the dominant parameters have been determined influencing the hydrodynamic washout technology as well as tuff-stone hydraulic mixture lifting to the alluviation map. The dependences have been substantiated of the washout process performance and transportation capacity of the hydraulic mixture flow on the determined parameters. To calculate the process of pulp flow-over along the extraction chamber bottom to the intaking hydraulic elevator headwall, the systems of equations have been determined based on the modelling the movement of tuff-stone hydraulic mixture along the extraction chamber bottom during hydraulic washout. The dependences of the contact strength of the tuff-stone samples mined by downhole method on the time spent in water are presented, resulting in determination of the tuff-stone weakening coefficient and the degree of its saturation with water.

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Section: Resultsmentioning

confidence: 95%

Modelling hydraulic mixture movement along the extraction chamber bottom in case of hydraulic washout of the tuff-stone

et al. 2020

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“…The specialized literature [37,[40][41][42][43][44] pays attention to the application of joint technological plants which means the usage of different renewable. Traditional energy sources with the consideration of the environmental management are fully described in the references [45][46][47]. This paper means the possibility of introduction the innovative technological issue of gas hydrates transforming with zero energy using.…”

Section: Development Of Joint Technologies For the Geoenergy Usage Based On Gas Hydrates Transformationmentioning

confidence: 99%

Gas hydrates technologies in the joint concept of geoenergy usage

et al. 2021

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The paper represents the analysis, which has helped to establish the usage of gas hydrate technologies in the methane conversion. This gas could be obtained in different ways. Possibilities and sources for the gas obtaining have been demonstrated. Use of other environmentally friendly sources to support operation in such systems in terms of joint energy complex has been considered. The necessary kinetic connections to provide operational sustainability of all the constituents have been given. The approach helps evaluate quantitatively the priority of its physicochemical transformations to obtain gas hydrates artificially. It is possible to transport methane at considerable distances when it is solidified. Actually, in this case there is no necessity to build costly compressor stations and pipelines for its transportation to consumers. The approach is extremely important for mining regions as it helps prolong the operating period and working out of the abandoned and off-balance coal reserves. In this case, it is proposed to apply special gasification technologies tending to maximum methane recovery. The proposed solutions give the possibility to define the trends of our further research. They will be highlighted in the following authors’ studies.

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“…Equations (11) and (12) are put into (9). Then we get the following equation: In general case, equation of cone corresponding to phase is written as: Area of a transverse section of the cone is an ellipse (Fig.…”

Section: Characteristics Of Oval Shaped Mineral Occurrence By Overburdenmentioning

confidence: 99%

Methodological approach to creation of the 3D model of an oval-shaped open pit mine

et al. 2019

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A 3D model of optimal contours phased development of oval-shaped open pit mines is proposed in the article. It is assumed that with enough accuracy the volumetric contour of the open pit mine is interpolated by an elongated elliptic hyperboloid. The calculation formulas for mineral resources are derived and optimal volumes of overburden are determined depending on the mining phase. In this case, the total number of mining phases is set in advance. The stripping ratio is used as a quality criterion of the optimization task. The problem of optimal control is solved using the Bellman function in dynamic programming. All the necessary calculation formulas are obtained in the final form by solving the optimization problem. Their simplicity and substantiation of each conclusion ensure that the results of this study can be successfully applied in practical calculations of the design and planning of mining operations in open pit mining.

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Open Pit Mining Technology of Steeply Dipping Mineral Occurences by Steeply Inclined Sublayers

Cited by 29 publications

References 0 publications

Modelling hydraulic mixture movement along the extraction chamber bottom in case of hydraulic washout of the tuff-stone

Modelling hydraulic mixture movement along the extraction chamber bottom in case of hydraulic washout of the tuff-stone

Gas hydrates technologies in the joint concept of geoenergy usage

Methodological approach to creation of the 3D model of an oval-shaped open pit mine

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