Method for calculating the groundwater inflow into pit when mining the placer deposits by dredger

Sobko, B; Haidin, Anatolii; Ложніков, Олексій Володимирович; Jarosz, Jacek

doi:10.1051/e3sconf/201912301025

Cited by 10 publications

(7 citation statements)

References 30 publications

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“…When implementing such types of technological schemes influence on the environment and prediction of groundwater inflow must be considered [26]- [29] as well as geological conditions [30].…”

Section: Introductionmentioning

confidence: 99%

Substantiation of mining systems for steeply dipping low-thickness ore bodies with controlled continuous stope extraction

Rysbekov¹,

Bitimbayev²,

Akhmetkanov³

et al. 2022

Min. miner. depos.

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Purpose. The solution to one of the important problems of the underground mining method is to substantiate cost-effective, technologically feasible and safe variants for mining steeply dipping low-thickness ore bodies. Methods. Mining systems are substantiated on the basis of a detailed analysis of the developed and existing experiential variants for mining steeply dipping ore bodies, identifying production and economic disadvantages, as well as their causes. Findings.As a result of the research, the pillar raise performance in the mining system with ore shrinkage has been substantiated. The main parameters of the proposed variants for mining systems with ore shrinkage, intended for expansion-type supports and borehole breaking, have been substantiated. A design has been developed of fastening the material-running raises (MRR) and ventilating raises (VR) on the working and ventilation horizons to ensure their performance in the mining system with ore shrinkage. Originality. For the first time, dependences of dilution and labour productivity on the ore body thickness and the type of ore breaking for blast-hole stoping and borehole breaking for a single and “twinned block” have been obtained. In addition, a certain dependence of the loading and delivery performance on the average fractional composition, as well as on the delivery distance, has been obtained. Practical implications. The research is characterized by scientific innovations created for the first time, which are able to ensure the efficiency and safety of mining operations, while creating the ability to manage the loss of minerals and dilution in the block, as well as reaching their calculated optimal ratio in order to achieve the most cost-effective production rate.

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Section: Introductionmentioning

confidence: 99%

Substantiation of mining systems for steeply dipping low-thickness ore bodies with controlled continuous stope extraction

Rysbekov¹,

Bitimbayev²,

Akhmetkanov³

et al. 2022

Min. miner. depos.

View full text Add to dashboard Cite

show abstract

“…Therefore, in solving the problem of a significant increase in the volume of the gross domestic product, the mining industry of Kazakhstan is given the lea-ding role. However, given the current economy state, the construction of new mining and processing enterprises is not expected in the coming years [16], [17]. Therefore, the main task is to find reserves for increasing the open-pit mining efficiency at existing enterprises.…”

Section: Introductionmentioning

confidence: 99%

Substantiation and development of innovative container technology for rock mass lifting from deep open pits

Khussan¹,

Abdiev²,

Bitimbayev³

et al. 2022

Min. miner. depos.

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Purpose. The research purpose is to substantiate the rational parameters of innovative container technology for transporting mine rocks in open pits with account of technological advantages. Methods. The winding machine normal operation was determined by calculation performed. The container metal structure was designed in the environment of the Compass-3D software complex. The structural elements were tested for normal operation using computer modeling methods in the APM WinMachine 9.7 program, which gives the possibility to obtain the strength calculation values. Findings. The results of modeling the stresses on the wall of the container and the frame, as well as the yield strength are presented. The test calculation confirms the technical feasibility for operating the dragline-based mine winding machines. The influence of the container capacity on the performance of the winding machine has been determined and the dependence of the economic efficiency of the container technology introduction at the open pit depth has been revealed. Originality. For the first time, on the basis of computer modeling, the parameters of stress distribution on the container wall have been substantiated when performing a strength calculation. It has been determined that the maximum stress in the container wall is 117.52 N/mm2; the principal stress value is 83.85 N/mm2. The safety factor for yield strength is 1.8. The maximum load acting on the structure is 957.5 kgf, which does not exceed the calculated value. Practical implications. The practical importance is to improve mining efficiency, reduce the cost of transporting rocks and ensure automatic container unloading. The use of replaceable containers in open pits can significantly change the formation principles of shovels and transport complexes, increase their performance and the efficiency of shovels in the main processes.

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“…The main reasons for the deterioration of the ecological condition of surface water bodies are insufficient number and low level of efficiency of existing treatment facilities, limited number of return water supply systems, emergency condition of a significant part of water supply and sewerage networks, etc. [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Substantiation of technological solutions for the protection of water resources in the development of coal deposits

Pavlychenko

Кулікова

Borysovska

2022

IOP Conf. Ser.: Earth Environ. Sci.

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In the case of mechanical treatment of mine water in settling tanks according to the existing technology the concentration of suspended solids during the discharge of clarified effluents into water bodies does not correspond to the maximum permissible content of mechanical impurities set for surface water bodies. The technology of mine water cleaning has been improved due to the introduction of a horizontal settling tank of modernized construction and installation of purification of fast open granular filters with downward liquid flow at the final stage. The expected technological parameters of the proposed horizontal settling tank for the conditions of water disposal of the operating coal mining enterprise are determined. The dependences between the depth of sedimentation of particles of the suspension of a certain hydraulic size in the proposed horizontal settling tank, its length and clarifying efficiency of mine water pre-treated with a solution of aluminium sulphate are obtained. It is established that the overall efficiency of clarifying of mine waters pumped to the surface by a coal mining enterprise, after treatment by the proposed technology will be 94-95% of the initial concentration of suspended solids, which does not exceed the relevant quality of surface water.

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Method for calculating the groundwater inflow into pit when mining the placer deposits by dredger

Cited by 10 publications

References 30 publications

Substantiation of mining systems for steeply dipping low-thickness ore bodies with controlled continuous stope extraction

Substantiation of mining systems for steeply dipping low-thickness ore bodies with controlled continuous stope extraction

Substantiation and development of innovative container technology for rock mass lifting from deep open pits

Substantiation of technological solutions for the protection of water resources in the development of coal deposits

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