Technological aspects of technogenic disturbance liquidation in the areas of coal-gas deposits development

The current state of mining operations in the open pits of the Pokrovsky mining and processing enterprise has been analyzed, where the shortcomings of existing technological schemes have been identified. Technical and organizational criteria have been identified that must be met by technological schemes for overburden and mining operations for the open-pits of the Pokrovsky mining and processing enterprise, where conveyor transport is used. Five technological schemes have been proposed for the Pivnichnyi open-pit, which provide for the reallocation of the height of overburden benches and the movement of overburden only to internal dumps without the use of conveyors. The dependences of the height of the internal dump and its resulting angle of slope on the re-excavation factor for the proposed technological schemes were obtained. The indicators have been calculated at which the most operating efficiency of mining and transport equipment for the Pivnichnyi open-pit of the Pokrovsky mining and processing enterprise (MPE) will be achieved and complete extraction of overburden rocks with cross movement to the internal dump without the use of conveyor transport will be ensured, and the production capacity of the quarry is also given according to the demand for ore.

Section: Resultsmentioning

confidence: 99%

Justification for mining overburden without the use of conveyor transport at the Pivnichnyi open pit of the Pokrovskyi mining and processing enterprise

Cherep,

Pilova

2024

“…When using a non-transport mining system, the dragline excavator is located at a safe distance В1 from the upper edge of the bench, which is ensured by the angle of stable structure of overburden rocks. With a complicated mining system, the safe distance from the upper edge is also taken into account [16,17]. To determine the maximum entry way width of the dragline excavator, it is necessary to take into account the parameters of the upper bench and the transport berm.…”

Section: Determining a Link Between The Mining Rate Of The Stoping Be...mentioning

confidence: 99%

Substantiating the rational parameters for a complicated non-transport system when mining low-thickness fireclay deposits

Chebanov,

Sobko,

Petlovanyi

2024

The paper examines a complicated non-transport system for mining a gently sloping fireclay deposit using ESH-10/70 dragline excavators. The research purpose is to substantiate the technological scheme of stripping operations and determine their parameters to reduce the strip-mining costs. Theoretical research is performed using the following methods: methods of scientific analysis of theoretical research, as well as practices of project and production organizations; mining-geometric calculations; variant method for comparing and selecting a mining system. As a result, the dependence of the excavator block mining velocity on the entry way width has been determined, which makes it possible to study the relationship between mining and stripping equipment in time. The change in the re-excavation coefficient depending on the width of the dragline excavator entry way has been studied and its rational value has been determined. The practical value of the research results is in the substantiation of an effective system for mining a gently sloping fireclay deposit.

“…The granulometric composition of the sands is given in Table . The parameters of the sand in terms of physical and chemical properties correspond to the possibility of its use in the composition of foundry molding sands with a high melting point [6]. In terms of grain and chemical composition [7], and physical and mechanical properties [8], the sands of the watered ledge correspond to the quartz group of molding sands [9] (GOST 2138-91. Molding sands.…”

Section: Introductionmentioning

confidence: 99%

Substantiation of technological resource-saving conditions for the use of equipment in the sand deposit mining

Bondarenko,

Shustov,

Pavlychenko

et al. 2023

The mining and technological features of the Gusarovsky deposit of molding sands mining under the conditions of technological limitations of the existing enterprise have been studied. The granulometric composition of balance reserve sands, as well as overburden rocks, was analyzed. In order to obtain a high-quality commercial product with a minimum content of fine and clay particles from the initial rock mass of the surface and watered ledges, the parameters of the hydromechanized complex were substantiated by mining and processing. The calculation is based on the three most available options for filling the mining and processing complex (MPC). To substantiate the rational parameters of the MPC and ensure the purification of the commercial product from fine impurities, a graphical characteristic of the hydraulic vertical classifier GKCD2000 was constructed when supplying clean water and at a slurry concentration of 10%. The graphical characteristics of hydraulic transport systems were constructed in accordance with the design diagrams of the accepted variants of the complex. To substantiate the rational parameters of the pumping station, the characteristics of the mining and processing complex were constructed when pumping clean water and slurry at a concentration of 10%. For the first time, the rational parameters of the technological complex of mining and processing, consisting of a suction dredger – a transport slurry pipeline – and a vertical hydraulic classifier GKCD2000, have been substantiated. The development of a technological complex of mining and processing will allow the existing enterprise to continue developing the deposit and obtaining high-quality commercial products under the conditions of technological limitations.