Polymer concrete and fibre concrete as efficient materials for manufacture of gear cases and pumps

Yelemessov, Kassym; Krupnik, L. A.; Bortebayev, Sayin; Beisenov, Bauyirzhan; Baskanbayeva, Dinara; Igbayeva, Akzhan

doi:10.1051/e3sconf/202016800018

Cited by 9 publications

(6 citation statements)

References 3 publications

(5 reference statements)

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“…Classical analysis of the hydraulic seam fracturing is based on the Kirsch solution for stress distribution around a circular hole in a homogeneous, isotropic, elastic material exposed to high compressive stresses [46]. The main research objective when using the hydraulic fracturing method is to determine the value and directions of the principal stresses and the natural stress field acting in the rock mass for further use in planning [47]- [48].…”

Section: Figure 1 Cable Fastening Test Area Figure 2 View Of An Area ...mentioning

confidence: 99%

Reduction of ore dilution when mining low-thickness ore bodies by means of artificial maintenance of the mined-out area

Mussin¹,

Imashev²,

Matayev³

et al. 2023

Min. miner. depos.

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Purpose. The research purpose is to study the effectiveness of artificial maintenance of the mined-out space based on the use of cable bolts to reduce the dilution coefficient when mining low-thickness ore bodies. Methods. Geotechnical mapping of the rock mass according to the Q, RMR, RQD and GSI rating classifications is conducted, as well as a linear survey of the fracture system in the hanging wall and footwall rocks is performed using a rock compass and the GEO ID application. Numerical analysis by the limit equilibrium method in the Unwedge software package is applied to determine the safety factor of a mass divided by fractures into wedges. Using a Schmidt test hammer, the uniaxial compressive strength of the mass rocks has been determined. The full-scale studies have been conducted using cable support in the conditions of the Akbakai deposit. Findings. It has been revealed that the footwall rocks are in a stable state, while the safety factor of the hanging wall rocks is 0.98, which requires artificial maintenance using cable bolts. The cable support parameters are calculated taking into account nonuniform distribution of horizontal and vertical stresses in the rock mass. It has been determined that when strengthening the hanging wall with cable bolts in inclined veins with a dip angle of up to 40º, the average ore dilution is 66.1%, and that of previously mined without fastening is 68.7%. In similar experiments in steep-dipping veins with a dip angle of more than 60º, dilution decreases from 62.8 to 48.7%. Originality. It has been revealed that in the conditions of the Akbakai deposit, cable fastening of the hanging wall rocks is effective at an ore deposit dip angle of more than 60º, at which the mined ore dilution coefficient decreases. Practical implications. The research results can be used to increase the stability of hanging wall rocks when mining low-thickness ore bodies with a sublevel caving system.

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Section: Figure 1 Cable Fastening Test Area Figure 2 View Of An Area ...mentioning

confidence: 99%

Reduction of ore dilution when mining low-thickness ore bodies by means of artificial maintenance of the mined-out area

Mussin¹,

Imashev²,

Matayev³

et al. 2023

Min. miner. depos.

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“…In advancing the methodology for substantiating potential water inflow into a quarry's mined-out space, incorporating innovative materials such as polymer concrete and fiber concrete for the manufacturing of gear cases and pumps proves essential, with a focus on studying the efficacy of fiber-reinforced concrete in casting housing parts of pumps to enhance durability and resistance [74], [75]. Furthermore, employing supervised machine learning techniques for analyzing the compressive strength of steel fiber-reinforced concrete can optimize the selection of materials, contributing to the overall efficiency and sustainability of the water drainage system in mining operations [76].…”

Section: Determination Of Water Inflow Into the Mined-out Space Of A ...mentioning

confidence: 99%

Mining of non-metallic mineral deposits in the context of Ukraine’s reconstruction in the war and post-war periods

Saik,

Cherniaiev,

Anisimov

et al. 2023

Min. miner. depos.

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Purpose. The research purpose is to study the conditions for mining deposits of metamorphic and igneous origin to produce crushed stone products in conditions of limited electricity supply. Methods. The research uses an integrated approach, including data analysis on quarry field spatial dimensions and the overburden rock thickness, which provides the basis for identifying deposits into basic groups. For the identified groups of deposits, taking into account the hydrological characteristics of non-metallic deposits and their parameters, patterns have been determined that characterize the change in the normative atmospheric precipitation inflow, based on the quarry field area and the change in the specific costs for water drainage depending on the studied quarry field type. Based on data on technical characteristics of mobile and semi-stationary units and aggregates, the parameters of physical-mechanical properties of granites and diorites, technical-technological solutions for the formation of complexes for processing raw materials for the production of crushed stone products are proposed. Findings. Problems arising during mining operations under conditions of limited electricity supply, which is caused by mass attacks on Ukraine’s energy infrastructure, have been revealed. A systematization of deposits of igneous and metamorphic origin for mining of rock building materials, which are the basis for the production of crushed stone products, has been developed. The rates of water inflow into the mined-out space depending on the quarry field spatial parameters and the depth of mining operations have been studied. Technological schemes of the apparatuses of a complex for processing raw materials for production of crushed stone products and the apparatuses of a complex for processing siftings are proposed. Originality. Dependences of possible water inflow into the mined-out space of the quarry and change in energy consumption for water drainage have been determined, taking into account the accepted classification criteria, namely the quarry field spatial dimensions, the overburden rock thickness and the quarry depth. Practical implications. The obtained data on the possible water inflow into the mined-out space of the quarry and change in energy consumption for water drainage make it possible to assess the efficiency of pumping units. The proposed technical-technological solutions on formation of complexes for processing raw materials to produce crushed stone products have been developed in accordance with the fundamental provisions of the Law of Ukraine “On approval of the National program for the development of the mineral resource base of Ukraine for the period up to 2030”.

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“…Theoretical issues related to the operation of jet pumps in oil wells were considered in the works in [21,22]. Practical issues related to the efficiency and reliability of pumping equipment are considered in [23][24][25]. A case of placing the jet pump above the dynamic level of the well is also used in order to extract gas from its annulus, which made it possible to stabilize the dynamic level and increase the reliability of the ESP system [26].…”

Section: State Of the Current Development Of The Problem And Formulating A Research Taskmentioning

confidence: 99%

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

et al. 2021

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During oil fields operation, gas is extracted along with oil. In this article it is suggested to use jet pumps for utilization of the associated oil gas, burning of which causes environmental degradation and poses a potential threat to the human body. In order to determine the possibility of simultaneous application of a sucker-rod pump, which is driven by a rocking machine, and a jet pump (ejector) in the oil well, it is necessary to estimate the distribution of pressure along the borehole from the bottomhole to the mouth for two cases: when the well is operated only be the sucker-rod pump and while additional installation of the oil-gas jet pump above its dynamic level. For this purpose, commonly known methods of Poettman-Carpenter and Baksendel were used. In addition, the equations of high-pressure and low-pressure oil-gas jet pumps were obtained for the case, when the working stream of the jet pump is a gas-oil production mixture and the injected stream is a gas from the annulus of the well. The values which are included in the resulting equations are interrelated and can only be found in a certain sequence. Therefore, a special methodology has been developed for the practical usage of these equations in order to calculate the working parameters of a jet pump based on the given independent working parameters of the oil well. Using this methodology, which was implemented in computer programs, many operating parameters were calculated both for the well and for the jet pump itself (pressures, densities of working, injected and mixed flows, flow velocities and other parameters in control sections). According to the results of calculations, graphs were built that indicate a number of regularities during the oil well operation with such a jet pump. The main result of the performed research is a recommendation list on the choice of the oil-gas jet pump location inside the selected oil well and generalization of the principles for choosing the perfect location of such ejectors for other wells. The novelty of the proposed study lays in a systematic approach to rod pump and our patented ejector pump operation in the oil and chrome plating of pump parts. The result of scientific research is a sound method of determining the rational location of the ejector in the oil well and the calculation of its geometry, which will provide a complete selection of petroleum gas released into the annulus of the oil well. To ensure reliable operation of jet and plunger pumps in oil wells, it is proposed to use reinforcement of parts (bushings, plungers, rods, etc.) by electrochemical chromium plating in a flowing electrolyte. This has significantly increased the wear resistance and corrosion resistance of the operational surfaces of these parts and, accordingly, the service life of the pumps. Such measures will contribute to oil production intensification from wells and improve the environmental condition of oil fields.

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Polymer concrete and fibre concrete as efficient materials for manufacture of gear cases and pumps

Cited by 9 publications

References 3 publications

Reduction of ore dilution when mining low-thickness ore bodies by means of artificial maintenance of the mined-out area

Reduction of ore dilution when mining low-thickness ore bodies by means of artificial maintenance of the mined-out area

Mining of non-metallic mineral deposits in the context of Ukraine’s reconstruction in the war and post-war periods

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

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