Improvement of energy efficiency and safety in coal longwalls

Kopylov, K.N.; Suek, Moscow; Kubrin, S.S.; Reshetnyak, S.N.; Misis, Moscow Nust

doi:10.17580/gzh.2019.04.19

Cited by 8 publications

(3 citation statements)

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“…It was performed using the Monte-Carlo algorithm described in Refs. 17 , 18 , which makes it relatively easy to take into account complex boundaries of the experimental kinematic domain, as well as the inhomogeneity of the spatial distribution of the deuteron target.…”

Section: Resultsmentioning

confidence: 99%

The role of final-state interaction in tensor polarization effects of the reaction $$\gamma d \rightarrow p n \pi ^{0}$$

Gauzshtein

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Vasilishin

et al. 2023

Sci Rep

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Tensor analyzing-power components $$T_{20}$$ T 20 , $$T_{21}$$ T 21 , and $$T_{22}$$ T 22 for the reaction $$\gamma d\rightarrow np\pi ^0$$ γ d → n p π 0 have been studied for the first time in the photon energy range from 280 to 500 MeV. The data are extracted from the experimental statistics accumulated at the VEPP-3 storage ring in 2002–2003. The measured asymmetries are compared with the results of statistical simulations performed with the $$\gamma d\rightarrow np\pi ^0$$ γ d → n p π 0 amplitude from a spectator model, taking into account corrections for the final-state interaction. The comparison demonstrates quite good agreement between the experimental results and the theory.

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Section: Resultsmentioning

confidence: 99%

The role of final-state interaction in tensor polarization effects of the reaction $$\gamma d \rightarrow p n \pi ^{0}$$

Gauzshtein

Fix

Vasilishin

et al. 2023

Sci Rep

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“…Mines that develop gas-bearing seams prone to spontaneous combustion and rock bumps are distinguished by the most complicated development conditions [32][33]. The technology of seams development hazardous to rock bumps with the retention of barrier pillars 30-45 m wide, used at the Alardinskaya mine, does not allow excluding dynamic phenomena due to overlapping reference pressure zones and an increase in the inter-panel pillar stress.…”

Section: Discussionmentioning

confidence: 99%

Numerical analysis of inter-panel pillars in the bump prone conditionals of the Alardinskaya mine

2021

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The purpose of the paper is to substantiate the width of the barrier and yield pillars for the application of a new seam development scheme in the conditions of the Alardinskaya mine (Russia). The Alardinskaya mine develops gas-bearing coal seams that are prone to spontaneous combustion and are hazardous due to rock bumps, which leads to frequent accidents. The analysis of the world experience of mining seams being hazardous to rock bumps showed that safe mining with longwalls can be provided by a system of inter-panel pillars: very wide barrier pillar and two yield pillars. Numerical modeling using the finite element method was carried out to assess the possibility of reducing the barrier pillar width in order to decrease the volume of coal losses in the subsoil. The model of rock massif was created in Ansys mechanical software. Numerical modeling of the longwall panel development with longwalls was carried out at various widths of broad and yield pillars. The analysis outcomes of the vertical stresses diagrams in the seams are presented for different parts of the longwall panel. The rational parameters of the pillar system, ensuring the minimization of the reference pressure influence from the previously worked-out column and the reference pressure of the operating longwall, are determined as a result of numerical analysis. The conclusion is made about the expediency of the technological scheme application proposed by the authors in the conditions of the Alardinskaya mine to reduce the endogenous fire hazard and the danger of rock bumps.

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“…In the structure of electricity consumption, the bulk -40% -is spent on mining commercial minerals [26][27][28]. The losses in the transfer of electricity over the public networks are fairly large, their share tops 13%.…”

Section: Electricity Savings Potentialmentioning

confidence: 99%

Energy conservation challenges and potential in Russia’s North-East region

et al. 2020

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The paper discusses challenges and a potential of fuel and energy savings in one of the republics of the North-Eastern region of the Russian Federation. The authors show the challenges of energyand heatsaving, with due account too particular features of Sakha Republic (Yakutia), which include: inconsistency of the actual operating conditions of the equipment with the requirements of regulatory documents in force; problems in supplying the consumers in the decentralized zone. The region’s goals in the segment of energy saving are determined. A detailed assessment of energy-saving potential in the electricity, thermal and fuel saving sectors is carried out. Energy saving is achieved mainly by reducing the losses in general-purpose utility networks, when switching to energy-saving lighting devices, as well as by reducing electricity consumption rate for water pumping, supply and sewage disposal. Heat energy savings can primarily be achieved only by reducing losses in heating services’ networks. Considerable fuel savings can be obtained by reducing the fuel consumption rate in boiler houses and diesel-run power plants. The results show high potential for energy savings in the region. Energyand fuel-intensive activities alone could save the estimated 1 million TOE every year.

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Improvement of energy efficiency and safety in coal longwalls

Cited by 8 publications

References 0 publications

The role of final-state interaction in tensor polarization effects of the reaction $$\gamma d \rightarrow p n \pi ^{0}$$

The role of final-state interaction in tensor polarization effects of the reaction $$\gamma d \rightarrow p n \pi ^{0}$$

Numerical analysis of inter-panel pillars in the bump prone conditionals of the Alardinskaya mine

Energy conservation challenges and potential in Russia’s North-East region

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