Minieiev S.P., Usov O.O., Naryvskyi R.M. The research of liquid filtration during the processing of coal With a water-foam solution based on antipyrogen

Details

Parent Category: Geo-Technical Mechanics, 2023

Category: Geo-Technical Mechanics, 2023, Issue 166

Geoteh. meh. 2023, 166, 134-146

https://doi.org/10.15407/geotm2023.166.134 

 

THE RESEARCH OF LIQUID FILTRATION DURING THE PROCESSING OF COAL WITH A WATER-FOAM SOLUTION BASED ON ANTIPYROGEN

Minieiev S.P., Usov O.O., Naryvskyi R.M.

M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine

UDC 622.82: 622.454.2

Language: English

Abstract. One of the measures used in mines concerning to decrease the outburst hazard of coal seams is their hydro-loosening with water under high pressure through seam wells. Injection of water and solutions on the basis of antipyrogens into a coal seam, which is prone to spontaneous combustion, is used to decrease the occurrence of endogenous fires. It is known that the saturation of coal with liquid changes the properties and mechanical characteristics, and results to the unloading of the seam of mining tunnel. Therefore, the assessment of changes in geomechanical parameters in the near-contour zone before and after hydroprocessing of the seam is a very relevant task. Knowledge of the dynamics of the formation of the stress field around the mine tunnels will allow to improve the technology of processing the coal seam with antipyrogens. Most of the information related to observations of the process of water injection in mine conditions is given in different publications of advanced basin institutes.The purpose of the research is the definition the parameters of liquid filtration when spreading of antipyrogen in the massif and the corresponding change in the properties of coal processed with a water-foam solution based on the antipyrogen to prevent explosions and fires of outburst hazard, a tendency to self-ignition coal seams. The research was carried out in laboratory conditions on stand of two-dimensional filtration of liquid with an antipyrogen through a coal sample, which was made in the form of cube with hole in the middle of the sample. The developed method of measurement makes it possible to establish the relative dimensionless filtration coefficient of the antipyrogen solution to water, with consideration of suffusion and colmatation effects. The undulating character of the change in hydraulic permeability when the concentration of the antipyrogen changed within 0÷1.5% is established for the first time. At the same time, with a further increase in concentration to 4% the permeability decreases monotonically. Also, research of changes in the air permeability of samples, that are processed with antipyrogen solution over time proves that there is no threat of an increase in danger occurrence of a sudden outburst during the hydro-loosening of the heading face with antipyrogens. It can be noted that the established the character allows to significantly reduce work expenses when established the optimal hydraulic parameters of processing seam with antipyrogens.
Keywords: antipyrogen, coal seam, liquid filtration, concentration of the solution, sudden outburst.

REFERENCES

1. Minieiev, S.P. (2016), Prognoz ta sposoby z hazodynamichnymy yavyshchamy na shakhtakh Ukrayiny [Forecast and methods of combating gas-dynamic phenomena in Ukrainian mines], Skhidnyy vydavnychyy dim, Mariupol’, Ukraine.

2. Bulat, A.F., Minieiev, S.P., Smolanov, S.M. and Belikov, I.B. (2021), Pozhezhi u hirnychykh vyrobkakh. Izolyatsiya avariynykh dilyanok [Fires in mine workings. Isolation of emergency areas], V spravi, Kharkiv, Ukraine.

3. Minieiev, S.P., Potapenko, A.A., Mkhatvari, T.Ya, Nikiforov, A.V., Kuzyara, S.V. and Timofeev, E.I (2013), Pidvyshchennya efektyvnosti hidrorozpushuvannya vykydonebezpechnykh vuhilʹnykh plastiv [Increasing the efficiency of hydraulic loosening of outburst-prone coal seams], Skhidnyy vydavnychyy dim, Donets’k, Ukraine.

4. Minieiev, S.P., Usov, O.O. and Poliakov, Yu.E (2021), Napirna fil’tratsiya u vuhleporodnomu masyvi [Pressure filtration in a carbon rock mass], Bila, Dnipro, Ukraine.

5. Minieiev, S.P., Rubins’kyy, A.A., Vitushko, O.V. and Radchenko, A.G. (2010), Hirs’ki roboty u skladnykh umovakh na vykydonebezpechnykh vuhil’nykh plastakh [Mining operations in difficult conditions on outburst-prone coal seams], Skhidnyy vydavnychyy dim, Donets’k, Ukraine.

6. Pashkovskyi, P.S. (2013), Endohenni pozhezhi u vuhil’nykh shakhtakh [Endogenous fires in coal mines], Noulidzh, Donets’k, Ukraine.

7. VostNII (1986), Kerivnytstvo shchodo zastosuvannya sposobiv hal’muvannya rozvytku samonahrivannya vuhillya u vyroblenykh prostorakh poliv shakht [Guidelines for the application of methods for inhibiting the development of self-heating of coal in mined-out spaces of mine fields], VostNII, Kemerovo,USSR.

8. Usov, O.A (2017), “Laboratory studies of two-dimensional water filtration through coal samples”, Natsional’nyy hirnychyy universytet, Forum hirnykiv, materialy mizhnar. konfer. [National Mining University, Girniky Forum: materials of the international conference], Dnipro, Ukraine, 2017, pp. 298–307.

9. Krukovskyi, O.P., Krukovska, V.V. and Usov, O.O. (2020), “Influence of coal treatment with water and antipyrogens on the formation of a stress field around a mine working”, Geotechnical mechanics, no. 150, pp. 116–126. https://doi.org/10.15407/geotm2020.150.116

10. Poturayev, V.N. and Minieiev, S.P. (1993), Pul’satsiyni ta khvyl’ovi efekty v hirs’komu masyvi [Pulsation and wave effects in a mountain range], Naukova dumka, Kyyiv, Ukraine.

11. Minieiev, S.P. (2009), Vlastyvosti hazonasychenoho vuhillya [Properties of gas-saturated coal], NHU, Dnipropetrovs’k, Ukraine.

12. Mukha, O.A. and Puhach, I.I. (2009), Rozrakhunok parametriv dehazatsiynykh system [Calculation of parameters of degassing systems], NHU, Dnipropetrovs’k, Ukraine.

13. Portola, V.A., Ovchynnykov, A.E. and Zhdaniv, A.N. (2019), “Assessment of measures to prevent endogenous fires in coal seams”, Mining information and analytical bulletin, no. 12, pp. 205–215. https://doi.org/10.25018/0236-1493-2019-12-0-205-214

14. Isakov, V.S. (2023), ‘’Methods of loosening in mining: Preparing rocks for excavation’’, International scientific journal «BULLETIN OF SCIENCE», vol. 4, no 2 (59), pp. 274–277. 

 

About the authors:

Minieiev Serhii Pavlovych, Doctor of Technical Sciences (D.Sc.), Professor, Head of Department of Pressure Dynamics Control in Rocks, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Usov Oleh Oleksandrovych, Candidate of Technical Sciences (Ph.D.), Senior Researcher in Department of Pressure Dynamics Control in Rocks, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine.

Naryvskyi Roman Mykolaiovych, Junior Researcher in Departament of Pressure Dinamics Control in Rocks, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine.

• < Prev
• Next >