Vlasenko V.V.,Petukh O.P.,Vlasenko O.H.,Gavrylov V.Y. Results of prone-to-outburst coal seam degassing by hydrodynamic impact before their crossing by crosscuts

Details

Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 136

Geoteh. meh. 2017, 136, 42-50

RESULTS OF PRONE-TO-OUTBURST COAL SEAM DEGASSING BY HYDRODYNAMIC IMPACT BEFORE THEIR CROSSING BY CROSSCUTS

¹Vlasenko V.V., ¹Petukh O.P., ²Vlasenko O.H., ³Gavrylov V.Y.
¹IGTM NAS of Ukraine, ²State HEI «Oles Honchar DNU», ³MPTI FSAEI HE NEFU

UDC 622.831.325.3:622.831.322:532.5

Abstract. Annotation. In this article, processes occurred in the rocks under the hydrodynamic impact acted through the holes drilled from the development workings to the roof or bottom rocks and furtherto the coal seam are considered. Objective of the work was to estimate effectiveness of hydrodynamic impact, acted through one hole, on the strained gas-saturated coal seam before its crossing. Methods of researches included experiments conducted in the mines of the state enterprises ―Tsentralna Mine and ―Toretskvugillia with the following statistical data processing. In result of the experiments with hydrodynamic impact on the prone-to-outburst coal seams before their crossing by opening workings, parameters of the impact acted through the borehole with diameter of 100 mm were clarified. Amount of coal extracted from the borehole was determined for creating area of coal mass unloading with radius of not less than 4 meters beyond working contour. In order to obtain a mined area of coal seam with degassing coefficient not less than 0.45, it is necessary to extract coal through the borehole in amount of not less than 2 % of the coal amount in the mining area. Efficiency of hydrodynamic impact was estimated by amount of extracted coal, released gas and change of kinetics of methane release from the coal measured by the mine meter of methane masstransfer.
Keywords: Keywords: crosscut, technological borehole, hydrodynamic impact, gas-dynamic phenomena, methane desorption

REFERENCES

1. Ukraine Ministry of Coal Industry (2005), 10.1.00174088.011:2005. Pravyla vedennya girnychykh robit na plastakh, skhylnykh do gazodynamichnykh yavyshch [Rules of mining on the seams, which propensity to gas dynamic phenomena], Ukraine Ministry of Coal Industry, Kiev, Ukraine.
2. Amelin, V.A., Baradulin, Ye.H., Demidov, I.P., Nechytailo, V.O., Portyanko, V.P., Sylin, D.P., Sofiyskyi, K.K. and Shmelev, M.O., Institute of Geotechnical Mechanics name by N. Polyakov of National Academy of Sciences of Ukraine (1997), Prystriy dlya gidrodynamichnoy diy na vugilnyi plast [The device
for hydrodynamic impact on the coal seam], State Register of Patents of Ukraine, Kyiv, UA, №19956.
3. Bulat, A.F., Sofiyskyi, K.K and Sylin, D.P (2003), Gidrodinamicheskoe vozdeystvie na gazonasyshchennye ygolnye plasty [The hydrodynamic impact on gas-bearing coal seams], Poligrafist, Dnepropetrovsk, Ukraine.
4. Sofiyskyi, K.K., Zhytlonok, D.M., Baradulin, Ye.H., Moskovskiy, O.V., Petukh, O.P., Gavrylov, V.I. and Vlasenko, V.V., Institute of Geotechnical Mechanics name by N. Polyakov of National Academy of Sciences of Ukraine (2011), Sposib vyznachennya efektyvnykh parametriv degazatsii i rozvantazhennya vugilnogo plasta gidrodynamichnoyu dieyu [Method of determining the effective parameters of degassing and unloading of the coal seam by hydrodynamic impact], State Register of Patents of Ukraine, Kyiv, UA, № 58316.
5. Shazhko, Ya.V. (2011), ―Expres method of determining the pressure and the amount of methane in coal seams, Fiziko-technicheckie problemy gornogo proizvodspva, no. 14, pp. 60-67.
6. Agaiev, R., Vlasenko, V. and Kliuev, E. (2014), ―Methane receiving from coal and technogenic deposits, Progressive technologies of coal, coalbed methane, and ores mining, pp. 113-119.
7. Sofiyskyi, K.K., Zhytlonok, D.M., Gavrylov, V.I., Vlasenko, V.V. and Petukh, O.P. (2015), Gidrodinamicheskie sposoby vozdeystviya na napryazhonnye gazonasyshchennye ugolnye plasty [Hydrodynamic methods of impact on stressed gas-saturated coal seams], Shidnyi Vydavnychyi Dim, Donetsk, Ukraine.

 About the authors:

Vlasenko Vasyl Victorovych, Candidate of Technical Sciences (Ph.D.), Senior Researcher of Department of Underground Coal Mining Technology, Institute of Geotechnical Mechanics name by N. Polyakov of National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Petukh Oleksandr Petrovych, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher of Department of Underground Coal Mining Technology, Institute of Geotechnical Mechanics name by N. Polyakov of National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Vlasenko Olha Grygoriivna, student, Physics and Technology Faculty, State Higher Educational Institution ―Oles Honchar Dnipro National University (SHEI «Oles Honchar DNU»), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. . Gavrylov Vyacheslav Ivanovych, Doctor of Technical Sciences (D.Sc.), Senior Researcher, Professor of Department of Mining and Oil and Gas, Mirny Polytechnic Institute (branch) of North-Eastern Federal University of Federal State Autonomous Educational Institution of Higher Education "M. K. Ammosov North-Eastern Federal University" (MPTI FSAEI HE NEFU), Mirny, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it. .

• < Prev
• Next >