Науковий вісник НГУ

Forecast of disjunctives based on mathematical interpretation of acoustic signal phase characteristics

User Rating:  / 0

Details

Category: Mining mechanics

Last Updated on Tuesday, 27 October 2015 21:15

Published on Tuesday, 27 October 2015 21:15

Hits: 2913

Authors:

A.N. Shashenko, Dr. Sci. (Tech.), Professor, State Higher Educational Institution “National Mining University”, Head of the Department of Construction and Geomechanics, Vice-Rector for International Relations, Dnipropetrovsk, Ukraine.

V.N. Zhuravlev, Dr. Sci. (Tech.), Senior Research Fellow, State Higher Educational Institution “National Mining University”, Senior Research Fellow of the Department of Construction and Geomechanics, Dnipropetrovsk, Ukraine.

Ye.A. Sdvizhkova, Dr. Sci. (Tech.), Professor, State Higher Educational Institution “National Mining University”, Head of the Higher Mathematics Department, Dnipropetrovsk, Ukraine.

M.S. Dubitska, Cand. Sci. (Tech.), State Higher Educational Institution “National Mining University”, Assistant Lecturer of the Higher Mathematics Department, Dnipropetrovsk, Ukraine.

Abstract:

Purpose. To increase the efficiency and reliability of a nondestructive technique to forecast hidden disjunctives in a flat-lying coal seam mined with plow longwall technology.

Methodology. To meet the goal an integrated approach was involved. It was based on the visual and instrumental observations in situ; analytical and numerical methods of tectonic map creation; analysis and interpretation of the results obtained by acoustic sounding.

Findings. The new technique was developed to process the acoustic signal exploring the heterogeneous rock mass. It distinguishes from the known techniques by being based on a phase demodulation of spectral power density using the method of low-frequency equivalent. This allows predicting the small amplitude tectonics of coal seams and rocks. The location of irregularities can be determined while driving an excavation over a zone of geological faults.

Originality. For the first time the relationship between the information component of acoustic signal modulation and hidden geological fault location were determined. The acoustic signals generated artificially have been used to explore the untouched part of the coal seam mined with plow technology under West Donbass geological conditions.

Practical value. The reliability of the hidden disjunctives forecast and rock mass tomography study in the “Stepova” mine owned by PAT “DTEK Pavlohradvuhillia” has been improved. 

References:

1. Шашенко О.М. Управління стійкістю протяжних виробок глибоких шахт: монографія / Шашенко О.М., Солодянкін О.В., Мартовицький А.В. – Дніпропетровськ: Лізунов Прес, 2012. – 400 с.

Shashenko, O.M., Solodiankіn, O.V. and Martovytskyi, A.V. (2012), Upravlinnia stiikistiu protiazhnykh vyrobok hlybokykh shakht [Extended Workings Stability Control in Deep Mines], Monograph, Lіzunov Pres, Dnіpropetrovsk, Ukraine.

2. Глухов А.А. Изучение газоносности угленосной толщи / Глухов А.А., Тиркель М.Г., Анциферов В.А. – Донецк: Вебер, 2008. – 208 с.

Glukhov, A.A., Tirkel, M.G. and Antsiferov, V.A. (2008), Izuchenie gazonosnosti uglenosnoy tolshchi [Study of Gas Bearing Capacity of Coal Seams], Veber, Donetsk, Ukraine.

3. Глухов А.А. Прогноз тектонических нарушений угольных пластов методом сейсмического просвечивания / А.А. Глухов, А.И. Компаниец, А.В. Анциферов // Геология и Маркшейдерия – Уголь Украины. – 2007. – №8. – С. 41–45.

Glukhov, A.A., Kompaniets, A.I. and Antsiferov, A.V. (2007), “Forecast of tectonic disturbances in coal seams by seismic survey”, Geology and Mine Surveying, Ugol Ukrainy, no.8, pp. 41–45.

4. Анциферов А.В. Методы и проблемы шахтной геофизики / А.В. Анциферов // Науковий вісник НГУ. – 2003. – №8. – С. 30–32.

Antsiferov, A.V. (2003), “Methods and problems of mining geophysics”, Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no.8, pp. 30–32.

5. Анциферов А.В. Теорія та практика шахтної сейсморозвідки / Анциферов А.В. – Донецьк: „АЛАН“, 2003. – 312 с.

Antsiferov, A.V. (2003), Teoriia ta praktyka shakhtnoi seismorozvidky [Theory and Practice of Mine Seismic Works], ALAN, Donetsk, Ukraine.

6. Солодянкин А.В. Актуальные задачи обеспечения устойчивости выработок при пересечении зон геологических нарушений: материалы международной конференции „Перспективы освоения подземного пространства“ / А.В. Солодянкин, В.В. Янко – Днепропетровск: РИК НГУ, 2008. – С. 43–46.

Solodyankin, A.V. and Yanko, V.V. (2008), “Actual tasks of stability ensuring at the intersection of geological disturbance zones”, Proc. of the International Conference “Prospects for Development of Underground Space”, RIK NGU, Dnepropetrovsk, pp. 43–46.

7. Лукинов В.В. Тектоника метаноугольных месторождений Донбасса / Лукинов В.В., Пимоненко Л.И. – К.: Наукова думка, 2008. – 352 с.

Lukinov, V.V. and Pimonenko, L.I. (2008), Tektonika metanougolnykh mestorozhdeniy Donbassa [Tectonics methane-coal mine fields of Donbass], Naukova Dumka, Kiev, Ukraine.

2015_02_shashenko
2015-10-10  2.18 MB  1014

• < Prev
• Next >