Estimation of geomechanical parameters of the “pair workings-pillar-working face” system
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- Category: Mining
- Last Updated on 11 July 2014
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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.
G.G. Storchak, State Higher Educational Institution “National Mining University”, Assistant Lecturer of the Department of Construction and Geomechanics, Dnipropetrovsk, Ukraine.
A.O. Logunova, State Higher Educational Institution “National Mining University”, Postgraduate Student of the Department of Construction and Geomechanics, Dnipropetrovsk, Ukraine.
A.Yu. Korol, Deputy Director on Economic Affairs, VP “Shakhta “Dimitrova” of the GP “Krasnoarmeyskugol”, Dimitrov, Donetsk oblast, Ukraine.
Abstract:
Purpose. To substantiate the rational parameters of the stability assuring measures provided for a skin-to-skin development heading being driven towards advancing mining face through determining the extension of breakage zone around the longwall, and the support pressure load by using the method of finite elements.
Methodology. The geomechanical conditions of rock massif and cross impact of the complex of development workings and mining have been considered based on the method of finite elements in three-dimension and flat task settings.
Findings. The solutions of the three-dimension and flat elastic-plastic problems allow to define the indices of stress concentration, the extent of breakage zone around working complex and support pressure load. This allows choosing required elements of the support.
Originality. It was determined that the width of the pillar between pair workings being equal to 3 meters is sufficient to provide required stability in regards to mining and geological conditions of the mine Dobropolskaya. It was determined that compression stress in the pillar from the side of coal-cutting working under the conditions of advancing face heading behind longwall opening reaches the value of σу=2,5γН.
Practical value. The results of the research allowed us to determine optimal parameters for safety assuring measures provided for the air heading of the eighth northern longwall of the seam m51вon the level of450 meters had been driven skin-to-skin in counter motion to the seventh northern conveyer heading. This allowed to provide the stability of this complex of development workings; and to apply the experience obtained for the conditions of PSP “ShU “Dobropolskoye”.
References:
1. Шашенко О.М. Геомеханічні процеси в породних масивах: монографія / Шашенко О.М., Майхерчик Т., Сдвижкова О.О. – Дніпропетровськ: НГУ, 2005. – 319 с.
Shashenko, A.N., Sdvyzhkova, Ye.A. and Majcherczyk, T. (2006), Heomekhanichni protsessy u porodnykh massyvakh [Geomechanical Processes in Rock Massifs], Monograph, National Mining University, Dnepropetrovsk, Ukraine.
2. Кирничанский Г.Т. Элементы теории деформирования и разрушения горных пород / Кирничанский Г.Т. – К.: Наукова думка, 1999. – 179 с.
Kyrnychanskyy, H.T. (1999), Еlementy teorii deformirovaniya y razrusheniya hornykh porod [Elements of the Theory of Deformation and Fracture of Rocks], Naukova dumka, Kiev, Ukraine.
3. Метод граничных элементов в задачах горной геомеханики / [Новикова Л.В., Пономаренко П.И., Приходько В.В. и др.] – Днепропетровск: Наука и образование, 1997. – 180 с.
Novikova, L.V., Ponomarenko, P.I. and Prikhodko, V.V. (1997), Metod granichnykh elementov v zadachakh gornoy mekhaniki [The Boundary Element Method in Problems of Mining Geomechanics], Science and Education, Dnepropetrovsk, Ukraine.
4. Левит В.В. Обоснование параметров способа обеспечения устойчивости сопряжений протяженных выработок: материалы междунар. конф. „Форум горняков“ (3–6 окт. 2012 г.) / В.В. Левит, В.В. Раскидкин // Національний гірничий університет – Дніпропетровськ, 2012. – Т. 2. – С. 100–106
Levit, V.V. and Raskidkin, V.V. (2012), “Justification of the ways to ensure stability of interfaces in long workings”, Proc. of the Conf. “Forum of Mining Engineers”, October, 3–6, Natіonal Mining Unіversity, Dnіpropetrovsk, Ukraine, Vol. 2., pp. 100–106.
5. SolidWorks. Компьютерное моделирование в инженерной практике / [Алямовский А.А., Собачкин А.А., Одинцов Е.В. и др.] – СПб.: БХВ-Петербург, 2005. – 800 с.
Alyamovsky, A.A ., Sobachkin, A.A., Odintsov, Ye.V., Kharitonovich, A.I. and Ponomarev N.B. (2005), SolidWorks. Kompyuternoye modelirovaniye v inzhenernoy praktike [SolidWorks. Computer modeling in engineering practice], BHV-Peterburg, St. Petersburg, Russia.
6. Hoek, E., Carranza-Torres, C. and Corkum, B. (2002), “Hoek-Brown criterion”, Proc. NARMS-TAC Conference, Toronto,
Vo l.1, pp. 267–273.
7. Hoek, E. (2002). Practacal Rock Engineering, Inststution of Mining and Metallurgy, London, pp. 325.
8. Ковров А.С. Моделирование устойчивости борта карьера методом конечных элементов: материалы междунар. конф. „Форум горняков – 2010“ (2–5окт. 2010 г.) / А.С. Ковров // Національний гірничий університет – Дніпропетровськ, 2010. – Т. 2. – С. 94–102
Kovrov, A.S. (2010), “Modeling of pit wall stability by finite element method”, Proc. of the Conf. “Forum of Mining Engineers”, October, 3–5, Natsіonal Mining Unіversity, Dnіpropetrovsk, Vol. 2., pp. 94–102.
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