Науковий вісник НГУ

Pre-conditions of creation of frame and anchor bolt support computational models taking into account nonlinear descriptions of physical environment

User Rating:  / 0

Details

Category: Development of fields

Last Updated on Wednesday, 14 August 2013 13:29

Published on Monday, 12 November 2012 16:09

Hits: 6178

Authors:

V.V. Fomichev, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Senior Lecturer of the Department of Underground Mining, Dnipropetrovsk, Ukraine

Abstract:

Purpose. To create an optimization calculation model for designing new types of lining for development workings of the Western Donbass mines.

Methodology. The cheapness of the construction of mathematical model and easiness of its implementation for simulating different loading systems has made this type of deflected mode analysis the high-usage tool. When constructing the computational model we always simplify the original object. But the implementation of new types of support and growth of stresses in the rock massif require taking into account an increasing number of factors which have nonlinear nature when evaluating the stability. Adequate modeling of the frame support flexibility is connected with possibility of integration in the computational model of significant displacements. Numerical simulation should represent the physical work made by an anchor to maintain the roof strata in the moment of partial softening of rocks along working contour and after it. The deflected mode of the lining depends on the change of stressed state of surrounding rocks. These changes occur as a result of excavation or its termination, appearance of rheological features of rocks, etc. A consistent calculation of various combinations of these properties and characteristics allows determining the criticality of the certain indices of computational model that substantially affects the quality of the experiments.

Findings. The characteristics of the influence of the mining processes and objects description accuracy for the designing of support structures used for maintenance of development workings in the Western Donbass mines have been received.

Originality. An algorithm of the influence of variable non-linear mechanical and geometrical characteristics on the stress-strain state of the ‘support – rock strata’ system has been obtained. The mathematical description of the range of possible feasible solutions of problems of the class has been created.

Practical value. Application of the described approaches enhances the adequacy of computer simulation which determines the optimum characteristics of development workings in the Western Donbass mines.

References:

1. Компьютерное моделирование напряженно-деформированного состояния мелкослоистого породного массива вокруг пластовой выработки. Книга I. Допредельная стадия деформирования системы „порода-крепь“ / Бондаренко В.И., Ковалевская И.А., Симанович Г.А., Фомичёв В.В. – Днепропетровск: Системные технологии, 2006. – Ч.I. – 172 с.
Bondarenko, V.I., Kovalevskaya, I.A., Simano-vich, G.A. and Fomichev, V.V. (2006), Kompyuternoye modelirovaniye napryazhenno-deformirovannogo sostoyania melkosloistogo gornogo massiva vokrug plastovoy vyrabotki. Kniga 1. Dopredelnaya stadiya deformirovaniya sistemy “poroda-krep” [Computer Simulation of the Stress Deformed State of Finely Stratified Rock Massif Around the Workings. Book 1st. The State Preceding Deformation of the “Rock–Lining” System], Part 1, System Technology, Dnipropetrovsk, Ukraine.

2. Развитие научных основ повышения устойчивости горных выработок шахт Западного Донбасса / Бондаренко В.И., Ковалевская И.А., Мартовицкий А.В., Фомичёв В.В. – Днепропетровск: Лізунов-Прес, 2010. – 340 с.
Bondarenko, V.I., Kovalevskaya, I.A., Martovits-ky, A.V., and Fomichev, V.V. (2010), Razvitiye nauchnykh osnov povysheniya ustoychivosti gornykh vyrabotok shakht Zapadnogo Donbassa [Development of Scientific Basis of Improvement of Excavation Pits Stability in the Western Donbass], Lіzunov-Pres, Dnipropetrovsk, Ukraine.

3. Методы расчета перемещений и упрочнения приконтурных пород горных выработок шахт Западного Донбасса / [В.И. Бондареко, И.А. Ковалевская, Г.А. Симанович и др.] – Днепропетровск: ТОВ „Підприємство „Дріант“, 2010. – 328 с.
Bondarenko, V.I., Kovalevska, I.A. and Simanovich, G.A. (2010), Metody rascheta peremeshcheniy i uprochneniya prikonturnykh porod gornykh vyrabotok shakht Zapadnogo Donbassa [Methods for Calculation of the Displacement and Strengthening of the Marginal Rocks in Mining Pits of the Western Donbass], TOV “Pіdpryiemstvo “Drіant”, Dnipropetrovsk, Ukraine.

4. Компьютерное моделирование напряженно-деформированного состояния мелкослоистого породного массива вокруг пластовой выработки. Книга II. Предельное и запредельное состояние системы „порода – крепь“ / Бондаренко В.И., Ковалевская И.А., Симанович Г.А., Фомичёв В.В. – Днепропетровск: Системные технологии, 2007. – Ч. II. – 198 с.
Bondarenko, V.I., Kovalevskaya, I.A., Simanovich, G.A. and Fomichev, V.V. (2007), Kompyuternoye modelirovaniye napryazhenno-deformirovannogo sostoyania melkosloistogo gornogo massiva vokrug plastovoy vyrabotki. Kniga 2. Predelnoye i zapredelnoye sostoyanie sistemy “poroda-krep” [Computer Simulation of the Stress Deformed State of Finely Stratified Rock Massif Around the Workings. Book 2nd. Deformed State of the “Rock–Lining” System] Part 2, System Technology, Dnipropetrovsk, Ukraine.

5. Фомичов В.В. Особливості обчислювального моделювання взаємодії анкера і порід гірського масиву / Фомичов В.В., Зубер Р.В, Сівак Г.П. // Науковий вісник НГУ. – Дніпропетровськ, 2010. – № 6. – С. 21–25.
Fomichev, V.V., Zuber, R.V., Sіvak, G.P. (2010), “Features of computational modeling of interaction between rock anchor and rock”, Naukovyi vistnyk Natsionlnoho hirnychoho universytetu, no.6, pp. 21–25.

6. Ковалевская И.А. Оптимизация работы рамно-анкерной крепи в подготовительных выработоках с использованием метода компьютерного моделирования / Ковалевская И.А., Фомичев В.В., Овчаренко А. // 22 World Mining Congress & Expo (11–16 сентября) – Стамбул, 2011. – Том I. – С. 267–278
Kovalevskaya, I.A., Fomichev, V.V. and Ovcharenko, A. (2011), “Optimization of frame-bolt support in the development workings, using computer modeling method”, the 22nd World Mining Congress & Expo, Istanbul, September 11–16, 2011, Vol.1, pp. 267–278.

2012_4_fomichev
2013-08-13  646.2 KB  1372

• < Prev
• Next >