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Technology of rock massif state control

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Category: Mining

Last Updated on 04 February 2016

Published on 04 February 2016

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Authors:

V. Demin, Dr. Sci. (Tech.), Professor, Karaganda State Technical University, Professor, Karaganda, Kazakhstan.

N. Nemova, Cand. Sci. (Tech.), Karaganda State Technical University, Senior Instructor, Karaganda, Kazakhstan.

T. Deminа, Cand. Sci. (Tech.), Karaganda State Technical University, Senior Instructor, Karaganda, Kazakhstan.

Yu. Steflyuk, Karaganda State Technical University, Doctoral Student, Karaganda, Kazakhstan

Abstract:

Purpose. The development of progressive technological schemes of roof bolting for mine tunnels for ensuring safe and effective support in the zones with increased stresses in the border rocks, unstable and broken enclosing rocks.

Methodology. The study of stressed-and-strained state, rock-pressure manifestations, conditions of the workings maintenance depending on mining-and-geological, mining and technological parameters that is aimed to establish the extent of their impact on the efficiency of the mine tunnels roof bolting and justification of support patterns ensuring stability and decreasing imperfection and costs spent on its mounting and maintenance.

Findings. The research resulted in technical and technological solutions aimed to improve the technology and means of roof bolting: carrying out in-seam workings on an outburst-prone seam; supporting development openings in unstable rocks; supporting preparatory workings in the zones with various mining pressure; constructing workings in the joint development of coal layers.

Originality. We have established consistent patterns of change in the zones of inelastic deformations with their development in time and dependence of contours stability on mining-and-geological and mining factors; determined the support parameters ensuring reliable operation of the working. Based on the analytical modeling we have developed technology, systems and means aimed to decrease the imperfection of contours of workings.

Practical value. The rational parameters and the field of application of roof bolting in the conditions of the Karaganda coal basin have been determined and justified. The rational technology of drifting workings has been developed based on controlling the geomechanical condition of the enclosing rock massif. Its optimum parameters depending on mining conditions have been determined. Progressive technological solutions on the ways and means of roof bolting of mining workings for complicated operation conditions have been found. The progressive technology of the development opening in coal-and-rock massif with complicated mining technological operation conditions has been developed. The parameters of roof bolting in the conditions of development of in-seam mineral deposits in the presence of the complicating factors have been justified.

References:

1. Hudson, J.A. and Harrison, J.P. (1997), Engineering Rock Mechanics. Part 2, London.

2. Сидсмен Р. Обзор анкерного крепления на шахтах Караганды / Сидсмен Р.// Арселор-Миттал. AC-R03. 2010. – 35с.

Sidsmen, R. (2010), “Overview of anchoring in the mines of Karaganda”, ArcelorMittal, AS-R03, pp. 35.

3. Картозия Б.А. Инженерные задачи механики подземных сооружений / Картозия Б.А., Борисов В.Н. − М.: Изд-во Московского государственного горного университета, 2001. − 326 с.

Kartozia, B.A., Borisov, V.N. (2001), Inzhenernye zadachi mekhaniki podzemnykh sooruzheniy [Engineering Problems of Mechanics of Underground Structures], Publishing House of the Moscow State Mining University, Moscow, Russia.

4. T. Sasaoka, K. Matsui & H. Shimada, Kyushu University, J.H. Furukawa & M. Uehara, Japan Coal Center, J.S. Kramadibrata, B. Sulistianto & R.K. Watinena, Institute of Technology, Bandung, (1997), “Roof Support Systems at a New Underground Mine Developed from Open-Cut Highwall in Indonesia”, pp. 119–240.

5. Цай Б.Н. Механика подземных сооружений / Цай Б.Н., Судариков А.Е. – Караганда: Изд-во КарГТУ, 2007. − 159 с.

Tsai, B.N. and Sudarikov, A.Ye. (2007), Mekhanika podzemnykh sooruzheniy [Mechanics of Underground Structures], KSTU, Karaganda, Kazakhstan.

6. Влияние угла установки анкерной крепи на деформации массива горных пород: материалы IX Международной научно-практической конференции «Ключевые аспекты научной деятельности». Технические науки. / В.Ф. Демин, М.М. Баймульдин, В.В. Журов [и др.] − Прцемисл–Прага (Чехия): Наука студия, 2013. − вып. 16. – С. 68−72.

Demin, V.F., Baymuldin, M.M., Zhurov, V.V. and Demin, V.V. (2013), “The influence of the angle of installation of roof bolting on the deformation of the rock mass”, Proc. of the IX International Scientific-Practical Conf. “The Key Aspects of Scientific Activity”, Technical sciences, no. 16, pp. 68−72.

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