Krukovskyi O.P., Krukovska V.V. Technology of roof bolting of mine working at crossing of geological fault

Details

Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 132

 

Geoteh. meh. 2017, 132, 17-26

TECHNOLOGY OF ROOF BOLTING OF MINE WORKING ATCROSSING OF GEOLOGICAL FAULT

¹Krukovskyi O.P., ¹Krukovska V.V.

¹IGTM NAS of Ukraine

UDC 622.267.5

Abstract. Areas of intersection of mine workings and zones of geological fault are dangerous for roof rocks fall, water and gas inrush. To strengthen the rock and ensure the stability of the mine working, it is proposed to use reinforced anchoring schemes. The results of the numerical simulation of the rocks stress state around the mine with the frame and anchor support in zone of geological fault influence are given in this article. It is shown, that the use of the roof bolting in the zone of tectonic disturbance significantly reduces the region of high variability of components of the principal stress tensor and the zone of inelastic deformations around the mine working. The obtained distributions of geomechanical parameters condition a decrease in the permeability of the roof rocks and a restriction of the water and gas filtration into the mine. The use of reinforced anchoring schemes allows to preserve even a fractured, block-divided rock in a stable state. A method for two-stage reinforcement of the roof bolting during the transition of a geological fault has been developed. The use of this method ensures a gradual increase in the monolithic nature of the enclosing rocks, a significant reduction in the risk of collapse of the roof rocks and water and gas inrush, contributes to an increase in the stability of mining in the zone of tectonic fault.

Keywords: roof bolting, geological faults, stress state of coal-rock mass, numerical simulation

 

REFERENCES

1. Vynogradov, V.V. and Krukovskyi, O.P. (2007), ―Modeling of the roof bolting with a heterogeneous structure of the mine roof‖, Tezy dopovidey Mizhnarodnoy naukovo-technichnoy konferentsii pamyati aka[1]demika NAN Ukrainy V.I. Mossakobskogo [Abstracts of the International Scientific and Technical Conference for Memory of Academician of the National Academy of Sciences of Ukraine V.I. Mossakovsky], Aktualnye problem sutsilnogo seredovyshcha i mitsnosti konstruktsiy [Actual problems of continuum mechanics and durability of structures], Dnipropetrovsk, Ukraine, pp. 334-336,.

2. Baklashov, I.V. and Kartoziya, B.A. (1984), Mekhanika podzemnykh sooruzheniy i konstruktsiy krepey [Mechanics of underground structures and structures of supports], Nedra, Moscow, USSR.

3. Shashenko, A.N., Pustovoytenko, V.P. and Sdvizhkova, E.A. (2016), Geomekhanika [Geomechanics], Novyiy druk, Kiev, Ukraine.

4. Zienkiewicz, O.C. and Taylor, R.L. (2000), ―The finite element method‖, Butterworth-Heinemann, Boston, USA.

5. Hutton, D.V. (2004), ―Fundamentals of Finite Element Analysis‖, McGraw-Hill, Canada.

6. Krukovskyi, O.P., Krukovska, V.V. and Vynogradov, U.O. (2017), ―Mathematical modelling of unsteady water filtration in anchored mine opening‖, Mining of Mineral Deposits, no. 11(2), pp. 21-27.

7. Krukovska, V.V. (2015) , ―Simulation of coupled processes that occur in coal-rock massif during mining operations‖, Geo-Technical Mechanics, no. 121, pp. 48-99.

8. Krukovskyi, O.P. (2012), ―The scientific basis of technology support-anchor fastening of mining workings of coal mines‖, D.Sc. Thesis, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine, Dnipropetrovsk, Ukraine.

9. Bulat, A.F., Krukovskiy, O.P., Barabash, M.V. et.al., M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (2017), Sposib ankernogo kriplennya girnychoy vyrobky pry perekhodi geologichnogo porushennya [Method of anchoring the mine workings during the transition of geological disturbances], State of Register of Patents of Ukraine, Kiev, UA, Pat. № 114570.

10. Ministry of coal industry of Ukraine (2008), 10.1.05411357. 010:2008: Systema zabezpechennya nadiynogo ta bezpechnogo funktsionuvannya girnychykh vyrobok iz ankernym kriplennyam [10.1.05411357. 010:2008: System to provide reliable and safe operation of the mine workings with roof bolting. The general technical requirements], Ministry of coal industry of Ukraine, Kiev, Ukraine.

11. Krukovskyi, O. (2016), ―Technology of setting the bearing-bolt supports in the Ukrainian mines‖, The 2016 China-Ukraine Forum on Science and Technology, China, HIT, Harbin, pp. 105-107.

12. Razumov, E.A. and Pozolotin, A.S. (2010), ―The use of deep anchor rope anchors during the anchoring of underground mine workings‖, Ugol Kuzbassa, no. 6, pp. 60-61

 

About the authors

Krukovskyi Olexandr Petrovych, Doctor of Technical Sciences (D. Sc.), Senior Researcher, Deputy Director of the institute, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Krukovska Victoriya Victorivna, Doctor of Technical Sciences (D. Sc.), Senior Researcher, Senior Researcher in Department of Control of Dynamic Demonstrations of Rock Pressure, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

• < Prev
• Next >