Determining the parameters of a natural arch while forming support load of a horizontal roadways
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- Category: Content №2 2021
- Last Updated on 29 April 2021
- Published on 30 November -0001
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Authors:
V.H.Shapova, orcid.org/0000-0003-2993-1311, Dnipro University of Technology, Dnipro, Ukraine, e‑mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
O.V.Solodyankin, orcid.org/0000-0002-0837-6438, Dnipro University of Technology, Dnipro, Ukraine, e‑mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
O.Ye.Hryhoriev, orcid.org/0000-0002-1121-4720,Dnipro University of Technology, Dnipro, Ukraine, e‑mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
O.I.Dubovyk, orcid.org/0000-0001-6627-7457, Dnipro University of Technology, Dnipro, Ukraine, e‑mail: This email address is being protected from spambots. You need JavaScript enabled to view it.; State Enterprise Pervomaiskvuhillia, Hirske, Luhansk Region, Ukraine
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2021, (2): 017 - 025
https://doi.org/10.33271/nvngu/2021-2/017
Abstract:
Purpose. Development of a semiempirical method to identify rock pressure on the support of underground mine roadways as well as substantiation of its efficient use area taking into consideration the depth of the mine roadway, its geometry, and hardness of enclosing rocks.
Methodology. Theoretical studies on geomechanical processes taking place in the neighbourhood of roadways using analytical mathematical methods as well as numerical ones. Analysis of the research results and their generalization are involved.
Findings. Methods to identify load (i.e. rock pressure) on the supporting structures have been developed. The methods are based upon the proposed calculation technique for the rock stability coefficient at the boundary of contact between a collapsing arch of the rock (i.e. fall arch) and undisturbed rock mass, i.e. at the boundary of elastic share of peripheral rock mass, and non-elastic one. A stability coefficient has been proposed in the form of projection on vertical axis of forces holding the rock mass, limited by a fall arch, to projection of shear forces.
Originality. For the first time, an analytical and empirical method to identify natural arch over horizontal and vertical mine roadways has been proposed involving their depth, geometry, parameters of rock strength, and its gravity. The abovementioned is the key distinction of the proposed method from the known semiempirical technique by M.M. Protodyakonov to determine natural arch as well as support load.
Practical value. The findings make it possible to predict stability of horizontal mine roadways using mathematical methods. In this context, the depth, geometry, and hardness of enclosing rocks are taken into consideration.
Keywords: roadway, collapsing arch of the rock, rock pressure, rock strength, holding forces, shear forces
References.
1. Solodyankin, A.V., Martovitsky, A.V., & Smirnov, A.V. (2015). Substantiation of effective solutions of supporting extended workings based on an assessment of geomechanical conditions at Pavlogradugol mine. Naukovedenie, 3(7), 1-14. https://doi.org/10.15862/13TVN315.
2. Nazimko, V., & Zakharova, L. (2017). Cluster behavior of the ground during its irreversible movement. Acta Geodunamica et Geomaterialia, 14(4), 445-462. https://doi.org/10.13168/AG.2017.0025.
3. Solodyankin, A., Hapieiev, S., Vygodin, M., & Yanko, V. (2017). Energy efficient technologies to support mine workings under complicated geomechanical conditions. Advanced Engineering Forum, 25, 35-42. https://doi.org/10.4028/www.scientific.net/AEF.25.35.
4. Shashenko, ., Solodyankin, A., & Gapieiev, S. (2010). Bifurcation model of rock bottom heaving in mine workings, (pp. 71-76). New Techniques and Technologies in Mining. London: CRC Press/Balkema.
5. Grigoriev, O., Tereschuk, R., & Tokar, L. (2015). Assessment of economic efficiency AMS-A (anchor-meshwork-shotcreting) support structure in terms of coal mines. In New Developments in Mining Engineering 2015: Theoretical and Practical Solutions of Mineral Resources Mining, (pp. 85-89). London: Taylor & Francis Group.
6. Sdvyzhkova, O., Babets, D., Kravchenko, K., & Smirnov,A.V. (2015). Rock state assessment at initial stage of longwall mining in terms of poor rocks of Western Donbass. In New Developments in Mining Engineering: Theoretical and Practical Solutions of Mineral Resources Mining, (pp. 65-70). London: Taylor & Francis Group.
7. Yihe, Yu., & Liqiang, M. (2019). Application of Roadway Backfill Mining in Water-Conservation Coal Mining: A Case Study in Northern Shaanxi, China. MDPI, Sustainability, 11(13), 3719. https://doi.org/10.3390/su11133719.
8. Snuparek, R., & Konecny, P. (2010). Stability of roadways in coalmines alias rock mechanics in practice. Journal of Rock Mechanics and Geotechnical Engineering, 2(3), 281-288. https://doi.org/10.3724/SP.J.1235.2010.00281.
9. Gao, H., He, P., Chen, Z., & Li, X. (2019). A Novel Calculation Method of Process Load for Extra-Large Section Tunnels. MDPI, Symmetry, 11, 1228. https://doi.org/10.3390/sym11101228.
10. Li, C., Wang, S., Wang, Y., Cui, F., & Yang, F. (2016). Skewed Pressure Characteristics of Equivalent Load in Double-Arch Tunnel. Journal of Engineering and Technological Sciences, 48(3), 345-358. https://doi.org/10.5614/j.eng.technol.sci.2016.48.3.8.
11. Pengfei, L., Fan, W., Lifeng, F., Huidong, W., & Guowei,M. (2019). Analytical scrutiny of loosening pressure on deep twin-tunnels in rock formations. Tunnelling and Underground Space Technology, 83, 373-380. https://doi.org/10.1016/j.tust.2018.10.007.
12. Li, P.-F., Wang, F., Nie, X., & Zhang, C.P. (2019). Methods for calculating rock pressure of symmetrical multi-arch deep tunnels. Chinese Journal of Geotechnical Engineering. https://doi.org/10.11779/CJGE201609009.
13. Gao, H., He, P., Chen, Z., & Li, X. (2019). Study on a Surrounding Rock Pressure Calculation Method for Super-Large Section Highway Tunnels, China. MDPI, Symmetry, 11, 1133. https://doi.org/10.3390/sym11091133.
14. Song, Y. (2016). Calculation of Surrounding Rock Pressure Based on Pressure Arch Theory. 5th International Conference on Advanced Materials and Computer Science (ICAMCS 2016). Atlantis Press. https://doi.org/10.2991/icamcs-16.2016.59.
15. Huang, J., Zhang, Y., Ouyang, X., & Xu, G. (2019). Lagged settlement in sandy cobble strata and earth pressure on shield tunnel. Mathematical Biosciences and Engineering, 16(6). https://doi.org/10.3934/mbe.2019309.
16. Litvinsky, G.G. (2012). Rock pressure at small and deep of development. Collection of scientific papers DSTU. Alchevsk, 37, 21-28.
17. Wu, X., & Tu, Z. (2017). Research of the Shape of Pressure Arch in Layered Rock Mass Based on the Protodyakonovs Theory. Advances in Engineering Research, 128. 7th International Conference on Manufacturing Science and Engineering (ICMSE 2017), (pp. 250-255). Atlantis Press. https://doi.org/10.2991/icmse-17.2017.45.
18. Zhabko, A.V. (2012). Calculation of loads on the support of horizontal roadways. Bulletin of the Ural State Mining University, 27-28, 72-77.
19. Zhang, C., Han, K., Fang, Q., & Zhang, D. (2014). Functional catastrophe analysis of collapse mechanisms for deep tunnels based on the Hoek-Brown failure criterion. Journal of Zhejiang University-SCIENCE A, 15(9), 723-731. https://doi.org/10.1631/jzus.A1400014.
20. Zheng, Y., & Oui, C. (2016). On the limitations of Protodyakonovs pressure arch theory. Modern Tunnelling Technology, 53(2), 1-8. https://doi.org/10.13807/j.cnki.mtt.2016.02.001.
21. Qiu, C., Zheng, Y., Zhang, Y., Tan, W., & Zhao, S. (2019). Discussion on Classification Method and Criterion for the Deep-buried and Shallow-buried Rock Tunnels. Modern Tunnelling Technology, 56(1), 14-21.
22. Shapoval, V., Shashenko, O., Hapieiev, S., Khalymendyk,O., & Andrieiev, V. (2020). Stability assessment of the slopes and side-hills with account of the excess pressure in the pore liquid. Mining of Mineral Deposits, 14(1), 91-99. https://doi.org/10.33271/mining14.01.091.
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