Mining of Mineral Deposits

ISSN 2415-3443 (Online)

ISSN 2415-3435 (Print)

Flag Counter

Numerical methods of geomechanics tasks solution during coal deposits’ development

V. Bondarenko1, M. Hardygora2, H. Symanovych1, V. Sotskov1, V. Snihur3

1Underground Mining Department, National Mining University, Dnipropetrovsk, Ukraine

2Faculty of Geoengineering, Mining and Geology, Wroclaw University of Technology, Wroclaw, Poland

3MA “Ternivske” PJSC “DTEK Pavlohradvuhillia”, Pavlohrad, Ukraine


Min. miner. depos. 2016, 10(3):1-12


https://doi.org/10.15407/mining10.03.001

Full text (PDF)


      ABSTRACT

      Purpose. Generalization of numerical modeling of geomechanical processes in the vicinity of mine workings by finite elements method and making recommendations for substantiation of suitable construction and behavior of rock massif physical model.

      Methods. Software packages SolidWorks Simulation (COSMOS/М) and ANSYS are used for geomechanical tasks solution.

      Findings. Solutions of geomechanical tasks dealing with topical issues of estimating stress-strain state of rock massif around underground workings of different functions are given. Data on the rock massif stress-strain state are received and recommendations on adequate and authentic reflection of its structural peculiarities (stratification and fracturing) are made. Physical model of rock condition (elastic, elastic-plastic, rheological diagrams and complete diagram of deformation taking into account weakening and fracturing) is presented.

      Originality. New data about the mechanism of movement processes of coal-bearing massif around mine workings considering stratification and cracks content, limit and out-of-limit deflection state in separate areas, and also the impact of rheological rock properties are received.

      Practical implications. Complex of geomechanical tasks solutions allow to increase credibility of rock pressure manifestations prediction and substantiate technical solutions for effective and safe operations at coal mines.

      Keywords: rock massif , underground working, finite elements method, stresses, deformations, stratification, cracks content, physical model, rock pressure


      REFERENCES

Dychkovskiy, R., & Bondarenko, V. (2006). Methods of Extraction of Thin and Rather Thin Coal Seams in the Works of the Scientists of the Underground Mining Faculty (National Mining University). In International Mining Forum 2006: New Technological Solutions in Underground Mining, (pp. 21-25). Cracow: Taylor & Francis.
https://doi.org/10.1201/noe0415401173.ch3

Griadushchiy, Y., Korz, P., Koval, O., Bondarenko, V., & Dychkovskiy, R. (2007). Advanced Experience and Direction of Mining of Thin Coal Seams in Ukraine. In International Mining Forum 2007: Technical, Technological and Economical Aspects of Thin-Seams Coal Mining, (pp. 2-7). Cracow: Taylor & Francis.
https://doi.org/10.1201/noe0415436700.ch1

Kovalevska, I. (2006). Minimizing Coal Losses When Extracting Thin Coal Seams with the Use of Auger Mining Technologies. In International Mining Forum 2006: New Technological Solutions in Underground Mining, (pp. 27-34). Cracow: Taylor & Francis
https://doi.org/10.1201/noe0415401173.ch4

Gallager, R. (1984). Metod konechnykh elementov. Moskva: Mir.

Garg, P., & Jaiswal, A. (2015). Estimation of Modulus of the Caved Rock for Underground Coal Mines by Back Analysis using Numerical Modelling. Journal of The Institution of Engineers (India), 1-5.
https://doi.org/10.1007/s40033-015-0097-1

Kovalevska, I., Illiashov, M., Fomychov, V., & Chervatuk, V. (2012). The formation of the finite-element model of the system “undermined massif – support of stope”. Geomechanical Processes During Underground Mining, 73-79.
https://doi.org/10.1201/b13157-13

Kuznecov, G., Ardashev, K., & Filatov, N. (1987). Metody i sredstva resheniya zadach gornoj geomekhaniki. Moskva: Nedra.

Manoj, K. (2010). Design of support system for bord and pillar workings. Thesis for the degree of bachelor of technology in mining engineering.

Matvienko, Yu. (2006). Modeli i kriterii mekhaniki razrusheniya. Moskva: Fizmatlit.

Prusek, S. (2010). Review of support systems and methods for prediction of gateroads deformation. New Techniques and Technologies in Mining, 25-35.
https://doi.org/10.1201/b11329-6

Samarskiy, A. (1989). Chislennye metody. Moskva: Nauka.

Sekulovich, M. (1993). Metod konechnykh elementov. Moskva: Strojizdat.

Shi, L., Liu, Y., & Wang, S. (2015). Overburden failure height and fissure evolution characteristics of deep buried, extra thick coal seam and fully-mechanized caving mining of china. Proceedings of the 2015 International Conference on Water Resources and Environment (Beijing, 25-28 July 2015), 207-216.
https://doi.org/10.1201/b19079-36

Symanovych, G., Ganushevych, K., & Chervatyuk, V. (2010). Researches of influence of depth of in-seam working on displacement field of rocks in its vicinity. New Techniques and Technologies in Mining, 121-125.
https://doi.org/10.1201/b11329-20

Yu, H., Kong, L., Niu, Z., Zhu, S., & Jing, D. (2013). Numerical Simulation of Bolt-Mesh-Anchor Support Technology at Soft Rock Roadway. Advanced Materials Research, (868), 251-254.
https://doi.org/10.4028/www.scientific.net/amr.868.251

Zenkevich, O., & Morgan, K. (1986). Konechnye ehlementy i approksimaciya. Moskva: Mir.

Zhang, K., Zhang, G., Hou, R., Wu, Y., & Zhou, H. (2014). Stress Evolution in Roadway Rock Bolts During Mining in a Fully Mechanized Longwall Face, and an Evaluation of Rock Bolt Support Design. Rock Mechanics and Rock Engineering, 48(1), 333-344.
https://doi.org/10.1007/s00603-014-0546-4

Zienkiewicz, O., Taylor, R., & Zhu, J. (2005). Adaptive finite element refinement. The Finite Element Method Set, 500-524.
https://doi.org/10.1016/b978-075066431-8.50182-x

Лицензия Creative Commons