Justification of the stress-strain state’s parameters of the mine workings contours depending on the influencing factors

V.F. Demin; V.V. Zhurov

doi:10.31643/2023/6445.03

Authors

V.F. Demin Abylkas Saginov Karaganda Technical University
V.V. Zhurov Abylkas Saginov Karaganda Technical University

DOI:

https://doi.org/10.31643/2023/6445.03

Keywords:

massif, mine development, stress-strain state, stress, anchoring.

Abstract

The complication of mining and geological conditions is associated with the involvement in the development of areas and entire deposits with complex tectonics, an increase in the depth of development, the manifestation of dangerous dynamic effects of rock pressure, which necessitates the improvement of methods, systems, methods and means of supporting mine workings, as well as improving the quality of materials used for support. Mining and geological factors affecting the use of mining support include: the depth of occurrence, which determines the magnitude of the vertical and horizontal components of the rock pressure; layer thickness, developed deposit; bed angle; properties of the host rocks, structure and physical and mechanical properties of rocks and minerals. The paper presents the conduction of the analytical modelling of the rock mass stress-strain state around the active mine workings using the ANSYS software with the assessment of the influence of its cross-section shape and the angle of the coal seam fall on the value of the maximum stresses arising in the rock mass when the workings are supported with the anchoring support depending on the thickness of the easily collapsible rock layer at different lengths of anchoring.

Downloads

Download data is not yet available.

Author Biographies

V.F. Demin, Abylkas Saginov Karaganda Technical University

Doctor of Technical Sciences, Professor, Abylkas Saginov Karaganda Technical University, Nursultan Nazarbayev Ave., 56, Karaganda, Kazakhstan

V.V. Zhurov, Abylkas Saginov Karaganda Technical University

Candidate of Engineering Sciences, acting associate professor of Higher Mathematics department, Abylkas Saginov Karaganda Technical University, Nursultan Nazarbayev Ave., 56, Karaganda, Kazakhstan.

References

Rozenbaum MA, Demekhin DN. Opredeleniye deformatsionnykh kriteriyev ustoychivosti porod krovli i ankernoy krepi [Determination of the deformation criteria for the stability of roof rocks and anchor support]. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh = Physicotechnical problems of minerals development. 2014;2:82-87. (in Russ.).

Otraslevaya instruktsiya po primeneniyu ramnykh i ankernykh krepey v podgotovitelnykh vyrabotkakh ugolnykh i slantsevykh shakht [Branch instruction on the use of frame and anchor bolts in the preparatory workings of coal and shalemines]. IGDthem. A.A.Scochinsky, Moscow,1985.(in Russ.).

Ruppel U, OpoloniK. Features of the use of anchor support on high-performance production in the aspect of international comparison.Glukauf. September, 2000;2(3):31-37.

DaipalVSh, Brandari S, Prasat CD. The choice of technology and economically optimal roof anchoring system for the implementation of developments in the coal mines of scientific approaches. Cole International. 2002;12:10-17.

Walker S. The system of fixing the mine workings. World Coal.August, 2003:17-22.

ShaikhovaGS. Еxplanationof the Cluster Structures Melting Mechanism and Their Influence on the Molten State’s Physical and Chemical Nature. Kompleksnoe Ispolzovanie Mineralnogo Syra= Complex Use of Mineral Resources. 2021;1(316):62-68. https://doi.org/10.31643/2021/6445.08

FirhouseR, ArentzA. A passage of a rectangular section drift with an anchor support in zones of increased rock pressure.Glukauf. 2001;11:4-12.

Karr F. Recent innovations in the anchoring of rocks at mines of the state coal management of Great Britain.Reports at the symposium on anchorage. London.1984:268-281.

Ulrich L. Design basis of mining pressure control with combined support in reservoir drifts. Glukauf, March, 2002:16-20.

Lushnikov VN, Eremenko VA, Sandy MP, Kosyreva MA. Vybor ankernoy krepi dlya vyrabotok. proydennykh v shakhtakh. podverzhennykh gornym udaram[The choice of anchor support for workings, traversed in mines prone to mountain impacts].Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh = Physicotechnical problems of minerals development. 2017;3:86-95.(in Russ.).

Trushko VL, Protosenya AG, Matveev PF. and othersGeomekhanika massivov i dinamika vyrabotok glubokikh gorizontov[Geomechanics of arrays and dynamics of developments of deep horizons]. St. Petersburg Mining Institute, St. Petersburg, 2000 (in Russ.).

Zhurov V.V.Sovershenstvovaniye metodiki rascheta parametrov krepleniya vyrabotok s uchetom gornotekhnologicheskikh faktorov[Perfection of a technique of calculation of parametres of fastening of developments with the account of mining technological factors]. The dissertation on competition of a scientific degree of the candidate of engineering science. KSTU,Karaganda, 2010 (in Russ.).

Demin VV. The choice of the construction of the support for fixing the rocks of the mine workings. In: RUDN university,organizer. Proceedings of the sixth international conference "Resource-reproducing, low-waste and environmental protection technologies of subsoil development".Moscow -Karaganda.2007;121-123.

Tutanov SK, Tutanova MS. Accounting for creep of the rock mass around the sides of the quarry. Kompleksnoe Ispolzovanie Mineralnogo Syra= Complex Use of Mineral Resources. 2022;322(3):74-78. https://doi.org/10.31643/2022/6445.31

Demin WF, Demina T I, Kaynazarov A S, KaynazarovaA S. Evaluation of the workings technological schemes effectiveness to increase the stability of their contours.Sustainable Development of Mountain Territories. 2018;10(4):606-616.

Gorbunov MS, Gorbunov IS, Demin VV. Geomechanical processes in host rocks during excavation workings.Proc. scientific-practical conference "Actual problems of the mining and metallurgical complex of Kazakhstan",Karaganda. 2007;110-113.

Demin VV. Investigation of technological parameters of the use of steel-polymer anchors in the mines of the Karaganda basin. Scientific and technical support of mining. Proceedings of the DGP "Mining Institute.D. Kunaev".Almaty, Kazakhstan.2007;74:179-185.

Tutanov SK, Tutanov MS, Tutanova MS. A mathematical model for determining the influence of factors on the stability of pillars and cameras.Kompleksnoe Ispolzovanie Mineralnogo Syra=Complex Use of Mineral Resources.2020;3(314):15-21. https://doi.org/10.31643/2020/6445.22

Diomin VF,Khalikova ER,Diomina TV, Zhurov VV.Studying coal seam bedding tectonic breach impact on supporting parameters of mine workings with roof bolting.Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu.2019;5:16-21. https://doi.org/10.29202/nvngu/2019-5/5

Q Ye W jun Wang, GWang, and Zzhen Jia.Numerical simulation on tendency mining fracture evolution characteristics of overlying strata and coal seams above working face with large inclination angle and mining depth.Arabian Journal of Geosciences. 2017;10(4). https://doi.org/10.1007/s12517-017-2856-9.

Barton N. Some new Q-value correlations to assist in site characterisationand tunnel design. International Journal of Rock Mechanics and Mining Sciences. 2002; 39(2):185-216. https://doi.org/10.1016/S1365-1609(02)00011-4