IDENTIFICATION OF PATTERNS OF NONLINEAR DEFORMATION OF ROCKS IN RETINUE OF COAL SEAMS
The article presents the research results of stress-strain state of the coal massif in the zone of influence of several mine workings in adjacent seams. The task is solved by means of detection of laws of nonlinear deformation of rocks at working of retinue of the coal seams, it has allowed to prove an optimum sequence of mining of seams and rational spatiotemporal position of mining workings. At performance of calculations are accepted mining-and-geological and mining conditions the mine «Esaulsky» in Kuzbas.
For solve this problem developed a mathematical model allowing to take into account the nonlinear deformation of rocks during their transition from elastic to a plastic strains. Numerical simulation based on the finite element method was carried out in complex problem-oriented program, which is developed in the system of symbolic mathematics. As a result of computational experiments obtained area of nonlinear deformation during the withdrawal coalface from the mounting chamber. On the basis of numerical analysis of geomechanical condition of the field of research the conclusion is that the technogenic impact on coal massif has resulted in the softening and cracking of rocks above the mined seam, which contributed to the penetration of water from overlying workings. This conclusion is confirmed by the observation of mine.
Keywords
Unloading zone, mathematical model, nonlinear deformation of rocks, stope, series of strata, coal massif, numerical modelling.
Issue number: 10
Year: 2016
ISBN:
UDK: 556.5
DOI:
Authors: Tsvetkov A. B., Pavlova L. D.
About authors: Tsvetkov A.B., Candidate of Technical Sciences,
Assistant Professor, e-mail: atsvet@mail.ru,
Pavlova L.D., Doctor of Technical Sciences, Assistant Professor,
Director of Institute of Fundamental Education,
Head of Chair, e-mail: lara@rdtc.ru,
Siberian State Industrial University,
654007, Novokuznetsk, Russia.
REFERENCES: 1. Fryanov V. N., Pavlova L. D. Sostoyanie i napravlenie razvitiya bezopasnoy tekhnologii podzemnoy ugledobychi (Condition and direction of development of safe technique of underground coal mining), Novosibirsk, Izd-vo SO RAN, 2009, 238 p.
2. Pisarenko G. S., Mozharovskiy N. S. Uravneniya i kraevye zadachi teorii plastichnosti i polzuchesti (Equations and boundary tasks of the theory of plasticity and creep), Kiev, Naukova dumka, 1981, 496 p.
3. Pravila okhrany sooruzheniy i prirodnykh ob”ektov ot vrednogo vliyaniya podzemnykh gornykh razrabotok na ugol’nykh mestorozhdeniyakh (PB 07-269-98) (The rules of protection of buildings and natural objects from harmful influence of underground mining in coal deposits (PB 07-269-98)), Moscow, Federal’nyy gornyy i promyshlennyy nadzor Rossii, 1998, 203 p.
4. Tsvetkov A. B. Nauchnoe obozrenie. 2014, no 8 (Ch. 2), pp. 599–603.
5. Tsvetkov A. B., Pavlova L. D., Fryanov V. N. Gornyy informatsionno-analiticheskiy byulleten’. 2015, no 1, pp. 365–370.
6. Tsvetkov A. B., Pavlova L. D. Naukoemkie tekhnologii razrabotki i ispol’zovaniya mineral’nykh resursov: sbornik nauchnykh statey (High technologies of development and use of mineral resources: a collection of scientific articles), Novokuznetsk, 2015, pp. 121–125.
7. Tsvetkov A. B., Pavlova L. D. 9-aya mezhdunarodna nauchna praktichna konferentsiya, «B”deshcheto v”prosi ot sveta na naukata» (Development of discrete model of a geomechanical condition of coal massif for system of symbolical mathematics), Sofiya, 2013, pp. 21–25.
8. Tsvetkov A. B. Paket programm NDSolver V1.0 dlya matematicheskogo modelirovaniya napryazhenno-deformirovannogo sostoyaniya gazonosnogo geomassiva. Svidetel’stvo o registratsii elektronnogo resursa № 19867 ot 10.01.2014 Ob”edinennyy fond elektronnykh resursov «Nauka i obrazovanie» (NDSolver V1.0 software package for mathematical modeling of stress-strain state of the rock mass containing gas. The certificate on registration of an electronic resource No. 19867 of 10.01.2014 – the Joint fund of the electronic resources «Science and education»).
9. Pavlova L. D., Fryanov V. N. Gornyy informatsionno-analiticheskiy byulleten’. 2008, no 4, pp. 71–76.