Substantiating the optimal type of mine working fastening based on mathematical modeling of the stress condition of underground structures
Обґрунтування оптимального виду кріплення гірничих виробок на основі математичного моделювання напруженого стану підземних конструкцій
Matayev A.K. Lozynskyi V.H. Musin A. Abdrashev R.M. Kuantay A.S. Kuandykova A.N.
2021Natsionalnyi Hirnychyi Universytet
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu
2021#2021Issue 357 - 63 pp.
Purpose. Predicting the formation of a stressstrain state (SSS) in the rock mass within the boundaries of influence of stope operations on the horizon 480 m in axes 20–28 at the 10th Anniversary of Kazakhstan’s Independence (DNK) Mine. Methodology. An engineeringgeological data on the host rocks properties are analyzed based on the international ISRM standard. Numerical modelling of the rock mass stressstrain state and the calculation of the loadbearing capacity of the compound support (roofbolt + shotcrete + mesh) and arch support used at the mine are performed with the help of the RS2 software. This program, based on the Finite Element Method in a twodimensional formulation, makes it possible to take into account a significant number of factors influencing the rock mass state. Findings. The calculations performed indicate that the support resistance is incommensurably low in comparison with the values of the initial stress field components in the rock mass. In such conditions, it may be more effective to strengthen the mass in the vicinity of mine working than setting more frames or using more massive support profiles. Originality. The paper presents the results of mathematical modeling and calculation of the stressstrain state of the underground “supporting – aquifer rock mass” structures developed for complex miningandgeological and geomechanical conditions of driving, supporting and operating mine workings on deep horizons of the mines at Donskoy Ore Mining and Processing Plant. Based on the performed research, the preliminary (advanced) strengthening of the border rock mass in the zone of inelastic (destructive) deformations has been substantiated, as a priority method to control the stability of mine workings. Practical value. The research results can be used when creating a geomechanical model of the field and designing stable parameters of mine working support.
Frame support , Mine , Mine working fastening , Stress-strain state , Zone of inelastic deformations
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Karaganda Technical University, Karaganda, Kazakhstan
Geological Concern “Geobit”, Chrzanow, Poland
Aktobe Regional University named after K. Zhubanov, Aktobe, Kazakhstan
Karaganda Technical University
Geological Concern “Geobit”
Aktobe Regional University named after K. Zhubanov
10 лет помогаем публиковать статьи Международный издатель
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