Combined Roof-Bolting Systems of Mine Workings

The basic principles of geomechanical processes occurring in mine workings during the extraction of minerals are discussed in this monograph. Particular attention is paid to the support system, specifically to the various roof-bolt and frame support designs, and also to the modern means providing resource-saving conditions for ensuring mine workings sustainability. The basic principles of the computing experiment performance at the modelling of geomechanical processes are also presented and the stress-strain state of "rock massif - mine working support" systems are investigated. Finally, the results of field studies are discussed and illustrated. Modern studies are presented in this work, the advanced support systems are introduced and the solution to the problem of low-cost rock pressure control in mine workings is described. Further the unique study in the thin-layer massif of weak rocks is conducted and the technical and economic aspects of mine workings maintenance during rocks heaving are described. The book will be of interest to scientists in research and design organizations in the mining sector, engineers and technological workers in mines, as well as university academics and students.

Volodymyr Bondarenko is the Head of the Department of Mining Engineering and Education at the Dnipro University of Technology, Professor, Doctor of Technical Sciences, Honored Scientist, Laureate of the state prize of Ukraine in science and technology, author of the scientific discovery in mining, and member of Society of Mining Professors. The field of scientific activity is the solution of educational, scientific and technical problems related to coal and iron ore extraction. Iryna Kovalevska is Professor of the Department of Mining Engineering and Education at the Dnipro University of Technology, Doctor of Technical Sciences, Laureate of the state prize of Ukraine in science and technology, and author of the scientific discovery in mining. The field of activity is the mechanics of surrounding rocks strengthening by means of resource-saving technologies. Hennadiy Symanovych is Professor of the Department of Labor Protection and Civil Security at the Dnipro University of Technology, Doctor of Technical Sciences. The basic scientific activity is aimed at the substantiating methods for mining operation intensification at coal enterprises. Mykhaylo Barabash is Director of the Directorate of Coal Mining at LLC "DTEK Energy", Candidate of Technical Sciences (Ph.D). The main activity is aimed at the selection of optimal support systems advancing operational characteristics as an essential part of rock massif stability improvement. Viktor Chervatiuk is Deputy Director of the Directorate of Coal Mining at LLC "DTEK Energy", Candidate of Technical Sciences (Ph.D). Specialist in the field of calculating stress-strain state of multi-parameter geomechanical systems elements during the stoping and preparation works in the rock massif. Oleksandr Husiev is Director of the Colliery Group "Dniprovske" at PJSC "DTEK Pavlohradvuhillia", Candidate of Technical Sciences (Ph.D). The activity fields are substantiation of mine workings stability parameters, the improvement of low-cost technologies for the development of mine workings support and the selection of the frame supports and rock bolts rational parameters. Vasyl Snihur is Director of the Colliery Group "Heroiv Kosmosu" at PJSC "DTEK Pavlohradvuhillia", Candidate of Technical Sciences (Ph.D). Specialist in the study of the stress-strain state of mine workings in the soft rocks thin-bedded massif.

1. Research into stability of reusable in-seam workings when mining thin coal seams; 2. Structural transformations of the rock massif and stability of mine workings under the downward and joint mining of C8l and C9 cola seams; 3. Research into heaving of mine workings bottom when mining the flat-lying seams of the Western Donbas.