Geomechanics of Mine Workings Support Systems: 1st Edition (Hardback) book cover

Geomechanics of Mine Workings Support Systems

1st Edition

Edited by Volodymyr Bondarenko, Iryna Kovalevska, Hennadiy Symanovych, Mykhaylo Barabash, Oleksandr Vivcharenko

CRC Press

231 pages

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Hardback: 9780815393986
pub: 2018-02-08
$159.95
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Description

The book presents an objective and adequate reflection of the geomechanical loading processes of elements of various types of mine workings support systems, including modern designs of roof bolts and compressible frame-and-bolt supports. Calculations of the interaction processes of the frame, roof bolt and frame-and-bolt supports with the rock massif are performed by means of modern computer programs using methods of computational experiment. New methods for calculating the rational parameters for supporting mine workings and roof bolt elements on the basis of the established and mathematically described regularities of the connection between the parameters of supporting means and the geomechanical factors of workings maintenance have been developed.

Table of Contents

Introduction

Chapter 1. Geomechanics of roof bolt and frame mine workings' supports interaction in Unified Load-Bearing System

1 Geomechanics of computer modeling the "Laminal Rock Massif – Mine Working Support” system

1.1 The basic principles of computer modeling of geomechanical processes in development workings area

1.2 Substantiation of selecting the mathematical modeling method for geomechanical processes

1.3 Specifics of geomechanics tasks solution by finite element method

1.4 Analysis of the computational experiment technologies

1.5 Algorithm of the computational experiment performance

2 Development and substantiation of geomechanical model of the “Laminal Rock Massif – Mine Working Support” system

2.1 Substantiation of coal-bearing strata structure in district of basic area of stratified development working

2.2 Substantiation of rock mass layers and coal seams mechanical characteristics by the complete diagram of their deformation

2.3 Substantiation of geomechanical model sizes of the “laminal rock massif – mine working support” system

2.4 Model development of frame support of basic in-seam working

2.5 Testing of model adequacy to real object

Conclusions

3 Advancement and substantiation of roof bolts and frames mechanical bonds in unified load-bearing structure of frame-and-bolt support with selfregulated load transfer on bearing elements

3.1 Efficiency of spatial yielding coupling between roof bolts and frame

3.2 Substantiation of frame support load-bearing capacity increase principle by means of roof bolts

Conclusions

4 Research and analysis of strain-stress state of the “Laminal Rock Massif – Mine Working Support” system in case of absence or presence of mechanical bonds between side roof bolts and frame prop stays

4.1 The stress-strain state system research in case of absence of mechanical bonds between frames and side roof bolts

4.2 The stress-strain state system research in case of mechanical bonds of frames and side roof bolt supports

Conclusions

5 Substantiation, Research and analysis of local models of yielding coupling between bolts and frame. Underground trial

5.1 Local models parameters substantiation

5.2 Research and analysis of a model of roof bolt coupling node with releasable binder

5.3 Research and analysis of a model stress-strain state of releasable binder coupling node with frame prop stay

5.4 Parameters calculation method of frame prop stays yielding coupling with side roof bolts

5.5 Methods and results of conducted underground investigations

Conclusions

Chapter 2. Development, research and parametric optimization of the yielding tubular bolt support

6 Geomechanics of interferences between roof bolt support and rock massif

6.1 Analysis of modern interference theories between rock massif and roof bolt support

6.2 Analysis of theoretical backgrounds in roof bolt support engineering

6.3 The design and technology development of TA1 tubular bolt setting

6.4 Analysis of roof bolt support parameter calculation method 120

7 Investigation of the “Tubular Work Piece – Rock Massif” system dynamic deformation

7.1 Development and substantiation of analytical model of tubular bolt work-piece deformation by explosive energy

7.2 Determination of explosive charge mass and development of a criterion of the “tubular work-piece – rock massif” system geometrical parameters optimization

7.3 Research of solutions on deformation calculation of the “tubular work-piece – rock massif” system and selection of explosive charge

Conclusions

8 Stress state determination of the “Tubular Bolt TA1 – Rock Massif” system in static interaction with rock sides of a borehole

8.1 Stress state determination of bolt TA1 and host rocks under the “hanging up” scheme

8.2 Stress state determination of tubular bolt and host rocks under the scheme of their joint deformation

9 Development and research of the basic parameters calculation method of tubular bolt TA1 in static interaction with rock walls of a borehole

9.1 Calculation method development of the load-bearing capacity of a tibilar bolt TA1

9.2 Investigation of the stress state of “tubular bolt – rock massif” system and load-bearing capacity of TA1 bolt

9.3 Determination of working section length and TA1 bolt operational characteristic

10 Experimental investigations of tubular bolts TA1

10.1 Method, results and analysis of experimental investigations of the “tubular work-piece – rock massif” system dynamic deformation

10.2 Method, results and analysis of experimental investigations of the “tubular work-piece – rock massif” system static interaction 173

11 Development of parameters calculation method of TA1 tubular bolt

11.1 Parameters calculation of TA1 tubular bolt at solving the direct task

11.2 Parameters calculation of TA1 tubular bolt at solving the inverse task

12 Substantiation of efficiency improvement techniques for soft rocks hardening by roof bolt support

12.1 Analysis of roof bolt support operational modes in soft rocks

12.2 Special aspects of force interaction process of existing tubular bolts structures with soft rocks

Chapter 3. Development, research and parametric optimization of the yielding roof bolt support with elastic joist

13 Hardening of mine workings' border rocks by roof bolts with elastic joist

13.1 Development of a yielding roof bolt structure with elastic spacing joist

13.2 Stress state calculation of the roof bolt elastic joist under axial forces influence

13.3 Stress state analysis of the roof bolt elastic joist

13.4 Calculation of the expanding roof bolt with elastic joist

13.5 Experimental investigations for expanding roof bolt parameters calculation

13.6 Rational parameters selection of roof bolt support setting

13.7 Method of rational parameters selection for the expanding roof bolt with elastic joist

14 Pilot tests of the yielding roof bolt support

14.1 Geological and mining test conditions of the roof bolt support with elastic joist

14.2 Testing of the roof bolts in “Zoria” Mine

14.3 Testing and practical use of the roof bolts in “Yuvileina” Mine

14.4 Testing of the roof bolts in “Miuska” Mine

Conclusions

About the Editors

Volodymyr Bondarenko is the head of the Underground Mining Department at the National Mining University of the Ukraine, he is doctor of technical sciences, Honored scientist, laureate of the state prize of Ukraine in science and technology, author of a scientific discovery in mining, and member of the Society of Mining Professors. His field of activity is solving of educational scientific and technical problems connected with coal and iron ore extraction.

Iryna Kovalevska is professor at the Underground Mining Department at NMU, doctor of technical sciences, laureate of the state prize of the Ukraine in science and technology, and author of a scientific discovery in mining. Her field of activity is geomechanics of strengthening near-the-contour rocks by resource-saving technologies.

Hennadiy Symanovych is professor at the Underground Mining Department at NMU, and doctor of technical sciences. His basic scientific activity is aimed at substantiation of intensification ways of mining operation in coal mines.

Mykhaylo Barabash is Deputy Director for Production of LLC "DTEK Energy". His basic scientific activity is aimed at selection of optimal support systems improving exploitation characteristics as the essential part of increasing rock massif stability.

Oleksandr Vivcharenko is the head of the production department of the coal directorate of LLC "DTEK Energy", and candidate of technical sciences. Fields of activity are substantiating parameters of mine workings stability, improvement of low-cost technologies of the support of development workings and choice of the rational parameters of frame supports and rock bolts.

Subject Categories

BISAC Subject Codes/Headings:
TEC009020
TECHNOLOGY & ENGINEERING / Civil / General
TEC009150
TECHNOLOGY & ENGINEERING / Civil / Soil & Rock