Combined roof-bolting systems of mine workings. (2020)

• Record Type: Book
• Further Information: Note: Edited by Volodymyr Bondarenko, Iryna Kovalevska, Hennadiy Symanovych, Mykhaylo Barabash, Viktor Chervatiuk.
• Editors: Bondarenko, Volodymyr; Kovalevs'ka, Iryna; Symanovych, Hennadiy; Barabash, Mykhaĭlo, 1952-; Chervatiuk, Viktor
• Contents: I. RESEARCH INTO STABILITY OF REUSABLE IN-SEAM WORKINGS WHEN MINING THIN COAL SEAMS 1 ANALYSIS OF ROCK PRESSURE MANIFESTATION IN THE PREPARATORY MINE WORKINGS AT THE STRUCTURAL TRANSFORMATION OF ENCLOSING ROCKS BY THE ROOF-BOLT STRENGTHENING; 1.1 Experience of combined roof-bolting systems application for strengthening the roof rocks of mine workings; 1.2 A mechanism for increasing the stability of mine workings by combined roof-bolting systems; 1.3 The interaction of support in mine workings with border rocks under the conditions of areas formation of their limiting state; Conclusions 2 RESEARCH AND ANALYSIS OF THE EXPERIENCE OF THE PREPARATORY MINE WORKINGS REUSE AT YUBILEINA MINE; 2.1 Mining research methodology; 2.2 Analysis of mining research results; Conclusions 3 THE COMPUTATIONAL EXPERIMENT SUBSTANTIATION AND STRESS-STRAIN STATE ANALYSIS OF BORDER ROCKS, AS WELL AS OF THE BASIC FASTENING SYSTEM OF PREPARATORY MINE WORKINGS IN THE ZONE OF STOPE WORKS INFLUENCE; 3.1 Construction of geomechanical models in conducting the computational experiments; 3.2 Analysis of stresses intensity in the border rocks of the preparatory mine working in the bearing pressure zone ahead of the longwall face; 3.3 Research and analysis of the stresses intensity of the basic fastening system in the bearing pressure zone ahead of the longwall face; 3.4 The stress intensity of border rocks in the zones of beginning of protective strip resistance and stabilization of the rock pressure manifestation; 3.5 The stress intensity analysis in basic fastening and protection systems behind the longwall face; Conclusions 4 RESEARCH AND ANALYSIS OF THE STRESS STATE OF THE LOAD-BEARING ELEMENTS IN THE PREPARATORY MINE WORKING “MASSIVE – FRAME – COMBINED ROOF-BOLTING SYSTEM”; 4.1 Stress state of rocks enclosing mine working in the area of stabilization of rock pressure manifestations; 4.2 The stress state of fastening system elements in the preparatory mine working and comparison with the basic variant of its fastening; Conclusions 5 ESTABLISHING AND ANALYZING THE PATTERNS OF GEOMECHANICAL FACTORS INFLUENCE ON THE RESISTANCE OF THE COMBINED ROOF-BOLTING SYSTEM TO ROCK PRESSURE; 5.1 Substantiation of the criterion for assessing the level of the roof-bolts resistance to the rock pressure manifestations; 5.2 The influence of the depth of mine working location; 5.3 Influence of the average calculated rocks resistance to compression of the adjacent massif; 5.4 Influence of the ratio of the average calculated resistance to compression of the immediate roof rocks to its thickness; Conclusion 6 DEVELOPMENT AND SUBSTANTIATION OF THE PARAMETERS CALCULATION OF THE ROOF ROCKS STRENGTHENING BY A COMBINED ROOF-BOLTING SYSTEM IN THE PREPARATORY MINE WORKINGS; 6.1 Substantiation and calculation of the parameters of the resin-grouted roof bolts location in the rocks of mine working arch; 6.2 Substantiation and calculation of strengthening the rocks in the arch of mine working with rope bolts; 6.3 Algorithm for calculating the parameters of the combined roof-bolting system for strengthening the rocks of the arch in the preparatory mine workings; Conclusions 7 THE INFLUENCE OF THE CENTRAL PROP STAYS OF THE STRENGTHENING SUPPORT ON THE FASTENING SYSTEM STRESS-STRAIN STATE OF MINE WORKING; 7.1 Analysis of the operation modes of the central prop stays of the strengthening support in the preparatory mine workings; 7.2 The research of the fastening system stress-strain state of mine working with the yielding prop stay in the strengthening support; Conclusions Synthesis of the research results to Chapter I Chapter II. STRUCTURAL TRANSFORMATIONS OF THE ROCK MASSIF AND STABILITY OF MINE WORKINGS UNDER THE DOWNWARD AND JOINT MINING OF С 8l AND С 9 COAL SEAMS 106 8 GEOMECHANICAL AND METHODICAL ASPECTS OF RESEARCH INTO STABILITY OF THE REUSABLE MINE WORKINGS WHEN OVERWORKING AND UNDERWORKING A PARTING IN SEAMS С 8 l AND С 9; 8.1 Geomechanical peculiarities of C 8l seam mining; 8.2 Development and substantiation of the geomechanical model of the 861 belt entry 9 RESEARCH AND STRESS-STRAIN STATE ANALYSIS OF THE ROCK MASSIF ENCLOSING THE 861 BELT ENTRY AT THE BASIC AND RECOMMENDED SCHEMES OF MAINTAINING; 9.1 Anomalies of the rock pressure manifestations in the rock massif in the vicinity of the 861 belt entry at the basic scheme of maintaining; 9.2 Research and stress-strain state analysis of coal-bearing massif around the 861 belt entry at the recommended scheme of its maintenance 10 RESEARCH AND ANALYSIS OF THE STRESS-STRAIN STATE OF FASTENING AND PROTECTION BASIC SYSTEMS ELEMENTS OF THE 861 BELT ENTRY OF THE SEAM С 8l ; 10.1 Analysis of vertical stresses components; 10.2 Determination of horizontal stresses components 11 RESEARCH AND ANALYSIS OF THE STRESS-STRAIN STATE OF FASTENING AND PROTECTION RECOMMENDED SYSTEMS ELEMENTS FOT MAINTAINING THE 861 BELT ENTRY OF THE SEAM С 8l ; 11.1 Analysis of vertical stresses component; 11.2 Horizontal stresses components distribution; 11.3 Stresses intensity research; 11.4 Recommendations for selecting the parameters of the fastening and protection systems of reused mine workings through the example of mining the 861 longwall face Summarizing the research results to Chapter II Chapter III. RESEARCH INTO HEAVING OF MINE WORKINGS BOTTOM WHEN MINING THE FLAT-LYING SEAMS OF THE WESTERN DONBAS 12 ANALYSIS OF THE PROBLEM OF PREDICTING THE BOTTOM ROCKS HEAVING OF MINE WORKINGS; 12.1 Technical and economical aspects of mine workings maintenance during rocks heaving; 12.2 Analysis of concepts of the mechanism of occurring the bottom rocks heaving and factors affecting its development; 12.3 Analysis of prediction techniques of the bottom rocks heaving in mine workings; 12.4 Structure, purpose and objectives of research in the geological and industrial Western Donbas region 13 CONSTRUCTION OF GEOMECHANICAL MODEL OF THE “MASSIF – IN-SEAM WORKING” SYSTEM; 13.1 Structure of adjacent coal-bearing rock stratum of the mined-out coal seams of the Western Donbas; 13.2 Modeling the soft mine rocks deformation in the vicinity of in-seam working; 13.3 Substantiating parameters of in-seam workings and their support; Conclusions 14 TESTING THE MODEL OF THE GEOMECHANICAL SYSTEM “MASSIVE – IN-SEAM WORKING”; 14.1 The substantiation of parameters of the coal-bearing rock massif; 14.2 Parameters substantiation of the in-seam working and support; Conclusions 195 15 RESEARCH AND ANALYSIS OF INFLUENCE OF STRUCTURE AND PROPERTIES OF THE COAL-BEARING ROCK STRATUM ON THE STRESSSTRAIN STATE OF THE “MASSIF – IN-SEAM WORKING” SYSTEM; 15.1 Substantiation of variants of stress-strain state calculation of “massif – in-seam working” systems and the methodology of conducting the computational experiment; 15.2 Stress-strain state analysis of the bottom rocks in in-seam working; Conclusions 221 16 PECULIARITIES OF THE HEAVING DEVELOPMENT MECHANISM OF THE BOTTOM ROCKS OF IN-SEAM WORKING; Conclusions 17 STUDY OF PATTERNS RELIABILITY OF RELATION OF THE BOTTOM ROCKS STRUCTURE AND PROPERTIES WITH ITS HEAVING; 17.1 Development of a computational experiment technique; 17.2 Establishing the patterns of structure and properties influence of bottom rocks of the coal seam on heaving manifestations in in-seam workings 18 ASSESSING THE STATE OF BOTTOM IN IN-SEAM WORKINGS; 18.1 Construction of regression equations for calculating the value of heaving in the bottom rocks; 18.2 The link of value of the bottom rocks heaving with the depth of mine working location; 18.3 Separation of mining-and-geological conditions according to the nature of heaving development and degree of the bottom rocks stability 19 TECHNIQUE FOR PREDICTING AND MONITORING OF BOTTOM IN IN-SEAM WORKINGS OF THE WESTERN DONBAS MINES; 19.1 General information and calculations algorithm; 19.2 Formation of the initial data base for performing calculations; 19.3 Assessment of the state of bottom rocks and prediction of the value of its heaving; 19.4 An example of a predictive calculating the bottom rocks heaving of in-seam working; Conclusions
• Edition: 1st
• Publisher Details: Boca Raton : CRC Press
• Publication Date: 2020
• Extent: 1 online resource, illustrations (black and white, and colour)
• Subjects: 622.028; Mine roof bolting; Mining engineering
• Languages: English
• ISBNs: 9781000206494; 9781000206470; 9781000206487; 9781003081432
• Related ISBNs: 9780367533304
• Notes: Note: Description based on CIP data; resource not viewed.
• Access Rights: Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK).
• Access Usage: Restricted: Printing from this resource is governed by The Legal Deposit Libraries (Non-Print Works) Regulations (UK) and UK copyright law currently in force.