Coal Mine Structures

ISBN-13: 9789401086431 / Angielski / Miękka / 2011 / 320 str.

I.W. Farmer

Opis

Coal Mine Structures is based on a six-year study, carried out at the University of Newcastle upon Tyne between 1976 and 1982 and financed by the National Coal Board and the European Coal and Steel Community (Projects 7220 - ACj806 and 7220 - ACj814), into the behaviour of under ground openings in British coal mines. The original work has been expanded to include other relevant British and international data. How ever, it remains, deliberately, a personal view based on a specific - albeit broad - research programme. It does not pretend to be a complete description of the behaviour of shafts, tunnels, rooms, pillars and long wall excavations. Nor does it set out to provide a manual for design. The specific aim is to show, often through consideration of quite detailed laboratory and field data, how the observed performance of some under ground structures during mining, can be explained by the deformation characteristics of the rocks which surround them. The work is based on observatiollB by many engineers working for the National Coal Board's Mining Research and Development Establishment, and by research associates and postgraduate students at the University of Newcastle upon Tyne. I am grateful to them all, but I am particularly indebted to Dr A. H. Wilson and Mr M. J. Bell of the National Coal Board, to Dr P. F. R. Altounyan, Dr P. Garritty, Dr P. Holmes, and Dr P. D. Shelton formerly of the University of Newcastle upon Tyne, to Dr R. N."

Spis treści

1 Behaviour of Coal Measures rocks.- 1.1 Coal Measures rocks.- 1.2 Deformation characteristics of Coal Measures rocks.- 1.3 A general description of rock deformation.- 1.4 Deformation of seatearths.- 1.5 Shear zones.- 1.6 Faults, joints and cleat.- 2 Design of rooms and pillars.- 2.1 Stresses acting on pillars.- 2.2 Stress distribution in pillars.- 2.3 Strength of pillars.- 2.4 Mechanics of pillar breakdown.- 2.5 Design of pillars.- 2.6 Roof stability — rooms.- 2.7 Support of mine rooms.- 3 Tunnels and drifts.- 3.1 Stress distribution around tunnels.- 3.2 Rock deformation and support.- 3.3 Tunnel supports.- 3.4 Pressures on tunnel supports.- 3.5 Stresses on cast-iron segmental lining.- 4 Shafts and insets.- 4.1 Shaft lining design.- 4.2 Shaft lining behaviour.- 4.3 Inset design.- 4.4 Inset behaviour during construction.- 4.5 Lining behaviour after construction.- 5 Strata deformation above longwall excavations.- 5.1 Strata deformation — case histories.- 5.2 Mechanics of strata deformation.- 5.3 Vertical settlement and subsidence.- 5.4 Concepts of caveability.- 5.5 Water flow induced by strata deformation.- 6 Access roadways and roadside packs.- 6.1 Access roadway deformation.- 6.2 Compression of pack materials.- 6.3 Effect of proximate geology.- 6.4 Prediction of roadway deformation.- 7 Coal face strata deformation and support.- 7.1 Roof and face stability.- 7.2 Face roof supports.- 7.3 Design of face supports.- 7.4 Face support setting pressures.- 7.5 Setting pressures and roof stability.- 8 Bursts and instability.- 8.1 Rockbursts in coal mines.- 8.2 Outbursts in coal.- 8.3 Interseam interaction.- 8.4 Roof collapse during caving.- References.- Author index.