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dc.contributor.authorPaterson, John Hunteren
dc.date.accessioned2019-02-15T14:16:03Z
dc.date.available2019-02-15T14:16:03Z
dc.date.issued1950
dc.identifier.urihttp://hdl.handle.net/1842/33479
dc.description.abstracten
dc.description.abstractThis thesis records the investigation into the possibilities of the mechanisation of underground stowage of the goaf, with special reference to mining conditions in this country, and is the continuation of several years' practical research conducted in India on hydraulic systems of stowing sand.en
dc.description.abstractSince the inception of this work three years ago, the subject has received increased attention from mining engineers. It is realised that the continued development of mechanised coal getting is dependent upon the successful mechanisation of the other operations in and around the coal face.en
dc.description.abstractDEVELOPMENT IN MINING TECHNIQUE: GENERAL CONSIDERATIONS 7. TIE EFFECT OF COAL EXTRACTION ON STRATA (a) SUBSIDENCE: (i) Introduction . . 12. (ii) Physical Aspects 13. (iii) Economic Aspects 16. (b) SYSTEMS OF STRATA CONTROL (i ) The Caving System 18. (ii ) Strip Packing. . 18. (iii) Solid Stowing. . 18. (c) CONTINUOUS MINING CONSIDERATIONS. . 20. GENERAL PREAMBLE ON THE NECESSITY FOR MECHANISED STOWING (a) INTRODUCTORY 23. (b) FACTORS INFLUENCING THE INTRODUCTION OF POWER STOWING IN GREAT BRITAIN. 27. MINING LAYOUT FOR POWER STOWING (a) HORIZON SYSTEM OF MINING 30. (b) METHODS OF WORKING 32. STOWING MATERIALS (a) INTRODUCTION 47 (b) NATURE OF STOWING MATERIAL: 49 (i) Composition. . . 49. (ii) Size Analysis. . 50. (iii) Shape 54 (c) COMPRESSIBILITY OF STOWING MATERIAL: (i) Void Tests . . . 63. (ii) Compression Tests 71. MATERIAL HANDLING (a) PREPARATION AND SUPPLY OF STOWING MATERIAL 83. (b) TRANSPORT AND FEED ARRANGEMENTS: 88 (i) Pneumatic Stowing . . 88. (ii) Mechanical Stowing. . 90. STOWING PIPES (a) INTRODUCTION 94. (b) PIPE DESIGN: 95. (i) Material 95 (ii) Dimensions 96. (iii) Joints and Bends. . . 98. (c) WEAR IN PIPES: (i) General 102. (ii) Flushing, Blasting and Impact Tests 103. (iii) Wear due to Friction and Impact 107. (d) PRACTICAL PERFORMANCE: (i) Sand-Water Mixtures . . 110. (ii) Air-Material Mixtures . 111. (iii) Pipe Life and Tonnage Handled 112. (e) CONCLUSIONS 115. SURVEY OF STOWING PLANT (a) HYDRAULIC: (i) History and Development 117. (ii) Modern Plant & Practice 119. (b) PNEUMATIC: (i) History and Development 123. (ii) Modern Plant . 124. (iii) Power Consumption . . . 129. (c) MECHANICAL: (i) History and Development 131. (ii) Modern Plant 136. (iii) Theoretical Considerations in New Designs. . . . 139. DESIGN OF INBYE AIR COMPRESSOR (a) COMPRESSOR DESIGN: (i) General 144. (ii) Blowing Pressure . . 145. (iii) Air Consumption. . . 145. (iv) General Specification 146. (b) DESIGN OF A SINGLE STAGE RECIPROCATING AIR COMPRESSOR FOR PNEUMATIC STOWING IN MINES: (i) Practical Design Data:- 148 Capacity . . . Working Pressure Drive Cooling Dimensions Air temperatures (ii) General Considerations 148. (iii) Speed 149. (iv) Horse Power 149. (v) Design of Electric Motor 150. (vi) Piston Stroke and Piston Speed . . . . 151. (vii) Cylinder Diameter and Number of Cylinders . 151. (viii) Arrangement of Cylinders 152. (ix) Crank Arrangements . . 152. (x) Cooling Water 15 (xi) Air Receiver 15. (xii) An Inlet Filter. . . 158. ( c ) GENERAL DESCRIPTION OF PROPOSED COMPRESSOR 160. THE ECONOMIC ASPECT OF POWER STOWING (a) GENERAL ECONOMIC CONSIDERATIONS. . 164. (b) LABOUR AND MANPOWER 166. (c) PLANT (i) Capital Cost 173. (ii) Depreciation 173. (d) POWER COSTS 176. (e) OVERALL STOWING COSTS . 177. (f) CONCLUSIONS 180. PRESENT APPLICATION AND FUTURE TRENDS IN POWER STOWING. PRESENT APPLICATION AND FUTURE TRENDS IN POWER STOWIING (a) PRESENT APPLICATIONS 184. (b) FUTURE TRENDS 187 . CONCLUSIONS 189.en
dc.publisherThe University of Edinburghen
dc.relation.ispartofAnnexe Thesis Digitisation Project 2019 Block 22en
dc.relation.isreferencedbyen
dc.titleAn investigation into the possibilities of mechanised stowing in British collieriesen
dc.typeThesis or Dissertationen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD Doctor of Philosophyen


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