New techniques and technologies in thin coal seam exploitation

Front Cover......Page 1
Table of Contents......Page 6
Preface......Page 10
PLOW TECHNOLOGY AND ITS PERSPECTIVES......Page 12
Plow Technology – History and Today‘s State-of-the-Art......Page 14
Plough Technique at LW Bogdanka S.A. – Present State and Prospects of Development......Page 30
Operational Experiences of Automated Plow Systems in Tiefa, China......Page 42
Past Experiences and Further Expectations with Regard to Application of Plow Technology at Jastrzębska Spólka Węglowa S.A.......Page 50
Efficiency Optimization of Plow Systems Through the Precise Planning of New and Comprehensive Enhancement of Operating Longwalls......Page 58
Plough Longwall Operations under Challenging Geological Conditions......Page 68
Experience with Plow Equipment at OKD......Page 82
Application of Plow Mining in Ukraine......Page 88
Chains – Boon or Bane for Modern Plow Technology?......Page 98
Power Supply, Control and Automation Systems of the High-Performance Plough Systems Based on the Example of LW Bogdanka S.A.......Page 108
Determination of Cuttability of Coal Seams and the Surrounding Rocks in Underground Conditions by Means of a Device Designed at GIG......Page 122
Mining of Thin Hard Coal Seams in the Mines Belonging to Katowicki Holding Węglowy Using Shearer Longwall System......Page 132
Operational Experiences with Automated Plow Systems at the Pinnacle Mine in the US......Page 140
CONSTRUCTION AND MAINTENANCE OF OPENING-OUT HEADINGS FOR PLOW LONGWALLS......Page 148
Planning of Galleries for High Performance Longwall Production in Thin Coal Seams......Page 150
Selected Methods of Forecasting Gate Roads Deformation......Page 162
Evolution of the Methods of Maintaining Longwall Galleries in the LW Bogdanka S.A. Mine......Page 170
Maintaining Longwall Headings in the Mines of JSW S.A.......Page 184
Modern Methods of Designing Supports of Excavations for Plow Longwalls......Page 194
The Practicalities of Optimizing Automated Longwall Plough Systems under the Conditions Prevailing at LW \"Bogdanka\" S.A.Mine – Special Longwall Cavity Lining and Output Self-Loading System at the Longwall-Heading Crossing......Page 206
Prototype of Temporary Mechanized Mine Roadway Support of the Dog Headings......Page 214
Headgate Deformation Characteristic during Plow Exploitation of the 1/VI Longwall Face in 385/2 Seam in LW \"Bogdanka\" Mine......Page 224
Assessment of Powered Support Loadings in Plow and Shearer Longwalls in Regard to the Pressure Measurements in Props......Page 234
Maintaining of the Headgate Behind the Exploitation Face in Difficult Geological and Mining Conditions in LW \"Bogdanka\" Mine......Page 246
Design of Bolting Support for Maintenance of Longwall Headings for Plough Longwalls......Page 262
Construction and Maintenance of Longwall Galleries for Plough Longwalls in the Mine of Lubelski Węgiel Bogdanka S.A.......Page 274
MR620 Roadheader Offers Opportunity for Improvement of Drift Driving Efficiency......Page 286
Prospects of Using the MR 620 Roadheader with Advanced Mechanical Bolting System in \"Bogdanka\" Mine......Page 302
„Lubin“ Mine Experiences in Driving Heading Excavations with Sandvik Mining and Construction\'s MH-620 Heading Machine......Page 310
New Fire-Resistant Hydraulic Fluids Type HFA for Mining Use – Critical Analysis......Page 318