3Rational Location and Support Technology of Mining Gateway in Seam with Ultra Closed Distance to Above Seam10-13,17
4Practices on Hydraulic Powered Support Selection and Holding Mining Technology Applied to Seam with Extreme Broken Roof and Soft Coal14-17
6Study on Micro Deformation Features of Overburden Strata Above Longwall Coal Mining Face Under Goaf of Room and Pillar Mining23-25,29
7Key Technology for Fully Mechanized Top Coal Caving Mining in Thick Seam Passing Through Small Mine Goaf with Backfill30-33,36
9Determination on Rational Location of Two Gateways in Coal Mining Face Under Goaf with Ultra Short Distance to Mining Seam37-41
13Study on Isothermal Adsorption/Desorption Experiment Method of Raw Coal Under the Condition of Surrounding Pressure52-55
14Mechanism Analysis on Concentrated Stress in Front of Mining Face Moving Forward Occurred by Water Injection in Seam56-59,48
16Study on Measurement and Calculation of Critical Surface Tension of Wetting Coal with Water64-66,107
17Comprehensive Gas Prevention and Control Technology of Fully Mechanized Gateway Driving Face in Seam with Coal and Gas Outburst67-70,74
20Reconstruction of Belt Conveyor Driving Head Chamber and Research ＆ Development on Long-Distance Unloading Boom78-81
