2Study on Rational Layout of Main Removing Gateway for High Cutting Height Long Coal Mining Face6-8,13
4Study on Width Optimization of Sectional Coal Pillar for Fully Mechanized Coal Mining Face in Shallow Depth Mine14-16
5Analysis and Reinforcement Technology of Mine Rock Roadway Deformation Under Seam Floor with Soft Roof,Soft Coal and Soft Floor17-19,59
7Controlled Blasting Technology for Connection Between Mine Shaft Bottom and Ingate of Mine Auxiliary Shaft24-26
8Performances Features and Research Orientation of Mine High Molecular Grouting Reinforced Material27-29
9Researchment and Application of Comb Type Directional Borehole Drilling Technology in Underground Mine30-34
11Study on Opening and Safety Secondary Mining Technology of Low Slice Firing Zone in Hard Roof and Coal Seam38-41
12Study and Practices on High Temperature Heat Disaster Prevention and Control Technology in Yongchuan Mine42-45
15Fire Extinguishing Technology Based on Surface Borehole Grouting to Seal Mine Roadway for Insulation of Fire Zone52-54
16Effect Analysis on Gas Control with Local High Level Gas Drainage Gateway at Initial Mining Period of Fully Mechanized Top Coal Caving Mining Face55-59
