Coal Science and Technology Articles

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1Chinese Vice Premier Li Lanqing Visits and Inspects China Coal Research Institute1

2Information System of Seam Stability Evaluation in Modernized Coal Mine2-4

3Application and Practices of Controllable Circulating Air in Large Area5-7

4Practices on Soft Rock Mine Roadway Support in Yima Mine Area8-10

5Research and Development of Tubing Belt Conveyer System11-13

6Development of Electric Cable Drawing in and out Device for Water Bunk Cleaner in Coal Mine14-15,13

7Research and Development of In-Mine Coal Gasification Technology16-18,28

8Research and Development of Ash Measurement for Coal Water Mixture19-21

9Application of Bolt Support Technology to Pressure Bump Seam Roadway22-24

10Analysis and Improvement of Production System in Hydraulic Coal Miming Mine25-28

11Repair and Reinforcement Technology with Bolt and Grouting for Cross Point of Larger Cross Section Soft Rock Roadway29-30

12Face Grouting with Small Diameter Bore Holes in Thick Sand Stone for Mine Shaft Sinking31-32,55

13Follow-up Control System of Front Canopy for Hydraulic Powered Support33-34

14Optimized Analysis on Combination of Coal Mining Equipment and Technology for Extra-Long Mechanized Longwall Mining Face35-37

15Issues on Application of VVVF Converter to Coal ShearerLIU Zhen-jian38-40

16Discussion on Calculation and Simulation of Rock Pile from Bench Blasting41-42

17Analysis on Existing Problems of Strained Pressure Sensor to Measure Pressure of Hydraulic Powered Support43-45

18Discussion on Instantaneous Rayleigh Wave Exploration and Its Phase Speed Calculation46-49

19New Portable Rock Bolt Pulling Meter50-51