Coal Science and Technology Articles

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1Application of 900 MHz DDS/PLL to mine wireless communication sy stem1-3

2Operation principle and features of JLT4565 heavy medium vertical wheel separa tion machine4-6

3Practice on water injection softening to increase caving of seam with high thickness parting6-8

4Rebuilding and practice on filtration system of Dongcheng Coal Preparation Plant 9-12

5Discussion on estimated method for recompense cost of ground failure due to mining activity under village12-15

6Safety coal mining technology with partial coal pillars16-19

7Reinforcement construction and measurement for soft floor of connected roadway in metro system20-23

8Directional blasting to remove 60 m chimney23-25

9Practice on anchor combined support technology applied to reinforce large cros s section chamber26-27,51

10Research on bore hole enlarging technology with high water jet 28-31

11Study on composite test of additive to coal water mixture32-33

12Research and application of anchor support simulation test in thick s eam gateway of fully mechanized caving face34-37

13Portable error code detector of basic belt transmission system38-39

14Numerical value analysis of coal bed methane influent equation40-42

15Discussion on rational arrangement of mining gateway and optimization of mine ventilation system43-45

16KSDK-15N mine flame proof multi function reversible portable switchgear46-48

17KSDK-15N mine flame proof multi function reversible portable switchgear46-48