In this issue (20 articles)

1. 

   OriginalPaper

   Prediction of methane emissions during the extraction of close-to-roof layer of a seam of large thickness

   Eugeniusz Krause, Xian-chao Qu Pages 337-343

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2. 

   OriginalPaper

   Drainage feature about coalbed methane wells in different hydrogeological conditions in Fanzhuang area

   Xiao-ming Ni, Ran Lin, Yan-bin Wang Pages 344-349

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3. 

   OriginalPaper

   Experimental study on effects of CBM temperature-rising desorption

   Dong-min Ma, Ya-bing Lin Pages 350-354

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4. 

   OriginalPaper

   The enrichment characteristics and geological controlling factors of coalbed methane occurrence in Laochang area, Yunnan Province

   Cai-fang Wu, Zhao-ying Chen, Cong Wang… Pages 355-361

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5. 

   OriginalPaper

   Geologically controlling factors on coal bed methane (CBM) productivity in Liulin

   Li-jun Gao, Da-zhen Tang, Hao Xu… Pages 362-367

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6. 

   OriginalPaper

   Determination of protection range of mining upper protective layers and its numerical simulation

   Zhi-min Song, Xin-chun Gao, Kun-yun Tian Pages 368-373

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7. 

   OriginalPaper

   Calculation method of first collapse span with superhigh water material backfill mining

   Li-ya Zhang, Ka-zhong Deng Pages 374-378

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8. 

   OriginalPaper

   Application of modified polypropylene (crude) fibers concrete to strengthen the support structures in deep mine roadway

   Yuan-zhi Bi, Da-lin Zhang, Jin-hua Hu Pages 379-384

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9. 

   OriginalPaper

   Establishment of water source discrimination model in coal mine by using hydrogeochemistry and statistical analysis: a case study from Renlou Coal Mine in northern Anhui Province, China

   Lin-hua Sun, He-rong Gui Pages 385-389

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10. 

    OriginalPaper

    The whole process confirmation management and its application in coal mine safe production

    Hai-fei Yao Pages 390-395

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11. 

    OriginalPaper

    Mechanism of oxidation of low rank coal by nitric acid

    Kai-yi Shi, Xiu-xiang Tao, Fen-fen Hong… Pages 396-399

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12. 

    OriginalPaper

    Features and correct application of coal vitrinite reflectance index

    Bo-yuan Yao, De-ping Li Pages 400-406

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13. 

    OriginalPaper

    Gas-solid flow field numerical simulation of different feeding and returning formations of flue-gas circulating fluidized bed

    Hu Wang Pages 407-412

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14. 

    OriginalPaper

    Distribution pattern and limiting factors of vegetation in coal waste pile of Xinzhuangzi coal mine in Huainan

    Zhao-xia Chu, Shun-chang Wang… Pages 413-417

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15. 

    OriginalPaper

    Research on the characteristics of noise source on heading face and noise propagation in mine laneway

    You-duo Peng, Wei-hua Xie, Zhi-yong Xie… Pages 418-422

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16. 

    OriginalPaper

    Research on temperature rise of hoisting machine disk brake

    Jun Ma, Hai-bo Jang Pages 423-427

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17. 

    OriginalPaper

    Automatic lifting system design and application of large load powered support test rig

    Xin-ke Liu, Rui Zhao, Zhong-hui Zhao Pages 428-431

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18. 

    OriginalPaper

    Feature extraction of induction motor stator fault based on particle swarm optimization and wavelet packet

    Pan-pan Wang, Li-ping Shi, Yong-jun Hu… Pages 432-437

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19. 

    OriginalPaper

    An accurate calculation method of the power harmonic parameters based on the delay time theorem of Fourier transform

    Yi Tang, Yong-li Fang, Luo Yang, Yu-xin Sun… Pages 438-442

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20. 

    OriginalPaper

    Design of intrinsically safe power supply

    Rui-jin Li, Lin Jin Pages 443-448

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