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Funct. Mater. 2018; 25 (1): 116-121.

doi:https://doi.org/10.15407/fm25.01.116

New sealing material for drainage operations

H Li1,2,3, SS Guo1, DS Yuan1,2,3

1 School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
2State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo, Henan 454000, China
3Collaborative Innovation Center of Coal-bed Methane and Shale Gas for Central Plains Economic Region, Jiaozuo, Henan 454000, China

Abstract: 

A new sealing material for the drainage operations from pulverized coal was investigated. Its microstructure and strength characteristics are determined. Evaluation of the quality of the test material for hermetic sealing of holes was verified in a coal mine. Experiments have shown that the concentration of drainage gas in the wellbore, which is sealed with sealing material from the pulverized-hole, is higher than when using an expensive cement material (82.50% vs. 69.65%).

Keywords: 
safety; sealing materials; SEM; compressive strength; hole sealing test; gas extraction ngth; hole sealing test; gas extraction
References: 

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