DOI: 10.11799/ce201701017
Research on control technology and emission law of hydrogen sulfide in steeply dipping and extra-thick coal seam
YAO Ya-hu
HUANG Zhong-feng
LIU Jun
Abstract：To solve the hydrogen sulfide overrun in top coal caving of steep and extra-thick seam, the paper described hazards of hydrogen sulfide overrun on human health and equipment, introduced emission law of hydrogen sulfide in top coal caving, focused on the influence on emission law of hydrogen sulfide, including coal shearer cutting speed, coal caving intensity, top coal and bottom coal cutting, and scraper advancing. The results indicate that, the hydrogen sulfide emission rises with the increasing coal shearer cutting speed and caving intensity. According to comparative analysis, absorption liquid spraying and advance pre-injection of absorbing liquid and other technical measures were applied to control the hydrogen sulfide overrun in upper corner, return airway. Hydrogen sulfide concentration in working face mining decreased from 77ppm to 12ppm, from 470ppm to 62. 6ppm in upper space of front scraper, from 110ppm to 15ppm in return airway. The hydrogen sulfide treatment achieved significant effect preventing gas hazards to human health and equipment; through comprehensive coordinated management, breakthrough was made in hydrogen sulfide disaster control technology.
Keywords：steep coal seamextra-thick coal seamtop coal cavingemission lawhydrogen sulfide governance
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 56-59 )