Paper Title:
Research on the Relationship between the Drilling Cutting Gas Desorption Index △h2 and Parameters of Gas Occurrence
  Abstract

The drilling cutting gas desorption index △h2 is one of the most important indexes for the prediction of coal and gas outburst. Based on the mathematical and physical model of the gas diffusion of coal particles, the analytical solution of △h2 was deduced. The relationship between the drilling cutting gas desorption index △h2 and parameters of gas occurrence such as the gas diffusion coefficient, adsorption constants (a and b), gas pressure, and gaSubscript textSubscript texts content were studied. The results show that △h2 increases and gas diffusion resistance decreases with the gas diffusion coefficient. The drilling cutting gas desorption index △h2 increases with the adsorption constant a, and the two meet the linear relationship. △h2 increases with the adsorption constant b and the raising rate gets lower gradually. And, △h2 increases with the gas pressure, and the two meet the power relationship with very high correlation coefficient.△h2 and gas content are in linear relationship.

  Info
Periodical
Chapter
Chapter 7: Other Related Topics
Edited by
Xuejun Zhou
Pages
1312-1318
DOI
10.4028/www.scientific.net/AMM.99-100.1312
Citation
J. L. Gao, Y. Wang, "Research on the Relationship between the Drilling Cutting Gas Desorption Index △h2 and Parameters of Gas Occurrence", Applied Mechanics and Materials, Vols. 99-100, pp. 1312-1318, 2011
Online since
September 2011
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$32.00
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