The dynamic evolution model and experimental study of gas permeability under multiple factors

The dynamic evolution model and experimental study of gas permeability under multiple factors

Guangzhong SunRunlin Zhang Kunyun Tian 

School of Safety Engineering, Henan Institute Engineering, Zhengzhou, Henan 451191, China

School of Resources and Safety Engineering, Central South University, Changsha, Hunan, 410006, China

Key Laboratory of Coal Mine Safety Training in Henan Province, Zhengzhou, Henan 451191, China

Corresponding Author Email: 
jgzrl694982@163.com
Page: 
49-55
|
DOI: 
https://doi.org/10.18280/ijht.360107
Received: 
11 October 2017
|
Accepted: 
22 December 2017
|
Published: 
31 March 2018
| Citation

OPEN ACCESS

Abstract: 

This paper aims to ascertain the relationship between permeability and temperature of gas-filled coal. For this purpose, the author probed into various influencing factors of permeability, and constructed a permeability evolution model involving temperature, effective stress, gas pressure and humidity. Then, the proposed model was improved through an experimental research using thermal-fluid-solid coupling triaxial seepage test device. It is found that the theoretical results of the model agree well with the experimental data, indicating that the improved model is an ideal tool for predicting the gas flow pattern. The research results lay a solid basis for enhancing gas drainage efficiency and preventing gas outburst.

Keywords: 

coal seam gas, permeability model, effective stress, temperature

1. Introduction
2. Influencing Factors of Permeability
3. Section Headings
4. Correction of Dynamic Evolution Model of Coal Permeability
5. Experiment Verification and Analysis
6. Model Analysis
7. Conclusions
Acknowledgment
Nomenclature
  References

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