Experimental study on fracturing coal seams using CaO demolition materials to improve permeability

Authors

Yibo Tang, State Key Laboratory of Deep Coal Mining and Environment Protection, Huainan 232000, China; College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, China
Liang Yuan, State Key Laboratory of Deep Coal Mining and Environment Protection, Huainan 232000, China
Junhua Xue, State Key Laboratory of Deep Coal Mining and Environment Protection, Huainan 232000, China
Changrui Changrui, State Key Laboratory of Deep Coal Mining and Environment Protection, Huainan 232000, China

Abstract

Currently, methane gas disasters in underground coal mines are a major problem which seriously threatens safe mining. This study employed soundless chemical demolition for fracturing coal seams with low permeability. Additionally, the fracturing theory and failure mechanisms of soundless chemical demolition agents were investigated. Materials such as CaO, naphthalene-based water reducer, sodium gluconate and silicate cement were used to prepare the novel soundless chemical demolition agent, whose optimum proportion was discovered to be 90:3:5:7 by carrying out orthogonal experiments. The innovative demolition agent cracked briquettes and the maximum width of cracks reached 16.33 mm, showing significant potential for improving the permeability of coal seams.

Recommended Citation

Tang, Yibo; Yuan, Liang; Xue, Junhua; and Changrui, Changrui (2017) "Experimental study on fracturing coal seams using CaO demolition materials to improve permeability," Journal of Sustainable Mining: Vol. 16 : Iss. 2 , Article 3.
Available at: https://doi.org/10.46873/2300-3960.1151

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