Anisotropic swelling behaviour of coal matrix cubes exposed to water vapour: Effects of relative humidity and sample size
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- 作者：Jinfeng Liu ; j.liu1@uu.nl ; Colin J. Peach ; Christopher J. Spiers
- 关键词：(E)CBM ; 3D dilatometry ; Equilibrium ; Swelling kinetics ; Thermodynamics
- 刊名：International Journal of Coal Geology
- 出版年：2016
- 出版时间：1 October 2016
- 年：2016
- 卷：167
- 期：Complete
- 页码：119-135
- 全文大小：2153 K
- 卷排序：167
文摘
Volumetric response of coal matrix to water vapour were measured accurately and continuously Experiments demonstrate anisotropic swelling/shrinkage with the largest strains occurring normal to bedding The sample size strongly influence swelling kinetics, but not equilibrium swelling strain Equilibrium volumetric swelling strains show a near-linear dependence on relative humidity Decreasing in-situ water activity might be a promising strategy for (E)CBM production