Ex perimental study on water absorption of coal under different pressure source conditions

摘要：

In order to study the effect of pressure on the water absorption capability of coal, the water injection experiments of two coal samples were done under different pressure source conditions and room temperature by using self-designed pressurized water device. The experimental results show that pressure has a positive effect on water absorbability; water absorbability gets large as the pressure increases; the earlier water absorbability of coal is rapid, and the water absorbability of coal displays a similar Langmuir-isothermal adsorption curve with the changes of time, and it has saturated water absorbability. The water injection pressure is higher, which not only strengthened the ability of expanding seepage space, but also developed the transporting water and storage water space. The later water absorption curve of coal becomes weaker, and water adsorption process is mainly influenced by capillary force. The pressure water only supplies provisions and time is the main influential factor.

关键词： pressure water absorbability seepage space capillary force

作者: Shaojie Chen Longzhe Jin Dexiang Ma Wenyong Wang

作者单位: School of Civil and Environment Engineering, Beijing University of Science and Technology, Beijing 1 School of Civil and Environment Engineering, Beijing University of Science and Technology, Beijing 1 School of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 991-994

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）