Pore Connectivity of Different Ranks of Coals and Their Variations Under the Coupled Effects of Water and Heat
作者: Weimin ChengGuanhua NiQuangui LiYangfeng Zheng
作者单位: 1Shandong University of Science and Technology
2Chongqing University
刊名: Arabian Journal for Science and Engineering, 2017, Vol.42 (9), pp.3839-3847
来源数据库: Springer Nature Journal
DOI: 10.1007/s13369-017-2506-2
关键词: Pore connectivityDifferent rank coalsCoupling action of water and heatGas drainageWater blocking effect
原始语种摘要: In this paper, a series of experiments were conducted to reveal differences in pore connectivity between different ranks of coal, as well as their variations under the coupled effects of water and heat. The results demonstrated that the pore connectivity of coal undergoes three stages of evolution: Stage I, in which pore size is \({>}36\,{\upmu }\hbox {m}\) ; Stage II, in which pore size ranges from 0.07 to \(36\,{\upmu }\hbox {m}\) ; and Stage III, in which pore size is \({<}0.07\,{\upmu }\hbox {m}\) . The highest pore connectivity occurs in Stage I, and the lowest pore connectivity occurs in Stage III. This trend is likely observed because the coupled effects of water and heat promote the flow of fluids in coal, thereby reducing the capillary forces between the fluids and the walls of...
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  • hydrothermal 热液的
  • coupled 耦合
  • pores 气孔
  • connectivity 连通性
  • reveal 显露
  • water 
  • corrosive 腐蚀的
  • distensible 会膨胀的
  • drainage 排水
  • blocking 阻塞