垃圾土气体渗透试验最佳进气压力

作者：Yang Yu; Chen Feng; Yao Yuan; Zhang Shuguang; Liu Lei^*

来源：Journal of Liaoning Technical University(Natural Science), 2021, 40(6): 525-529.

DOI：10.11956/j.issn.1008-0562.2021.06.007

• Compaction density
• Gas compressibility
• Gas permeation
• Inlet pressure
• Municipal solid waste

In order to determine the optimal inlet pressure during permeability test of municipal solid waste, the gas permeability test of fresh waste and old landfilled waste under different compaction density was carried out by means of the self-developed gas permeability test device. The effect of gas compressibility on gas permeability and the optimum inlet pressure of gas permeation test were determined. The test results show that when 1~10 kPa is used for the gas permeability test, the pressure difference and the pressure squared difference have a good linear relationship with the gas flow, and the gas compressibility has negligible influence on the gas permeability. The best inlet pressure of fresh waste is 3 kPa, and the best inlet pressure of old landfilled waste is 4 kPa. ? 2021, Editorial Office of Journal of Liaoning Technical University. All right reserved.

• 单位
  中国科学院; 岩土力学与工程国家重点实验室; 桂林理工大学