Long-term sustainability of biogas bubbles in sand

doi:10.1038/s41598-020-69324-0

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Long-term sustainability of biogas bubbles in sand
	Hu, Xiaoying 2; Li, Dandan 2; Peng, Erxing 1; Hou, Zheng 2; Sheng, Yu 1; Chou, Yaling 2
刊名	SCIENTIFIC REPORTS
	2020-07-29
卷号	10 期号:1
ISSN号	2045-2322
DOI	10.1038/s41598-020-69324-0
英文摘要	Desaturation is a new method to mitigate liquefaction of sand. It aims to prevent liquefaction by generating gas/air in the pores of fully saturated sands, and biogas is one of the most suitable gas. In order to evaluate the long-term sustainability of biogas bubbles, a series sustainability test on biogas bubbles in pores of sand was conducted with a one-dimensional device under hydrostatic condition, hydraulic gradient flow condition and horizontal excitation condition. The variation trend of the retention of biogas bubbles in the pores of soil under the aforementioned conditions was analyzed. Test results indicated that after 72 weeks of monitoring sand samples, biogas bubbles existed stably in the pores of soil under hydrostatic conditions. In hydraulic gradient flow, the stability under upward seepage flow showed a similar trend to that of downward seepage flow. When the hydraulic gradient was constant, the degree of saturation increased in a certain period and finally remained constant. When the hydraulic gradient increased by 0.1, 0.2, 0.3, 0.4, and 0.5, the degrees of saturation increase were 0.8%, 11.5%, 0.5%, 0.1%, and 0%, respectively. After 41,200 cycles with different accelerations, the degree of saturation of the sample increased slightly, and the biogas bubbles basically remained stable.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000556384600025
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155141]
专题	土木工程学院
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ Technol, Lanzhou 730050, Gansu, Peoples R China;
推荐引用方式 GB/T 7714	Hu, Xiaoying,Li, Dandan,Peng, Erxing,et al. Long-term sustainability of biogas bubbles in sand[J]. SCIENTIFIC REPORTS,2020,10(1).
APA	Hu, Xiaoying,Li, Dandan,Peng, Erxing,Hou, Zheng,Sheng, Yu,&Chou, Yaling.(2020).Long-term sustainability of biogas bubbles in sand.SCIENTIFIC REPORTS,10(1).
MLA	Hu, Xiaoying,et al."Long-term sustainability of biogas bubbles in sand".SCIENTIFIC REPORTS 10.1(2020).