Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C
Response of pore-water pressure has crucial effect on the engineering geological performance of permafrost ground. However, there is a dearth of literature on the measurement of pore-water pressure in frozen soils due to challenges with regard to technical and operational method. To validate the gen...
Published in: | Geofluids |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2022
|
Subjects: | |
Online Access: | https://doi.org/10.1155/2022/8990214 https://doaj.org/article/a2bb581946074bb4ab6f4b8f2d226ed5 |
id |
ftdoajarticles:oai:doaj.org/article:a2bb581946074bb4ab6f4b8f2d226ed5 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:a2bb581946074bb4ab6f4b8f2d226ed5 2024-09-15T18:30:06+00:00 Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C Hu Zhang Suiqiao Yang Huijun Jin Mengxin Liu 2022-01-01T00:00:00Z https://doi.org/10.1155/2022/8990214 https://doaj.org/article/a2bb581946074bb4ab6f4b8f2d226ed5 EN eng Wiley http://dx.doi.org/10.1155/2022/8990214 https://doaj.org/toc/1468-8123 1468-8123 doi:10.1155/2022/8990214 https://doaj.org/article/a2bb581946074bb4ab6f4b8f2d226ed5 Geofluids, Vol 2022 (2022) Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.1155/2022/8990214 2024-08-05T17:48:33Z Response of pore-water pressure has crucial effect on the engineering geological performance of permafrost ground. However, there is a dearth of literature on the measurement of pore-water pressure in frozen soils due to challenges with regard to technical and operational method. To validate the generation of pore-water pressure and to reveal its variation property in frozen soils at subfreezing temperatures close to 0°C, a miniature pressure transducer was utilized to conduct a number of confined compression tests. Double-wall structure avoided damage to the transducer during frozen soil sampling. The transducer at sample bottom perceived a pressure fluctuation as varying air pressure imposed on sample surface, proving the connectivity among the pores in frozen soils with a hysteretic effect on pressure transmission. Pore-water pressure experienced a progressive increase followed by a slow dissipation under invariable load and temperature conditions when water drainage was permitted, while a monotonic increase in pressure was observed for an undrained sample. With decreasing temperature, a smaller peak and a more dilatory dissipation were displayed. When the sample was exposed to a stepwise warming process, a similar performance for the pressure was obtained with abrupt rise at the turning point of temperature. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Geofluids 2022 1 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 Hu Zhang Suiqiao Yang Huijun Jin Mengxin Liu Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C |
topic_facet |
Geology QE1-996.5 |
description |
Response of pore-water pressure has crucial effect on the engineering geological performance of permafrost ground. However, there is a dearth of literature on the measurement of pore-water pressure in frozen soils due to challenges with regard to technical and operational method. To validate the generation of pore-water pressure and to reveal its variation property in frozen soils at subfreezing temperatures close to 0°C, a miniature pressure transducer was utilized to conduct a number of confined compression tests. Double-wall structure avoided damage to the transducer during frozen soil sampling. The transducer at sample bottom perceived a pressure fluctuation as varying air pressure imposed on sample surface, proving the connectivity among the pores in frozen soils with a hysteretic effect on pressure transmission. Pore-water pressure experienced a progressive increase followed by a slow dissipation under invariable load and temperature conditions when water drainage was permitted, while a monotonic increase in pressure was observed for an undrained sample. With decreasing temperature, a smaller peak and a more dilatory dissipation were displayed. When the sample was exposed to a stepwise warming process, a similar performance for the pressure was obtained with abrupt rise at the turning point of temperature. |
format |
Article in Journal/Newspaper |
author |
Hu Zhang Suiqiao Yang Huijun Jin Mengxin Liu |
author_facet |
Hu Zhang Suiqiao Yang Huijun Jin Mengxin Liu |
author_sort |
Hu Zhang |
title |
Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C |
title_short |
Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C |
title_full |
Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C |
title_fullStr |
Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C |
title_full_unstemmed |
Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C |
title_sort |
measurement of excess pore-water pressure in frozen soil at subfreezing temperatures close to 0°c |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1155/2022/8990214 https://doaj.org/article/a2bb581946074bb4ab6f4b8f2d226ed5 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Geofluids, Vol 2022 (2022) |
op_relation |
http://dx.doi.org/10.1155/2022/8990214 https://doaj.org/toc/1468-8123 1468-8123 doi:10.1155/2022/8990214 https://doaj.org/article/a2bb581946074bb4ab6f4b8f2d226ed5 |
op_doi |
https://doi.org/10.1155/2022/8990214 |
container_title |
Geofluids |
container_volume |
2022 |
container_start_page |
1 |
op_container_end_page |
11 |
_version_ |
1810471583308840960 |