Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing Process
The difference in the water migration and the deformation characteristics of silty sand and clay in the freezing process cannot be ignored when the artificial ground freezing method is used in coastal complex strata consisting of clay and silty sand, and is also the root cause of current engineering...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Shanghai Jiao Tong University
2022-05-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
| Subjects: | |
| Online Access: | http://xuebao.sjtu.edu.cn/article/2022/1006-2467/1006-2467-56-5-675.shtml |
| _version_ | 1818532069333008384 |
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| author | ZHOU Jie, REN Junjie |
| author_facet | ZHOU Jie, REN Junjie |
| author_sort | ZHOU Jie, REN Junjie |
| collection | DOAJ |
| description | The difference in the water migration and the deformation characteristics of silty sand and clay in the freezing process cannot be ignored when the artificial ground freezing method is used in coastal complex strata consisting of clay and silty sand, and is also the root cause of current engineering accidents caused by freezing. In order to find out the difference of the water migration and the deformation characteristics between the silty sand and clay, a self-made single side freezing instrument was used to conduct a series of freezing tests of original silty sand of ②3 layer and the remodeled clay of ④ layer in Shanghai at a freezing temperature of -20 ℃, -15 ℃, and -10 ℃. The results show that the deformation curves can be divided into steep curve I(silty sand) and gradual curve II(clay). The deformation curves of different layers of clay soil sample fluctuated greatly with time. The results indicate that water migration is fully developed inside the clay during the freezing process, while most of the water inside the silty sand freeze quickly and thus water migration is not developed as obvious as that inside the clay. In addition, the deformation curves of the two types of soils is consistent with the distribution changes of water inside the silty sand and clay after freezing. Based on the research results, specific suggestions can be made for the relevant measures to deal with engineering problems such as frost heave in the practice of the freezing method for coastal complex strata consisted of silty sand and clay. |
| first_indexed | 2024-12-11T17:40:43Z |
| format | Article |
| id | doaj.art-0621035228404dbe88b2b7113cbaeb52 |
| institution | Directory Open Access Journal |
| issn | 1006-2467 |
| language | zho |
| last_indexed | 2024-12-11T17:40:43Z |
| publishDate | 2022-05-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj.art-0621035228404dbe88b2b7113cbaeb522022-12-22T00:56:31ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672022-05-0156567568310.16183/j.cnki.jsjtu.2021.057Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing ProcessZHOU Jie, REN Junjie0a. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;b. Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, ChinaThe difference in the water migration and the deformation characteristics of silty sand and clay in the freezing process cannot be ignored when the artificial ground freezing method is used in coastal complex strata consisting of clay and silty sand, and is also the root cause of current engineering accidents caused by freezing. In order to find out the difference of the water migration and the deformation characteristics between the silty sand and clay, a self-made single side freezing instrument was used to conduct a series of freezing tests of original silty sand of ②3 layer and the remodeled clay of ④ layer in Shanghai at a freezing temperature of -20 ℃, -15 ℃, and -10 ℃. The results show that the deformation curves can be divided into steep curve I(silty sand) and gradual curve II(clay). The deformation curves of different layers of clay soil sample fluctuated greatly with time. The results indicate that water migration is fully developed inside the clay during the freezing process, while most of the water inside the silty sand freeze quickly and thus water migration is not developed as obvious as that inside the clay. In addition, the deformation curves of the two types of soils is consistent with the distribution changes of water inside the silty sand and clay after freezing. Based on the research results, specific suggestions can be made for the relevant measures to deal with engineering problems such as frost heave in the practice of the freezing method for coastal complex strata consisted of silty sand and clay.http://xuebao.sjtu.edu.cn/article/2022/1006-2467/1006-2467-56-5-675.shtmlartificial ground freezing methodwater migrationsilty sandclay |
| spellingShingle | ZHOU Jie, REN Junjie Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing Process Shanghai Jiaotong Daxue xuebao artificial ground freezing method water migration silty sand clay |
| title | Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing Process |
| title_full | Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing Process |
| title_fullStr | Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing Process |
| title_full_unstemmed | Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing Process |
| title_short | Water Migration and Deformation Characteristics of Coastal Complex Strata in Artificial Freezing Process |
| title_sort | water migration and deformation characteristics of coastal complex strata in artificial freezing process |
| topic | artificial ground freezing method water migration silty sand clay |
| url | http://xuebao.sjtu.edu.cn/article/2022/1006-2467/1006-2467-56-5-675.shtml |
| work_keys_str_mv | AT zhoujierenjunjie watermigrationanddeformationcharacteristicsofcoastalcomplexstratainartificialfreezingprocess |