A comparative study on the physical properties of natural sedimentary loess and manual filling compacted loess
文献类型：期刊论文
| 作者 | Zhang, Linxin1,2,6; Qi, Shengwen1,2,6; Yu, Yongtang5; Zhang, Yaguo4; Li, Zhiqing1,2,6; Hou, Xiaokun1,2,6; Ma, Lina1,2,6; Zou, Yu1,2,6; Guo, Songfeng1,2,6; Peng, Jianbing3 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 80期号:21页码:17 |
| 关键词 | Natural loess Compacted loess Independent-samples t test Correlation coefficient Physical properties |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-021-10047-4 |
| 英文摘要 | With the development of human society, mega engineering projects of removing the tops of hills to infill valleys began to appear in the loess region. The thickness of the manual filling compacted loess can reach tens of meters. For such large-scale construction projects, studying the properties of compacted loess is essential to ensure the safety and reliability of land creation and artificial infrastructure. In this paper, the specimens from two exploration well profiles were carried out to study the physical properties of natural loess and compacted loess from the Loess Plateau. Here the natural loess selected was deposited in old ages (Q(2) and Q(1)) and had strong stability. The natural water content, dry density, specific gravity, liquid limit, plastic limit, plasticity index, clay fraction, silt fraction, sand fraction, compression modulus, and permeability coefficient have been determined. Statistical theories such as t test and correlation coefficient checks were used to describe the difference between the two kinds of loess, and the degree of correlation among various indicators. Besides, 14 groups of exploration well data in 8 studies were collected. The variation of natural water content and dry density with well depth was analyzed to supplement the existing data. Results have shown that the manual filling compacted loess is significantly different from the natural loess. On the whole, the liquid limit, plastic limit, plasticity index, clay fraction, silt fraction, sand fraction and compression modulus of the compacted loess are smaller. In addition, compared with the natural sedimentary loess with strong stability, it deforms more easily. The difference of compression modulus between the compacted loess and natural loess is mainly controlled by the dry density and the particle composition. Moreover, the heterogeneous level of the manual filling compacted loess is greater than that of the natural loess in the horizontal direction and smaller than that of the natural loess in the vertical direction. Under a combination of external hydrologic conditions and dead weight, the compacted loess will become more stable. |
| WOS关键词 | REMOLDED LOESS ; COLLAPSIBILITY |
| 资助项目 | National Natural Science Foundation of China[41790442] ; National Natural Science Foundation of China[41825018] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000710147300001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102976]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Qi, Shengwen; Guo, Songfeng |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China 3.Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China 4.Changan Univ, Sch Civil Engn, 75 Changan Rd, Xian 710061, Peoples R China 5.China Jikan Res Inst Engn Invest & Desigh Co Ltd, 51 Xianning Rd, Xian, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Linxin,Qi, Shengwen,Yu, Yongtang,et al. A comparative study on the physical properties of natural sedimentary loess and manual filling compacted loess[J]. ENVIRONMENTAL EARTH SCIENCES,2021,80(21):17. |
| APA | Zhang, Linxin.,Qi, Shengwen.,Yu, Yongtang.,Zhang, Yaguo.,Li, Zhiqing.,...&Peng, Jianbing.(2021).A comparative study on the physical properties of natural sedimentary loess and manual filling compacted loess.ENVIRONMENTAL EARTH SCIENCES,80(21),17. |
| MLA | Zhang, Linxin,et al."A comparative study on the physical properties of natural sedimentary loess and manual filling compacted loess".ENVIRONMENTAL EARTH SCIENCES 80.21(2021):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
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