Impact liquefaction mechanism of sandy silt with a change in impact energy
文献类型：期刊论文
| 作者 | Dong, Chen-Xi1,2; Duan, Zhao1,3; Li, Renwei4; Li, Jiangshan2; Li, Heng5; Wang, Nianqin1; Peng, Jianbing5,6; Chen, Xin7 |
| 刊名 | QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
 |
| 出版日期 | 2023-08-07 |
| 卷号 | 56期号:3页码:11 |
| ISSN号 | 1470-9236 |
| DOI | 10.1144/qjegh2022-122 |
| 英文摘要 | The impact liquefaction of sediments in the path of a landslide would reduce the friction of the sliding surface, leading to an increase in the speed and distance of the landslide. In this study, a self-designed impact-liquefaction test was used to explore the pressure development of soil under the effect of different impact energies. The microscopic mechanisms were unravelled by using nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM) methods. The results show that soil at the middle depth shows a higher porewater pressure than at the top and bottom of the layer. Furthermore, the variation in the porewater pressure in these parts is relatively stable, and the peak pressure linearly increases with impact energy. The collapse of large pores in sandy silt is the primary reason for the generation of high porewater pressures in sandy silt. But when the soils are high-energy impacted, the mesopores and small pores are compressed and blocked, which also stimulates the porewater pressure. The results also demonstrate weak drainage behaviour of sandy silt under conditions of rapid impact. If the impact energy is sufficient, the porewater pressure in sandy silt suppresses dissipation, causing quick liquefaction in the interior of the sandy silt. |
| 资助项目 | National Natural Science Foundation of China[42177155] ; National Natural Science Foundation of China[41790442] ; Postdoctoral Research Foundation of China[2020M683676XB] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001033523100001 |
| 出版者 | GEOLOGICAL SOC PUBL HOUSE |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/38993]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Duan, Zhao |
| 作者单位 | 1.Xian Univ Sci & Technol, Coll Geol & Environm, Xian 710054, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Xian Univ Sci & Technol, Coll Geol & Environm, Shaanxi Prov Key Lab Geol Support Coal Green Explo, Xian 710055, Peoples R China 4.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 5.Xian Shiyou Univ, Coll Civil Engn, Xian 710054, Peoples R China 6.Changan Univ, Key Lab Western Mineral Resources, Geol Engn Minist Educ, Xian 710054, Peoples R China 7.Univ Chinese Acad Sci, Wuhan Inst Rock & Soil Mech, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Chen-Xi,Duan, Zhao,Li, Renwei,et al. Impact liquefaction mechanism of sandy silt with a change in impact energy[J]. QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY,2023,56(3):11. |
| APA | Dong, Chen-Xi.,Duan, Zhao.,Li, Renwei.,Li, Jiangshan.,Li, Heng.,...&Chen, Xin.(2023).Impact liquefaction mechanism of sandy silt with a change in impact energy.QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY,56(3),11. |
| MLA | Dong, Chen-Xi,et al."Impact liquefaction mechanism of sandy silt with a change in impact energy".QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY 56.3(2023):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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