Effects of Heat Softening on Initiation of Landslides
文献类型：期刊论文
| 作者 | Xiong Chuan-xiang1,2; Lu Xiao-bing3; Huang Wei-da4; Wang Cheng-hua5 |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2014-11-01 |
| 卷号 | 11期号:6页码:1571-1578 |
| 关键词 | Landslide Thermo-effect Slide surface Initiation |
| ISSN号 | 1672-6316 |
| 通讯作者 | XIONG Chuan-xiang |
| 英文摘要 | Effects of heat softening on the initiation of slide surface (shear banding) in clayey slopes during fast deformation were discussed. Controlling equations considering heat, pore pressure and mechanical movement were presented. By perturbation method, the instability condition of localized zone (i.e. criterion for initiation of shear banding) for thermal related soils, such as clayey slope, was obtained. It is shown that slide surface initiates once the thermal-softening effects overcome the strain-hardening effects whether it is adiabatic or not. Without strain hardening effects, strain rate hardening obviously plays a role in initiation of shear band. During initiating process, heat is trapped inside the shear band, which leads rapidly to a pore pressure increase and fast loss of strength. The localized shear strain is concentrated in a narrow zone with a width of several centimeters at most and increases fast. This zone forms the sliding surface. Temperature can increase more than 2 degrees C, pore pressure can increase 160% in about 0.1s inside this zone. These changes cause the fast decrease in friction-coefficient by about 36% over the initial value. That is how shear band initiated and developed in clayey slopes. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | CATASTROPHIC LANDSLIDES ; STRENGTH ; SOIL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000345621100019 |
| 公开日期 | 2014-11-18 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7425]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2014_Vol11 No.6 |
| 作者单位 | 1.Fuzhou Univ, Sch Environm & Resources, Fuzhou 350108, Peoples R China 2.Fujian Prov Key Lab Remote Sensing Soil Eros & Di, Fuzhou 350108, Peoples R China 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 4.Fujian Acad Bldg Res, Fuzhou 350025, Peoples R China 5.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong Chuan-xiang,Lu Xiao-bing,Huang Wei-da,et al. Effects of Heat Softening on Initiation of Landslides[J]. JOURNAL OF MOUNTAIN SCIENCE,2014,11(6):1571-1578. |
| APA | Xiong Chuan-xiang,Lu Xiao-bing,Huang Wei-da,&Wang Cheng-hua.(2014).Effects of Heat Softening on Initiation of Landslides.JOURNAL OF MOUNTAIN SCIENCE,11(6),1571-1578. |
| MLA | Xiong Chuan-xiang,et al."Effects of Heat Softening on Initiation of Landslides".JOURNAL OF MOUNTAIN SCIENCE 11.6(2014):1571-1578. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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