Movement pattern of debris flow
文献类型：会议论文
| 作者 | Kang A.Z.C(康志成) ; Chen X.Q.
|
| 出版日期 | 2011 |
| 会议名称 | 5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment; |
| 会议日期 | 2011 |
| 会议地点 | 意大利 |
| 关键词 | debris flow movement pattern kinetic mode case |
| 通讯作者 | 康志成 |
| 中文摘要 | A kinematic model is developed to estimate the velocity and runout distance of a gravitative debris flow. The characteristics and the different stages of development of a gravitative flow are first described. The equations governing the motion during the flow are then derived based on the Newtonian translation motion with some simplified assumptions on the erosion process along the flow path. After the motion is initiated, the debris is considered to behave as a frictional material with the friction angle during motion being a function of the distance travelled measured from the initiation point. The equations derived are applied to two well-documented case records to assess their applicability. The application shows that the computed runout distances are slightly higher than the measured values. This slight error on the safe side is consistent with the simplified assumptions used in deriving the equations. The small error is acceptable for engineering designs in areas vulnerable to debris flows. |
| 英文摘要 | A kinematic model is developed to estimate the velocity and runout distance of a gravitative debris flow. The characteristics and the different stages of development of a gravitative flow are first described. The equations governing the motion during the flow are then derived based on the Newtonian translation motion with some simplified assumptions on the erosion process along the flow path. After the motion is initiated, the debris is considered to behave as a frictional material with the friction angle during motion being a function of the distance travelled measured from the initiation point. The equations derived are applied to two well-documented case records to assess their applicability. The application shows that the computed runout distances are slightly higher than the measured values. This slight error on the safe side is consistent with the simplified assumptions used in deriving the equations. The small error is acceptable for engineering designs in areas vulnerable to debris flows. |
| 会议主办者 | Casa Editrice Universita` La Sapienza |
| 会议录 | International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings
 |
| 会议录出版者 | American Society of Civil Engineers (ASCE) |
| 语种 | 英语 |
| ISSN号 | 10.4408/IJEGE.2011-03.B-050 |
| 源URL | [http://192.168.143.20:8080/handle/131551/5020]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 中国科学院水利部成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | Kang A.Z.C,Chen X.Q.. Movement pattern of debris flow[C]. 见:5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment;. 意大利. 2011. |
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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