CHEN Tien-chien,CAI He-lun,HUANG Yan-rong,et al.Slope Failure Mode Related to Soil Infiltration-Laboratory Rainfall Model Test[J].Research of Soil and Water Conservation,2012,19(01):254-257.
人工降雨模型试验研究降雨入渗对滑坡类型之影响
- Title:
- Slope Failure Mode Related to Soil Infiltration-Laboratory Rainfall Model Test
- 分类号:
- P642.22
- 摘要:
- 台湾属海岛型气候，因而年雨量丰沛，降雨时间与空间的不均匀，对台湾大量的山坡地造成威胁。该研究系利用人工降雨系统，配合土壤模型试体探讨强降雨下滑坡破坏型态与坡体饱和度之关系，以对各种边坡稳定、边坡破坏获得更进一步的了解。研究结果得知边坡滑动主要发生在坡体趋近稳定饱和时，而坡面冲蚀则受土壤饱和度影响较小。土壤渗透率与降雨强度之关系亦影响着坡面破坏型态，降雨强度远大于土壤渗透系数时，其破坏型态以浅层滑动为主；降雨强度近似于土壤土壤渗透系数时，则主要为较深层滑动；若降雨强度小于土壤临界入渗率时，则主要为表面冲蚀破坏。
- Abstract:
- Taiwan, an island climate with abundant annual rainfall, hillside resident is threaten by inducing landslide from the violent variation of rainfall on time and spatial distribution. This study performs the landslide model test to study the landslide mode related to slope saturation increased by high intensity rainfall. Results showed that slope sliding occurred mainly in the period of the soil closer to high saturation, oppositely, slope erosion is less affected by soil saturation. Soil permeability and rainfall intensity also affect the slope failure mode, the failure mode is mainly shallow sliding as the rainfall intensity much greater than soil permeability; the deeper sliding is mainly for the case of rainfall intensity much greater than soil permeability; last, the surface runoff erosion is usually for the rainfall intensity much lower than soil permeability.
参考文献/References:
[1] 王振宇, 姜亘, 赖建璋.人工降雨系统性能及校准研究[D].台湾屏东:国立屏东科技大学, 2010.
[2] 林鸿州, 于玉贞, 李广信, 等.降雨特性对土质边坡失稳的影响[J].岩石力学与工程学报, 2009, 28 (1):198-204.
[3] 林鸿州, 于玉贞, 李广信, 等.土水特征曲线在滑坡预测中的应用性探讨[J].岩石力学与工程学报, 2009, 28 (12):2569-2576.
[4] 吴嘉俊.大型户外人工降雨模拟机之研发[R]//行政院农业委员会八十三年度研究报告, 1994:83科技-2.10-林-23.
[5] 范正成.田间降雨机之回顾、研究及比较[J].中华水土保持学报, 1991, 22 (1):9-20.
[6] 陈荣河.土石流之发生机制[J].地工技术, 1999, 74:21-28.
[7] 蓝少村.降雨导致浅层边坡破坏之模型试验与分析[D]. 台湾台南:国立成功大学土木工程研究所, 2008.
[8] Peter L. Slope failures in Hong Kong[J]. Q. J. Engng. Geol., 1975, 8:31-65.
[9] Varnes D J. Slope movement types and processes[C]//Schuster R L, Krizek R J. Landslides, analysis and control, National Academy of Sciences, Special Report 176.Washington D C, 1978.
相似文献/References:
[1]喻明美,谢正生.广州市白云山五种森林类型的土壤渗透性研究[J].水土保持研究,2011,18(01):153.
YU Ming-mei,XIE Zheng-sheng.Study on Soil Permeability Capability of Five Forest Types in Baiyunshan Scenic Spot of Guangzhou[J].Research of Soil and Water Conservation,2011,18(01):153.
备注/Memo
收稿日期:2011-7-18;改回日期:2011-11-2。
基金项目:行政院农业委员会农粮署科技计划（97农科10.2.1粮Z1.2及98农科7.3.1粮Z1.2）
作者简介:陈天健（1963- ），男，台湾嘉义人，博士，副教授，研究方向：滑坡预警、土石流、坡地灾害。E-mail：tcchen@mail.npust.edu.tw