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| 川西地区低频率泥石流的特征 | |
| 引用本文： | 林明安,王士革,范晓岭,卢铖昀. 川西地区低频率泥石流的特征[J]. 水土保持通报, 2010, 30(1): 227-230 |
| 作者姓名： | 林明安 王士革 范晓岭 卢铖昀 |
| 作者单位： | 1. 中国科学院,水利部,成都山地灾害与环境研究所,四川,成都,610041;中国科学院,研究生院,资源与环境学院,北京,100049 2. 中国科学院,水利部,成都山地灾害与环境研究所,四川,成都,610041 3. 北京城建勘测设计研究院有限责任公司,北京,100101 4. 中国土木工程集团有限公司,北京,100038 |
| 基金项目： | 水利部公益性行业科研专项经费，国家自然科学基金项目 |
| 摘 要： | 泥石流按其暴发频率分为高频率(每年发生一次或多次)、中频率(数年至30 a发生一次)和低频率(30a以上发生一次)泥石流3类.低频率泥石流具有暴发周期长,规模大,危害严重等基本特点.选取川西地区不同频率的泥石流沟道进行对比研究,结果表明,该区低频率泥石流还具有两个典型特征:低频率泥石流流域具有植被覆盖度高,不良地质现象数量少且规模小的特点;低频率泥石流在侵蚀过程中以沟床冲刷为主且侵蚀速度快,泥砂输移比高.关于低频率泥石流上述两点特征的研究,对泥石流的预防和治理有重要指导意义. |
| 关 键 词： | 泥石流 低频率 特征 川西地区 |
| 收稿时间： | 2009-03-18 |
| 修稿时间： | 2009-07-21 |
Characteristics of Low-frequency Debris Flow in Mountain Area of Western Sichuan Province |
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| LIN Ming-an,WANG Shi-ge,FAN Xiao-ling and LU Cheng-yun. Characteristics of Low-frequency Debris Flow in Mountain Area of Western Sichuan Province[J]. Bulletin of Soil and Water Conservation, 2010, 30(1): 227-230 | |
| Authors: | LIN Ming-an WANG Shi-ge FAN Xiao-ling LU Cheng-yun |
| Affiliation: | LIN Ming-an1,2,WANG Shi-ge1,FAN Xiao-ling3,LU Cheng-yun4 (1.Institute of Mountain Hazards , Environment,Chinese Academy of Sciences & Ministry of Water Conservancy,Chengdu,Sichuan 610041,China,2.Department of Resources , Environment,Graduate University of Chinese Academy of Sciences,Beijing 100049,3.Beijing Urban Construction Exploration & Surveying Design Research Institute Co.,LTD.,Beijing 100101,4.China Civil Engineering Construction Corporation,Beijing 100038,China) |
| Abstract: | Debris flow can be divided into three types according to its outbreak frequency:high-frequency (one or many times in a year),medium-frequency (one time in several to 30 years),and low-frequency (one time in more than 30 years).Low-frequency debris flow often burst fiercely without any anticipation and cause serious harm.Based on the analysis of the data from debris flow gullies with different outbreak frequencies,the characteristics of low-frequency debris flow are summarized.Watersheds with Low-frequency d... |
| Keywords: | debris flow low-frequency characteristics Western Sichuan Province |
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