川西地区低频率泥石流的特征 | |
王士革 | |
刊名 | 水土保持通报 |
2010 | |
卷号 | 30期号:1页码:227-231 |
关键词 | 泥石流 低频率 特征 川西地区 |
其他题名 | Characteristics of Low-frequency Debris Flow in Mountain Area of Western Sichuan Province |
通讯作者 | 王士革 |
合作状况 | 国内 |
中文摘要 | 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30a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。 |
英文摘要 | 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 debris flow are characterized by high vegetation coverage and a small number and small-scale of adverse geological phenomena.The groove bed scour of low-frequency debris flow is dominant and erosion rate and sediment transport capacity are high.Understanding the characteristics of low-frequency debris flow has important significance in guiding debris flow prevention. |
学科主题 | 灾害学 |
分类号 | P642.23 |
收录类别 | CSCD |
资助信息 | 水利部公益性行业科研专项经费“岷江上游滑坡泥石流溃坝洪水监测与防御”(200801032);国家自然科学基金项目“非集中固体物质补给的低频率泥石流形成机理研究”(40871054) |
语种 | 中文 |
CSCD记录号 | CSCD:3877278 |
公开日期 | 2012-01-18 |
内容类型 | 期刊论文 |
源URL | [http://192.168.143.20:8080/handle/131551/3761] |
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 |
推荐引用方式 GB/T 7714 | 王士革. 川西地区低频率泥石流的特征[J]. 水土保持通报,2010,30(1):227-231. |
APA | 王士革.(2010).川西地区低频率泥石流的特征.水土保持通报,30(1),227-231. |
MLA | 王士革."川西地区低频率泥石流的特征".水土保持通报 30.1(2010):227-231. |
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