IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
西藏波密加马其美沟泥石流运动与冲淤特性
Alternative TitleCharacteristics of Movement, Erosion and Deposition of Debris Flows in Jiamaqimei Gully, Bomi, Xizang
Language中文
田连权
Editor中国科学院成都地理研究所
Pages90-93
1981-12
Publisher科学技术出版社重庆分社
Publication Place重庆
Keyword泥石流 加马其美沟 波密 西南
AbstractThe Jiamaqimei Gully is Known as disastrous bebris gully across the Sichuan-Xizang Highway. In the gully there are two types of debris flows, e. g. the viscng to their flow regimes, the viscous debris flows may be subdivided into three groups, i.e. the continuous, the intermittent and creeping. The intermittent debris flow contains a lot of stones and its density in above 2.2t/m3. In the moving process, it appears as a series of pulses and interruptions. Since this types of debris flow has the greatest energy, it is the major bed-forming flow in the gully. At the lower reaches of gully, erosion and deposition of debris flows appear chiefly as the changes of the deposited bar, which is dependent on the changes of the energy of intermittent debris flows. When they suddenly decrease in energy, the intermittent debris flows will stop as whole and form a deposited bar. The height of the bar rises alongside the increase of discharge of the debris flow. The higher the bar is, the greater energy the debris flow behind the bar accumulates. At this time, a debris flow with high energy occurs, the bar will be lowered down or be swept away. At the same time the bed of the gully will be deepened and widened on the right side. For the last 30 years, sometimes a bar is produced and the bed becomes higher; sometimes the bar is cleared away and the bed is deepended and widened on the rhght. In general, the vertical erosion ispredominant.
Other Abstract加马其美沟是我国西南山区一条雨水型泥石流沟。沟内泥石流类型众多,暴发频繁,活动强烈,危及川藏公路的正常运行。本文在野外调查和观测的基础上,对该沟泥石流运动和冲淤特性,作了初步分析。
Document Type专著章节文集论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26992
Collection成都山地所知识仓储(2009年以前)
Affiliation中国科学院成都地理研究所
Recommended Citation
GB/T 7714
田连权. 西藏波密加马其美沟泥石流运动与冲淤特性. 重庆:科学技术出版社重庆分社,1981:90-93.
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