Interception Effect of Stream Valley
详细信息
- 责任者：Wang Xueliang (Key Laboratory of Engineering Geomechanics ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Zhang Luqing
- 刊名：Journal of Engineering Geology
- 出版年：2011
- 卷期：19(3)
- 关键词：侵蚀地貌 ; erosion features ; 崩塌 ; avalanches ; 四川 ; Sichuan Province
- 页码：p.381-387
- 图表：3 illus., 2 tables, 19 refs.
- 分类号：1800
- 出版序号：1454
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
This paper studies the distribution characters of the whole and different volume groups’ rockfall of more than 200 blocks along the bended valley at Donghekou in Qinchuan Town. The rockfalls happened during the 2008 Wenchuan earthquake. The concept of rock blocks interception rate are given on the basis of statistical information. Then, the interception effect of the turning point and the rock blocks’ distribution in the valley are analyzed quantitatively from the point of the rock block number and the rock block volume. The conclusions are given as follows: the valley bend has the positive effect on controlling the following of the rockfall blocks; the larger the rock block,the bigger possibility intercepted at the point. From the view of the number, the bend turning point near the rockfall resource intercepted more rock blocks than that near the foot of the mountain.