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| 作者 | 游勇 ; 柳金峰
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| 刊名 | 水利学报
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| 出版日期 | 2012-12-01
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| 卷号 | 43期号:s2页码:168-173 |
| 关键词 | 泥石流
金沙江
白鹤滩水电站
橄榄坝沙沟
排导槽
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| 其他题名 | Disaster characteristics and optimum cross-section design of drainage canal of debris flow in Ganlanba-sha Gully in the Baihetan reservoir area on the Jinsha River
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| 通讯作者 | 游勇
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| 中文摘要 |
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金沙江白鹤滩水电站库区右岸橄榄坝沙沟的泥石流活动具有松散固体物质以坡面崩塌补给为主、泥石流活动频率高和成灾快,冲刷强烈,危害严重等特征.在分析泥石流危害及活动特征的基础上,对橄榄坝沙沟泥石流排导槽的最佳过流横断面进行了分析研究,在已知排导槽排泄流量、排导槽纵比降的条件下,通过最佳泄流时排导槽的水力半径、排导槽特征深度的计算式,确定了橄榄坝沙沟排导槽的最佳过流断面尺寸.通过计算,确定在排泄频率为2%的泥石流时,橄榄坝沙沟设计斜墙“V”型排导槽的最佳过流横断面宽度为7.80m,深度为3.91m.
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| 英文摘要 |
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The Ganlanba-sha gully is a right branch of the Jinsha River, with a catchment area of 6.98 km2 and a total length of 5.32km. The precipitation of the gully is concentrated from May to October ac⁃counting for 90% of the year. The composition of landform,geology and rainstorm provides favorable condi⁃tion for the formation of debris flow. Through field observation,the characteristics of the debris flow in Gan⁃lanba-sha Gully can be described as viscous debris flow. The density of the gully is 2.0~2.2t/m3. The type of debris flow in the gully can be defined as rainstorm valley type with high density,high viscosity and high frequency. The major activity characteristics of debris flow are as follows:(1) The loose solid ma⁃terial for debris flow is mainly supplied by the slope landslip;(2) the frequency of the debris flow is very high;(3) rapid damage,strong erosion and great damage. Based on the analysis of the disaster characteris⁃tics,the optimal cross-section design method for the“trapezoid-v”shaped debris flow drainage canal of the Ganlanba-sha gully is discussed. The depths (h1 and h2) of the cross-section of the“trapezoid-v”shaped drainage canal and the optimal cross-section parameters using these two measurements are defined. In addi⁃tion, several formulae for calculating the cross-section measurements are deduced under optimal hydraulic conditions when discharge (Q),debris grain composition (D50) and longitudinal ratio (I) are known. Final⁃ly,the optimal dimensions for the cross-section of the Ganlanba-sha gully debris flow canal are determined.
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| 分类号 | P642.23
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| 收录类别 | EI
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| 资助信息 | 国家科技支撑计划项目(2012BAC06B02);国家973计划项目(2011CB409903) |
| 语种 | 中文
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| 公开日期 | 2013-12-17
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| 源URL | [http://ir.imde.ac.cn/handle/131551/6609]  |
| 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
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推荐引用方式
GB/T 7714 |
游勇,柳金峰. 金沙江白鹤滩水电站库区橄榄坝沙沟泥石流灾害及其排导槽的优化设计[J]. 水利学报,2012,43(s2):168-173.
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| APA |
游勇,&柳金峰.(2012).金沙江白鹤滩水电站库区橄榄坝沙沟泥石流灾害及其排导槽的优化设计.水利学报,43(s2),168-173.
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| MLA |
游勇,et al."金沙江白鹤滩水电站库区橄榄坝沙沟泥石流灾害及其排导槽的优化设计".水利学报 43.s2(2012):168-173.
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