交错齿槛槽排导粘性泥石流的试验
文献类型：期刊论文
| 作者 | 陈晓清
|
| 刊名 | 山地学报
 |
| 出版日期 | 2011-01 |
| 卷号 | 29期号:1页码:101-108 |
| 关键词 | 泥石流 排导槽 交错齿槛 排导特征 |
| 其他题名 | Experiment of Drainage Canal with Indented-sill for Viscous Debris Flow |
| 通讯作者 | 陈晓清 |
| 合作状况 | 国内 |
| 中文摘要 | 排导槽是一种结构简单、效果明显、用途广泛的泥石流防治措施,在总结东川槽、"V"型槽等现有排导槽槽型优缺点的基础上,结合一种新槽型——交错齿槛型泥石流排导槽展开试验研究。提出排导槽排导指数概念,即直接反应排导槽排泄能力的参数。利用室内水槽模型试验,通过改变交错槽纵比降、齿槛间距、夹角等参数,得出排导指数与上述参数的关系,试验结果表明:1.与东川槽相比,交错齿槛槽的排导能力有大幅度的提升,最大增幅达74%,表明交错齿槛有较强的挑流排泄能力,能有效解决东川槽等存在的淤积难题;2.不同比降下,交错槽主要设计参数组合存在差异,其中10%与15%比降下,60°齿槛间距为30 cm时,交错槽的排导指数最大,排导能力最强;而12%比降下,60°齿槛间距为40 cm为最优组合;3.小角度齿槛(60°)齿槛挑流排导能力较大角度(80°)更强,更适合坡降较小的排导槽;齿槛角度越大,齿槛的挑流能力有限,阻流作用越明显,对需控制流速及洪峰流量的泥石流,可考虑采用大角度齿槛。 |
| 英文摘要 | Drainage channel is one the most commonly useful debris flow countermeasures with such superiorities as simple structure and convenient construction.According to the construction experience of Dongchuan-type and "V-type",an indoor flume model experiment on drainage channel with indented-sill has been performed.The definition of drainage index was proposed,i.e.a parameter of showing drainage ability of channel.In the experiment,longitudinal slope,distance between two sill and angle of sills were changed to analyze the variation law of drainage index.(1) Compared with Dongchuan-type,the drainage ability of drainage canal with indented-sill increased largely with the top increment rate of 73%,that is,indented sill has obvious flow oriented effect,which is helpful to solve the problem of debris-flow siltation;(2) When the longitudinal slope is 10% or 15%,indented sill with an angle of 60 and a distance of 30cm can largely increase drainage ability of channel,whereas when longitudinal slope is 12%,the best combination is 60°and 40 cm,(3) Sills with small angle(60°) can be more fit for debris-flow with low longitudinal slope,however,sills with large angle(80°) can be more suited to debris-flow with steep gradient. |
| 学科主题 | 灾害学 |
| 分类号 | P642.23 |
| 资助信息 | 国家自然科学基金(41072270);国家重点基础研究发展计划“973”计划(2008CB425802)~~ |
| 收录类别 | CSCD |
| 语种 | 中文 |
| CSCD记录号 | CSCD:4216217 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://192.168.143.20:8080/handle/131551/3516]  |
| 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 | 陈晓清. 交错齿槛槽排导粘性泥石流的试验[J]. 山地学报,2011,29(1):101-108. |
| APA | 陈晓清.(2011).交错齿槛槽排导粘性泥石流的试验.山地学报,29(1),101-108. |
| MLA | 陈晓清."交错齿槛槽排导粘性泥石流的试验".山地学报 29.1(2011):101-108. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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