Roughness of slope surface and gully bed and its measurement method in a small watershred of mountainous areas

Luo Maosheng; 刘兴年; 罗宪

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Roughness of slope surface and gully bed and its measurement method in a small watershred of mountainous areas

更新时间：2023-11-28

- Roughness of slope surface and gully bed and its measurement method in a small watershred of mountainous areas
- Advanced Engineering Sciences Vol. 40, Issue 6, Pages: 57-62(2008)
- 作者机构：
  
  1. 四川大学水力学与山区河流开发保护国家重点实验室
  2. 四川大学水力学与山区河流开发保护国家重点实验室四川,成都,610065
  3. 重庆交通大学信息科学与工程学院重庆,400074
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2008，
  
  Published Online：23 May 2008，
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罗茂盛,刘兴年,罗宪.山区小流域坡面、沟道床面粗糙度与糙率测量方法探讨[J].工程科学与技术,2008,40(6):57-62.

Luo Maosheng, 刘兴年, 罗宪. Roughness of slope surface and gully bed and its measurement method in a small watershred of mountainous areas. [J]. Advanced Engineering Sciences 40(6):57-62(2008)
罗茂盛,刘兴年,罗宪.山区小流域坡面、沟道床面粗糙度与糙率测量方法探讨[J].工程科学与技术,2008,40(6):57-62. DOI：

Luo Maosheng, 刘兴年, 罗宪. Roughness of slope surface and gully bed and its measurement method in a small watershred of mountainous areas. [J]. Advanced Engineering Sciences 40(6):57-62(2008) DOI：

摘要

中文摘要: 在山区小流域中，坡面流糙率、沟道和山溪等的糙率由于缺乏天然水流实测资料，无法进行糙率率定，使得山洪爆发后，坡面流、沟道和山溪水流计算难以符合实际。本文根据分形理论和投影覆盖法的原理，建立了山区河流坡面流、沟道和山溪水流糙率直接测量方法。为了验证该方法的有效性，运用三维激光扫描仪，对山区河流河床粗糙度进行了精细测量。根据测量的卵石河床表面粗糙度的数据，建立分维方法与传统方法确定的床面面积之比与扫描间距之间的关系，进而运用本文提出的方法确定了该河道的糙率。结果表明，实测结果和实际符合良好。

Abstract

Abstract:n a small watershed of mountainous areas

it is difficult to calibrate roughness of slope surface

gully and stream

due to laking measured data of natural flow movement. As a result

when flash flood occurs

the flow pridiciton of slope surface

gully and streams disagrees with the acutal case. Based on the fractal theory and the projective covering method

this paper develped a method for measureing directly roughness coefficeint of overland flow

gully and stream flows. In order to verify the method

the bed roughness of mountain rivers was measured by means of 3-D Laser Scanner. Applying the measured data

the roughness of the river was determined using the method proposed in the paper.. It is shown that there is a good agreement with the computed and acutal values.

关键词

坡面流粗糙度分形投影覆盖法糙率测量

Keywords

overland flowroughness degreefractalprojective covering methodroughness measurement

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Related Institution

Huadong Eng. Corp. Ltd., PowerChina

College of Water Conservancy and Hydropower Eng., Hohai Univ.

Postdoctoral Workstation of Yellow River Eng. Consulting Co. Ltd.

Lab. of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources (Under Construction), Zhengzhou

Lab. of Ministry of Education for Geomechanics and Embankment Eng., Hohai Univ., Nanjing

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