IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2004  > Vol1 No.3
Channel response to gravel mining activities in mountain rivers
José Luis López S
Corresponding AuthorJosé LLS
AbstractThe removal of bed material from active river channels usually affects the bed profile of the streambed, causing progressive degradation upstream and downstream of the extraction site. These effects can extend for kilometers affecting hydraulic structures located in the vicinity of the river reach. In this paper, the geomorphic effects of gravel mining are reviewed and summarized. Some cases in Venezuelan streams are presented to illustrate the problem. To describe the processes of erosion and sedimentation in a gravel extraction pit, a recent developed mathematical model for the simulation of flow and sediment transport in gravel-cobble bed streams is applied to a hypothetical case of gravel mining in a river channel. A simple rectangular dredge pit is imposed as initial condition in the channel bed, and changes in bed elevations and grain size distribution of bed material are calculated by using the numerical model. The process of deposition within the pit, and the downstream and upstream migration of the erosion wave are well simulated by the model and closely resemble the phenomena observed in laboratory experiments. The response of the friction coefficient to the changes in flow and bed elevations shows the importance in modeling adequately flow resistance and sediment transport in gravel-cobble bed streams.
KeywordChannel Response Gravel Mining Venezuelan Cases
Document Type期刊论文
CollectionJournal of Mountain Science _Journal of Mountain Science-2004_Vol1 No.3
Recommended Citation
GB/T 7714
José Luis López S. Channel response to gravel mining activities in mountain rivers[J]. JOURNAL OF MOUNTAIN SCIENCE,2004,1(3):264–269.
APA José Luis López S.(2004).Channel response to gravel mining activities in mountain rivers.JOURNAL OF MOUNTAIN SCIENCE,1(3),264–269.
MLA José Luis López S."Channel response to gravel mining activities in mountain rivers".JOURNAL OF MOUNTAIN SCIENCE 1.3(2004):264–269.
Files in This Item:
File Name/Size DocType Version Access License
Channel Response to (229KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[José Luis López S]'s Articles
Baidu academic
Similar articles in Baidu academic
[José Luis López S]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[José Luis López S]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Channel Response to Gravel Mining Activities in.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.