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山区河流上下双丁坝回流区水沙特性浅探
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作者 谭志军 谭天琪 《江西建材》 2018年第1期151-152,共2页
在航道整治建筑物中,丁坝以不同的坝体结构或者布置形式被广泛利用到需要不同程度治理的航道中。对于山区河流应经济发展和河流稳定性的要求,与单丁坝相比较,上下双丁坝的布置形式能够更好地发挥它的优势,有更好的整治效果。但是双丁坝... 在航道整治建筑物中,丁坝以不同的坝体结构或者布置形式被广泛利用到需要不同程度治理的航道中。对于山区河流应经济发展和河流稳定性的要求,与单丁坝相比较,上下双丁坝的布置形式能够更好地发挥它的优势,有更好的整治效果。但是双丁坝的回流呈现的三维紊动特性比单丁坝的紊动特性还要复杂,而且下丁坝的阻拦造成上下双丁坝回流的泥沙淤积情况也更加严重,对河流形态和通航情况造成一定程度上的影响。所以对于山区河流上下双丁坝回流区的水沙特性的研究对于整治山区河流的航道的稳定性和通航条件都有十分重要的意义。本文在调查统计整治建筑物水毁情况的基础上,有针对性地进行了上下双丁坝清水定床试验,对上下双丁坝回流区的水沙特性进行了探索性的分析。 展开更多
关键词 上下双丁坝 流区划分 紊动特性 挟沙力
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Research on Water Resources Conservation of Mountain River Based on the Concept of Region Partition 被引量:4
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作者 LIU Yubang TAO Qingyu +1 位作者 LIANG Chuan WU Yong 《Journal of Mountain Science》 SCIE CSCD 2011年第4期582-591,共10页
Presently concepts and methods related to water resources conservation of mountain rivers are seriously insufficient,and its level is far from being adaptable to the development of a harmonious society.As mountain eco... Presently concepts and methods related to water resources conservation of mountain rivers are seriously insufficient,and its level is far from being adaptable to the development of a harmonious society.As mountain ecosystems play a key role in water resources conservation of mountain rivers,and the characteristics of mountain ecosystems and hydrologic features of mountain river follow strong temporal and spatial distribution,partition theory can be applied to the water resources conservation of mountain river.This theory observes the following partition principles:regional relativity,spatial continuity,integralcounty,meeting management needs,hierarchical principle,and comparability principle.And it lays equal emphasis on both water resources conservation and environmental protection,on both water quality conservation and water quantity protection,on the combination of water features,water cycle and water pollution.In the partition methods,index method and map superposition method will be applied in region partition.The example of region partition of water resources conservation in the upper reaches of the Yangtze River shows that the partition theory is practicable in water resources conservation of mountain rivers,and it provides a platform for future study in water resources conservation. 展开更多
关键词 Water resources conservation Mountain river Region partition Mountain ecosystems
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