摘要
为进一步发挥淤地坝在控制水土流失、拦泥淤地等作用的同时,高效存蓄、利用水资源,以陇东半干旱区淤地坝建设的典型流域——司家沟流域为例,采用比例推算法确定淤地坝建坝潜力,采用目标推算法确定流域适宜建坝规模,对流域内的2座骨干坝进行防洪能力校核,结果表明:司家沟流域建坝潜力为10座,其中骨干坝2座、中小型淤地坝8座;该流域适宜建坝规模为9座,其中骨干坝2座、中小型淤地坝7座,应对原有的2座骨干坝配备泄洪设施、提高防洪标准,以确保防洪安全。综合分析认为:半干旱区淤地坝建设的传统目标主要是拦沙和淤地造田,近年来流域水土流失综合治理成效显著,水土流失量减少,造成很多坝系达到设计淤积年限后仍然未淤满,具有拦蓄利用雨洪水资源的潜力,在确保防洪安全的情况下,充分高效利用淤地坝拦蓄利用雨洪水资源的潜力,对缓解半干旱区水资源危机有至关重要的作用,骨干坝控制区域的水资源利用率应达到30%、中小型淤地坝控制区域的水资源利用率应达到25%。
In order to further play the role of check?dam in controlling soil erosion,retaining the sediment and creating cultivated land and other functions,at the same time,efficiently storing and utilizing water resources,Sijiagou watershed,a typical watershed for the construc?tion of check?dams in semi?arid area of Longdong was taken as an example.The proportional push algorithm was used to determine the check?dam construction potential,and the target push algorithm was used to determine the suitable scale of the basin and the flood control capacity of the two check dams in the basin was checked,and the results show that there are 10 check?dams construction potentials in Sijiagou water?shed,including 2 large?scale check?dams and 8 small and medium?sized silt dams.The suitable check?dam construction scale is 9 in this wa?tershed,including 2 large?scale check?dams and 7 small and medium?sized check?dams.And the original two check?dams should provide flood discharge facilities and raise flood control standards to ensure the flood control safety.Comprehensive analysis believes that the tradition?al goal of silt dam construction in semi?arid areas is mainly to intercept sediment and increase cultivated land,but in recent years significant achievements in soil erosion control have made,and which have made the dam system reached the siltation period,and most of them re?mained unfilled,and have the potential to impound the rain and flood resources and use them.Under the premise of ensuring flood safety,ef?ficiently use of this part of the water resources will play a vital role in mitigating the water crisis in the semi?arid watershed.And water use ef?ficiency in large?scale check?dams control area should reach 30%,and in small and medium?sized check?dams control area should reach 25%.
作者
高雅玉
田晋华
李嘉楠
GAO Yayu;TIAN Jinhua;LI Jianan(Northwest Institute of Eco?Environment and Resources,CAS,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Gansu Institute of Soil&Water Conservation Sciences,Lanzhou 730000,China)
出处
《人民黄河》
CAS
北大核心
2019年第9期102-105,109,共5页
Yellow River
基金
国家重点研发计划项目(2017YFC0504704)
陇原青年创新人才扶持计划项目(甘组通字[2014]93号)
甘肃省水利厅水资源费项目(甘财农[2017]293号)
甘肃省水利科技推广项目(甘水科外发[2013]293号,[2014]223号,[2015]55号)
关键词
淤地坝
建坝潜力
水资源高效利用
防洪安全
司家沟流域
check-dam
check-dam building potential
efficient use of water resources
flood protection safety
Sijiagou Watershed
作者简介
高雅玉(1985—),女,天津人,高级工程师,硕士研究生,主要从事水资源与水土保持方面的研究工作,E-mail:gaoyayu19851231@163.com。
