龙滩水库工程对红水河天峨站水文情势的影响分析
发布时间：2019-05-09 11:48
【摘要】：由于水文情势中的径流过程是影响河流生态系统改变的主要因素,有必要研究龙滩水库建坝前后径流过程的变化。依据建库前后天峨站1980年~2003年和2007年~2015年两个系列逐日径流实测数据,以IHA指标体系为基础,采用可变范围(RVA)法通过分析32个水文改变指标,评估了龙滩水库建设与运行之后下游水文情势特征的变化。计算结果表明:红水河天峨站水文情势综合改变度为70.49%,属于高度改变。水库修建后对逐月径流量、年极端流量及其出现时间、流量频次和延时、流量改变率和频度产生了显著影响。通过对建坝带来的流域水文情势改变情况的分析,为流域管理部门制定合理的水库生态调度方案提供决策支持。
[Abstract]:It is necessary to study the change of runoff process in Longtan Reservoir before and after dam construction because the runoff process in hydrological regime is the main factor affecting the change of river ecosystem. Based on the daily runoff data from 1980 to 2003 and from 2007 to 2015 at Tianao Station before and after the establishment of the reservoir, based on the IHA index system, the variable range (RVA) method was used to analyze 32 hydrological change indexes. After the construction and operation of Longtan Reservoir, the characteristics of downstream hydrological regime are evaluated. The results show that the comprehensive change degree of hydrological regime is 70.49%, which belongs to height change. After the construction of the reservoir, the monthly runoff, the annual extreme flow and its occurrence time, the frequency and delay of the flow, the change rate and the frequency of the flow have a significant effect. Based on the analysis of the change of hydrological regime caused by dam construction, the decision-making support is provided for the watershed management department to formulate a reasonable reservoir ecological dispatching scheme.
【作者单位】： 广西大学土木建筑工程学院;广西防灾减灾与工程安全重点实验室;广东省水利电力规划勘测设计研究院;
【基金】：国家自然科学基金资助项目(51669003,51009029) 广西重点研发计划项目(桂科AB16380284) 广西重点实验室系统性研究项目(2014ZDX012)
【分类号】：TV697.21
[Abstract]:It is necessary to study the change of runoff process in Longtan Reservoir before and after dam construction because the runoff process in hydrological regime is the main factor affecting the change of river ecosystem. Based on the daily runoff data from 1980 to 2003 and from 2007 to 2015 at Tianao Station before and after the establishment of the reservoir, based on the IHA index system, the variable range (RVA) method was used to analyze 32 hydrological change indexes. After the construction and operation of Longtan Reservoir, the characteristics of downstream hydrological regime are evaluated. The results show that the comprehensive change degree of hydrological regime is 70.49%, which belongs to height change. After the construction of the reservoir, the monthly runoff, the annual extreme flow and its occurrence time, the frequency and delay of the flow, the change rate and the frequency of the flow have a significant effect. Based on the analysis of the change of hydrological regime caused by dam construction, the decision-making support is provided for the watershed management department to formulate a reasonable reservoir ecological dispatching scheme.
【作者单位】： 广西大学土木建筑工程学院;广西防灾减灾与工程安全重点实验室;广东省水利电力规划勘测设计研究院;
【基金】：国家自然科学基金资助项目(51669003,51009029) 广西重点研发计划项目(桂科AB16380284) 广西重点实验室系统性研究项目(2014ZDX012)
【分类号】：TV697.21
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