Aiming to investigate the hydrological response of LID (low impact development) construction for a typical urban river in semi-arid region, this paper applies the rainstorm flood management model (SWMM) and one-dimensional river water balance model to simulate the rainfall runoff process under different return periods and typical rainfall conditions. Taking the Bahe River Basin at the northern foot of Qinling Mountains as an example, this paper analyzes the variation of flood peak, flood volume, river water volume, flow velocity and the possible impact on water quality and environment after different LID measures. By comparing the simulation results before and after the LID measures in terms of flood peak, flood volume, it is found that the design storm with the return period less than 10 a may cause more river water volume to reduce. After the LID construction in the urban area, the underground water recharge by river in the riverside zone is reduced, and the flow velocity in the rubber dam reservoir area is slowed down. At present, when the pollutant discharge is not effectively controlled, the river water volume will be reduced after the LID construction in the urban area of the river basin, which is not conducive to the dilution and purification of pollutants in the river water body, and may lead to the aggravation of water pollution in the lower reaches of the river. This study demonstrates quantitatively the possible effects of LID construction on urban river runoff and water quality．It may help make more informed decisions on urban river flood management, especially for semiarid region.
Key words
northern foot of Qinling Mountains /
urban river /
LID construction /
hydrological response /
SWMM model
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1]夏军, 刘春蓁, 任国玉. 气候变化对我国水资源影响研究面临的机遇与挑战[J]. 地球科学进展, 2011,26(1):1-12.
[2]张建云, 宋晓猛, 王国庆,等. 变化环境下城市水文学的发展与挑战：Ⅱ.城市水文效应[J]. 水科学进展, 2014,25(4):594-605.
[3]王通. 城市规划视角下的中国城市雨水内涝问题研究[D].武汉：华中科技大学,2013.
[4]侯精明,郭凯华,王志力,等.设计暴雨雨型对城市内涝影响数值模拟[J].水科学进展,2017,28(6):820-828.
[5]VOROSMARTY C J, MCINTYRE P B, GESSNER M O, et al. Global threats to human water security and river biodiversity[J]. Nature, 2010,467:555.
[6]梅超, 刘家宏, 王浩, 等. 城市设计暴雨研究综述[J]. 科学通报, 2017(33):83-94.
[7]康玲. 流域水文模拟理论与方法研究[D]. 武汉：华中科技大学,2004.
[8]PRICE R K, VOJINOVIC Z. Urban flood disaster management[J]. Urban Water Journal, 2008,5(3):259-276.
[9]余江顺. 城市雨洪数值模拟研究与应用[D]. 辽宁大连：大连理工大学, 2017.
[10]刘俊. 城市雨洪模型研究[J]. 河海大学学报, 1997(6):20-24.
[11]黄国如, 黄晶, 喻海军,等. 基于 GIS 的城市雨洪模型 SWMM 二次开发研究[J]. 水电能源科学, 2011,29(4):43-45.
[12]许迪. SWMM 模型综述[J]. 环境科学导刊, 2014(6):23-26.
[13]MARSALEK J, DICK T M, WISNER P E, et al. Comparative Evaluation of Three Urban Runoff Models [J]. Water Resources Bulletin, AWRA, 1975,11(2):306-328.
[14]侯精明, 李东来, 王小军, 等. 建筑小区尺度下 LID 措施前期条件对径流调控效果影响模拟[J]. 水科学进展, 2019,30(1):45-55.
[15]梅超,刘家宏,王浩,等.SWMM 原理解析与应用展望[J].水利水电技术,2017,48(5):33-42.
[16]王润. 高分辨率城市内涝过程数值模拟研究[D].西安：西安理工大学,2018.
[17]段玲红. 基于SWMM 模型的秀山县 LID 改造雨水径流模拟分析[D].重庆：重庆交通大学,2018.
[18]赵沛. 基于 SWMM 的低影响开发措施对径流的调控作用模拟研究[D].河北秦皇岛：河北农业大学,2018.
[19]孙小军, 魏炳乾, 周孝德, 等. 西安市灞河流域水环境现状分析及治理对策[J]. 自然灾害学报, 2009,18(5):168-173.
[20]王战平. 灞河流域水文特性分析[J]. 水资源与水工程学报, 2009,20(5):176-179.
[21]朱玉平, 叶大振, 王锁萍，等. 混合智能算法在多约束优化问题中的应用[J]. 计算机应用研究, 2008, 25(4):1 039-1 042.
[22]西安浐灞生态区橡胶坝库区渗漏量研究[Z]. 西安：西安理工大学, 2010.
[23]马新萍, 白红英, 侯钦磊,等. 1959年至2010年秦岭灞河流域径流量变化及其影响因素分析[J]. 资源科学, 2012,34(7):1 298-1 305.
[24]吕继强, 刘俊, 孙夏利, 等.基于分布式水文模型GBHM 的河流闸坝调控研究[J].人民黄河, 2018,40(9):63-69.
[25]毕旭, 程龙, 姚东升, 等． 西安城区暴雨雨型分析[J]． 安徽农业科学, 2015,43(35):295-297,325．
[26]聂启阳, 吕继强, 孙夏利, 等． 土地利用变化影响的灞河流域潜在非点源污染风险时空变化特征[J]．水资源与水工程学报, 2009,30(5):80-88.
[27]西安市海绵城市建设实施方案[Z]. 西安：西安市人民政府，2016.
PDF(10018 KB)
鄂公网安备 42010602001274号 鄂ICP备14015464号-1