| 叶陈雷,徐宗学.水工程调度与低影响开发协同作用下典型城市片区洪涝过程模拟——以福州市为例[J].水利学报,2022,53(7):833-844 |
| 水工程调度与低影响开发协同作用下典型城市片区洪涝过程模拟——以福州市为例 |
| Simulation of fluvial/pluvial flooding processes in a typical urban area considering role of low impact development (LID) measures and joint operation for hydraulic structures:Case study in Fuzhou City |
| 投稿时间：2022-03-28 修订日期：2022-07-13 |
| DOI：10.13243/j.cnki.slxb.20220220 |
| 中文关键词: 城市 洪涝 水文水动力模型 联合调度 海绵城市 |
| 英文关键词: urban|fluvial/pluvial flooding|hydrological and hydrodynamic model|joint operation|sponge city |
| 基金项目:国家重点研发计划项目(2017YFC1502701) |
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| 中文摘要: |
| 城市水工程调度与低影响开发措施,在应对城市暴雨洪涝中发挥了重要作用。本文以沿海城市福州主城区晋安河片区为例,构建一套综合的水文水动力模拟框架,从全域视角分析实时控制调度下的洪涝响应特征,并选择典型社区,从社区尺度下分析低影响开发措施与水工程调度协同作用下的洪涝过程。结果表明,全域尺度下,通过上游水工程联合调度可以有效控制下游内河水位,距离琴亭湖更近的晋安河主河道断面相比于下游断面,其断面水位变化受实时调度方案影响更为明显。在未考虑河道漫溢时,联合调度对河道水位的影响明显大于对内涝淹没的影响。在社区尺度下考虑河道漫溢时,低影响开发措施与水工程调度对内涝淹没的协同作用明显。在重现期为100 a、历时为2 h降雨下,协同治理前后,淹没面积由7.57 hm2减少至4.85 hm2;在苏迪罗台风降雨数据驱动时,协同治理前后,淹没面积由22.87 hm2减少至9.83 hm2。研究成果可以为城市防洪减灾应对措施提供一定的参考。 |
| 英文摘要: |
| Urban water engineering scheduling and low impact development (LID) measures play an important role in coping with urban storm flooding.The Jin'an River catchment in the downtown of Fuzhou City is selected as the study area in this paper,and an integrated hydrological and hydrodynamic simulation framework was proposed.The flooding response under real-time control scheduling is analyzed separately from the whole-area perspective,and the flooding process under the synergistic effect of low-impact development measures and joint scheduling is analyzed from the community scale by selecting typical communities.The results show that the water level of the down-stream inland rivers can be effectively controlled by joint scheduling of upstream water engineering at the whole catchment scale,and the main river cross-section of Jinan River,which is closer to Qinting Lake,is more significantly affected by the real-time scheduling scheme compared with the downstream cross-section.When river overflow is not considered,the effect of joint scheduling on river level is significantly greater than the effect on inundation.The synergistic effect of LID measures and water engineering scheduling on inundation is evident when considering river overflow at the community scale.The inundation area of typical blocks was reduced from 7.57 hm2 to 4.85 hm2 under the design rainfall with a return period of 100 years and a duration of 2 hours.When the observed rainfall data during typhoon "Soudelor" was used,the inundation area was reduced from 22.87 hm2 to 9.83 hm2.This study will provide an important reference for the measures of urban flood control and disaster reduction. |
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