城西湖蓄洪区及周边洪水资源综合利用研究

发布时间：2018-08-31 13:50

【摘要】：水资源短缺是世界性难题,是阻碍当前社会经济发展的主要矛盾之一。淮河流域安徽沿淮淮北地区,虽毗邻淮河,但由于区域水文特征和特殊的气候类型,导致水患水旱灾害交替频发。在现代水利发展的不断建设之下,淮河流域防洪体系不断健全和壮大,区域抵御威胁性洪水的能力逐步提高,此外随着社会经济和人民生活水平的不断提高,水资源的供需矛盾日益凸显,旱灾对人民的生产生活影响愈来愈大。所以,使用合理科学的方法进行洪水资源综合利用是缓解干旱缺水行之有效的办法。在城西湖蓄洪区蓄滞淮河汛末洪水资源用于综合利用的研究方案,对区域水文数据、用水资料、城西湖区天然来水、现状需水和未来需水情况进行综合分析,通过水量供需平衡方程,以时历列表法计算并确定兴利库容和蓄水位,对比选择合理的引淮水位置和建筑物规模,确定最终的综合利用方案。利用数字高程模型、地学分析方法和下垫面的遥感影像数据资料、土地利用情况,采用ArcGIS软件分析最高蓄水位下的淹没影响。继而利用淮河河道断面资料及2003年淮河洪水过程线,利用MIKE 11软件建立一维水动力模型,添加蓄水方案下的极端泄水条件,对比泄水前后洪峰水位和峰现时间的变化,分析方案的防洪风险影响。最后,建立地区环境影响指标体系,从自然生态环境影响和社会环境方向采用层次分析法评估方案对区域环境的影响。文章主要工作得出如下的研究结论：(1)建立城西湖蓄洪区洪水资源综合利用的引蓄水方案,当蓄水位达20.5 m时,其对周边地区的直接供水保证率达95%以上；(2)在蓄水方案的基础上,较19.5 m蓄水下的水面覆盖增加了淹没区域面积14.7km2,淹没范围里滩地属性的土地占较高比例,淹没损失较小；(3)极端不利条件下腾空蓄满库容,对淮河下游正阳关洪峰水位的影响不超过0.03 m,洪峰提前的时间不超过2h,所以蓄水后在很低的影响条件下便能恢复未蓄水条件,基本不影响城西湖蓄洪区在极端天气和淮河较大洪水时启用的时机。(4)蓄水方案对自然环境、社会环境的负面影响较小,正面积极影响较高,方案可行。
[Abstract]:The shortage of water resources is a worldwide problem and one of the main contradictions hindering the development of social economy. Anhui Province along the Huaihe River in the Huaihe River Basin is adjacent to the Huaihe River, but because of the regional hydrological characteristics and special climatic types, floods and droughts occur frequently alternately. In addition, with the continuous improvement of social economy and people's living standards, the contradiction between supply and demand of water resources has become increasingly prominent, and the impact of drought on people's production and living has become greater and greater. Therefore, the use of reasonable and scientific methods for comprehensive utilization of flood resources is to alleviate drought. In the research scheme of comprehensive utilization of flood resources of Huaihe River at the end of flood season stored and detained in Chengxi Lake flood storage area, the regional hydrological data, water consumption data, natural water supply in Chengxi Lake area, current water demand and future water demand are comprehensively analyzed, and the Xingli Reservoir is calculated and determined by the time-table method through the balance equation of water supply and demand. The final comprehensive utilization scheme is determined by comparing the water level of the Huaihe River diversion with the water level of the reservoir and the scale of the building. The submergence effect under the highest water level is analyzed by using the digital elevation model, the geographic analysis method, the remote sensing image data of the underlying surface, the land use situation and the ArcGIS software. According to the flood process line of Huaihe River in 2003, a one-dimensional hydrodynamic model was established by using MIKE 11 software, and the extreme discharge conditions under the storage scheme were added. The changes of peak water level and peak present time before and after discharge were compared, and the flood risk impact of the scheme was analyzed. The main work of this paper is as follows: (1) Establish a comprehensive utilization scheme of flood resources in Chengxi Lake flood storage area. When the water level reaches 20.5 m, the guaranteed rate of direct water supply to the surrounding area will be above 95%. (2) On the basis of the water storage scheme, the guaranteed rate of direct water supply to the surrounding area will be above 95%. Compared with 19.5 m underwater storage, the area of submerged area increased by 14.7 km 2, and the land of beach land in the submerged area accounted for a higher proportion, and the loss of submerged area was smaller. (3) Under extremely unfavorable conditions, the effect of emptying storage capacity on flood peak water level of Zhengyangguan in the lower reaches of Huaihe River did not exceed 0.03 m, and the time of flood peak advance did not exceed 2 h. Under the condition of low influence, it can restore the condition of no water storage, and basically does not affect the time when the flood storage area of Chengxi Lake is opened in extreme weather and Huaihe River is relatively big flood. (4) The water storage scheme has less negative impact on the natural environment and social environment, and has a higher positive impact, so the scheme is feasible.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TV873;TV213.9

【参考文献】