Water Resources Argumentation Of Hei Ni-tian Reservoir Project In Nanhua County

Nanhua County is one of the serious water shortages in the county,The development and utilization of water resources in the rivers and lakes of Yijie River is low and in which Water resources are shortage,planning area water conservancy project development is limited.With the development of economy and the increase of population,water resources has become an important factor restricting the economic and social development of Nanhua County.Firstly,the paper introduces the general situation of the project and the present situation of water resources in the study area,The control area of the dam site is 27 km2,Run off area 1.34km2 of Lan Ni-jing Reservoir,Run off the area of it is 1.06km2,Shi Gou-jing reservoir run off the area is 4.34km2,the area from Shi Gou-jing reservoir site to the Hei Ni-tian reservoir is 20.26 km2.The average annual water yield is 7 million 294 thousand cubic meters,which is from Shi Gou-jing site to Hei Ni-tian reservoir site.The actual amount of water in the site of Hei Ni-tian reservoir is Interval water supply,Shi Gou-jing reservoir regulation of abandoned water,irrigation area of Shi Gou-jing reservoir returned water and discharge of ecological water of Shi Gou-jing reservoir.When P=75%,the actual amount of water in the site of Hei Ni-tian reservoir is 5 million 584 thousand cubic meters.On the basis of this,the rationality of the water use of the project is calculated 427.68 million cubic meters.At the same time,According to the relevant data of the actual development level in rural areas,the capacity of water resources on the rural development is fully considered,and the social and economic situation of the project area is forecasted.,the total amount of water demand in Hei Ni-tian reservoir is 464.24 million cubic meters.Moreover,Analysis of water supply and demand balance in 2030 years for planning level.,The conclusion shows that it is necessary to construct Hei Ni-tian reservoir to solve the water shortage problem in Nanhua County in 2030 year.Secondly,according to the amount of water,water supplyment of Hei Ni-tian reservoir,analysis the planning level of supplying water and the demanded situation,which argument water reliability and feasibility.According to the water quality report,the present water quality is III,which is satisfied for drinking water and irrigation water quality standards.In this thesis,the impact of water absorbed and water retreated in Hei Ni-tian reservoir is analyzed in detail.The results show that the reservoir hadly has an effect on the water resources and the surrounding environment,and has no disadvantageous effect on users.The Hei Ni-tian reservoir not only can solve the problem of rural living water supplement and farmland water supplement,but also can adjust flood in flood season,reducing flood burden of the downstream and improving the dry season in Downstream of Yijie River,which improves the ecological environment of Nanhua County.