Tian Shan Irrigation Optimal Allocation Of Water Resources

According to the present situations and problems about water resource developing and utilizing in Tianshan irrigation district, the studies of water resources optimal allocation for Tianshan irrigation district are carried out, which aim at sustainable development of water resources, and effectively supporting the social, economic, and ecological environment sustainable and integrated development. The main research contents are as follows:1、Firstly, the socio-economic, ecological environment and the state of water resources in the irrigation region were introduced. According to collection information and the actual conditions in irrigation district, the available water supply and water demand were analyzed and calculated under different guaranteed rates of the quo years; and then the available water supplies and water demands were predicted for different planning years under different guaranteed rates. Combined with analysis results, the supply and demand balance of the water resources in the Tianshan irrigation district was analyzed.After supply and demand balance analysis, it was found that, in the current and future long period of time, the total water resources of the Tianshan irrigation district is not enough. As the population increase, rapid development of irrigation, industrial and agricultural, water demand growth for ecology in the Tianshan irrigation district, water is far from meeting the actual water level. The irrigation water shortage situation in Tianshan irrigation district certainly affects the socio-economic development and ecological environment.2、In order to ensure the sustainable development of economic and social in Tianshan Irrigation district, based on principles of effectiveness, fairness, systematicness, coordination and priority, a mathematical model for water optimal allocation of Tianshan irrigation district was established. The objective functions of the model and the constraint conditions were established combined with water supply and demand imbalance. According to calculated results about water supply and annual demand under different guaranteed rates, water resources optimal allocation was studied under different guaranteed rates and different planning years for Tianshan irrigation district, and some conclusions were obtained. After the optimal allocation, the irrigation district also was in lack of water.The water resource in Tianshan irrigation district is still shortage in the case of optimal allocation. Therefore, when formulate the sustainable development planning, it should be realized completely that, the shortage of local water resource has great influence on development of economic and social. It’s important to carry out water-saving projects, efforts to agricultural water-saving should be strengthen; sprinkler irrigation, micro-irrigation and drip irrigation technology must be spread; irrigation crop planting structure should be optimize to reduce agricultural water consumption; intensify within the irrigation district branch canals, lateral sub-lateral canals should be intensify to improve the canal water utilization coefficient; the industry structure should be adjusted to improve the level of industrialization; the water resource supply should be increased depending on South-to-North water diversion project or Yellow River water to make up for the lack of water resources in Tianshan irrigation district. The water usage must be in scientific principle, and transfer and surface water are used prior, which maximize the economic and social benefits with limited water resources to ensure the irrigation district of economic and social sustainable development. The above conclusions technically support for plan-making of the sustainable development of Tianshan irrigation district.