Study On Water Resource Utilizing And Planning Of Taolai Watershed

Taolai River is a great inland river in northwest area of China, passing Jiuquan city and Jiayuguan city in Gansu province. In this watershed, the conflict between water supply and demand is irreconcilable, the conversion between ground water and surface water is complex, and the dissension in water matters happens frequently. On one hand, with the developing of society and economy, changing in water supply and demand status, and the increasing water demand in economy developing and environment protecting, the scarcity, basic nature, and competition of water resource become increasingly serious, and series of social and economic problems are brought. On the other hand, because of unreasonable water distribution among upstream, midstream and downstream, the conflict between water supply and demand is aggravated, flow in downstream reduces year after year, ground water level falls continually, water quality is deteriorated worse and worse, and vegetation is deteriorated as well. The safety of basin environment is threatened directly, and the problems of water resource are main factors to restrict overall construction of well off society.In this paper with the quantity and character of water resource as beginning, the actuality and problems of water resource developing and utilizing are analyzed. Based on water-saving, pollution defending and environment protecting and constructing , water resource utilizing and water-saving layout are studied out, and the status of water supply and demand, water bearing capacity in district economy and society development are analyzed in different scheme. Then, countermeasure of water resource utilizing in near and future date is brought forward, through researching water-saving scheme and water resource reasonable developing scheme.By establishing basin water resource decision support system, the invert relationship of ground and surface water, and the circular law of water system are analyzed roundly. According to water quantity balance theory, equilibrium calculation and evaluation of ground water are studied, and ground and surface water are evaluated and planned unified. This surface and ground water uniteddispatching makes water resource utilized more efficiently and collocated more reasonably.Based on the principle of sufficiently utilizing local water resource, in terms of industry structure adjusted request and water resource collocated order, i.e. life water should be firstly ensured, next the major industry water, then the environment water should be improved as good as we can, tfye measures of water-saving and water pollution preventing all over the society are considered synthetically, fix quantity and time surface water distributed plan is pointed out, a limit of ground water exploitation in each area is given according to ground water variant level, and practical plans and suggestions on water resource exploiting, distributing, saving and protecting are presented.