Vízügyi Közlemények, 1984 (66. évfolyam)
2. füzet - Gilyénné Hofer Alice-Domokos Miklós: A bővített Balaton-vízgyűjtő vízkészlet-gazdálkodásának szimulációs modellej
256 G ily énné H of er A. és Domokos M. живании заданного уровня или подачи воды в пределах 4-х подсистем. В то же самое время ограничение попусков воды из Балатона через канал Шио (в интересах судоходства и ловли угря) благоприятно влияло бы на поддерживание уровня воды в озере, предписанного исходя из интересов рекреационного использования. Оправдавшую себя таким образом модоль в дальнейшем будет использоваться для исследования и симуляции различных вариантов принятия решений по развитию и эксплуатации водохозяйственной системы Балатона. * * * A model for the simulation of water resources development in the extended catchment of Lake Balaton by Mrs. A. GIL YÉN-HOFER and M. DOMOKOS The purpose of this investigation was to prepare a model to simulate the operation of a water management system and check its validity and accuracy. The area selected consisted of the direct catchment of Lake Balaton (5775 km 2) together with the planned and partially constructed Little Balaton (a protecting system), and of the neighboring catchment of the brook of Séd (483 km 2) with the planned reservoir of Berhida - forming an extended catchment of Lake Balaton. The reservoir is potentially supplied by water from the lake itself. The problem was solved by the development of a previous model of the same authors (Fig. 2.). The new model considered the extended Balaton catchment as a unity (Table I.) consisting of 5 coordinated subsystems. The motion of water inside the system was deterministically simulated with a time increment of 1 month beginning with the waterhousehold-components in the individual subsystems, while satisfying as many social requirements as possible appearing in the form of stabilization of the water level, the satisfaction of water demand, optimum release of water, etc. If these criteria cannot be satisfied in certain time periods, limitation of the water use is introduced by the model according to a predetermined preference or queuing (Figs. 3 and 4.). Runs of the model with 50 to 60 year-long data resulted in obtaining average values of the satisfaction of different water demands in each subsystem. The computer program of the model - in this particular case - needed 60 years (1921-1980) of input dicharge data and predicted estimated demand and storage for 1990 (Fig 5.). Concrete results are presented in Table II. but the most valuable achievement was the perfect functioning of the system. The model was also applied to 4 additional alternatives. According to Table III., water diverted from Lake Balaton towards the reservoir of Berhida had barely any influence on the probability of water level stabilization of the Lake and on the satisfaction of the demands in 4 subsystems. Nevertheless, a restriction of water releases to help navigation and fishing of eel on River Sió would improve substantially the chances to keep the water level in the Lake in a desired range from the point of recreation. The model - being proved capable for action - will be used for the investigation of additional alternatives - in development and operation - of the water management system of Lake Balaton. * * *
