Research On Information Construction In Hetao Irrigateion District

Hetao Irrigation District is the biggest one that uses one gate to bring in water to irrigate in China, covered with more than 8 million mu, of a long history and well equipped with irrigation and drainage canals. However, it is extensive management and the modernization level is very low. In 2002, with the development of the projects for saving water and the pilots of the information construction in senior irrigation districts, the work of the information construction is now in full operation. Discassing the problems on the technology and the equipment in the improving plan of the Beida Qingniao Firm that won the project, after analyzing and discussing the requirements of irrigation users and giving a sober analysis of the situation on the characteristics, advantages and disadvantages of the equipment, especially about the features of the irrigation district,in this paper presents the reforming opinion to make the project not only satisfied with all demands on the information construction but also be ahead possibly in a long time.The main problem to be discussed Use 3S(GPS,GIS and RS) in our irrigation service system. That means we can get multidimensional data with different structures, knowledge from different sources, different analysis methods and different models and tools. It is possible to use them in a unified way by GPS,RS and GIS to make timely scientific and accurate decision available. Based on 3S technique, integrating the multi-functions as transport, decision-making, monitor control and meeting discuss, let the management become more convenient and easy operation.and Use microwave system with a bandwidth of 5.8G to obtain a high speed, large capacity and stable communication in Hetao Irrigation District. There is a special high priority channel for the sensitive IP pack of QOS in the system. At the same time it permits the same delay. These advantages make the transport which needs QOS service such as image and voice perfect. All the base station in the system can be synchronized by GPS, and the synchronization can be used in eliminate either inner interception from modules in the system or exterior interception from other system in the same district.Water information collecting system is made up of three level deploy frame(GeneralBureau, Management Bureau and Management Station ) and one locale monitor system. It uses MOSCAD RTU and communicates by MDLC protocol (the system protocol of Motorola) MOSCAD RTU is in charge of giving remote deploy order, uploding collected parameter, dealing with alarm and measuring flux. Make best use of RS and GPS to collect information with high speed, and GIS to store space data and analysis terrain and network. Then we can make a system that can give suggestion on irrigation and drainage management. That means it can give support on the process of water use water distribute and water attempering, and predict water to be used to optimize plan in a short time. The incoming upriver water, the riverways and dykes in HeTao Irrigation District can be used to be stimulated in virtual environment in order to predict actual water level, which can improve the precision of flood forecast and make an earlier forecast. It is very likely to provide every department with better information service and provide decision-making system with reference.Using the computer network to connect all water quality monitoring stations in the irrigation district, utilizing remote sensing image data to monitor the projects and the pollution conditions timely and to realize the simulation of prediction and environment assessment, to provide the scientific foundation on the decision-making which control the pollution.Using the remote methods to monitor the soil erosion conditions which contain the foolish expenditure and the reclamation on the sloping land in the irrigation district, the bald mountains and the vertical cliffs caused by repairing roads and canals, some artificial and natural factors affected by the misconduct on the soil and stone material produced by the developing mines. Improving the science and technology content to keep the comprehensive treatment on soil and water conservation, to offer reasons for the environment planning, to protect the soil erosion effectively, and to keep the environment. With this system, it is possible to survey the situation of sanding and basification, and provide in - time reliable information for making virescence plan.