The Research On Hydraulic Calculation Method For Water Supply Network And The Exploration Of Application Software

Water supply engineering mainly includes three parts. They are water taking, water processing and the network system management. The functions of the network systems, which are the important municipal facilities, are to lead the clean water to thousands of household and supplly water for the citizen life and productim. Its cost can occupy 50%~80% of invertmont on total water supply engineering. Annually it neetes a large quantity of money to construct and maintain. Therefore, to understand the current situation of the network system and to obtain the information of its working data in time are necessary for city management.As everyone knows, the present society is a fast developing society. The tide of informationalization rolls up the world. The level of informationalization has become an important marking to measure modernization of a nation and a region. The municipal water supply network system is the city's life vein. It is a multi-target controlling work network system, with complicated construction , -tremendous scale and high randomness of water demand. To administrate the network system scientifically, it is necessary to do hydraulic analysis calculation and mode check calculation firstly and then to obtain the accurate working data in different cases. Based on this, the optimal design for reformation and extension of the network system can be carried out, and its fastness reaction ability to deal with sudden accident will increase.A great number of domestic and foreign experts have been studing studied on the calculation and analyses method for many years. Along with the development of network technique, the node equations and circuit equations were set up by using scheme method. The concept of " Depending on the information technique to reform traditional administration mode" has been widely accepted.Based on the researches and analyses of recent calculation principles of water supply network, this paper develops a program of network calculation and analyses. CIS technique has been successfully used in this case.This paper includes three parts:(1) Theory analysis.The mathematical model of the calculation for network is established and a appropriate solution is chosen.(2) With MapObject, a network analyses program in Visual Basic development environment is worked out.(3) Based on the geography information of a city, a water supply network is drawn and the network calculation and analyses is carried out.The first part and the second part are the core contents. The information resources share is the intention of nowadays city informationalization. Applying of this program will propel the procedure of scientific management of municipal networks.