Study and development on the diversion devices

• Main Authors: Lin Bor-Jang, 林柏璋
• Other Authors: Chun-E Kan
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/40451412679842946102

碩士 === 國立臺灣大學 === 農業工程學系 === 81 === Division works are one of the important irrigation facilities for water management. At present, there are several problems en- countered during implementation of water distribution in the se- ncodary canals of run-of-river irrigation system, namely, (1) unstable division with great variation, (2) manpower shortage due to outflow of farm labors from rural area, and (3) limited fund for full modernization.As a result, many divison structures , installed with gates for regulation of water, have not yet fu- lly functioned as they are expected. In consideration of such factors as canal, slope, head difference, flow condition, ener- gy,momentum and function of water distribution, this study focu- sed on the following three cases： (1) gated division structures commonly used, (2) well functioned and well proportioned divi- sion structure on Changyuan Canal System, and (3) specific and practical division structure on Chiatungchiao Canal System. A- fter investigating the water distribution procedures, studying the existing problems and making qualitative analysis, it was found that the well proportioned division structure could be further improved and then adopted for contral and reguration of irrigation in the canal system. Result of this study conld be u- sed as reference in the future design and maintenance improveme- nt of division structures of the run-of- river irrigation system. However, further study and quantitative analysis in this respect are worth to be down.