| 1. | The technique protecting frost cracking and leakage of main canals in the irrigation area of ningxia
宁夏引黄灌区骨干渠道衬砌防渗抗冻技术 |
| 2. | A study of piecewise water distribution of the south main canal taking off from a reservoir in qu - jing irrigated area
曲靖灌区某水库南干灌分段配水研究 |
| 3. | The article introduces the design and construction of soil - cement key governing in main canal landslide
摘要文章介绍水泥土键在干渠滑坡治理中的设计和施工技术。 |
| 4. | Monitoring topography changes in shaoming coalfield ' s empty area in main canal of hebei of south - to - north water transfer
总干渠拟通过邵明煤田采空区地形变监测研究初探 |
| 5. | The aforementioned problems have n ' t been solved now as the greatest unsolved problems of the east - one main canal after it was completed
上述问题作为东一干渠竣工使用后的最大遗留问题一直没有得到解决。 |
| 6. | The prestressed drainage aqueduct of through open - web truss arch structure is widely applied to cross the main canal of the mrp . it is important and significative to study the aqueduct ' s structure design and reliability thoroughly
预应力下承式空腹桁架拱渡槽在总干渠排水建筑物中被广泛采用，其结构设计和安全可靠性是一个非常重要且值得深入研究的问题。 |
| 7. | During 1970s - 1980s , irrigation management department launched canal lining for main canal . irrigation management department initiated large scale canal lining project because of great government finacial investment on water saving project resconstruction since 1995
自七十至八十年代，开始对干渠进行防渗衬砌，进入九十年代特别是1995年以后，国家加大了节水改造的投入，灌区开始了较大规模的渠道衬砌工程。 |
| 8. | Through the studies of this paper , we effectively resolve these problems which are badly in need of settlement . this will make the east - one main canal make a due social and economic benefit and make great movement for agricultural development of the local area
通过本论文的研究，将有效的解决上述迫切需要解决的问题，使东一干渠灌区发挥其应有的社会及经济效益，这无疑对本地区的工农业发展起到巨大推动作用。 |
| 9. | Ningxia yellow river irrigation area is a big famous irrigation area in china and has over 2 , 000 years history , there are 17 main canals ( 1540 km length ) and 6 , 450 , 000 mu area , it plays a very important role in development of ecnomic and social of ningxia autonomous region
宁夏引黄灌区是我国著名的大型古老灌区，具有两千多年的灌溉历史。现有干渠17条，长1540km ，实际灌溉面积645万亩，是自治区经济和社会发展的重要基础。 |
| 10. | But some difficult problems occurred , in construction due to shortage of system experiment on anti freeze of main canal lining project , it is very essential to carry out related experiment research for providing instruction of engineering practice and theory surppot of anti freeze of main canal lining project
但由于缺乏对干渠衬砌工程防冻胀的系统研究，在工程建设中出现了一些难点。为了指导工程实践，为灌区干渠防冻胀提供理论支撑，为进一步优化工程设计方案提供帮助，结合工程建设，进行防冻胀试验研究。 |
