This book is designed to run more than 40 years of irrigation projects to create a huge economic and social benefits. However, the lack of capital investment projects, projects of poor quality, with dilapidated, natural and artificial factors such as aging, declining efficiency projects, the project is far from being normal to play the normal benefits. Over the years, irrigation has not expanded irrigation area, but gradually shrinking degradation, according to Shidichakan and survey analysis, Yunshan irrigation following problems.
(1), channel seepage, landslides, severe landslides
(2), there is the aging canal building down, cracks and leakage problems
(3), part of the channel of drainage blockage, poor drainage,
(4), part of the channel of barriers and irrigation can not play
To maximize the benefits of irrigation projects, improving irrigation water use efficiency, expand and improve existing irrigation area and increase irrigated agricultural productivity, protect the agricultural and industrial economy, sustainable development, irrigation, irrigation water is necessary to build the backbone of engineering modifications.
In order to meet the design requirements, the status of irrigation canal system on the basis of trust connected to establish a new channel guide on the North Main Canal and establishing a new channel for dredging care guide, reinforcement, seepage, for Lining treatment, complete and perfect canal building. By design, calculated main channel, the North Channel Stake 0 +000 to 7 +700 and establish a new channel guide asked by four by four buildings designed by five other canal building design. All temporary buildings are five levels. Key irrigation and drainage structures, irrigation, flood control channel design standards in a 10-year return.
Keywords: irrigation, strengthening, anti-seepage.
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