Study Of A Large Open Channel Theoptimai Structure On The Quaternary Overburden Layer In North Xinjiang

With the further development of our national economy, the contradiction of waterresources shortage is increasingly prominent, the management and construction of water diversion project is particularly important. "Three building seven in", to water conservancy project, construction is the foundation, management is the key, is the purpose of use. Project management is good or bad, directly affect theefficiency levels, improper management may cause serious accident, bring inestimable loss to the country people’s life and property In the cold area of Northwest China, water engineering problems is more complex,prominent, especially in open channel. Therefore, the rational use of the existingwater diversion project, to maximize the project benefit, there is an urgent need to study, to solve the problem. Because of the influence of natural factors of water conservancy project is complex, meteorological, hydrological, engineeringgeological conditions, design scheme, construction quality, mode of operation and management of all may be the factors affecting the normal operation of thechannel, in the actual operation may be several or even one of these factorscaused.A large scale and long distance water diversion project in northern Xinjiang inter basin water diversion project, water channels including West trunk canal and thecanal winds grams, a total length of 329 km, which span 217 km west trunk canal;wind grams of trunk canal 112 kilometers in length. Because the water channelsacross the different geomorphic units, complex geological conditions, lithologychanges greatly, channels in the dispatching and operation process, influence of groundwater, geological conditions, seepage, cause serious damage of channel structure, repair engineering quantity increase greatly, annual only repair costsamounted to more than 5000 yuan.A preliminary analysis and research foundation for the way the section shapewater channel and foundation treatment of the Quaternary strata on the northern Xinjiang, according to the need of task, a large-scale water diversion project in the north of Xinjiang key selected as research object, analyze and Research onthe failure mechanism of emergence and form channels over the years, the problem of the boundary, from similar diversion channel project in section type,channel and foundation treatment scheme, combined with the engineering geological conditions along the diversion channel project, through indoor and outdoor related experiments and results analysis of the corresponding, recommended the optimum section structure consistent with the northernQuaternary Cover Area diversion channel.