Study Of The Reinforced Model And Its Application For Agricultural Ditch Slope With The Geo-textile Containers Paving

The local slip and collapse of drainage channel slope has become a prominent problem of farmland water conservancy supporting renovation project to be solved in arid and semi-arid areas of Northwest china.Taking irrigated areas of Ningxia as an example,the drainage channel is affected by sand flow,dry and wet circulation and the effect of the freeze-thaw cycle.The channel slope is easy to slide seriously,the cost is high and the effect is poor.In this thesis,by reading a lot of literature and field research,we put forward a new method of geotextile bagging farmland drainage ditch slope,through the experimental study of the relevant chamber,which provides the basis for the application and parameter design of geotextile bag technology in practice.Then,the design and construction process the geotextile bag lining farmland drainage ditch slope have been introduced,the typical prototyping test is carried out by selecting the typical grass piles slope,the masonry slope and the geotextile bag slope protection section,finally,using the stability analysis method of geotextile flexible piles,which is proposed by the literature.The influence of different horizontal width geosynthetic slope on the stability of slope slope slope with different slope height and slope ratio is calculated and analyzed,the slope stability coefficient of the geotextile slope protection model is calculated by using the Ferenius method,the stability coefficient of geotextile bag retaining foundation geotextile bag lining farmland drain slope is calculated by the simplified analysis method of the composite sliding surface.The main results and conclusions are as follows.(1)With the increase of soil moisture content,the shear strength of The soil shear strength and the friction coefficient of soil and geotextile have been decreased.The permeability coefficient of the geotextile bag composite structure can reach to 1.45*10-2 cm · s-1,which is far greater than the permeability coefficient of the soil.(2)The slope monitoring results of the masonry slope protection,grass soil pile slope protection and geotextile bag slope protection methods show that:the slope displacement of the geotextile slope is obviously smaller than that of the other two kinds of masonry,Its slope protection effect is better.(3)The same slope height and slope width,the stability safety coefficient decreases with the slope ratio.With the same slope height and slope ratio condition,the safety factor increases with the increase of the slope,the safety factor decreases with increasing slope height under the same slope ratio and slope width.(4)The slope stability coefficient of piles retaining geotextile bag slope protection mode is 2.18,the coefficient of slope stability without any lining mode is 1.05,the stability coefficient of geotextile support base under the geomembrane protection model is 1.56.