Study on impermeability and deformation characteristics of expansive soil composite wrapped by geotextile bags
Expansive soil has the characteristics of strong water absorption and expansion,large compressi-bility,and easy to produce cracks.It is harmful and needs to take corresponding measures to control and prevent.A treatment measure of wrapping expansive soil with geotextile bag is proposed,and the indoor model test is carried out to explore the effect of wrapping expansive soil with geotextile bag on the imper-meability and controlling expansion deformation of expansive soil.The test results show that after the rain test in the model box,the internal water content of the expansive soil wrapped in the geotextile bag is low-er than that of the expansive soil without the geotextile bag,and the anti-seepage effect is further improved after a layer of non-woven fabric sewn into the geotextile.Geotextile bag have a significant control effect on the expansion deformation of expansive soil after rain,and the deformation gradually decreases with the in-crease of overlying load.Therefore,the use of geotextile bagged expansive soil for slope protection can re-duce rainwater infiltration and limit soil expansion.It is feasible to control the expansive soil problem and has certain application value for the shallow sliding prevention of expansive soil slope.
万方数据
维普
