Experimental Study On Rainwater Erosion And Slope Protection Mechanism Of Ecological Slope Protection With Bobbin

Concrete hollow block revetment has been widely used in slope ecological protection due to its good function of avoiding rainwater erosion.However,its problems such as large consumption of concrete,high labor intensity and cost of revetment construction still restrict its popularization and application.In order to solve this problem,it is proposed to adopt PVC pipe which is light,recyclable and has similar function of resisting rainwater erosion In order to effectively replace the concrete hollow block to solve the current problems of slope protection,it is necessary to establish a structural system which can reduce rainfall erosion and maintain the ecological environment.In view of this method,on the basis of the physical and mechanical properties of the test soil samples obtained through the indoor test,first of all,through the indoor simulated rainfall erosion test,the erosion amount of the slope of the tube type slope protection,the unprotected plain soil slope,the concrete hollow block slope protection and the anti erosion performance of the tube structure are obtained,and the relationship between the erosion amount of the tube type slope protection and the pipe diameter is obtained through comparison According to the relationship between the amount of rain erosion of these three types of slope protection,it is considered that the smaller diameter of the pipe and the same size of the hollow concrete block have little difference in the effect of rain erosion resistance.Then,through the indoor test of rainwater infiltration of the downpipe slope protection,the influence of the downpipe structure with different diameters on the rainwater infiltration of the slope is studied.Finally,through the observation and record of grass growth in the field for 45 days,the growth of Bahia grass in the tube structure is gradually flourishing,which proves the feasibility of the growth of vegetation in the tube structure,which can effectively combine the slope protection engineering and ecological environment protection,and provide the theoretical and practical basis for the combination of ecological protection and slope protection.