Experimental Study On The Effect Of Slope Internal Drainage System To Rainwater Infiltration

In recent years,the requirements are getting higher and higher with the construction of highways, the slope of the implementation of prevention and drainage work is a major for highway slope. And now the slope construction requires not only good quality of the construction, waterproof and drainage ability, but also for the drainage facilities can mutual connected with nature and integrated into one, then it can forming a green barrier in the high way.At home and abroad, it often set some drainage facilities in the slope surface.Due to the drainage facilities exposure to the environment many years,the damage is inevitable, and the extent of the damage can not be overlook.So it provides a point of thinking that whether the drainage facilities should be interposed in the soil, combined the protective effect and drainage, then it can play the role of waterproof and drainage, and it also beneficial for the nature that the ecological drainage system applied in expressway.This paper introduces new types of slope drainage system. It can reduce the intrusion of the shallow soil internal moisture,which maintain the stability of shallow slope and the requirements of ecological aesthetics. At first, the author understood some methods of slope drainage from a large number of relevant literature about the research, and then recognized that the existed problems and the necessity of new systems of waterproof and drainage engineering.Based on this problems, this paper studies several new drainage systems about internal drainage to reduced rainfall and rain infiltration. Proved the effect of the new drainage system by tests, compared several existing methods with the new one,and then concluded the characteristics of the new internal drainage system.(1)The plastic plate system and diamond mesh drainage system can drainage in horizontal, vertical direction can impede the migration of watervapor under the actionof gravity.diamondshaped drainage systems can have isolation effect, drainage effect better.(2)The slope drainage system combined the slope protection system with drainage system, it can play the role of reinforcement effect in slope internal, and it also can play the effect of drainage.(3) Internal drainage system has the overall appearance, it doesn't affected the slope planting protection in the slope surface with the new drainage system, and it also provides plant root water supply, it is ecological.Putted forward the drainage system,which is creativity and bring implication in the practical engineering construction.And provide a question that creating a more optimal slope more perfect as a of waterproof and drainage system.