Study Of Slope Protection Rainwater Infiltration And Design Optimization

The slope ecological protection engineering is along with the rapid development ofexpressway and the rise of a“restore natural, reengineering landscape”of the slope protectiontechnology. It is different with the traditional slope protection engineering technology, the sideslope ecological protection technology make full use of the characteristics of plants andcombining with the necessary civil engineering technology, it has engineering constructionand environmental protection of both purpose. To pay more and more attention toenvironmental protection today, ecological protection technology has become side slopeprotection trend and direction.In this paper, the domestic and foreign existing slope ecological protection theory andapplication of the relevant documents and materials on the basis of study and systematicallysummed up the vegetation of the selection and application in the slope, the importance of theecological protection and the theoretical basis, and then on the slope ecological protection areput forward three kinds of design optimization experiment research, namely: bag soil typehollow blocks perpendicular to the surface protection, and placed the change clearly bag soiltype hollow blocks level for the surface protection and placed change clearly geotextileprotective measures. Two of the bag soil type hollow blocks protection has the followingadvantages: (1) prevent the heavy rainfall erosion; (2) the distribution of the holes can avoidor reduce heavy rainfall infiltration through holes in the soil, so as to maintain the stability ofthe slope; (3) the low cost, easy construction, but the green issues. Geotextile protectivemeasures have several characteristics: solid earth & solid sand; prevent the rains washed out;reduce soil moisture to evaporate; simple structure; low cost; easy construction; water in thedrought; seepage control in the rainy season and vegetation green etc. And then, in the length160 cm by height 80 by width 40 wooden cases for the proposed within three designoptimization experiment as a lot of indoor simulation experiment, the water flow is 2.0 ~ 2.6mm（/min*m2）heavy rainfall condition, and a certain rainfall duration, the slope of the peak,middle, bottom of the moisture content of the soil several specific point, depicted the rainprotection measures in different infiltration under a curve, and using the finite elementmethod for the numerical simulation analysis, confirmed the slope protection measures indifferent stable performance and the rain infiltration under different conditions, and withoutany protection with bare slope is compared, and confirm the three kinds of the bad or gooddegree of protective measures, and finally, puts forward more reasonable, economy, moreapplicable to the condition of strong rainfall slope ecological protection method, for the slopeecological protection for reference.