Stability Research Of High Steep Rock Slope By Anchor-Geomat Spraying Ecological Slope Protection Structure

From the view of geotechnical engineering,the mechanism of Anchor-GeomatSpraying(AGS) and slope stability in slope eco-engineering have been studied in thispaper.The main work are as following:(1) Important component of rock mass structures and rock discontinuity structuralplane of the high and precipitous rock slopes were detailed analysed.The point of viewthat rock mass structures, mechanical characteristic,stress state and rock engineeringclassifiction are emphasized. Starting on the nature of rock mass structure,conditionsof ecological restoration on high steep slope were clarified, and provised conciselyintrduction on bioengineering techniques for high steep slope protection. The merit anddemerit of the ecological restoration on traditional rock slope were also summarized,then presented a new technique-AGS.(2) Starting with component of eco-engineering structure for rock slopeprotection,analyzed mechanism of rock bolt and geomat,also technique of plantinggrasses by spraying sowing. Mechanism of AGS were analysed based on thethree-parts’ combination, and comparing to the similar technology to futher elucidatedits mechanism.(3) Summary of the influencing factors of rock slope,ecological slope,the paperroundly analyzed the influencing factors of the eco-engineering high and precipitousrock slope,and proposed parametricvariable above numerical simulation. Bycomparing the commonly used numerical simulation method to make sure thatFLAC3D were suitable for this study. In addition, to expound the role of vegetation,selectively analysed the vegetation root reinforcement on shallow stabilitymechanism.On the basis of fiber reinforced soil to confirm constitutive model of thevegetation lateral root-geomat-borrowed soil.(4) Numerical simulation processed by FLAC3D based on the strength reductionmethod. Calculation from the two angles of homogeneous and with weak surfacestructure, respectively discussed the different angle of slope, retaining structure, rockbolt spacing, vegetation form and also reinforcement layer thickness. Through thecorresponding slope stability factor of safety(Fos), analysed its internal law, and gavethe optimal design parameters on the example. Some conclusions which are valuable topractice are acquired.