| With the rapid development of Chinese economy, a great deal of infrastructure construction such as expressway, railway and high grade highway in mountainous area are carried out in China. At the same time, it is necessary for series of nature and artificial slopes to be treated for the purpose of safety of slopes. According to the geological conditions of the Qingdao region and urban construction development situation in recent years, the project proposes new complex ecological protection type for the actual situation of the rock slope, slope protection, soil conservation and environmental protection, it is Anchor-Geomat grass jetting on slope stabilization technology. The study focus on analyzing the reinforcement mechanism and soil water conservation mechanism of the technology. The main investigations and achievements are composed of following portions.(1)Anchor-geomat grass jetting on slope stabilization reinforcement mechanismThe anchoring role of woody vegetation root and the reinforced the role of the roots of herbaceous vegetation are analyzed in the microscopic. The maximum anchoring force T of the vertical roots of woody vegetation and the residual thrust TR balanced by the supporting role of horizontal roots are deduced. Takes anchor+herb roots-rock mass interaction mechanism as a foothold for anchor-geomat grass getting on slope stabilization technology, then the calculation formula of increased rock mass shear strength τRR. because of reinforced role of the roots of herbaceous vegetation and the calculation formula of increased rock mass shear strength τRA. due to reinforcement effect of the anchor are derived. Anchor+herb roots-rock mass interaction mechanics model is obtained by considering τRR. and τRA.(2)Soil and water conservation mechanism of anchor-geomat grass getting on slope stabilization technologyThe3D geomat, grass jetting, mat and plants working together of soil and water conservation mechanism are analyzed in theory. Mechanism of raindrop splash erosion mechanics and runoff erosion mechanism are analyzed in theory respectively, and calculation expression of the total rain erosion are deduced as the rainfall area is S and the rainfall intensity is P of the slope. Also resistance expression of inhibiting runoff under the combined effect of the3D geomat and vegetation root and resistance expression of inhibiting runoff with vegetation are derived, thus we can get the total resistance of slope runoff TR. when anchor-geomat grass getting on slope stabilization technology are used.(3)The study of application and design principles of anchor-geomat grass getting slope stabilization technologyThe technology is applicable to a wide range, it can be used in various types of soil slope and weathered rock slope, and it’s applicable slope ratio is from1:1.0to1:0.36. The design principles of the technology is proposed by analyzing slope stability and ecological engineering, and combining with the application of the technology in practical engineering, the specific construction techniques, quality controlled methods are proposed, also the design of the technology is given. |
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