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Corresponding Author

容洪流,男,博士,副教授.E-mail:ronghongliu@126.com

Abstract

This paper introduced the action mechanism of adopting conduit grouting reinforcement technology for slope reinforcement and protection, and analyzed the problems in calculating the anchoring force of grouting conduits by employing the traditional slope stability calculation method under the action of traditional reinforcement force. Meanwhile, the influence of such factors as the buried depth and water ash ratio of the grouting conduit on the conduit-soil bond strength was studied via the drawing test of the grouting conduit. The finite difference software FLAC3D was utilized to model the anchor body and its surrounding soil, simulate the deformation and stress distribution of the soil inside the soil during the drawing process, and derive the mechanical model of the anchor body interface based on theoretical analysis. As a result, the constitutive relation between axial drawing force and interface shear force was obtained. The results indicate that the properties of the slurry have a significant influence on the interface mechanical properties between the conduit and the original soil, as well as the anchoring depth, bearing capacity of external loads, and the stability of conduit anchoring. During the drawing process, the closer distance between soil and the anchor body leads to greater radial deformation increment of the soil, and the maximum stress exists within a certain range at the boundary between the anchor body and the soil. The error between the calculated drawing force based on the constitutive relation derived from theoretical analysis and the measured drawing force is very small, indicating that the calculation accuracy of this constitutive theory is sound.

Publication Date

8-18-2022

DOI

10.14048/j.issn.1671-2579.2022.04.002

First Page

6

Last Page

12

Submission Date

May 2025

Reference

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