A method for optimal design of anchor grouting parameters by studying the properties of expansive bonding materials in anchor grouting

Abstract

The invention discloses a method for optimally designing anchor rod grouting parameters through researching characteristics of expansible binding materials in anchor rod grouting. The method comprises the following steps: (1) the type of a rock mass used in the anchor rod grouting engineering is determined; (2) the applicable optimal expansivity is obtained; (3) a change curve between different expanding agent mixing amounts of the expansible binding materials and the expansivity is drawn; (4) a limit pulling resistance change curve under different grouting hole apertures, different expanding agent mixing amounts of the expansible binding materials and different anchoring lengths is drawn; and (5) the anchor rod grouting parameters are optically designed. The method for optimally designing the anchor rod grouting parameters through researching the characteristics of the expansible binding materials in anchor rod grouting, provided by the invention, can solve the problem of not researching the characteristics of the expansible binding materials in the anchor rod design and construction, optimizes anchor rods, and provides important basis for application of the expansible binding materials to the anchor rod design and construction.

Description

technical field [0001] The invention relates to the field of rock and soil anchoring, in particular to a method for optimizing the design of bolt grouting parameters by studying the properties of expansive bonding materials in bolt grouting. Background technique [0002] Geotechnical anchoring is one of the most important anchoring methods in the field of geotechnical engineering. Rock and soil anchoring has been used in slope support, foundation pit support, mine excavation support, tunnel and underground engineering stability, and abutment stability support, waterways, reservoirs, airports, anti-tilting, anti-floating structures and other engineering constructions. It has been widely used and has the advantages that other reinforcement methods can hardly replace. The rock-soil anchoring technology is to tightly anchor the structure and the rock-soil mass through the anchor rod buried in the rock-soil mass, relying on the shear strength of the anchor rod and the rock-soil ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for optimizing the design of anchor grouting parameters by studying the characteristics of the expansive adhesive material in the anchor grouting, which can solve the problem of failure of the expansive adhesive material in the design and construction of the anchor. Based on the problem of researching the characteristics of the anchor material, the anchor rod is optimized, which provides an important basis for the application of the expansion bond material in the design and construction of the anchor rod.

Images