Novel soft soil supporting extrusion type grouting anchor cable and use method thereof

Abstract

The invention discloses a novel soft soil supporting extrusion type grouting anchor cable and a use method thereof. The anchor cable is characterized by being composed of a drill cutter, a grouting pipe, a lower tray, an upper tray, steel bars, a piston type anchor buckle, a Z-shaped lock catch, an anchor cable body, a drill rod upper tenon, a drill bit lower tenon and the like; the piston type anchor buckle is located on the outer side of the upper tray inside a drill bit, and the upper tray and the lower tray can both move along a cavity in the drill bit; the steel bars are located on the outer wall of the lower tray inside the drill bit; one end of the anchor cable body is connected with the piston type anchor buckle on the outer side of the upper tray inside the drill bit, and the other end of the anchor cable body abuts against a locking device after grouting is finished; the grouting pipe is located on the inner wall of a drill rod, and the outer wall of the drill rod comprises the drill cutter; and the Z-shaped lock catch is located on the inner side of the drill rod upper tenon. The construction steps comprise drill rod and drill bit assembling; positioning; grouting; drillbit and drill rod separating; drill rod recycling; and anchor sealing. According to the anchor cable and the method, the structure is simple, the construction is easy and convenient, and compared with an existing grouting anchor cable, the novel anchor cable has an initial anchoring force and a good supporting effect during soft soil supporting.

Description

technical field [0001] The invention relates to a grouting anchor cable used for soft soil support in road engineering, side slope engineering, foundation pit excavation and other projects. Background technique [0002] Soft soil in engineering refers to cohesive soil whose natural void ratio is greater than or equal to 1, and the natural moisture content of the soil is greater than the liquid limit. Since the natural moisture content and natural pores of this type of soil are relatively large, this type of soil has shear strength. Unfavorable characteristics such as small size, low bearing capacity, and poor water permeability have a great impact on engineering construction. [0003] Because the single anchoring effect of the anchor cable is sometimes difficult to achieve the ideal soft soil support function, various grouting anchor cables have appeared on the market. The grouting anchor cables usually include anchor cable bodies, trays and locking devices. This kind of gr...

AI Technical Summary

Problems solved by technology

[0003] Because the single anchoring effect of the anchor cable is sometimes difficult to achieve the ideal soft soil support function, various grouting anchor cables have appeared on the market. The grouting anchor cable usually consists of an anchor cable body, a tray and a locking device. This kind of grouted anchor cable usually has no initial anchoring force, and the anchoring effect can only be performed after the grout solidifies, so its applicability is limited

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