CN201125742Y

CN201125742Y - Expansion sheath type anchor rod

Info

Publication number: CN201125742Y
Application number: CNU200720300136XU
Authority: CN
Inventors: 倪永祺; 朱明星; 陈刚; 高一军; 陈春雷
Original assignee: China Gezhouba Group Co Ltd; China Gezhouba Group No 2 Engineering Co Ltd
Current assignee: China Gezhouba Group Co Ltd; China Gezhouba Group No 2 Engineering Co Ltd
Priority date: 2007-12-19
Filing date: 2007-12-19
Publication date: 2008-10-01
Anticipated expiration: 2017-12-19

Abstract

A swell sheathing type bolt is used for the underground cavity or the slope support engineering construction, which has the main structure, a swell sheath is coated on the outside of the bolt, a grouting and sealing interface is equipped on the swell sheath, and ring bearing ribs or equispaced convex dots are equipped on the exine of the swell sheath. The utility model adopts the structure with the bolt added with the swell sheath, wherein the grouting can be grouting, which can fast install and fix the bolt under the floppy or water seepage geologic condition, and acts the bolting function under the radial force common action of the swell sheath to the hole wall; the device seals different bolt bodies aiming at different operating objects, and satisfies different operating usage.

Description

Inflated sheath formula anchor pole

Technical field

The utility model relates to a kind of anchor pole that uses in underground chamber or slope support engineering construction, add the anchor pole of inflated sheath behind particularly a kind of anchor pole.

Background technology

At present, anchor bolt construction is finished in the working site substantially, at the bottom of adopting the injection slurries in the boring or quick-set being sent to the hole, insert anchor pole more directly or to stir the back fixing, or anchor pole uses method operations such as the fixing slip casting again of mechanical type.Under the geological conditions of comparatively soft or broken infiltration, because slurries are easy to run off, slip casting is difficult for full and can not brings into play anchoring effect fully.

Summary of the invention

The purpose of this utility model is to provide a kind of can overcome the deficiency of existing anchor bolt construction under the geological conditions of comparatively soft or broken infiltration, improves efficiency of construction; Or need in the mining not need to remove anchor pole under the geological conditions of back production, use the inflated sheath formula anchor pole of mechanical work easily.

The purpose of this utility model is achieved in that a kind of inflated sheath formula anchor pole, comprises anchor pole 1, the anchor pole 1 outer inflated sheath 2 that is with, and inflated sheath 2 is provided with slip casting envelope slurry interface 3.Inflated sheath 2 outer walls are provided with ring-type fin or uniform dome point.Inflated sheath 2 encapsulates anchor pole 1 entire length, or encapsulates on anchor pole 1 body portion length.

The inflated sheath formula anchor pole that the utility model provides, owing to adopted the structure that outside anchor pole, installs inflated sheath additional, can slip casting in the sheath, can be under the geological conditions of comparatively soft or broken infiltration, install apace, fixing anchor bar, hole wall is applied under the acting in conjunction of radial load in inflated sheath, in time play anchorage effect; This device also can encapsulate different anchor bar bodies at the different work object, satisfies different operation purposes.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a sectional view of the present utility model.

The specific embodiment

The utility model adopts following structure: a kind of inflated sheath formula anchor pole, comprise anchor pole 1, and the anchor pole 1 outer inflated sheath 2 that is with, inflated sheath 2 is provided with slip casting envelope slurry interface 3.Inflated sheath 2 outer walls are provided with ring-type fin or uniform dome point.Inflated sheath 2 encapsulates anchor pole 1 entire length, or encapsulates on anchor pole 1 body portion length.

Inflated sheath 2 of the present utility model uses the macromolecular material extruding to make, and its maximum gauge exists

About.Wall thickness can be according to grouting pressure, and grouting requires and decides, generally can be at 2～2.5mm.Can be shaped on ring-type fin or uniform dome point on its outer wall, increase the frictional force between inflated sheath and hole wall.

Anchor pole 1 can encapsulate in entire length or on partial-length, satisfies the different function requirements anchor pole and looks different work purposes change package length.The anchor pole inflated sheath of encapsulation can be made cross sectional shape shown in Figure 1 with mechanical means, and its maximum gauge is controlled at about Φ 43mm, and convenient on-the-spot drilling machine uses the drill bit pore-creating of Φ 48mm or Φ 52mm.

Anchor pole 1 length customizes according to designing requirement, produces in batches.The anchor bar body material can be according to manipulating object, and the single or combination manufacturing with different materials such as reinforcing bar, steel strand, high tensile steel wire, glass fiber, macromolecular fibre, carbon fibres respectively is to be suitable for the needs of different purposes.

Tail end slip casting envelope slurry interface 3 can be arranged in termination point of anchor rod or side, can install the backward stop valve additional on it during use.

When the utility model used, the job site was selected the inflated sheath anchor pole of purposes up to specification for use according to designing requirement.Drilling machine requires hole depth greater than about 10 centimeters of rock-bolt lengths with Φ 48mm or the pore-creating of Φ 52mm drill bit.The inflated sheath formula anchor pole that will meet design length is installed in the hole smooth-goingly.Grouting facility joint combines the progressively stable slip casting of pressure in accordance with regulations with the slip casting interface of anchor pole tail end.But the slurry material that the cement grout of slurries premixing or other adhere to specification, require and to add accelerating admixture at grouting facility joint secondary if any rapid hardening, when reaching authorized pressure, pressurize and slurry, the sheath of expansion can closely engage with hole wall, and can play anchorage effect immediately.

The macromolecular material of preparation sheath can be selected PVC or modified ABS for use.

Claims

1, a kind of inflated sheath formula anchor pole comprises anchor pole (1), it is characterized in that: the outer inflated sheath (2) that is with of anchor pole (1), inflated sheath (2) are provided with slip casting envelope slurry interface (3).

2, inflated sheath formula anchor pole according to claim 1 is characterized in that: inflated sheath (2) outer wall is provided with ring-type fin or uniform dome point.

3, inflated sheath formula anchor pole according to claim 1 and 2 is characterized in that: inflated sheath (2) encapsulates anchor pole (1) entire length, or encapsulates on anchor pole (1) body portion length.