CN217354427U

CN217354427U - Tunnel resistance to deformation stock structure

Info

Publication number: CN217354427U
Application number: CN202220433643.5U
Authority: CN
Inventors: 管连永; 易康建; 刘复红; 张亮; 陆凌; 王翎鉴; 陈伟; 廖峻生
Original assignee: Sichuan Luhang Building Engineering Co ltd
Current assignee: Sichuan Luhang Building Engineering Co ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-09-02
Anticipated expiration: 2032-03-01

Abstract

The utility model discloses a tunnel resistance to deformation stock structure is from beginning to end in proper order: the packer comprises a packer, a polyurethane filling section, a high-strength packer and an expansion mortar filling section; the middle of the packer is provided with four holes for placing and fixing an expansion mortar injection pipe, an expansion mortar discharge pipe, a polyurethane filling pipe and a polyurethane packer filling pipe; two holes are arranged in the middle of the special high-strength packer and are used for placing and fixing the expansion mortar injection pipe and the expansion mortar discharge pipe. The utility model has reasonable design, and is convenient for respectively processing the solid ground and the plasticized ground; the positive bonding of the anchor rod and the improvement of the plastic foundation are ensured, and the tunnel is prevented from further deformation.

Description

Tunnel resistance to deformation stock structure

Technical Field

The utility model belongs to the technical field of the stock, especially, relate to a tunnel resistance to deformation stock structure.

Background

In the construction process of mine and highway tunnels, for ordered production, the tunnel top plate and two sides are prevented from collapsing due to the fact that a tunnel excavation area is too large; meanwhile, in order to ensure the working safety of a driving area, effective supporting and temporary reinforcement of the driving area are an essential important project, smooth proceeding of subsequent projects is facilitated, and the construction safety is ensured.

The tunnel in the partial mountain area is influenced by the covering layer and the confining pressure stress, and has the problem of perennial deformation. Conventional rock bolts are used as a countermeasure. Conventional rock bolts often do not provide optimal performance for a number of potential reasons. In this regard, we have developed a bolt bonding which is a combined mechanism for treating the improvement of the foundation, and which prevents the tunnel from further deforming while improving the plastic foundation, thereby achieving positive bonding of the bolt.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies existing in the prior art, the utility model provides a tunnel resistance to deformation stock structure.

The utility model discloses a tunnel resistance to deformation stock structure does from beginning to end in proper order: the packer comprises a packer, a polyurethane filling section, a high-strength packer and an expansion mortar filling section.

Four holes are arranged in the middle of the packer and used for placing and fixing the expansion mortar injection pipe, the expansion mortar discharge pipe, the polyurethane filling pipe and the polyurethane packer filling pipe. The tail end of a filling pipe of the polyurethane packer is positioned in the packer; the tail end of the polyurethane filling pipe is positioned in the middle of the polyurethane filling section.

Two holes are arranged in the middle of the high-strength packer and used for placing and fixing the expansion mortar injection pipe and the expansion mortar discharge pipe. The tail end of the expansion mortar injection pipe is close to the high-strength packer and is far away from the bottom of the anchor rod; the tail end of the expansion mortar discharge pipe is close to the bottom of the anchor rod and is far away from the high-strength packer, and the tail end of the expansion mortar discharge pipe is provided with a plurality of small holes.

Internal threads are arranged in the holes of the packer and the high-strength packer; the fixed expansion mortar injection pipe, the expansion mortar discharge pipe, the polyurethane filling pipe and the polyurethane packer filling pipe are provided with external threads, and the external threads are meshed with the internal threads.

Further, the position of the high-strength packer is adjustable.

The utility model has the advantages of:

the utility model relates to a rationally, through the mode of injecting inflation mortar and polyurethane, be convenient for handle solid ground and plastify ground respectively. At the solid surface, a highly fluid mortar is injected under pressure into the solid surface around the point to ensure adequate anchoring to the surface. The physical property of the abrasive particles is improved at the plasticized ground, and the deterioration of the plasticized abrasive particles is prevented. The positive bonding of the anchor rod and the improvement of the plastic foundation are ensured, and the tunnel is prevented from further deformation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-polyurethane packer filling pipe, 2-expansion mortar discharge pipe, 3-expansion mortar injection pipe, 4-polyurethane filling pipe, 5-packer and 6-high-strength packer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses a tunnel resistance to deformation stock structure is shown in figure 1, is from beginning to end in proper order: a packer 5, a polyurethane filling section, a high-strength packer 6 and an expanding mortar filling section.

A highly fluid mortar is injected under pressure into the solid ground around this point using the packer 5 to ensure positive anchoring to the ground. For a plasticized ground on the head side, more cracks and cuts are expected, and a ground improving material, not mortar, is used to improve the ground. The packer 5 is circular, and four holes are arranged in the middle for placing and fixing the expansion mortar injection pipe 3, the expansion mortar discharge pipe 2, the polyurethane filling pipe 4 and the polyurethane packer filling pipe 1.

The polyurethane packer filling pipe 1 is located at the end inside the packer 5, and the packer 5 is inflated and fixed by directly filling polyurethane.

The tail end of the polyurethane filling pipe 4 is positioned in the middle of the polyurethane filling section, and polyurethane is injected into the polyurethane filling section by using compact equipment, so that the physical performance of abrasive particles can be improved, and the deterioration of plasticized abrasive particles is prevented.

The high strength packer 6 is used to isolate two different packing materials between the plasticized surface and the fixed surface. The middle of the high-strength packer 6 is provided with two holes for placing and fixing the expansion mortar injection pipe 3 and the expansion mortar discharge pipe 2.

The end of the expansive mortar injection tube 3 close to the high-strength packer 6 is far away from the bottom of the anchor rod, and the high-fluidity mortar is injected into the solid ground around the point under pressure to ensure the sufficient anchoring with the ground.

The tail end of the expansion mortar discharge pipe 2 is close to the bottom of the anchor rod and is far away from the high-strength packer 6, and the tail end of the expansion mortar discharge pipe 2 is provided with a plurality of small holes for discharging expansion mortar, so that the filling condition can be monitored conveniently.

Furthermore, internal threads are arranged in the holes of the packer 5 and the high-strength packer 6; the fixed expansion mortar injection pipe 3, the expansion mortar discharge pipe 2, the polyurethane filling pipe 4 and the polyurethane packer filling pipe 1 are provided with external threads, and the external threads are meshed with the internal threads.

Furthermore, the position of the high-strength packer 6 can be adjusted, and the final position of the high-strength packer 6 is determined according to the expansion mortar amount required by the actual engineering.

The utility model discloses a concrete use of stock structure:

a sample was drilled to observe and identify the plasticized region. The length of the anchor rod and the position of the packer preventing the return of mortar or polyurethane are determined according to the area of the plasticized ground.

After drilling, the high-strength packer 6 is adjusted to the corresponding position, then the anchor rod is inserted, and grouting is carried out on the expansion mortar leading-in pipe 3. When the expansion mortar discharge pipe 2 has mortar flowing out, grouting can be stopped.

The packer 5 is filled after the injection of the expansion mortar is completed to prevent leakage of polyurethane when the anchor polyurethane is filled later. And meanwhile, the anchor rod is fixed in the anchor rod hole.

And after the steps are finished, polyurethane is filled between the two packers through the polyurethane filling pipe 4, and finally the whole anchor rod is formed.

Claims

1. The utility model provides a tunnel resistance to deformation stock structure which is characterized in that, from beginning to end is in proper order: the packer comprises a packer (5), a polyurethane filling section, a high-strength packer (6) and an expansion mortar filling section;

the middle of the packer (5) is provided with four holes for placing and fixing an expansion mortar injection pipe (3), an expansion mortar discharge pipe (2), a polyurethane filling pipe (4) and a polyurethane packer filling pipe (1); the tail end of the polyurethane packer filling pipe (1) is positioned inside the packer (5); the tail end of the polyurethane filling pipe (4) is positioned in the middle of the polyurethane filling section;

two holes are formed in the middle of the high-strength packer (6) and used for placing and fixing the expansion mortar injection pipe (3) and the expansion mortar discharge pipe (2); the tail end of the expansion mortar injection pipe (3) is close to the high-strength packer (6) and is far away from the bottom of the anchor rod; the tail end of the expansion mortar discharge pipe (2) is close to the bottom of the anchor rod and is far away from the high-strength packer (6), and a plurality of small holes are formed in the tail end of the expansion mortar discharge pipe (2);

internal threads are arranged in the holes of the packer (5) and the high-strength packer (6); the fixed expansion mortar injection pipe (3), the expansion mortar discharge pipe (2), the polyurethane filling pipe (4) and the polyurethane packer filling pipe (1) are provided with external threads, and the external threads are meshed with the internal threads.

2. A tunnel deformation-resistant bolt structure according to claim 1, characterized in that the position of the high-strength packer (6) is adjustable.