CN220620152U - Slope rock stratum reinforcing device - Google Patents

Abstract

The utility model relates to the field of slope strata reinforcement, and particularly discloses a slope strata reinforcement device which comprises an anchor steel pipe, an anchor head and an anchor rope, wherein the anchor steel pipe is detachably arranged on the anchor head, the anchor rope penetrates into the anchor steel pipe and is connected with the anchor head, the anchor steel pipe comprises an inner pipe part and an outer pipe part, the inner pipe part is concentric with the outer pipe part and is in bottom sealing connection, and a plurality of first grouting openings are formed in the outer pipe part. The utility model aims to solve the technical problem of how to reinforce an side slope rock stratum so as to ensure the anchoring effect of an anchor rope.

Description

Slope rock stratum reinforcing device

Technical Field

The utility model relates to the field of slope stratum reinforcement, and particularly discloses a slope stratum reinforcement device.

Background

Slope reinforcement refers to reinforcement of slope belts on both sides of roads, tracks, tunnels and the like, and the existing methods generally comprise grouting reinforcement, anchor rod reinforcement, soil nail reinforcement and prestressed anchor cable reinforcement. When the slope is higher and the potential fracture surface of the slope body is deeper, the slope body is generally reinforced by adopting a prestressed anchor cable, and the mode is increasingly applied.

For some weak rock layers, the thickness and the internal rock mass crack distribution are not clear, the anchoring section of the anchor cable is unstable, and the anchor cable is used for reinforcing the weak surrounding rock, so that the anchoring effect of the anchor cable is improved, and the stability of slope reinforcement is also a technical problem which needs to be solved urgently.

Disclosure of Invention

In view of the above, the present utility model aims to provide a slope strata reinforcement device, so as to solve the technical problem of how to reinforce the slope strata to ensure the anchoring effect of the anchor cable.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a side slope stratum reinforcing apparatus, includes anchor steel pipe, anchor head and anchor rope, anchor steel pipe can dismantle the setting on the anchor head, the anchor rope penetrates in the anchor steel pipe and is connected with the anchor head, anchor steel pipe includes interior pipe and outer pipe, interior pipe is concentric and bottom sealing connection with outer pipe, be provided with a plurality of first slip casting mouths along circumference on the outer pipe. The anchoring steel pipe is arranged into a double-layer structure, the double-layer structure comprises an inner pipe portion and an outer pipe portion, the inner pipe portion is used for subsequent grouting, and a space between the inner pipe portion and the outer pipe portion is used for reinforcing grouting of a rock stratum. The grouting space is used for grouting cement mortar, the grouting pressure is determined according to the classification of the rock stratum, and the grouting pressure is generally set between 0.1MPa and 2 MPa. After grouting the rock stratum, after the cement mortar is solidified, the whole rock stratum is reinforced by the cement mortar to form a whole, the stability of the rock stratum is improved, and the displacement and collapse phenomena of the rock stratum under the conditions of earthquake, water seepage and the like are avoided.

Optionally, a plurality of connecting rods are arranged between the inner pipe part and the outer pipe part, and a grouting space is formed between the outer pipe part and the inner pipe part. By adopting the scheme, the connecting rod can improve the connection performance of the inner pipe part and the outer pipe part, and the grouting space can be used for carrying out pressure grouting on the rock stratum.

Optionally, the top in slip casting space can be dismantled and be provided with the slip casting head, the lower part of slip casting head is double-deck cylindric, and the lower part of slip casting head can sealing connection in the slip casting space, and the upper portion of slip casting head is cylindric and communicates with the lower part. Because the grouting space is annular, cement mortar is not easy to pour into the grouting space, the grouting head is arranged in the scheme and can be communicated with the grouting space, the upper part of the grouting head is cylindrical, and the cylindrical grouting head is convenient to be connected with an external grouting pipeline.

Optionally, a blocking ring piece is arranged outside the outer pipe part, the blocking ring piece is arranged above the first grouting port, and the outer diameter of the blocking ring piece is equal to the maximum outer diameter of the anchor head. By adopting the scheme, the stratum under the blocking ring piece can be infiltrated into cement mortar. In this scheme can not carry out the slip casting to whole stratum, only select darker stratum slip casting, can reduce slip casting cost and time limit for a project, can also guarantee the reinforcement effect of stratum to a certain extent simultaneously.

Optionally, be provided with the second slip casting mouth on the outer wall of outer tube portion, the second slip casting mouth is located the top that blocks the ring piece, the inside in slip casting space can be slided and inserted annular closing plate, the upper end of closing plate is provided with the sealing rod, the closing plate can seal the slip casting space. By adopting the scheme, the sealing plate can seal the lower part of the grouting space, the step should be prior to the pressure grouting of the rock stratum, the purpose is to form a concrete plugging layer above the blocking ring piece, the plugging layer has the same effect as the blocking ring piece, and the plugging layer is used for sealing the outer part of the outer pipe part, so that the slurry flows upwards when the pressure grouting is avoided.

Optionally, an outer covering film is arranged on the outer wall of the joint of the outer tube part and the anchor head. After pressure grouting, the cement mortar can be solidified at the joint of the outer pipe part and the anchor head, so that the anchor steel pipe cannot be taken out later. The outer tectorial membrane that sets up in this scheme then can avoid cement mortar to a certain extent to get into the junction of outer tube portion and anchor head, guarantees that follow-up anchor steel pipe can follow the anchor head and go out.

The working principle and the beneficial effects of the scheme are as follows:

the basic principle in this scheme lies in carrying out pressure grouting to the rock stratum around through the slip casting space of anchor steel pipe, fills cement mortar into the gap of rock stratum, and under certain pressure, cement mortar can destroy the rock stratum, but whole can consolidate the rock stratum, especially the more rock stratum in gap. After the partial rock stratum is subjected to grouting solidification, the stability of the rock stratum is better, and the stability of the follow-up anchor cable is improved, so that the effect of reinforcing the whole side slope is improved. In the scheme, if better slurry is used for replacing cement mortar, the slurry is required to have certain repairing performance, the bonding solidification performance is good, and weak rock stratum can be bonded into a whole.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a schematic view of the structure of the anchor head and the anchor steel pipe;

FIG. 3 is a schematic view of the internal structure of FIG. 2;

fig. 4 is a schematic structural view of a sealing plate and a sealing rod.

The figures are marked as follows: anchor head 1, anchor steel pipe 2, slip casting head 3, first slip casting mouth 4, second slip casting mouth 5, stop ring piece 6, interior pipe 7, outer pipe 8, slip casting space 9, connecting rod 10, anchor rope 11, closing plate 12, sealing rod 13.

Detailed Description

The following is a further detailed description of the embodiments:

examples

A slope rock stratum reinforcing device is shown in fig. 1-4, and comprises an anchoring steel pipe 2, an anchor head 1 and an anchor rope 11.

The anchor steel pipe 2 can be detachably arranged on the anchor head 1, and the concrete detachable mode can be threaded connection. The anchor cable 11 penetrates into the anchor steel pipe 2 and is connected with the anchor head 1, the anchor cable 11 can be a common steel strand, and the connection mode of the anchor cable 11 and the anchor head 1 is very common and will not be repeated. The anchor steel pipe 2 includes interior pipe portion 7 and outer pipe portion 8, and interior pipe portion 7 and outer pipe portion 8 are concentric and bottom sealing connection, are provided with a plurality of first slip casting mouths 4 along circumference on the outer pipe portion 8, and first slip casting mouths 4 distribute in the well lower part of outer pipe portion 8. The outside of outer tube portion 8 is fixed and is provided with and blocks ring piece 6, blocks ring piece 6 and sets up in the top of first slip casting mouth 4, blocks ring piece 6's external diameter and equals the biggest external diameter of anchor head 1, blocks and can set up the wearing layer on ring piece 6's the outer wall. The outer wall of the outer pipe part 8 is provided with a second grouting opening 5, the second grouting opening 5 is positioned above the blocking ring piece 6, an annular sealing plate 12 can be inserted into the inner pipe part 7 in a sliding manner, the upper end and the lower end of the sealing plate 12 are both provided with sealing rods 13, and the sealing plate 12 can seal the inner pipe part 7. The upper sealing rod 13 is used for connecting the sealing plate 12, so that the sealing plate 12 can be conveniently conveyed downwards to a designated position, and the sealing plate 12 can seal the grouting space 9 below the sealing plate to prevent grout from entering the lower part and then entering the stratum below. The lower end sealing rod 13 is used for supporting the bottom of the grouting space 9 and is used for erecting the stable sealing plate 12. An outer coating film is arranged on the outer wall of the joint of the outer tube part 8 and the anchor head 1, and the outer coating film can cover the whole outer tube part 8. A plurality of connecting rods 10 are arranged between the inner pipe part 7 and the outer pipe part 8, and a grouting space 9 is formed between the outer pipe part 8 and the inner pipe part 7.

The top of slip casting space 9 can be dismantled and be provided with slip casting head 3, and the lower part of slip casting head 3 is double-deck cylindric, and the lower part of slip casting head 3 can sealing connection in slip casting space 9, and the upper portion of slip casting head 3 is cylindric and communicates with the lower part.

The specific implementation method comprises the following steps:

firstly, the anchor head 1 and the anchor steel pipe 2 are drilled into a calibrated depth by using drilling equipment, then the sealing plate 12 is fed into the grouting space 9, at the moment, the sealing plate 12 can seal the lower part of the grouting space 9, then the grouting head 3 is connected to the grouting space 9, cement mortar is poured into the grouting head 3, pressurization is not needed in the first pouring, the cement mortar forms a concrete plugging layer above the blocking ring piece 6, and the concrete plugging layer and the blocking ring piece 6 jointly plug the outer lower part of the anchor steel pipe 2 to form an independent space for subsequent pressure grouting. And then taking out the sealing plate 12, adding the grouting head 3, and performing pressure grouting on the grouting head 3, wherein the slurry can be poured into the rock stratum below the blocking ring piece 6, and waiting for the slurry to solidify after grouting is completed. Finally, the anchoring steel pipe 2 is taken out in a rotating way, cement mortar is poured into the inner pipe part 7 at the same time, an anchoring section is formed, and the stress of the anchor cable 11 is regulated.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the present utility model.

Claims (6)

1. A slope stratum reinforcing apparatus, its characterized in that: including anchor steel pipe, anchor head and anchor rope, anchor steel pipe can dismantle the setting on the anchor head, the anchor rope penetrates in the anchor steel pipe and is connected with the anchor head, anchor steel pipe includes interior pipe and outer pipe, interior pipe is concentric with outer pipe and bottom sealing connection, be provided with a plurality of first slip casting mouths along circumference on the outer pipe.

2. The slope formation reinforcement device of claim 1, wherein: a plurality of connecting rods are arranged between the inner pipe part and the outer pipe part, and grouting spaces are formed between the outer pipe part and the inner pipe part.

3. The slope strata reinforcing apparatus as claimed in claim 2, wherein: the top in slip casting space can be dismantled and is provided with the slip casting head, the lower part of slip casting head is double-deck cylindric, and the lower part of slip casting head can sealing connection in the slip casting space, and the upper portion of slip casting head is cylindric and communicates with the lower part.

4. A slope strata reinforcing apparatus as claimed in claim 3 wherein: the outside of outer tube portion is provided with the baffle ring piece, the baffle ring piece sets up the top at first slip casting mouth, and the external diameter of baffle ring piece equals the biggest external diameter of anchor head.

5. The slope formation reinforcement device of claim 4, wherein: the outer wall of the outer pipe part is provided with a second grouting port, the second grouting port is located above the blocking ring piece, the inner part of the inner pipe part is inserted with a sealing plate in a sliding mode, the upper end of the sealing plate is provided with a sealing rod, and the sealing plate can seal the inner pipe part.

6. The slope formation reinforcement device of claim 5, wherein: an outer covering film is arranged on the outer wall of the joint of the outer tube part and the anchor head.