CN210509243U - Full-length cemented anchor cable - Google Patents
Full-length cemented anchor cable Download PDFInfo
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- CN210509243U CN210509243U CN201921194220.7U CN201921194220U CN210509243U CN 210509243 U CN210509243 U CN 210509243U CN 201921194220 U CN201921194220 U CN 201921194220U CN 210509243 U CN210509243 U CN 210509243U
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Abstract
The utility model provides a full length anchor rope that binds, includes cavity steel strand wires cable body, anchor rope ground tackle, anchor rope tray and end thick liquid stopper, cavity steel strand wires cable body including be located the middle cavity corrugated metal pipe and distribute at outer skin steel wire, cavity corrugated metal pipe in the middle of be the slip casting through-hole, be provided with the support ring between cavity corrugated metal pipe and the outer steel wire, the support ring along cavity corrugated metal pipe length direction evenly distributed, still be provided with out the thick liquid hole on cavity corrugated metal pipe, the one end of cavity steel strand wires cable body pass through the steel nail sealed to install the lock ring on outer steel wire, this anchor rope simple structure, production technology is simple and convenient, can realize continuity trial production, production efficiency is high, low in production cost, installation convenient to use.
Description
Technical Field
The utility model belongs to the technical field of tunnel anchor rope support technique and specifically relates to exactly one kind can realize that wall rock glues fixed modification and anchor rope full length glues fixed anchor rope.
Background
The anchor cable support plays an important role in the support process of mines, tunnels and large buried depth coal roadways, and has the main characteristics of large anchoring depth, high bearing capacity and wide reinforcement range, can apply larger pre-tightening to the utmost, can obtain ideal support effect, and is the most reliable and effective surrounding rock reinforcement mode at present. The anchor cable support is characterized in that an anchor cable is installed in surrounding rock to form an anchoring body to apply pretightening force to the surrounding rock, the pretightening force forms a support stress field through stress diffusion of the surrounding rock, and the support stress field and a ground stress field jointly act to achieve the active support effect of the anchor cable, so that deformation of the surrounding rock is limited, and the stability of the surrounding rock is kept.
Under the working condition of relatively stable surrounding rock, the anchor cable support can play a good effect, but under the bad working conditions of some loose broken surrounding rocks, soft developing surrounding rocks and the like, the pretightening force of the anchor cable is difficult to effectively diffuse through the surrounding rocks to form a stress field, the support effect is not ideal, and meanwhile, as the anchor cable body is formed by stranding a plurality of steel wires, the support is broken due to shear stress generated by deformation and slippage of the surrounding rocks in the support process, the support is failed, and potential safety hazards are formed.
In view of the above, the national coal mine research institute provides a technical scheme for anchoring the full length of the anchor cable, and reinforcing and modifying the surrounding rock by means of surrounding rock grouting and the like. According to the thought, various grouting anchor cables are designed for engineering tests by related units, so that the method has a remarkable effect of improving the supporting effect under severe working conditions such as loose broken surrounding rocks and soft developing surrounding rocks, but still has the following problems.
Firstly, the common anchor cable and the side grouting pipe are adopted, and the main problems of the anchor cable are that the grouting pipe is difficult to install and the grout stopping effect is poor. Due to the technological requirements of anchor rope anchoring, the difference between the diameter of the anchor rope and the bore diameter of an anchor hole is generally 6-17mm, the unilateral gap is 3-7mm, the space is narrow, the installation of a grouting pipe is difficult, and the grouting pipe is easy to damage after the surrounding rock deforms, so that the grouting failure is caused. In addition, in order to realize effective grouting, plugging measures are needed to prevent the grout from flowing out, but due to the influence of a grouting pipe, effective plugging measures are difficult to apply, and the grouting effect is influenced.
And secondly, another structural form of the grouting anchor cable is a hollow grouting anchor cable, and the anchor cable adopts a basic structure of a middle hollow grouting pipe and an outer layer steel wire to perform grouting from the inside of the anchor cable. For the mode of side slip casting, need not secondary installation slip casting pipe, and the slip casting pipe receives outer steel wire protection not fragile, and the anchor rope outside does not have other components, realizes effective shutoff easily. However, the main problems of the anchor cable are that the product structure is complex, the production process is complicated, continuous production cannot be realized, the production efficiency is low, the production cost is far higher than that of a common anchor cable, and the popularization and application of the grouting anchor cable are influenced.
Disclosure of Invention
An object of the utility model is to provide a full length anchor rope that cements, this anchor rope simple structure, production technology is simple and convenient, can realize continuity trial production, and production efficiency is high, low in production cost, installation convenient to use.
The utility model provides a technical scheme that its technical problem adopted is: the full-length cemented anchor cable comprises a hollow steel strand cable body, an anchor cable anchorage device, an anchor cable tray and a grout stop plug, wherein the hollow steel strand cable body comprises a hollow metal corrugated pipe positioned in the middle and outer layer steel wires distributed on the outer layer, a grouting through hole is formed in the middle of the hollow metal corrugated pipe, a support ring is arranged between the hollow metal corrugated pipe and the outer layer steel wires, the support ring is uniformly distributed along the length direction of the hollow metal corrugated pipe, grout outlet holes are further formed in the hollow metal corrugated pipe, one end of the hollow steel strand cable body is sealed through a steel nail, and a fastening ring is mounted on the outer layer steel wires.
Preferably, the hollow metal corrugated pipe is a spiral corrugated pipe, and one end of the hollow metal corrugated pipe is sealed by a steel nail.
Preferably, the hollow steel strand cable body is uniformly distributed with a cage-shaped slurry outlet structure in the extension direction, a slurry outlet hole is formed in the hollow metal corrugated pipe of the cage-shaped slurry outlet structure, a support ring is arranged between the hollow metal corrugated pipe of the cage-shaped slurry outlet structure and the outer layer steel wire, and the support rings are distributed on two sides of the slurry outlet hole.
Preferably, the number of the outer layer steel wires is not less than three, and can be 6, 7, 8 or 9.
Preferably, the number of the grout outlet holes formed in the hollow metal corrugated pipe is more than or equal to two at the position of the cage-type grout outlet structure of the hollow steel strand cable body, and the grout outlet holes are arranged on the same side or symmetrically and alternately.
Preferably, the support ring is welded and fixed with the central corrugated pipe.
Preferably, the outer layer steel wire and the hollow steel strand cable body are twisted by a strander.
The utility model has the advantages that: compared with the prior art, the utility model discloses a full length anchor rope that cements, full length anchor rope that cements adopt special cavity steel strand wires cable body structure, and the cavity steel strand wires cable body forms for the preparation of continuity production, cuts off cavity steel strand wires cable body during finished product production, and components such as supporting grout stopping stopper, ejector sleeve, anchor rope tray, anchor rope ground tackle form full length anchor rope that cements. The production process has the advantages of simple product structure, simple production process, high production efficiency and low production cost.
Simultaneously, the middle part of the cable body of the anchor cable is made of metal corrugated pipes, the cable body is beneficial to keeping stable structure when being bent and deformed, and can be heated and shaped when being continuously produced, the cable body is guaranteed to be stable in structure, the metal corrugated pipes are provided with support rings, the outer steel wires are supported to form a cage-shaped structure, the metal corrugated pipes in the cage-shaped structure are provided with grout outlet holes, the outer steel wires form gaps, grouting liquid convenient to circulate smoothly, the full-length cementation effect of the anchor cable is formed, the metal corrugated pipes used by the anchor cable are spiral corrugated pipes, later-stage grouting equipment convenient to connect is used, the installation and use process of the anchor cable is basically consistent with that of a common anchor.
Drawings
FIG. 1 is a general structure diagram of the present invention;
FIG. 2 is a structure view of a hollow steel strand cable body;
FIG. 3 is an enlarged sectional view of the hollow steel strand cable body A-A;
FIG. 4 is an enlarged sectional view of a hollow steel strand cable body B-B;
FIG. 5 is an enlarged cross-sectional view of the hollow stranded wire cable body C-C;
FIG. 6 is a schematic cross-sectional view of a continuous hollow steel strand cable body;
the cable comprises a hollow steel strand cable body 1, an anchor cable anchorage device 2, an anchor cable tray 3, a grout stop plug 4, a hollow metal corrugated pipe 5, an outer layer steel wire 6, a support ring 7, a steel nail 8, a buckling ring 9 and a grout outlet hole 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
A full-length cemented anchor cable comprises a hollow steel strand cable body 1, an anchor cable anchorage device 2, an anchor cable tray 3 and a grout stop plug 4, wherein the hollow steel strand cable body 1 comprises a hollow metal corrugated pipe 5 positioned in the middle and outer layer steel wires 6 distributed on the outer layer, a grouting through hole is formed in the middle of the hollow metal corrugated pipe 5, a support ring 7 is arranged between the hollow metal corrugated pipe 5 and the outer layer steel wires 6, the support ring 7 is uniformly distributed along the length direction of the hollow metal corrugated pipe 5, grout outlet holes 10 are further formed in the hollow metal corrugated pipe 5, one end of the hollow steel strand cable body 1 is sealed through a steel nail 8, and a fastening ring 9 is mounted on the outer layer steel wires 6.
The main structure of the full-length cemented anchor cable is shown in fig. 1, and comprises a hollow steel strand cable body 1, an anchor cable anchorage device 2, an anchor cable tray 3, a grout stop plug 4 and other components, wherein the hollow steel strand cable body 1 is a special structure.
As shown in fig. 2, the hollow steel strand cable 1 is divided into two parts, namely a hollow metal corrugated pipe 5 and an outer layer steel wire 6, the wall of the hollow metal corrugated pipe 5 is provided with a slurry outlet 10, two sides of the slurry outlet are provided with support rings 7, the support rings 7 are fixed on the hollow metal corrugated pipe 5, and support the outer layer steel wire 6 to form a cage-shaped structure. The hollow steel strand cable body 1 is produced continuously, a steel nail 8 is plugged into the metal corrugated pipe 5 at one end of the cable body after the cable body is cut to length, and the outside of the metal corrugated pipe is fastened by a fastening ring 9.
The hollow metal corrugated pipe 5 of the hollow steel strand cable body 1 is a spiral corrugated pipe, so that the later grouting equipment is convenient to connect.
The hollow steel strand cable body 1 is periodically provided with 1 or more cage-shaped structures according to the length L of a finished anchor cable so as to facilitate the outflow of grouting liquid, and the number of the cage-shaped structures is 1 in figure 2.
The number of the slurry outlet holes 10 in the range of the cage-shaped structure is more than or equal to 2, the slurry outlet holes are arranged on the same side or symmetrically and alternately, and two slurry outlet holes are arranged in a symmetrical and alternate manner in the figure 2.
Preferably, the support ring 7 is welded and fixed on the metal corrugated pipe 5.
Fig. 3 is a cross-sectional view of a position a-a of the hollow steel strand cable body, which includes a metal corrugated pipe 5 and an outer layer steel wire 6. The number of the outer layer steel wires is more than or equal to 3, preferably 6, 7, 8 and 9, and 8 are shown in figure 3.
Fig. 4 is a cross-sectional view of a position B-B of the hollow steel strand cable body, a grout outlet 10 is formed in the wall of the hollow metal corrugated pipe 5, the support ring 7 is fixed on the hollow metal corrugated pipe 5 and supports the outer layer steel wires 6 to form a cage-shaped structure, and a gap is formed between the outer layer steel wires 6 within the range of the cage-shaped structure, so that grout can flow out conveniently.
Fig. 5 is a cross-sectional view of the C-C position of the hollow steel strand cable body, a steel nail 8 is inserted into the metal corrugated pipe 5, and the outer portion of the outer layer steel wire 6 is buckled and fixed by a buckling ring 9 to prevent the steel nail 8 from falling off.
The method for manufacturing the full-length cemented anchor cable comprises the following steps,
selecting a finished product of metal corrugated pipe, periodically punching the pipe wall of the corrugated pipe according to the designed length L of the finished product anchor cable, then welding and fixing the support rings 7 on the two sides of the slurry outlet hole, and taking up the cable by using a I-shaped wheel for later use after the welding is finished.
Selecting hot-rolled wire rods with the materials meeting the requirements, performing surface treatment to perform wire drawing, processing the wire rods into steel wires with the designed size, and taking up the wire rods for later use by using a spool.
Placing the processed hollow corrugated pipe and the processed steel wire on a pay-off reel of a stranding machine through I-shaped wheels respectively, wherein the metal corrugated pipe I-shaped wheel is placed on the pay-off reel closest to a strand twisting device, so that the metal corrugated pipe is prevented from being twisted and deformed when strands are twisted; the steel wire I-shaped wheels are sequentially prevented from being arranged on a subsequent pay-off reel, and the placing quantity is determined according to the quantity of the outer-layer steel wires of the hollow steel strand cable body. The stranding machine pulls the metal corrugated pipe and the outer layer steel wire to continuously advance, under the action of the stranding machine, the outer layer steel wire is stranded around the metal corrugated pipe to be formed, a hollow steel stranded wire rope body is formed, a supporting ring is welded and fixed on the metal corrugated pipe, and the outer layer steel wire forms a cage-shaped structure under the support of the supporting ring. The hollow steel strand cable body is subjected to prestress tensioning and thermal stability shaping to finally form the continuous hollow steel strand cable body with the periodic cage-shaped structure.
During production of the finished product, as shown in fig. 6, according to the period length L of the cage-shaped structure, selecting an appropriate position D, F to cut the hollow steel strand cable body to form a single anchor cable body, wherein the length is L, the DE section is a grouting bonding section, the EF section is an anchoring agent bonding section, the FG section is a next anchor cable body grouting bonding section, and the steps are sequentially repeated. And (3) plugging the metal corrugated pipe 5 from the cut-off F position by inserting a steel nail 8, and fastening the outside by adopting a buckling ring 9 to form the hollow steel stranded wire rope body 1. The anchor rope 2, the anchor rope tray 3, the grout stopping plug 4 and other components are matched to form the full-length cemented anchor rope.
When the anchor cable is installed and used in a full-length cementation mode, firstly, an anchoring agent is stirred according to an installation method of a common anchor cable to realize anchoring of an anchoring section, a grout stop plug 2 is plugged, supporting components such as an anchor cable tray 3 and the like are installed, and an anchor cable anchorage device 2 is used for tensioning and pre-tightening. And (3) communicating the grouting pipe with the metal corrugated pipe 5 in the hollow steel strand cable body 1, starting a grouting pumping system, pumping cement paste or other cementing materials into the metal corrugated pipe 5, enabling the cement paste to flow out of the grout outlet 10 and fill the outside of the hollow steel strand cable body 1, and realizing the full-length cementing of the anchor cable.
The hollow metal corrugated pipe 5 is a spiral corrugated pipe, and one end of the hollow metal corrugated pipe 5 is sealed by a steel nail 8.
The hollow steel strand cable body 1 evenly distributed cage type slurry outlet structure in the direction of the extension degree, a slurry outlet hole 10 is formed in the hollow metal corrugated pipe 5 of the cage type slurry outlet structure, a support ring 7 is arranged between the hollow metal corrugated pipe 5 of the cage type slurry outlet structure and the outer layer steel wire 6, and the support ring 7 is distributed on two sides of the slurry outlet hole 10.
The number of the outer layer steel wires 6 is not less than three, and can be 6, 7, 8 or 9.
The cage-type slurry outlet structure of the hollow steel strand cable body 1 is characterized in that the number of the slurry outlet holes 10 formed in the hollow metal corrugated pipe 5 is more than or equal to two, and the slurry outlet holes 10 are arranged on the same side or symmetrically and alternately.
And the support ring 7 is welded and fixed with the hollow metal corrugated pipe 5.
The outer layer steel wire 6 and the hollow steel strand cable body 1 are twisted by a strander.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but not limited to the product form and style of the above embodiments, any suitable changes or modifications to the device by those of ordinary skill in the art that are consistent with the present invention should fall into the protection scope of the present invention.
Claims (7)
1. The utility model provides a full length anchor rope that cements, includes cavity steel strand wires cable body (1), anchor rope ground tackle (2), anchor rope tray (3) and ends thick liquid stopper (4), its characterized in that: the hollow steel strand cable body (1) comprises a hollow metal corrugated pipe (5) located in the middle and outer steel wires (6) distributed on the outer layer, a grouting through hole is formed in the middle of the hollow metal corrugated pipe (5), a support ring (7) is arranged between the hollow metal corrugated pipe (5) and the outer steel wires (6), the support ring (7) is uniformly distributed along the length direction of the hollow metal corrugated pipe (5), a grout outlet hole (10) is further formed in the hollow metal corrugated pipe (5), one end of the hollow steel strand cable body (1) is sealed through a steel nail (8), and a fastening ring (9) is installed on the outer steel wire (6).
2. A full length anchor according to claim 1, wherein: the hollow metal corrugated pipe (5) is a spiral corrugated pipe, and one end of the hollow metal corrugated pipe (5) is sealed through a steel nail (8).
3. A full length anchor according to claim 1, wherein: hollow steel strand wires cable body (1) extension degree direction evenly distributed cage type play thick liquid structure to set up out thick liquid hole (10) on hollow corrugated metal pipe (5) of thick liquid structure is gone out to the cage type, set up support ring (7) between hollow corrugated metal pipe (5) and outer steel wire (6) of thick liquid structure are gone out to the cage type, and support ring (7) distribute in the both sides position of a thick liquid hole (10).
4. A full length anchor according to claim 1, wherein: the number of the outer layer steel wires (6) is not less than three, and can be 6, 7, 8 or 9.
5. A full length anchor according to claim 1, wherein: the device is characterized in that the position of a cage-type slurry outlet structure of the hollow steel strand cable body (1) is provided with more than or equal to two slurry outlet holes (10) arranged on the hollow metal corrugated pipe (5), and the slurry outlet holes (10) are arranged on the same side or symmetrically and alternately.
6. A full length anchor according to claim 1, wherein: the support ring (7) is welded and fixed with the hollow metal corrugated pipe (5).
7. A full length anchor according to claim 1, wherein: the outer layer steel wire (6) and the hollow steel strand cable body (1) are twisted by a strander.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921194220.7U CN210509243U (en) | 2019-07-27 | 2019-07-27 | Full-length cemented anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921194220.7U CN210509243U (en) | 2019-07-27 | 2019-07-27 | Full-length cemented anchor cable |
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| CN210509243U true CN210509243U (en) | 2020-05-12 |
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| CN201921194220.7U Active CN210509243U (en) | 2019-07-27 | 2019-07-27 | Full-length cemented anchor cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486064A (en) * | 2019-07-27 | 2019-11-22 | 山东焱鑫矿用材料加工有限公司 | A kind of overall length cementation anchor cable |
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2019
- 2019-07-27 CN CN201921194220.7U patent/CN210509243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486064A (en) * | 2019-07-27 | 2019-11-22 | 山东焱鑫矿用材料加工有限公司 | A kind of overall length cementation anchor cable |
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