CN212428897U - Segmented recyclable high-strength prestressed anchor cable - Google Patents
Segmented recyclable high-strength prestressed anchor cable Download PDFInfo
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- CN212428897U CN212428897U CN202021761536.2U CN202021761536U CN212428897U CN 212428897 U CN212428897 U CN 212428897U CN 202021761536 U CN202021761536 U CN 202021761536U CN 212428897 U CN212428897 U CN 212428897U
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Abstract
The utility model relates to a sectional recyclable high-strength prestressed anchor cable, which comprises an anchor cable body, a resin anchoring agent, an anchor cable tray and an anchor cable lock; the anchor cable body comprises an anchoring section anchor cable and a free section anchor cable; the anchor cable body is formed by fixedly connecting a plurality of sections of steel strands, and the anchor section anchor cables are bonded and fixed in surrounding rock at the bottom of the anchor hole through a resin anchoring agent; the free section anchor cable is formed by connecting a plurality of sections of steel strands through a sleeve; the free section anchor cable is also connected with the anchoring section anchor cable through a sleeve; the outer end of the free section anchor cable is locked outside the anchor hole through the installation of the anchor cable tray and the anchor cable lock, and the segmented recyclable high-strength prestressed anchor cable is simple in structure and improves economic benefits.
Description
Technical Field
The utility model relates to a segmentation recoverable high-strength prestressed anchor rope.
Background
The tunnel face of the weak surrounding rock tunnel is easily subjected to construction action and quickly enters an unstable state, so that large supporting resistance needs to be quickly provided to maintain the stability of the tunnel face. The traditional anchor rods usually used for maintaining the stable face need to gradually provide larger and larger supporting resistance along with the gradual deformation of surrounding rocks, and the field requirements cannot be met.
Along with the tunnel face advances forward, excavation at every turn all will cut off face stock, and traditional reinforcing bar stock is difficult to be cut off. Although the glass fiber reinforced plastic anchor rod is easy to cut, the low shear strength is not beneficial to maintaining the stability of the tunnel face. Moreover, the cut anchor rods or anchor cables are all reduced into building rubbish, so that high-value recycling is difficult.
SUMMERY OF THE UTILITY MODEL
In view of prior art's is not enough, the utility model aims to solve the technical problem that a segmentation recoverable high-strength prestressed anchorage cable is provided, not only simple structure, the cost that reduction anchor rope that moreover can be to a great extent was strutted promotes economic benefits. .
In order to solve the technical problem, the technical scheme of the utility model is that: a segmented recyclable high-strength prestressed anchor cable comprises an anchor cable body, a resin anchoring agent, an anchor cable tray and an anchor cable lock; the anchor cable body comprises an anchoring section anchor cable and a free section anchor cable; the anchor cable body is formed by fixedly connecting a plurality of sections of steel strands, and the anchor section anchor cables are bonded and fixed in surrounding rock at the bottom of the anchor hole through a resin anchoring agent; the free section anchor cable is formed by connecting a plurality of sections of steel strands through a sleeve; the free section anchor cable is also connected with the anchoring section anchor cable through a sleeve; the outer end head of the free section anchor cable is arranged outside the anchor hole and locked by installing an anchor cable tray and an anchor cable lock.
Furthermore, two ends of the sleeve are horizontally inserted and contacted through the two anchor cables respectively, the two anchor cables are abutted and locked on the surfaces of the two anchor cables through bolts which are vertically screwed in from the outside to the inside of the sleeve, or the sleeve is respectively arranged outside the connecting end of each anchor cable and is connected with the two sleeves through a sleeve connecting bolt, and the tapered gaskets are arranged between the anchor cables in the sleeves to prevent the anchor cables from falling off.
Furthermore, the inner diameter of the sleeve pipe is consistent with the outer diameter of the anchor cable, the gaskets are gradually reduced from one side of the sleeve pipe connecting end to the outer diameter, and the inner surface of the sleeve pipe is matched with the gaskets to form an arc shape.
Furthermore, external threads are arranged outside the sleeve connecting bolt and are in threaded connection with internal threads arranged in the connecting end of the two sleeves; the outer end of the gasket is connected to the inner wall of the sleeve in a propping mode, and the inner end of the gasket is in contact with the anchor cable through the anti-skidding threads.
Furthermore, the diameter of the anchor cable at the free section is the same as that of the anchor cable at the anchoring section.
Compared with the prior art, the utility model discloses following beneficial effect has: the segmental recyclable high-strength prestressed anchor cable is adopted to support the tunnel face, so that great prestress can be applied, sufficient support resistance can be rapidly and effectively provided at the early stage of tunnel face deformation after tunnel excavation, and the method is very favorable for preventing the tunnel face from entering a relaxation state. After the single-cycle excavation of the tunnel is finished, the anchor cable at the free section extending out of the tunnel face does not interfere with normal construction due to the flexibility of the anchor cable. The disassembled free section anchor cable, the sleeve, the anchor cable tray and the anchor cable lock can be reassembled into a new subsection recyclable high-strength prestressed anchor cable which is used for supporting the face again, the cost of anchor cable supporting can be reduced to a great extent, and the economic benefit is improved.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic view of the support of the embodiment of the present invention connected to a casing by a casing connection bolt;
FIG. 2 is an enlarged partial view of the connection of the bushing coupler pin to the bushing of FIG. 1;
fig. 3 is a schematic view of the support of the embodiment of the present invention in which the sleeve and the anchor cable are connected by bolts;
fig. 4 is a schematic view of a connection structure of the bolt and the hollow cylindrical steel pipe in fig. 3.
In the figure: 1-a resin anchoring agent; 2-anchor cable trays; 3-anchor cable locks; 4-anchoring section anchor cables; 5-free section anchor cable; 6-a sleeve; 7-a gasket; 8-sleeve connection bolt; 9-anchor hole; 10-surrounding rock; 11-hollow cylindrical steel tube; 12-bolt.
Detailed Description
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 to 4, the segmented recyclable high-strength prestressed anchor cable comprises an anchor cable body, a resin anchoring agent 1, an anchor cable tray 2 and an anchor cable lock 3; the anchor cable body comprises an anchor section anchor cable 4 and a free section anchor cable 5; the anchor cable body is formed by fixedly connecting a plurality of sections of steel strands, and the anchor section anchor cables are bonded and fixed in surrounding rock at the bottom of the anchor hole through a resin anchoring agent; the free section anchor cable is formed by connecting a plurality of sections of steel strands through a sleeve 6; the free section anchor cable is also connected with the anchoring section anchor cable through a sleeve; the outer end of the free section anchor cable is located outside the anchor hole 9 and locked by installing an anchor cable tray and an anchor cable lock, the anchor cable lock is generally connected with a screw rod and is in threaded connection with a nut, and the nut is screwed to enable a gasket to abut against the surface of the surrounding rock 10 to generate supporting resistance, which is not described in detail herein for a general manner.
In the embodiment of the utility model provides an in, the sleeve pipe both ends are respectively through two anchor ropes level insert and contact, through from the sleeve pipe outside inwards perpendicular screw insert the bolt 12 top connect in two anchor rope surface locks, or install the sleeve pipe respectively outside the link of every anchor rope to through bushing bolt 8 with two bushing, all prevent that the anchor rope from deviating from through gasket 7 of installation taper between anchor rope that is located the sleeve pipe and the sleeve pipe.
The embodiment of the utility model provides an in, through the bolt with anchor rope and bushing's single sleeve pipe for hollow cylinder steel pipe 11, its internal diameter conforms with the anchor rope external diameter.
The embodiment of the utility model provides an in, sheathed tube internal diameter all conforms with the anchor rope external diameter, the gasket is from bushing end one side external diameter outside reduces gradually, and the intraductal surface fit gasket of sleeve is the arcuation, through anti-skidding screw thread and toper design, can guarantee also can tightly the joint at locking in-process anchor rope intraductal at the cover, is difficult for deviating from, guarantees its intensity.
In the embodiment of the utility model, the external threads are arranged outside the sleeve connecting bolt and are in threaded connection with the internal threads arranged in the two sleeve connecting ends; the outer end of the gasket is connected to the inner wall of the sleeve in a propping mode, and the inner end of the gasket is in contact with the anchor cable through the anti-skidding threads.
In the embodiment of the present invention, the diameter of the free section anchor cable is the same as the anchor section anchor cable.
The utility model discloses theory of operation step: s1: determining the length of each section of steel strand of the anchor cable at the free section according to the single excavation amount of the tunnel, and determining the length of the steel strand of the anchor cable at the anchoring section according to the anchoring force requirement; s2, connecting the steel strands into free section anchor cables through the sleeves, and connecting the free section anchor cables and the anchor section anchor cables into anchor cable bodies through the sleeves; s3, determining the drilling position on the tunnel face to be supported according to the preset design, drilling and cleaning holes by using a drilling machine; s4, filling the resin anchoring agent into the anchor hole, pushing the resin anchoring agent into the hole bottom by using the anchor cable body, connecting the anchor cable at the free section with a drilling machine, continuously rotating and stirring the resin anchoring agent while the anchor cable is pushed forwards, and removing the drilling machine after the stirring and condensation degree meets the requirements; s5, installing anchor cable trays and anchor cable locks on the outer ends of free-section anchor cables, and applying initial pre-tightening force by using an anchor cable tensioning machine, S6, installing anchor cables at other positions on the tunnel face until the segmented recyclable high-strength pre-stressed anchor cables on the whole tunnel face are completely laid, S7, removing all the anchor cable trays and the anchor cable locks before excavating the next circular tunnel face after primary support is applied to tunnel surrounding rock, and then mechanically excavating or blasting excavating; s8: after the excavated rock mass is removed, detaching the free section anchor cable and the sleeve extending out of the tunnel face, recovering the detached free section anchor cable and the sleeve, and mounting an anchor cable tray and an anchor cable lock on the outer end heads of the rest free section anchor cables again; and S9, repeating the steps S7 and S8 until all the anchor cables on the tunnel face are dismantled, and using the recovered free section anchor cables, the sleeve, the anchor cable tray and the anchor cable lock to assemble a new segmented recyclable high-strength prestress anchor cable to realize recycling, reduce the anchor cable supporting cost to a great extent and improve the economic benefit.
The present invention is not limited to the above-mentioned best mode, and any person can obtain the segmented recoverable high-strength prestressed anchor cable of other various forms under the teaching of the present invention. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.
Claims (5)
1. Segmentation recoverable high-strength prestressed anchorage cable, its characterized in that: the anchor cable comprises an anchor cable body, a resin anchoring agent, an anchor cable tray and an anchor cable lock; the anchor cable body comprises an anchoring section anchor cable and a free section anchor cable; the anchor cable body is formed by fixedly connecting a plurality of sections of steel strands, and the anchor section anchor cables are bonded and fixed in surrounding rock at the bottom of the anchor hole through a resin anchoring agent; the free section anchor cable is formed by connecting a plurality of sections of steel strands through a sleeve; the free section anchor cable is also connected with the anchoring section anchor cable through a sleeve; the outer end head of the free section anchor cable is arranged outside the anchor hole and locked by installing an anchor cable tray and an anchor cable lock.
2. The segmented recoverable high-strength prestressed anchor cable according to claim 1, wherein: the two ends of the sleeve are horizontally inserted and contacted through the two anchor cables respectively, the two anchor cables are connected with the surfaces of the two anchor cables through bolts which are vertically screwed in from the outside to the inside of the sleeve in a propping mode and are locked, or the sleeve is arranged outside the connecting end of each anchor cable respectively and is connected with the two sleeves through sleeve connecting bolts, and tapered gaskets are arranged between the anchor cables in the sleeves and the sleeves to prevent the anchor cables from falling off.
3. The segmented recoverable high-strength prestressed anchor cable according to claim 2, wherein: the inner diameter of the sleeve pipe is consistent with the outer diameter of the anchor cable, the gaskets are gradually reduced from one side of the sleeve pipe connecting end to the outer diameter, and the inner surface of the sleeve pipe is matched with the gaskets to form an arc shape.
4. The segmented recoverable high-strength prestressed anchor cable according to claim 2, wherein: external threads are arranged outside the sleeve connecting bolt and are in threaded connection with internal threads arranged in the connecting end of the two sleeves; the outer end of the gasket is connected to the inner wall of the sleeve in a propping mode, and the inner end of the gasket is in contact with the anchor cable through the anti-skidding threads.
5. The segmented recoverable high-strength prestressed anchor cable according to claim 1, wherein: the diameter of the anchor cable at the free section is the same as that of the anchor cable at the anchoring section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021761536.2U CN212428897U (en) | 2020-08-21 | 2020-08-21 | Segmented recyclable high-strength prestressed anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021761536.2U CN212428897U (en) | 2020-08-21 | 2020-08-21 | Segmented recyclable high-strength prestressed anchor cable |
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| CN212428897U true CN212428897U (en) | 2021-01-29 |
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| CN202021761536.2U Active CN212428897U (en) | 2020-08-21 | 2020-08-21 | Segmented recyclable high-strength prestressed anchor cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469353A (en) * | 2019-08-14 | 2019-11-19 | 四川大学 | Mechanical prestressed anchor and its installation and recovery method can be recycled in one kind |
| CN111852528A (en) * | 2020-08-21 | 2020-10-30 | 福州大学 | Segmented recyclable high-strength prestressed anchor cable and construction method thereof |
-
2020
- 2020-08-21 CN CN202021761536.2U patent/CN212428897U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469353A (en) * | 2019-08-14 | 2019-11-19 | 四川大学 | Mechanical prestressed anchor and its installation and recovery method can be recycled in one kind |
| CN110469353B (en) * | 2019-08-14 | 2024-05-28 | 四川大学 | Recyclable mechanical prestress anchor rod and mounting and recycling method thereof |
| CN111852528A (en) * | 2020-08-21 | 2020-10-30 | 福州大学 | Segmented recyclable high-strength prestressed anchor cable and construction method thereof |
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