CN215566027U - Novel anchor rod full-length anchoring device - Google Patents
Novel anchor rod full-length anchoring device Download PDFInfo
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- CN215566027U CN215566027U CN202120589729.2U CN202120589729U CN215566027U CN 215566027 U CN215566027 U CN 215566027U CN 202120589729 U CN202120589729 U CN 202120589729U CN 215566027 U CN215566027 U CN 215566027U
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Abstract
The utility model discloses a novel anchor rod full-length anchoring and grouting device which mainly comprises a grouting sleeve, an anchor rod body, a grout stopping plug, a sealing washer, a movable grouting head, a tray, a fastening nut and a grouting hole. The structure is characterized in that: the movable grouting head is arranged at the end of the grouting sleeve; the grouting hole is an inherent hole on the side surface of the grouting sleeve and is positioned at the tail end of the grouting sleeve; the grout stopping plug is sleeved on the grouting sleeve, is positioned at the lower part of the end head of the grouting sleeve and is tightly attached to the tray; the sealing washer is positioned in the groove at the end part of the grouting sleeve and is tightly connected with the fastening nut and the anchor rod body. Compared with the prior art, its beneficial effect has: the end anchoring and the full-length anchoring of the anchor rod and the anchor cable can be simultaneously carried out, the integration of anchoring and grouting is realized, and the end anchoring is changed into the full-length anchoring; by double sealing of the grout stop plug and the sealing washer, the surrounding rock is effectively sealed, and high-pressure grouting is realized; the combined grouting of deep and shallow holes can be realized for the common anchor rod and anchor cable, and the application range of the common anchor rod and anchor cable is widened.
Description
Technical Field
The utility model relates to the technical field of coal mine underground roadway anchor rod support grouting, in particular to a novel anchor rod full-length anchor grouting device and a using method thereof.
Background
With the increase of the coal mining depth, the pressure of the surrounding rock of the roadway is increased, and particularly in a weak rock stratum, a fault fracture zone and a roadway influenced by mining, the joint fracture of the surrounding rock develops, so that the strength and the stability of the surrounding rock are reduced, and great difficulty is brought to the control of the surrounding rock of the roadway, the support of the roadway and the maintenance of the roadway. The anchor rods and the anchor cables are used as support forms commonly used in coal mines at present, and have the advantages of being rapid in installation, timely in bearing and the like, and meanwhile, the anchor rods and the anchor cables have many problems. The full-length anchoring and grouting technology gradually developed in recent years is widely applied to the fields of mines and underground engineering, has a remarkable engineering effect, and particularly plays a great role in supporting broken surrounding rocks.
Currently, the mine roadway realizes the anchor-grouting support mainly by respectively adopting anchor rods or anchor cables, and the grouting anchor rods or grouting anchor cables are adopted for grouting, and the actual anchor-grouting support can be realized only by respectively constructing the anchor rods or the grouting anchor cables. Most grouting anchor rods are hollow, the bearing capacity is low, the supporting requirement of deep mining high-stress large-deformation roadways is difficult to meet, and the grouting anchor rods only can play a role of grouting pipes; because the grouting anchor rod needs to be drilled and installed again, a large amount of manpower and material resources are wasted, the cost is increased, and the efficiency is reduced; due to poor sealing, slurry leakage is easy to cause; the grouting pipe of the grouting anchor cable is arranged in the anchor cable, the grouting pipe is thin, the flow is limited, and the hole plugging phenomenon is easy to occur, so the technical requirement is high; the common anchor rod and anchor cable anchoring agent only has the function of anchoring the end part, the anchor rod is not contacted with surrounding rocks, and the shearing resistance of the anchor rod can be exerted only after the rock stratum is greatly dislocated, so that the stress of the anchor rod body is not sensitive to the deformation and separation of the surrounding rocks, the supporting rigidity is low, and the overall stability is reduced; a larger gap is formed between the anchor rod and the surrounding rock, and the anchor rod is exposed in the air for a long time, so that the anchor rod body is easy to rust, and the strength of the anchor rod body is reduced;
how to organically combine anchoring support and grouting reinforcement technology is a difficult problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel anchor rod full-length anchoring device which mainly comprises a grouting sleeve, an anchor rod body, a grout stopping plug, a sealing washer, a movable grouting head, a tray, a fastening nut and a grouting hole. The structure is characterized in that: the movable grouting head is arranged at the end of the grouting sleeve; the grouting hole is an inherent hole on the side surface of the grouting sleeve and is positioned at the tail end of the grouting sleeve; the grout stopping plug is sleeved on the grouting sleeve, is positioned at the lower part of the end head of the grouting sleeve and is tightly attached to the tray; the sealing washer is positioned in the groove at the end part of the grouting sleeve and is tightly connected with the fastening nut and the anchor rod body. Compared with the prior art, its beneficial effect has: the end anchoring and the full-length anchoring of the anchor rod and the anchor cable can be simultaneously carried out, the integration of anchoring and grouting is realized, and the end anchoring is changed into the full-length anchoring; by double sealing of the grout stop plug and the sealing washer, the surrounding rock is effectively sealed, and high-pressure grouting is realized; the combined grouting of deep and shallow holes can be realized for the common anchor rod and anchor cable, and the application range of the common anchor rod and anchor cable is widened.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the utility model provides a novel stock full length anchor is annotated device mainly includes slip casting sleeve 1, the stock body 2, only starch stopper 3, seal ring 4, movable slip casting head 5, tray 6, fastening nut 7, slip casting hole 1-1.
In the novel anchor rod full-length anchoring and grouting device, the movable grouting head 5 is arranged at the end head of the grouting sleeve 1, so that the aim of free rotation according to the field condition can be fulfilled;
in the novel anchor rod full-length anchoring and grouting device, the grouting hole 1-1 is an inherent device on the side surface of the grouting sleeve 1 and is positioned at the tail end of the grouting sleeve 1, and when grouting is started, slurry flows out through the grouting hole 1-1 and the tail end of the grouting sleeve 1 to fill a drill hole and a surrounding rock crack;
in the novel anchor rod full-length anchor grouting device, the grout stop plug 3 is sleeved on the grouting sleeve 1 and is positioned at the lower position of the end of the grouting sleeve 1 and tightly attached to the tray 6, and the grout stop plug 3 has the function of preventing grout from overflowing from a drill hole during grouting and causing grout leakage;
novel stock full length anchor notes device, seal ring 4 is located the recess of 1 tip of slip casting sleeve, closely links to each other with fastening nut 7 and the stock body 2, seal ring 4 can be with the recess coupling of 1 end of slip casting sleeve, prevent that slip casting in-process slurry from overflowing from the sleeve, the thick liquid phenomenon of leaking appears.
The novel anchor rod full-length anchoring and grouting device comprises the following use method:
firstly, according to design requirements, parameters of anchor rod drilling position, drilling depth, drilling diameter, anchoring agent cartridge type and length, grouting sleeve 1 length and the like of a section are determined, and after temporary support is completed, drilling is carried out by using an anchor rod drilling machine.
Cleaning coal scraps and rock scraps in the drill hole, and putting the anchoring agent into the drill hole.
The anchor rod sleeved with the novel anchor rod full-length anchoring device is inserted into a drilled hole, proper end anchoring is carried out according to a normal anchoring mode, a sealing gasket 4 is installed in a groove at the contact position of the end part of the grouting sleeve 1 and the anchor rod body 2, a nut 7 is screwed up, the pre-tightening force is increased, and the anchor rod body 2 is fixedly connected in a rock body.
And connecting a grouting opening 1-1 at the end part of the grouting sleeve 1 with a grouting pipe, starting grouting, and carrying out full-length anchoring. And finishing grouting until the slurry is filled in the whole drill hole and the surrounding rock cracks.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model can realize the function of shallow hole and deep hole grouting for the common anchor rod and anchor cable, and broadens the application range of the common anchor rod and anchor cable.
2. The utility model realizes the full-length anchoring of the rod body on the basis of not influencing the anchoring of the end part of the common anchor rod, namely, the full-length grouting anchoring is carried out under the condition of not changing the anchoring strength of the end part, so that the integral bearing capacity is improved, and the supporting requirement of deep mining high-stress large-deformation roadway is met
3. The utility model does not need to drill a hole again to install the grouting anchor rod when the grouting full-length anchoring is carried out, thereby saving a large amount of manpower and material resources, reducing the cost and improving the efficiency
4. According to the utility model, through double sealing of the grout stop plug 3 and the sealing washer 4, the surrounding rock can be effectively sealed, grout leakage is prevented, and high-pressure grouting is realized.
5. According to the utility model, through the through hole at the tail part of the grouting sleeve 1 and the grouting hole 1-1 positioned on the side surface of the tail part, the axial flow and the radial flow of slurry can be realized, the flow is increased, and the hole plugging phenomenon is not easy to cause.
6. The utility model can carry out full-length grouting anchoring on the common anchor rod and anchor cable, so that the rod body, slurry and surrounding rock cracks are integrated, the anchor rod body is uniformly stressed, and the anchor rod is sensitive to surrounding rock deformation and separation.
7. The utility model carries out full-length grouting on the common anchor rod and anchor cable to ensure that the rod body of the anchor rod and anchor cable is fixedly solidified in the slurry, thereby realizing the isolation from air and moisture, preventing the rod body from rusting and improving the service life and the strength of the rod body.
8. The utility model realizes the stress full-length anchoring of the anchor rod and the anchor cable, and fully plays the active supporting role of the anchor rod and the anchor cable.
Drawings
The utility model discloses a novel anchor rod full-length anchoring and grouting device, which has the structural schematic diagram that:
FIG. 1 is a general schematic view of a novel anchor rod full-length anchoring device
FIG. 2 is a schematic view of the structure of each fitting of a novel anchor rod full-length anchoring device
The grouting device comprises a grouting sleeve 1, an anchor rod body 2, a grout stop plug 3, a sealing washer 4, a movable grouting head 5, a tray 6, a fastening nut 7 and grouting holes 1-1.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1 and 2, the movable grouting head 5 is mounted at the end of the grouting sleeve 1 and can freely rotate according to field conditions; the grouting hole 1-1 is an inherent device positioned on the side surface of the grouting sleeve 1 and is positioned at the tail end of the grouting sleeve 1; the grout stop plug 3 is sleeved on the grouting sleeve 1, is positioned at the lower position of the end of the grouting sleeve 1 and is tightly attached to the tray 6; the sealing washer 4 is positioned in a groove at the end part of the grouting sleeve 1 and is tightly connected with the fastening nut 7 and the anchor rod body 2, and the sealing washer 4 can be coupled with the groove at the end of the grouting sleeve 1.
According to design requirements, parameters of anchor rod drilling position, drilling depth, drilling diameter, anchoring agent cartridge type and length, grouting pipe length and the like of the cross section are determined, and after temporary support is completed, the anchor rod drilling machine is used for drilling.
Cleaning coal scraps and rock scraps in the anchor rod hole, and putting the anchoring agent into the drill hole.
And inserting the anchor rod sleeved with the novel anchor rod full-length anchoring device into the drilled hole 2, and anchoring the end part of the anchor rod in a proper amount according to a normal anchoring mode.
And connecting the grouting pipe and starting grouting. The slurry flows along the sleeve under pressure, flows out from the grouting holes 1-1 on the side surface of the grouting sleeve 1 and the bottom, and flows along the drill hole. When the slurry is filled in the gap between the bottom end of the grouting sleeve 1 and the hole bottom, the slurry starts to flow back, namely, the slurry flows to the hole openings along the inner side and the outer side of the grouting sleeve 1, and when the slurry on the outer side reaches the hole openings, the slurry is prevented from overflowing from the hole openings on the outer side of the grouting sleeve 1 due to the action of the slurry stop plugs 3. When the inner side slurry reaches the upper port of the grouting sleeve 1, the fastening nut 7 exerts a pre-tightening force on the sealing washer 4, so that the sealing washer 4 is coupled with the groove at the end part of the grouting sleeve 1, and the slurry is prevented from overflowing from the inner side of the grouting sleeve 1.
And (5) continuing grouting until the slurry is full of the whole drill hole and the surrounding rock cracks, and finishing grouting.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and any variations and modifications of the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims (3)
1. The utility model provides a novel stock full length anchor is annotated device, mainly includes slip casting sleeve (1), the stock body (2), ends thick liquid stopper (3), seal ring (4), movable slip casting head (5), tray (6), fastening nut (7), slip casting hole (1-1), its characterized in that: the movable grouting head (5) is arranged at the end of the grouting sleeve (1) and can freely rotate according to the field conditions; the grouting holes (1-1) are inherent devices on the outer side of the grouting sleeve (1) and are positioned at the tail end of the grouting sleeve (1), and when grouting is started, slurry flows out through the grouting holes (1-1) to fill drill holes and surrounding rock cracks; the grout stopping plug (3) is sleeved on the grouting sleeve (1), is positioned at the lower position of the end of the grouting sleeve (1), and is tightly attached to the tray (6), and the grout stopping plug (3) is used for preventing grout from overflowing from a drill hole during grouting and leaking; sealing washer (4) are located the recess of slip casting sleeve (1) tip, closely link to each other with fastening nut (7) and stock body (2), and sealing washer (4) can be with the recess coupling at slip casting sleeve (1) end, prevent that slip casting in-process slurry from overflowing in the sleeve, appear leaking the thick liquid phenomenon.
2. The novel anchor rod full-length anchoring and grouting device according to claim 1, characterized in that: the movable grouting head (5) is connected with the end part of the grouting sleeve (1) through threads.
3. The novel anchor rod full-length anchoring and grouting device according to claim 1, characterized in that: the grouting holes (1-1) are inherent holes dug at the outer side of the tail of the grouting sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120589729.2U CN215566027U (en) | 2021-03-16 | 2021-03-16 | Novel anchor rod full-length anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120589729.2U CN215566027U (en) | 2021-03-16 | 2021-03-16 | Novel anchor rod full-length anchoring device |
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| Publication Number | Publication Date |
|---|---|
| CN215566027U true CN215566027U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120589729.2U Active CN215566027U (en) | 2021-03-16 | 2021-03-16 | Novel anchor rod full-length anchoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024088045A1 (en) * | 2022-10-29 | 2024-05-02 | 华能澜沧江水电股份有限公司 | Active control method and device for large deformation of deep thin-layered surrounding rock |
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2021
- 2021-03-16 CN CN202120589729.2U patent/CN215566027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024088045A1 (en) * | 2022-10-29 | 2024-05-02 | 华能澜沧江水电股份有限公司 | Active control method and device for large deformation of deep thin-layered surrounding rock |
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