CN209324391U - A kind of bolt grouting bracing means - Google Patents
A kind of bolt grouting bracing means Download PDFInfo
- Publication number
- CN209324391U CN209324391U CN201822085019.7U CN201822085019U CN209324391U CN 209324391 U CN209324391 U CN 209324391U CN 201822085019 U CN201822085019 U CN 201822085019U CN 209324391 U CN209324391 U CN 209324391U
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- section
- slip casting
- slurry
- grouting
- anchor rod
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Abstract
The utility model discloses a kind of bolt grouting bracing means, it is sleeved on outside the anchor rod body in insertion anchoring drilling, it mainly include slip casting steel pipe, slip casting copper pipe, the slip casting steel pipe includes pulp section, positioned at pulp section top into slurry section, the pulp section is located at the upper semisection in anchoring drilling, and its outer diameter linearly reduces along vertical downward direction, several slurry outlets are offered along pulp section is vertical, and sliding sleeve is connected to the stop grouting plug above slurry outlet, the aperture edge that anchoring drilling is overlapped in into slurry section, the junction at top and anchor rod body into slurry section is provided with seal washer, the free end of the slip casting copper pipe is provided with grouting port, discharge end is connected into the side of slurry section.The utility model realizes anchor and infuses integrated supporting by simplifying grouting with plunger, effective hoisting grouting efficiency and anchor force, improving the supporting effect of anchor pole in setting slip casting steel pipe.
Description
Technical field
The utility model relates to technical field of building construction, more particularly to a kind of bolt grouting bracing means.
Background technique
Currently, grouted anchor bar uses hollow design, body of rod mesoporous is as drilling high-pressure blast aquaporin and slip casting channel, with reality
Core bar is compared, and hollow design can get better rigidity and shearing strength.Anchor pole external surface overall length standard steep-pitch thread knot
Structure, cutting and spreading of the helicitic texture convenient for anchor pole, increases the bond area of anchor bar body and injecting paste material compared with smooth shaft
To improve anchor force.
But using the anchor pole of hollow design, there is also some shortcomings: firstly, the hair body of rod inside need process it is longer
Inner hole, processing cost is higher, and anchor pole is also required to drill on rock mass when in use, cannot using drilling directly be infused
Slurry, grouting with plunger are complicated；Secondly, anchor pole in a pre-installation, is needed in rock mass internal drilling, will then be infused again in anchor pole insertion drilling
Slurry, if boring aperture is smaller, the area that grouting amount is limited, slip casting is contacted with palisades surface is smaller, and it is hypodynamic to there is anchoring
Risk is not easy centering in anchor pole insertion drilling, is easy to appear that slip casting around anchor pole is unbalanced, does not fill if boring aperture is larger
Increase the workload of bolt grouting position adjustment the problem of dividing；Again, since anchor pole diameter itself size is little, to guarantee
Its intensity, internal mesopore pore size is just smaller, is in the milk by the channel of the small-bore, grouting efficiency is lower.
Therefore it is urgent to provide a kind of bolt grouting bracing means to solve the above problems.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of bolt grouting bracing means, improve suspension roof support effect
Fruit simplifies grouting with plunger, realizes a Kong Duoyong, anchor note integration.
In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of bolt grouting and add
It is fixedly mounted with and sets, be sleeved on outside the anchor rod body in insertion anchoring drilling, mainly include slip casting steel pipe, slip casting copper pipe；
The slip casting steel pipe include pulp section, positioned at pulp section top into slurry section；
The pulp section is located at the upper semisection in anchoring drilling, and its outer diameter linearly reduces along vertical downward direction,
Several slurry outlets are offered along pulp section is vertical, and sliding sleeve is connected to the stop grouting plug above slurry outlet；
The junction at the aperture edge that anchoring drilling is overlapped in into slurry section, top and anchor rod body into slurry section is arranged
There is seal washer；
The free end of the slip casting copper pipe is provided with grouting port, and discharge end is connected into the side of slurry section.
Further, the outer diameter into slurry section is greater than the outer diameter of pulp section.
Further, pre-pressing structure is arranged in the top into slurry section, and the pre-pressing structure is set in the top of anchor rod body
Portion.
Further, the pre-pressing structure includes positioned at the anchor rod pallet board anchored on the outside of drilling, is threadedly connected to anchor pole bar
The pre-load nut of external side；
The top surface of the anchor rod pallet board is provided with anti-attrition washer, sets between the top surface of anti-attrition washer and the bottom surface of pre-load nut
It is equipped with spherical washer.
Further, the anchor rod pallet board is the bowl-shape metal shell construction that back-off is placed, and end face center offers confession
The through-hole that anchor rod body passes through.
Further, it is provided with protective case on the outside of the middle section of the slip casting copper pipe, protective case is located at the bottom of pre-pressing structure.
Further, it is fixed with retaining ring on the inner wall into slurry section, the retaining ring is located at the bottom of seal washer, slip casting
The top of copper pipe discharge end.
Further, non-return valve is provided in the grouting port, the external activity fastening of grouting port has sealing nut.
Further, exhaust pipe is interspersed in the stop grouting plug, the bottom end of exhaust pipe stretches to the bottom of anchoring drilling, and
Several exhaust outlets have been arranged in vertical on the side wall of exhaust pipe.
The beneficial effects of the utility model are as follows:
1. the utility model by being arranged slip casting steel pipe on the outside of solid anchor rod body, can anchored by slip casting steel pipe
Slip casting is directly carried out in drilling, is realized a Kong Duoyong, is simplified grouting with plunger, reduce anchoring cost；
2. the hole that the utility model by being arranged slip casting steel pipe on the outside of solid anchor rod body, can increase anchoring drilling
Diameter, so that the contact area of grouting amount and slip casting and palisades surface is improved, to effectively promote anchor force；Meanwhile passing through slip casting
Steel pipe can realize quick and precisely positioning of the anchor rod body in the anchoring drilling of large aperture, simple to operate；
3. the utility model is on the outside of solid anchor rod body by being arranged slip casting steel pipe, and with slip casting steel pipe and anchor pole bar
For cavity between body as slip casting channel, channel cross-section is larger, can significant increase slip casting efficiency；
4. the utility model applies certain pretightning force to anchor pole by setting pre-pressing structure, make pretightning force anchoring and note
Slurry, which is reinforced, to be organically combined, and the supporting effect of anchor pole is improved, and is realized anchor and is infused integrated supporting.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic perspective view of the slip casting steel pipe；
In figure: 1 anchor rod body, 2 slip casting steel pipes, 21 pulp sections, 211 slurry outlets, 22 into slurry section, 23 retaining rings, 3 slip casting copper
Pipe, 31 sealing nuts, 32 non-return valves, 33 grouting ports, 4 anchoring bodys, 5 pre-pressing structures, 51 anchor rod pallet boards, 52 pre-load nuts, 53 subtract
Grind washer, 54 spherical washers, 6 anchoring drillings, 7 seal washers, 8 stop grouting plugs, 9 protective cases, 10 exhaust pipes.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Please refer to Fig. 1 and Fig. 2, a kind of bolt grouting bracing means, the anchor rod body 6 being sleeved in insertion anchoring drilling 6
Play the role of reinforcing 1 anchoring effect of anchor rod body, mainly include slip casting steel pipe for the grouting with plunger of anchor rod body 1 in outside
2, slip casting copper pipe.Wherein, anchor rod body 1, slip casting steel pipe 2 and slip casting copper pipe 3 are independently processed, and are applied in combination, are simplified life
Process is produced, production cost is reduced.
Preferably, the length of slip casting steel pipe 2 can be determined according to the length of anchor rod body 1.Due in the outer of bolt body 1
Portion is additionally arranged slip casting steel pipe 2, the aperture of anchoring drilling 6 can be suitably increased in a pre-installation, to improve grouting amount and slip casting and rock
The contact area of wall surface, effectively promotion anchor force.Meanwhile anchor rod body 1 can be realized in the anchor of large aperture by slip casting steel pipe 2
Admittedly the quick and precisely positioning in drilling 6, simple to operate.
For slip casting steel pipe 2 including pulp section 21, positioned at 21 top of pulp section into slurry section 22, the outer diameter into slurry section 22 is big
In the outer diameter of pulp section 21.Slip casting is directly carried out in anchoring drilling 6 by slip casting steel pipe 2, so that anchoring drilling 6 can
Location and installation is enough carried out to anchor rod body 1 by slip casting steel pipe 2, and directly can carry out slip casting in the external of anchor rod body 1, in fact
An existing Kong Duoyong, simplifies grouting with plunger, reduces anchoring cost.
Into depending on the outer diameter foundation flow rate of grouting demand of slurry section 22, guarantee between 21 inner wall of pulp section and anchor rod body 1
Gap between cavity space, 21 outer wall of pulp section and anchoring 6 inner walls of drilling reaches the in a basic balance of slurry feed and discharging.It is excellent
Choosing, the outer diameter of pulp section 21 is the half of the outer diameter of anchor rod body 1 and the internal diameter of anchoring drilling 6 and value.Into the outer of slurry section 22
Diameter size is greater than anchoring 6 internal diameter 10mm to 50mm of drilling, and it is reliably fixed at the aperture of anchoring drilling 6 into slurry section 22 to guarantee
Position.It, can significant increase note by the way that using the cavity between slip casting steel pipe 2 and anchor rod body 1 as slip casting channel, channel cross-section is larger
Starch efficiency.
Pulp section 21 is located at the upper semisection in anchoring drilling 6, and the outer diameter of pulp section 21 is along vertical downward direction line
Property reduce.The side of pulp section 21 opens up that there are two the slurry outlets 211 that are vertically distributed, and sliding sleeve is connected to positioned at slurry outlet
The stop grouting plug 8 of 211 tops, stop grouting plug 8 is for preventing slurries from overflowing anchoring drilling 6.In the present embodiment, pulp section 21 is through bottleneck
After reason, the gradient of whole segment length is in 1 ° to 5 °, convenient in pulp section 21 smoothly insertion anchoring drilling 6；During slip casting, only
Slurry plug 8 is under grouting pressure effect, and stop grouting plug 8 is gradually mobile to the aperture of anchoring drilling 6, between stop grouting plug 8 and pulp section 21
Frictional force be gradually increased, until grouting pressure can not push stop grouting plug 8 mobile, to realize sealing only slurry effect.
The aperture edge of anchoring drilling 6 is overlapped in into slurry section 22, the junction at top and anchor rod body 1 into slurry section 22 is set
It is equipped with seal washer 7, is connected into the side of slurry section 22 with the discharge end of slip casting copper pipe 3.In the present embodiment, seal washer 7 is used
Rubber washer, for preventing slurries from exosmosing along the surface of anchor rod body 1.Retaining ring 23, retaining ring are fixed on into the inner wall of slurry section 22
23 are located at the top of the bottom of seal washer 7,3 discharge end of slip casting copper pipe, for preventing seal washer 7 from blocking slip casting copper pipe 3
Discharge port.
Pre-pressing structure 5 is set into the top of slurry section 22, pre-pressing structure 5 is set in the top of anchor rod body 1.Anchor rod body 1
Bottom outside be coated be filled in anchoring drilling 6 bottoms anchoring body 4.Anchoring body 4 is used for the anchoring of 1 inner end of anchor rod body,
Pre-pressing structure 5 is used for the preload of 1 outer end of anchor rod body, organically combines pretightning force anchoring with grouting and reinforcing, improves the branch of anchor pole
Effect is protected, realizes that anchor infuses integrated supporting.
Pre-pressing structure 5 includes positioned at the anchor rod pallet board 51 anchored on the outside of drilling 6, is threadedly connected to 1 outside of anchor rod body
Pre-load nut 52.In the present embodiment, anchor rod pallet board 51 is the bowl-shape metal shell construction that back-off is placed, and end face center offers
For the through-hole that anchor rod body 1 passes through, anchor rod body 1 is inserted into the through-hole.The top surface of anchor rod pallet board 51 is provided with anti-attrition washer 53,
Spherical washer 54 is provided between the top surface of anti-attrition washer 53 and the bottom surface of pre-load nut 52.
The free end of slip casting copper pipe 3 is provided with grouting port 33, and discharge end is connected into the side of slurry section 22.Preferably, it infuses
It starches and is provided with protective case 9 on the outside of the middle section of copper pipe 3, protective case 9 is located at the bottom of pre-pressing structure 5, anchor rod pallet board 51 can be prevented right
Slip casting copper pipe 3, which causes to squeeze, causes slip casting copper pipe 3 to deform, and guarantees going on smoothly for slip casting.It can also be in anchor rod pallet board 51
Side offers perforation, and slip casting copper pipe 3 passes through perforation, can be not provided with protective case 9, and effectively avoid anchor rod pallet board 51 to slip casting copper
The adverse effect of pipe 3.
Non-return valve 32 is provided in grouting port 33, the external activity fastening of grouting port 33 has sealing nut 31.Non-return valve 32
With sealing nut 31 for blocking grouting port 33, prevent slurries from adverse current occurring in slip casting copper pipe 3.In the present embodiment, gasket
Circle 7, stop grouting plug 8, non-return valve 32 are intended to meet use condition, have enough anti-pressure abilities and good sealing effect.It is preferred that
, the discharge end of slip casting copper pipe 3 is tightly connected by coupling nut with the side wall into slurry section 22, convenient for before slip casting installation and note
Disassembly after the completion of slurry anchoring, the copper pipe after disassembly recycle after can be recycled or being appropriately processed.
If country rock locating for anchoring drilling 6 is more complete, crack agensis, to prevent slurries that cannot be sufficiently injected anchoring drilling
6 bottom, then intert an exhaust pipe 10 in stop grouting plug 8, and thinner plastic tube or common steel tube can be used in exhaust pipe 10.Row
The bottom end of tracheae 10 stretches to the bottom of anchoring drilling 6, positioned at the top of anchoring body 4, and along vertical on the side wall of exhaust pipe 10
Direction is provided with several exhaust outlets.In the continuous injection process of slurries, underlying gas vent can be blocked, the row of top
Stomata still keeps good exhaust performance, and air is effectively prevent to be entrained into slurries, occur slip casting it is insufficient and influence anchoring
The problem of power.If rock crusher, cranny development, stop grouting plug 8 can be not provided with exhaust pipe 10.
When the utility model is used, first beating armature boring 6, it is then packed into Anchor Agent in drilling, anchor rod body 1 is inserted
Enter in armature boring 6, and Anchor Agent is stirred by anchor rod body 1, loads onto seal washer 7 and stop grouting plug 8 in slip casting steel pipe 2, make
The position of stop grouting plug 8 is located at the top of slurry outlet 211, then by 2 sets of slip casting steel pipe on anchor rod body 1, and by slip casting steel pipe 2
It is inserted into armature boring 6, completes positioning of the anchor rod body 1 in armature boring 6.After Anchor Agent solidification, in anchor rod body 1
Inner end forms anchoring body 4, completes the preliminary anchoring of anchor rod body 1.
By the slip casting copper pipe 3 for being cased with protective case 9 be connected into slurry section 22 side on, then successively install anchor rod pallet board 51,
Anti-attrition washer 53, spherical washer 54 and pre-load nut 52 make the protective case 9 on slip casting copper pipe 3 be located at 51 bottom sides of anchor rod pallet board
The torque of pre-load nut 52 to design is then tightened in the lower section of edge, applies bolt pretension, completes the prefastened of anchor rod body 1
It is fixed.
The sealing nut 31 on slip casting copper pipe 3 is opened, using slip casting machine by the superfine cement of high grade slurry or chemical grout
It is filled in grouting port, slurries are entered in slip casting copper pipe 3 by non-return valve 32, then the discharge port through slip casting copper pipe 3 enters slip casting steel
In pipe 2, the slurries in slip casting steel pipe 2 enter anchor rod body 1 and anchoring drilling 6 by the bottom end of slip casting steel pipe 2 or slurry outlet 211
Between gap and wall-rock crack in.Slurries constantly wrap up anchor rod body 1 along its length, prevent the corrosion of anchor rod body 1
Fracture.Stop grouting plug 8 constantly rises under the action of grouting pressure, since the outer diameter on 21 top of pulp section constantly increases, only
Frictional force between slurry plug 8 and pulp section 21 also constantly increases, when frictional force is increased sufficiently to overcome caused by grouting pressure
When thrust, stop grouting plug 8 is no longer moved up.When grouting pressure reaches designated value, and after a period of stabilisation, stops slip casting, tighten close
Nut 31 is sealed, non-return valve 32 and the cooperation of sealing nut 31 block grouting port, prevent slurries from outflowing, remove slip casting machine.It is complete to slurries
After full solidification, then the complete anchoring of anchor rod body 1 is completed.
In the construction process, when mounting and pre-tightening structure 5, can also only pre-load nut 52 tentatively be tightened, pre-load nut 52 to
Lower extruding seal washer 7 can prevent slurries not along 1 running pulp of anchor rod body, to slip casting after, tightening pre-load nut
52 to design torque.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (9)
1. a kind of bolt grouting bracing means, the anchor rod body (1) being sleeved in insertion anchoring drilling (6) is external, and feature exists
In: it mainly include slip casting steel pipe (2), slip casting copper pipe (3)；
The slip casting steel pipe (2) include pulp section (21), be located at pulp section (21) top into slurry section (22)；
The pulp section (21) is located at the upper semisection in anchoring drilling (6), and its outer diameter linearly subtracts along vertical downward direction
It is small, several slurry outlets (211) are offered along pulp section (21) is vertical, and sliding sleeve is connected to above slurry outlet (211)
Stop grouting plug (8)；
The aperture edge that anchoring drilling (6) is overlapped in into slurry section (22), into top and anchor rod body (1) of slurry section (22)
Junction is provided with seal washer (7)；
The free end of the slip casting copper pipe (3) is provided with grouting port (33), and discharge end is connected into the side of slurry section (22).
2. bolt grouting bracing means according to claim 1, it is characterised in that: the outer diameter into slurry section (22)
Greater than the outer diameter of pulp section (21).
3. bolt grouting bracing means according to claim 1, it is characterised in that: the top into slurry section (22) is arranged
Pre-pressing structure (5), the pre-pressing structure (5) are set in the top of anchor rod body (1).
4. bolt grouting bracing means according to claim 3, it is characterised in that: the pre-pressing structure (5) includes being located at
Anchor the anchor rod pallet board (51) on the outside of drilling (6), the pre-load nut (52) being threadedly connected on the outside of anchor rod body (1)；
The top surface of the anchor rod pallet board (51) is provided with anti-attrition washer (53), the top surface and pre-load nut (52) of anti-attrition washer (53)
Bottom surface between be provided with spherical washer (54).
5. bolt grouting bracing means according to claim 4, it is characterised in that: the anchor rod pallet board (51) is that back-off is put
The bowl-shape metal shell construction set, end face center offer the through-hole passed through for anchor rod body (1).
6. bolt grouting bracing means according to claim 4, it is characterised in that: outside the middle section of the slip casting copper pipe (3)
Side is provided with protective case (9), and protective case (9) is located at the bottom of pre-pressing structure (5).
7. bolt grouting bracing means according to claim 1, it is characterised in that: solid on the inner wall into slurry section (22)
Surely have retaining ring (23), the retaining ring (23) is located at the top of the bottom of seal washer (7), slip casting copper pipe (3) discharge end.
8. bolt grouting bracing means according to claim 1, it is characterised in that: be provided in the grouting port (33) inverse
The external activity fastening of only valve (32), grouting port has sealing nut (31).
9. bolt grouting bracing means according to claim 1, it is characterised in that: the row of being interspersed in the stop grouting plug (8)
Tracheae (10), the bottom end of exhaust pipe (10) stretch to the bottom of anchoring drilling (6), and along Vertical Square on the side wall of exhaust pipe (10)
To being provided with several exhaust outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822085019.7U CN209324391U (en) | 2018-12-12 | 2018-12-12 | A kind of bolt grouting bracing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822085019.7U CN209324391U (en) | 2018-12-12 | 2018-12-12 | A kind of bolt grouting bracing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209324391U true CN209324391U (en) | 2019-08-30 |
Family
ID=67726332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822085019.7U Expired - Fee Related CN209324391U (en) | 2018-12-12 | 2018-12-12 | A kind of bolt grouting bracing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209324391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389201A (en) * | 2021-06-30 | 2021-09-14 | 大连理工大学 | Grouting method of efficient anchor rod pressure grouting system |
| CN114215531A (en) * | 2021-12-02 | 2022-03-22 | 中煤科工开采研究院有限公司 | Coal mine tunnel ultra-soft surrounding rock modification method and structure |
-
2018
- 2018-12-12 CN CN201822085019.7U patent/CN209324391U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389201A (en) * | 2021-06-30 | 2021-09-14 | 大连理工大学 | Grouting method of efficient anchor rod pressure grouting system |
| CN114215531A (en) * | 2021-12-02 | 2022-03-22 | 中煤科工开采研究院有限公司 | Coal mine tunnel ultra-soft surrounding rock modification method and structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20201212 |