CN207686735U - Baseboard of coal mine roadway deformed bar suspension device - Google Patents
Baseboard of coal mine roadway deformed bar suspension device Download PDFInfo
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- CN207686735U CN207686735U CN201721697088.2U CN201721697088U CN207686735U CN 207686735 U CN207686735 U CN 207686735U CN 201721697088 U CN201721697088 U CN 201721697088U CN 207686735 U CN207686735 U CN 207686735U
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- deformed bar
- grouting
- hole
- anchorage
- bar
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Abstract
Baseboard of coal mine roadway deformed bar suspension device, including deformed bar, lower anchorage, pallet, steel channel beam and upper anchorage, reinforced steel bar perforation and injected hole are offered on steel channel beam, lower anchorage is arranged in the lower end of deformed bar and positioned at the bottom hole vertically to drill, pallet is sleeved on deformed bar and is contacted with steel channel beam upper surface, the bottom injection cement mortar vertically to drill will form grouting anchoring section after the pre-buried solidification of lower anchorage, upper anchorage is sleeved on the upper end of deformed bar and coordinates with pallet top pressure；The grouting and reinforcing section and sealing of hole sections solidified after injection cement mortar is provided on grouting anchoring section in vertical drilling.The utility model simple structure is easy to construction, is safe and reliable, both high-strength active support of the deformed bar to broken rock had been realized, actively strengthen roadway floor bearing capacity further through grouting and reinforcing, superficial part rock stratum is anchored at deep to stablize in rock stratum, is truly realized " high intensity, high pre-stress, big depth " active immediate support.
Description
Technical field
The utility model belongs to colliery tunnel support technical field, and in particular to a kind of baseboard of coal mine roadway deformed bar
Suspension device.
Background technology
With the gradually exploitation of coal resources, coal mining depth increasingly increases, adopts rotating ring border increasingly complexity, deep rock mass
Show soft rock characteristic, drift section rises to big cross section or extra-large cross-section, cause Floor Heave in Roadway problem to be on the rise.For coal
Mine roadway floor Deformation control, currently used support technology means mainly have：Closed supports supporting, the arch supporting of anti-bottom, anchor pole
Supporting, cable bolting and grouting and reinforcing etc. although alleviating roadway floor deformation using conventional technical means, but still exist
Problems with：In design of its support thinking, however it remains the problem of " weight top plate and two help, light bottom plate "；It is controlled in bottom deformation
Technically, then there are problems that bottom plate " supporting intensity is small, prestressing force is insufficient, supporting depth is inadequate ", cause plate destructing depth
It is lasting to increase so that bottom plate is in the vicious circle of " often overhauling, frequent pucking ", and Floor Heave in Roadway problem cannot be effective
Radical cure.
Utility model content
The utility model in order to solve shortcoming in the prior art, provide it is a kind of it is simple in structure, supporting intensity is high, branch
Shield depth is big, can effectively control the baseboard of coal mine roadway deformed bar suspension device of roadway floor pucking phenomenon generation.
In order to solve the above technical problems, the utility model adopts the following technical solution：Baseboard of coal mine roadway deformed bar
Suspension device, including deformed bar, lower anchorage, pallet, steel channel beam and upper anchorage, steel channel beam are horizontally set in roadway floor
The aperture that vertically drills above, the length of steel channel beam is more than the aperture vertically to drill, offered on steel channel beam reinforced steel bar perforation and
Injected hole, deformed bar are extend into across reinforced steel bar perforation in vertical drilling, and lower anchorage is arranged in the lower end of deformed bar
And positioned at the bottom hole vertically to drill, pallet is sleeved on deformed bar and is contacted with steel channel beam upper surface, the bottom vertically to drill
Grouting anchoring section will be formed by injecting cement mortar after the pre-buried solidification of lower anchorage, be applied to deformed bar upper end post-tensioned prestressed
Tightly, upper anchorage is sleeved on the upper end of deformed bar and coordinates with pallet top pressure；It is arranged on grouting anchoring section in vertical drilling
There is the grouting and reinforcing section and sealing of hole sections solidified after injection cement mortar, partition board is provided between grouting and reinforcing section and sealing of hole sections.
Upper anchorage is identical with the construction of lower anchorage and setting symmetrical above and below；
Lower anchorage includes anchor block, and transparent through-hole is offered in anchor block, and through-hole is the cone of lower thick upper thin
Structure, the cutting ferrule there are two half cone-shaped is set in through-hole, and two cutting ferrule centers are equipped with through-hole with the circular socket holes of center line, in advance
Stress reinforcing bar lower end is extend into circular socket holes, has two gaps with the centerline parallel of through-hole between two cutting ferrules,
The inner wall of circular socket holes is equipped with the annular line increased with deformed bar excircle axial friction.
The shape of anchor block is cylinder, and the external screw-thread of anchor block is connected with guiding cap, and the top of guiding cap is cylinder
The lower part of shape structure, guiding cap is the upper thick conical structure of lower point.
Deformed bar external peripheral surface is evenly arranged with several dowels.
The Grouting Pipe for extending into grouting and reinforcing section is provided in injected hole, Grouting Pipe lower end is located under grouting and reinforcing section
Portion, partition board are fixedly connected with Grouting Pipe.
Using above-mentioned technical proposal, the support reinforcement construction operation process of the utility model is：Then the band that will be made
There is the deformed bar of lower anchorage and guiding cap to be pushed down to the bottom hole vertically to drill, deformed bar and vertically drills
Heart line overlaps, and penetrates plastics sebific duct in the injected hole opened up on steel channel beam and extend into the bottom hole vertically to drill, and will stirring
Good cement mortar is in the milk by the way that plastics sebific duct is counter, and plastics sebific duct is up carried in grouting, until it is deep to reach design grouting
Degree, forms grouting anchoring section, and guiding cap and lower anchorage are embedded into grouting anchoring section；Plastics sebific duct is taken out, and passes through slot
The Grouting Pipe of the pre-buried design length of injected hole on girder steel, and, envelope be used for after in Grouting Pipe and fixed using diaphragm housing ring
Hole, is provided with the circular hole being sleeved on deformed bar on partition board, the internal diameter that the outer diameter of partition board slightly smaller than vertically drills, partition board distance
Aperture 500mm vertically to drill or so, then the upper end of deformed bar be upward through the reinforced steel bar perforation of steel channel beam；Anchor to be in the milk
Gu after section solidification, installing anchorage in deformed bar upper end, and deformed bar is stretched to the pre- next upper anchorage of design will
Deformed bar locks.Injection cement mortar carries out sealing of hole in vertical drilling above partition board, and sealing of hole sections are formed after solidification；Envelope
After the completion of hole, roadway floor ground is hardened, forms bottom plate hardened layer, hardening thickness 300mm or so, steel channel beam is answered in advance
Power reinforcing bar upper end, upper anchorage and pallet are embedded in bottom plate hardened layer；After the completion of roadway floor hardened ground, according to roadway floor
Grouting parameter is pumped using wind-driving grouting, by pre-buried Grouting Pipe in the vertical drilling between grouting anchoring section and sealing of hole sections
Cement mortar is injected, reinforcing soleplate breaking surrounding rock forms grouting and reinforcing section after solidification.
The utility model had both been realized pre- using the construction method of " first grouting anchoring, again tensioning preload, grouting behind shaft or drift lining are reinforced "
Stress reinforcing bar actively strengthens roadway floor bearing capacity further through grouting and reinforcing to the high-strength active support of broken rock, will be shallow
Portion rock stratum is anchored at deep and stablizes in rock stratum, is truly realized " high intensity, high pre-stress, big depth " active immediate support, energy
It is enough effectively to solve the problems, such as in existing Control of floor technology " supporting intensity is small, prestressing force is insufficient, supporting depth is inadequate ", to protect
Roadway floor stability under the complicated hard situation of card.
Guiding cap in the utility model is the upper thick conical structure of lower point, is extended down into vertically in deformed bar
During foot of hole, can avoid blocking of the uneven structure of hole wall to lower anchorage, cause to fall and break to bottom hole process more
Smoothly.The upper end annular of lower anchorage and guiding cap is embedded into grouting anchoring section, plays firm anchoring prestress reinforcing bar lower end
Effect.
Dowel is arranged in external in deformed bar, can further enhance and connect between deformed bar and grouting and reinforcing section
The effect of intensity is connect, supporting effect is improved.
Partition board plays the role of support when to sealing of hole sections progress slip casting, while also functioning to and being carried with deformed bar collective effect
The effect of high supporting effect.
The lower end of Grouting Pipe extend into the lower part of grouting and reinforcing section in vertical drilling, is carried out in this way using wind-driving grouting pump
When slip casting, in the crack for the hole wall that can slurries be injected into grouting and reinforcing section from bottom to top, improve grouting and reinforcing section and hole wall it
Between bonding strength.
Upper anchorage is identical and symmetrical above and below with the construction of lower anchorage, the circle that the outer wall of deformed bar and two cutting ferrules are formed
After the annular line of shape jack inner wall generates frictional force, during deformed bar is tensioned, deformed bar pulls two cutting ferrules,
Two cutting ferrules are stopped that the gap between two cutting ferrules can become smaller, prestressing force is got over by the through-hole of anchor block inner conical structure
Frictional force between high-prestressed reinforcing bar and two cutting ferrules is bigger, the more draws the more tight, to play good anchorage effect.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the enlarged drawing of lower anchorage and guiding cap in Fig. 1.
Specific implementation mode
As depicted in figs. 1 and 2, the baseboard of coal mine roadway deformed bar suspension device of the utility model, including prestressing force
Reinforcing bar 1, lower anchorage 2, pallet 3, steel channel beam 4 and upper anchorage 5, steel channel beam 4 are horizontally set on vertically drilling in roadway floor
Above aperture, the length of steel channel beam 4 is more than the aperture vertically to drill, offers reinforced steel bar perforation and injected hole on steel channel beam 4, answers in advance
Power reinforcing bar 1 is extend into across reinforced steel bar perforation in vertical drilling, and lower anchorage 2 is arranged in the lower end of deformed bar 1 and positioned at perpendicular
To the bottom hole of drilling, pallet 3 is sleeved on deformed bar 1 and is contacted with 4 upper surface of steel channel beam, the bottom injection water vertically to drill
Cement mortar will form grouting anchoring section 6 after the 2 pre-buried solidification of lower anchorage, post-tensioned prestressed to the application of 1 upper end of deformed bar tight, on
Anchorage 5 is sleeved on the upper end of deformed bar 1 and coordinates with 3 top pressure of pallet；It is provided on grouting anchoring section 6 in vertical drilling
The grouting and reinforcing section 7 and sealing of hole sections 8 solidified after injection cement mortar, is provided with partition board 9 between grouting and reinforcing section 7 and sealing of hole sections 8.
Upper anchorage 5 is identical with the construction of lower anchorage 2 and setting symmetrical above and below；
Lower anchorage 2 includes anchor block 10, and transparent through-hole is offered in anchor block 10, and through-hole is the circle of lower thick upper thin
Pyramidal structure, the cutting ferrule 11 there are two half cone-shaped is set in through-hole, and two 11 centers of cutting ferrule are equipped with through-hole with the circle of center line
Shape jack 12,1 lower end of deformed bar are extend into circular socket holes 12, between two cutting ferrules 11 have two in through-hole
The parallel gap 16 of heart line, the inner wall of circular socket holes 12 are equipped with the annular increased with 1 excircle axial friction of deformed bar
Line.
The shape of anchor block 10 is cylinder, and the external screw-thread of anchor block 10 is connected with guiding cap 13, guiding cap 13 it is upper
Portion is columnar structured, and the lower part of guiding cap 13 is the upper thick conical structure of lower point.
1 external peripheral surface of deformed bar is evenly arranged with（Welding）Several dowels 14.
The Grouting Pipe 15 for extending into grouting and reinforcing section 7 is provided in injected hole, 15 lower end of Grouting Pipe is located at grouting and reinforcing section 7
Lower part, partition board 9 is fixedly connected with Grouting Pipe 15.
The support reinforcement construction operation process of the utility model is：Then lower anchorage 2 and guiding cap are carried by what is made
13 deformed bar 1 is pushed down to the bottom hole vertically to drill, and deformed bar 1 is overlapped with the center line vertically to drill,
Plastics sebific duct is penetrated in the injected hole opened up on steel channel beam 4 and extend into the bottom hole vertically to drill, and the cement bonded sand that will be stirred
Slurry is in the milk by the way that plastics sebific duct is counter, and plastics sebific duct is up carried in grouting, until reaching design grout penetration, forms grouting
Anchoring section 6, guiding cap 13 and lower anchorage 2 are embedded into grouting anchoring section 6；Plastics sebific duct is taken out, and by steel channel beam 4
The pre-buried design length of injected hole Grouting Pipe 15, and be sleeved in Grouting Pipe 15 using partition board 9 and fixed, the envelope after being used for
Hole, is provided with the circular hole being sleeved on deformed bar 1 on partition board 9, the internal diameter that the outer diameter of partition board 9 slightly smaller than vertically drills, partition board 9
The aperture 500mm or so that distance vertically drills, then the upper end of deformed bar 1 is upward through the reinforced steel bar perforation of steel channel beam 4；It waits for
After the anchoring section 6 that is in the milk solidifies, anchorage 5 is installed in 1 upper end of deformed bar, and deformed bar 1 is stretched to design and is pre-tightened
Upper anchorage 5 locks deformed bar 1 afterwards.Injection cement mortar carries out sealing of hole in vertical drilling above partition board 9, after solidification
Form sealing of hole sections 8；After the completion of sealing of hole, roadway floor ground is hardened, forms bottom plate hardened layer, hardening thickness 300mm is left
The right side, steel channel beam 4,1 upper end of deformed bar, upper anchorage 5 and pallet 3 are embedded in bottom plate hardened layer；Roadway floor hardened ground
After the completion, it according to roadway floor by grouting parameter, is pumped using wind-driving grouting, by pre-buried Grouting Pipe 15 to 6 He of anchoring section of being in the milk
Cement mortar is injected in vertical drilling between sealing of hole sections 8, reinforcing soleplate breaking surrounding rock forms grouting and reinforcing section 7 after solidification.
The utility model had both been realized pre- using the construction method of " first grouting anchoring, again tensioning preload, grouting behind shaft or drift lining are reinforced "
Stress reinforcing bar 1 actively strengthens roadway floor bearing capacity further through grouting and reinforcing to the high-strength active support of broken rock, will be shallow
Portion rock stratum is anchored at deep and stablizes in rock stratum, is truly realized " high intensity, high pre-stress, big depth " active immediate support, energy
It is enough effectively to solve the problems, such as in existing Control of floor technology " supporting intensity is small, prestressing force is insufficient, supporting depth is inadequate ", to protect
Roadway floor stability under the complicated hard situation of card.
Guiding cap 13 in the utility model is the upper thick conical structure of lower point, is extended down into deformed bar 1
During vertical foot of hole, blocking of the uneven structure of hole wall to lower anchorage 2 is can avoid, is caused to fall and break to the process of bottom hole
More smoothly.The upper end annular of lower anchorage 2 and guiding cap 13 is embedded into grouting anchoring section 6, plays firm anchoring prestress steel
The effect of 1 lower end of muscle.
Dowel 14 is arranged in external in deformed bar 1, can further enhance deformed bar 1 and grouting and reinforcing section 7
Bonding strength effect, improve supporting effect.
Partition board 9 play the role of to sealing of hole sections 8 carry out slip casting when support, while also function to and deformed bar 1 jointly make
With the effect for improving supporting effect.
The lower end of Grouting Pipe 15 extend into the lower part of grouting and reinforcing section 7 in vertical drilling, is pumped in this way using wind-driving grouting
When carrying out slip casting, in the crack for the hole wall that can slurries be injected into grouting and reinforcing section 7 from bottom to top, improve grouting and reinforcing section 7 with
Bonding strength between hole wall.
Upper anchorage 5 is identical and symmetrical above and below with the construction of lower anchorage 2, the outer wall of deformed bar 1 and two 11 shapes of cutting ferrule
At 12 inner wall of circular socket holes annular line generate frictional force after, during deformed bar 1 be tensioned, deformed bar 1 drawing
Two cutting ferrules 11 are moved, two cutting ferrules 11 are stopped by the through-hole of anchor block 10 inner conical structure, between two cutting ferrules 11
Gap can become smaller, and the frictional force between the more high-prestressed reinforcing bar 1 of prestressing force and two cutting ferrules 11 is bigger, the more draws the more tight, to rise
To good anchorage effect.
The present embodiment not makes any form of restriction the shape of the utility model, material, structure etc., every foundation
The technical essence of the utility model belongs to this reality to any simple modification, equivalent change and modification made by above example
With the protection domain of new technique scheme.
Claims (5)
1. baseboard of coal mine roadway deformed bar suspension device, it is characterised in that：Including deformed bar, lower anchorage, pallet, slot
Girder steel and upper anchorage, steel channel beam are horizontally set on above the aperture vertically to drill in roadway floor, and the length of steel channel beam is more than
The aperture vertically to drill offers reinforced steel bar perforation and injected hole on steel channel beam, and deformed bar extend into perpendicular across reinforced steel bar perforation
Into drilling, lower anchorage is arranged in the lower end of deformed bar and positioned at the bottom hole vertically to drill, and pallet is sleeved on prestress steel
It is contacted on muscle and with steel channel beam upper surface, the bottom injection cement mortar vertically to drill will be formed after the pre-buried solidification of lower anchorage is in the milk
Anchoring section, deformed bar upper end is applied it is post-tensioned prestressed tight, upper anchorage be sleeved on the upper end of deformed bar and with pallet top
Press-fit；The grouting and reinforcing section solidified after injection cement mortar and sealing of hole are provided on grouting anchoring section in vertical drilling
Section, partition board is provided between grouting and reinforcing section and sealing of hole sections.
2. baseboard of coal mine roadway deformed bar suspension device according to claim 1, it is characterised in that：Upper anchorage is under
The construction of anchorage is identical and setting symmetrical above and below；
Lower anchorage includes anchor block, and transparent through-hole is offered in anchor block, and through-hole is the conical structure of lower thick upper thin,
The cutting ferrule there are two half cone-shaped is set in through-hole, two cutting ferrule centers are equipped with through-hole with the circular socket holes of center line, prestressing force
Reinforcing bar lower end is extend into circular socket holes, has two gaps with the centerline parallel of through-hole between two cutting ferrules, round
The inner wall of jack is equipped with the annular line increased with deformed bar excircle axial friction.
3. baseboard of coal mine roadway deformed bar suspension device according to claim 2, it is characterised in that：Outside anchor block
Shape is cylinder, and the external screw-thread of anchor block is connected with guiding cap, and the top of guiding cap is columnar structured, the lower part of guiding cap
For the upper thick conical structure of lower point.
4. baseboard of coal mine roadway deformed bar suspension device according to claim 1, it is characterised in that：Deformed bar
External peripheral surface is evenly arranged with several dowels.
5. baseboard of coal mine roadway deformed bar suspension device according to claim 1, it is characterised in that：It is set in injected hole
It is equipped with the Grouting Pipe for extending into grouting and reinforcing section, Grouting Pipe lower end is located at the lower part of grouting and reinforcing section, and partition board is fixed with Grouting Pipe
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721697088.2U CN207686735U (en) | 2017-12-08 | 2017-12-08 | Baseboard of coal mine roadway deformed bar suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721697088.2U CN207686735U (en) | 2017-12-08 | 2017-12-08 | Baseboard of coal mine roadway deformed bar suspension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207686735U true CN207686735U (en) | 2018-08-03 |
Family
ID=62996555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721697088.2U Expired - Fee Related CN207686735U (en) | 2017-12-08 | 2017-12-08 | Baseboard of coal mine roadway deformed bar suspension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207686735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505641A (en) * | 2018-12-25 | 2019-03-22 | 山东安科矿山支护技术有限公司 | A kind of soft-rock tunnel bottom plate anchor pouring reinforcement method |
-
2017
- 2017-12-08 CN CN201721697088.2U patent/CN207686735U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505641A (en) * | 2018-12-25 | 2019-03-22 | 山东安科矿山支护技术有限公司 | A kind of soft-rock tunnel bottom plate anchor pouring reinforcement method |
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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 |
Granted publication date: 20180803 Termination date: 20181208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |