CN207332918U - A kind of anchor rod anchored structure for loose soft rock supporting - Google Patents
A kind of anchor rod anchored structure for loose soft rock supporting Download PDFInfo
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- CN207332918U CN207332918U CN201720830107.8U CN201720830107U CN207332918U CN 207332918 U CN207332918 U CN 207332918U CN 201720830107 U CN201720830107 U CN 201720830107U CN 207332918 U CN207332918 U CN 207332918U
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- anchor rod
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Abstract
The utility model discloses a kind of anchor rod anchored structure for loose soft rock supporting, for the loose easy unsticking of soft rock environment lower bolt, the problem of anchor force is insufficient, constructed a bit of pipe-seam type anchor rod using first foot of hole, then left-handed nothing is indulged into the method that muscle twisted steel anchor rod is installed in the pipe-seam type anchor rod for being marked with resin anchoring agent.Reinforcement effect by pipe-seam type anchor rod to loose soft rock around foot of hole, and the pulling force of free segment is normally reached to the ability of Rock And Soil depths, this way can significantly improve the supporting effect of loose soft rock environment lower bolt.
Description
Technical field
A kind of anchor rod anchored structure for loose soft rock supporting is the utility model is related to, suitable under loose soft rock environment
Easy unsticking is anchored, anchorage length is excessive and does not utilize the situation of construction, belongs to Roadway Support Technology field.
Background technology
Mine bolt support technology is the emphasis direction of the development of roadway support in recent years, and promote one of supporting is new
It is the advantages that technology, it is with its superior support principle, simple technique, economic cost and good supporting effect, rapid
Be developed and apply.But also expose many problems in the construction process, particularly soft rock supporting, geology crush,
The bolt support technology of structural belt, is the technical barrier of the emphasis to be studied of suspension roof support.Since the country rock in tunnel is loose, broken
It is broken, its globality poor is result in, it is effective that anchor pole is difficult to supporting in this case.Complicated, changeable, the coal seam of condition of coal seam occurrence
The Non-selectivity of mining conditions, makes the production of most mines and construction all suffer from the different degrees of, soft-rock tunnel of varying number
Maintenance problems.Particularly the longer preparatory working of the length of service, development work construction, maintenance are, it is necessary to solve a series of Soft Rock Roadways
Road problem, for example, tunnel is reached a conclusion after weighing a matter that the time is short, deformation is big, difficult maintenance, repair rate height etc..So the suspension roof support of loose soft rock occurs
Difficult supporting, it is vulnerable the problem of it is urgently to be resolved hurrily.
The content of the invention
Goal of the invention：The utility model, which is directed in loose soft-rock tunnel, to be revolved without vertical muscle twisted steel anchor rod anchor force deficiency, easily
Failure, although and pipe-seam type anchor rod can provide larger anchor force in loose soft rock, its tensile strength well below
Left-handed nothing indulges the problem of muscle twisted steel anchor rod, the advantages of indulging muscle twisted steel anchor rod with reference to pipe-seam type anchor rod and left-handed nothing, it is proposed that
A kind of pipe-seam type anchor rod indulges the anchor structure that muscle twisted steel anchor rod is applied in combination with left-handed nothing.
Technical solution：
A kind of anchor rod anchored structure for loose soft rock supporting, the anchor rod anchored structure indulge muscle screw-thread steel including left-handed nothing
Anchor pole and left-handed nothing is indulged into the resin anchoring agent that the armature boring wall of muscle twisted steel anchor rod and loose soft rock binds, armature boring
The diameter of muscle twisted steel anchor rod is indulged with resin anchoring agent, left-handed nothing to match each other, with impact type anchor pole rifle in loose soft rock
One section of pipe-seam type anchor rod of construction is forced in armature boring, left-handed nothing is indulged into muscle twisted steel anchor rod and pipe seam formula anchor with resin anchoring agent
The inner wall bonding of bar.
Further, the length of one section of pipe-seam type anchor rod is 300mm~600mm, while is also to indulge muscle with left-handed nothing
The length that the front end of twisted steel anchor rod is binded with resin anchoring agent.
Further, the diameter of the pipe-seam type anchor rod should be bigger 2~3mm than the diameter of drilling, the diameter of the drilling
For 0.9~0.95 times of the diameter of pipe-seam type anchor rod, the diameter of pipe-seam type anchor rod than left-handed nothing indulge muscle twisted steel anchor rod it is big by 4~
6mm, it is big 2~4mm that the diameter of resin anchoring agent than left-handed nothing indulges muscle twisted steel anchor rod.
The pipe seam formula anchor that it is first 300~600mm in foot of hole one segment length of construction that the method that the utility model is taken, which is,
Bar, then left-handed nothing is indulged into muscle twisted steel anchor rod and is installed in the pipe-seam type anchor rod for being marked with resin anchoring agent, resin anchor powder stick it is straight
Internal diameter after footpath should be installed with pipe-seam type anchor rod matches.Radial pressure and resistance are applied to hole wall in pipe-seam type anchor rod length range
The part that the frictional force that only country rock glides, wherein pipe-seam type anchor rod indulge the contact of the muscle twisted steel anchor rod body of rod with left-handed nothing is to combine anchor
The anchoring section of the body of rod, soil body depths is reached by the pulling force of free segment；It is free segment without vertical muscle twisted steel anchor rod body of rod remainder,
Prestressing force is applied to anchor pole.
Beneficial effect：The beneficial effects of the utility model are：Powerful anchor force and a left side can be provided by combining pipe-seam type anchor rod
Rotation without vertical muscle anchor pole tensile strength it is big the advantages of, being effectively improved loose soft-rock tunnel, to indulge muscle twisted steel anchor rod easily de- due to left-handed nothing
Viscous situation.
Brief description of the drawings
Figure -1 is the floor map of the utility model；
Figure -2 is enlarged drawing at the root part A of the utility model；
Figure -3 is the I-I cross-sectional views of the utility model.
In figure：1- pipe-seam type anchor rods；2- resin anchor powder sticks；The left-handed nothings of 3- indulge muscle twisted steel anchor rod；The loose soft rocks of 4-；5- is held in the palm
Disk；6- nuts
Embodiment
This example combines Figure of description, and a kind of anchor rod anchored structure for loose soft rock supporting is real as follows
Apply:
The utility model discloses a kind of anchor rod anchored structure for loose soft rock supporting, casts anchor for loose soft rock environment
The problem of easy unsticking of bar, anchor force is insufficient, indulged using a bit of pipe-seam type anchor rod of first foot of hole construction, then by left-handed nothing
Muscle twisted steel anchor rod is installed to the method in the pipe-seam type anchor rod for being marked with resin anchoring agent.By pipe-seam type anchor rod to foot of hole
Around loose soft rock reinforcement effect, and the pulling force of free segment is normally reached to the ability of Rock And Soil depths, this way can be shown
The supporting effect of the loose soft rock environment lower bolt of improvement of work.
A kind of specification requirement of anchor rod anchored structure for loose soft rock supporting of the utility model：
(1) requirement of armature boring
Bore diameter should be smaller 2~3mm than the outside diameter of pipe-seam type anchor rod 1, and the diameter that muscle anchor pole 3 is indulged than left-handed nothing is big.Bore
The length that hole length should indulge muscle twisted steel anchor rod 3 than left-handed nothing is small 10~20mm, and as left-handed nothing is indulged muscle twisted steel anchor rod 3 and pacified
Exposed segment length after dress；0.9~0.95 times of the diameter of a diameter of pipe-seam type anchor rod 1 of drilling.
(2) specification requirement of pipe-seam type anchor rod
The length of one section of pipe-seam type anchor rod 1 is 300mm~600mm, while is also to indulge muscle twisted steel anchor rod 3 with left-handed nothing
The length that front end is binded with resin anchoring agent 2.The diameter of pipe-seam type anchor rod 1 should be bigger 2~3mm than the diameter of drilling, drilling
0.9~0.95 times of the diameter of a diameter of pipe-seam type anchor rod 1, the diameter of pipe-seam type anchor rod 1 indulge muscle twisted steel anchor rod 3 than left-handed nothing
Big 4~6mm.
(3) dosage of resin explosive roll
The internal diameter of pipe-seam type anchor rod 1 in drilling of having constructed indulges muscle screw-thread steel anchor with length with existing left-handed nothing
The diameter Relationship of bar 3 determines that dosage, diameter and the length of resin explosive roll 2 need to be used.The diameter of resin anchoring agent 2 is indulged than left-handed nothing
3 big 2~4mm of muscle twisted steel anchor rod, the dosage of resin explosive roll are indulged for pipe-seam type anchor rod and left-handed nothing between muscle twisted steel anchor rod
The volume in gap, i.e. resin anchoring agent dosage=π/4 × l × (D1 2-D2 2)。
Wherein, the length of l --- pipe-seam type anchor rod, mm；D1--- the internal diameter after pipe-seam type anchor rod construction, mm；
D2--- left-handed nothing indulges the diameter of muscle twisted steel anchor rod, mm.
It is as follows that its method of work includes step：
(1) construction armature boring
With monomer jumbolter by design hole position construction drill.
(2) construction pipe-seam type anchor rod
One section of pipe-seam type anchor rod 1 of selection is forced to construct in drilling with impact type anchor pole rifle.Pipe-seam type anchor rod total length
In the range of radial pressure and axial friction are applied to hole wall, larger anchor force can be provided in loose soft rock.
(3) resin explosive roll is sent
Muscle twisted steel anchor rod 3 is indulged with left-handed nothing to be slowly pushed into the resin anchoring agent 2 of selection to 1 bottom of pipe-seam type anchor rod.
As shown in Figure 2,3.
(4) agitating resin
Drilling machine and anchor pole pin (plug) nut 6 are connected with stirring connector, drilling machine is then risen and promotes anchor pole 3,
Slowly rise drilling machine and shut down after being kept stirring 20~30 seconds.
(5) anchor pole is fastened
It is again started up drilling machine after 50 seconds to promote in rotation, anchor nut 6 is cut positioning pin or pushed away under the drive of drilling machine
Go out jam, pallet 5 compresses rapidly top plate scar, as shown in Figure 1, making anchor pole 3 have larger pretightning force.Pneumatic wrench is secondary in time
Add torsion, so that moment of torsion reaches setting.
This anchor structure make use of pipe-seam type anchor rod 1 by directly being contacted with drilling in loose soft rock, in length range
Radial pressure and axial friction are applied to hole wall, good anchoring effect can be reached, due to pipe-seam type anchor rod 1 and left-handed nothing
Vertical muscle twisted steel anchor rod 3 bonded with resin anchoring agent 2 it is more firm, so as to enhance the anchor force under loose soft rocks.Pipe seam
Formula anchor pole 1 and left-handed nothing indulge the drawing that left-handed nothing is indulged 3 free segment of muscle twisted steel anchor rod by the anchor structure that muscle twisted steel anchor rod 3 is formed
Power reaches soil body depths；It is free segment without vertical 3 body of rod remainder of muscle twisted steel anchor rod, prestressing force is applied to anchor pole.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (3)
1. a kind of anchor rod anchored structure for loose soft rock supporting, which indulges muscle screw-thread steel anchor including left-handed nothing
Bar (3) and left-handed nothing is indulged into the resin anchoring agent that the armature boring wall of muscle twisted steel anchor rod (3) and loose soft rock (4) binds
(2), the diameter of armature boring indulges mutual total of diameter of both muscle twisted steel anchor rods (3) with resin anchoring agent (2), left-handed nothing
Match somebody with somebody, it is characterised in that：One section of pipe-seam type anchor rod (1) is equipped with the armature boring of loose soft rock (4), left-handed nothing indulges muscle screw-thread steel
Anchor pole (3) is arranged in the pipe-seam type anchor rod (1), between pipe-seam type anchor rod (1) and left-handed nothing indulge muscle twisted steel anchor rod (3)
Resin anchoring agent (2) is equipped with, the resin anchoring agent (2) is used to left-handed nothing indulging muscle twisted steel anchor rod (3) and pipe seam formula anchor
The inner wall bonding of bar (1).
2. anchor rod anchored structure according to claim 1, it is characterised in that：The length of one section of pipe-seam type anchor rod (1)
For 300mm~600mm, while it is also to indulge the length that the front end of muscle twisted steel anchor rod (3) is binded with resin anchoring agent (2) with left-handed nothing
Degree.
3. anchor rod anchored structure according to claim 1, it is characterised in that：The diameter of the pipe-seam type anchor rod (1) is than boring
Big 2~the 3mm of diameter in hole, 0.9~0.95 times of the diameter of a diameter of pipe-seam type anchor rod (1) of the drilling, pipe-seam type anchor rod
(1) diameter indulges that muscle twisted steel anchor rod (3) is big 4~6mm than left-handed nothing, and the diameter of resin anchoring agent (2) indulges muscle spiral shell than left-handed nothing
Line steel anchor rod (3) big 2~4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830107.8U CN207332918U (en) | 2017-07-10 | 2017-07-10 | A kind of anchor rod anchored structure for loose soft rock supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830107.8U CN207332918U (en) | 2017-07-10 | 2017-07-10 | A kind of anchor rod anchored structure for loose soft rock supporting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207332918U true CN207332918U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720830107.8U Active CN207332918U (en) | 2017-07-10 | 2017-07-10 | A kind of anchor rod anchored structure for loose soft rock supporting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086999A (en) * | 2021-12-03 | 2022-02-25 | 武钢资源集团金山店矿业有限公司 | Anchoring method of tube seam anchor rod |
-
2017
- 2017-07-10 CN CN201720830107.8U patent/CN207332918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086999A (en) * | 2021-12-03 | 2022-02-25 | 武钢资源集团金山店矿业有限公司 | Anchoring method of tube seam anchor rod |
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