CN207212381U - A kind of anchor pole for deep tunnel soft-rock slope - Google Patents
A kind of anchor pole for deep tunnel soft-rock slope Download PDFInfo
- Publication number
- CN207212381U CN207212381U CN201721243318.8U CN201721243318U CN207212381U CN 207212381 U CN207212381 U CN 207212381U CN 201721243318 U CN201721243318 U CN 201721243318U CN 207212381 U CN207212381 U CN 207212381U
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- Prior art keywords
- anchor
- anchor pole
- pole
- hollow
- barrier plate
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Abstract
The utility model provides a kind of anchor pole for deep tunnel soft-rock slope, including the first anchor pole, hollow anchor bar, anchor cable and the second anchor pole；The rear end of the first described anchor pole is connected by hollow anchor bar with the front end of the second anchor pole, is provided with anchor cable in hollow anchor bar, the both ends of anchor cable are connected with the rear end of the first anchor pole and the front end of the second anchor pole respectively；One barrier plate is installed, barrier plate is placed in the rear end of the first anchor pole on the first described anchor pole；A barrier plate is set with second anchor pole, barrier plate is placed at the front end of the second anchor pole.The utility model has simple in construction, and easy to operate, cost is low；When the utility model anchors, first anchor pole is anchored using anchoring cartridge, second anchor pole is bonded by the way of slip casting, extending deformation of member space is fully reserved at hollow anchor bar, the bearing capacity of energy auto-control surrouding rock stress redistribution, hollow bolt deformation during surrouding rock deformation, anchor cable can bear huge drag, realize the preventing and treating to roadway deformation.
Description
Technical field
A kind of soft modeling country rock anchor of preventing and treating deep tunnel is the utility model is related to, is used for deep more particularly, to one kind
The anchor pole of tunnel soft-rock slope.
Background technology
At present, as mining engineering is gradually carried out to deep, the supporting of research deep laneway surrounding rock related problem and project
Research work more need consider deform influence.Existing deep laneway surrounding rock supporting is common bolt supporting, is applicable and becomes
Shape is not very big, and it is the large deformation in the case of soft rock to ignore country rock, thus is had some limitations.
The supporting of deep laneway surrounding rock common bolt has good supporting effect for hard rock at present, but for deep soft rock
Supporting effect be not it is obvious that a large amount of field data shows：The variant of deep laneway surrounding rock has two kinds, and one kind is to enclose
Rock be hard rock situation, it is a kind of be country rock be soft rock situation, former instance be country rock deformation to external expansion that is
Tunnel hole footpath becomes larger over time, and the situation of the latter is the inwardly extended that is tunnel over time of the deformation of country rock
Hole footpath tapers into.The anchorage style of anchor pole now mainly has two kinds, i.e. end anchorage and full length fastening.Extendable anchor rod presses work
Principle is summarized as that the body of rod is extending and structural detail slides extending two major class, to realize the elongation generally use termination anchor of anchor pole
Solid method, and i.e. anchor head and bottom hole rock mass consolidation anchor pole tail pallet pretension, deform continuous different from weak surrounding rock and keep
Country rock relative fullness, increase over time deformation and become larger, deflection can not reach for the anchor pole of traditional supporting
The deflection of soft rock causes anchor pole to break, so that surrounding rock failure, induces roof fall and the appearance of lateral wall in tunnel.
The Extendable anchor rod of resistance large deformation, such as Application No. are proposed in terms of soft rock large deformation is tackled
201110430379.6 Chinese patent discloses a kind of reserved anchoring process for preventing and treating rock burst, although the body of rod is provided with a part
Extending section, but can only be applicable in hard crisp rock mass.Application No. 201020602613.X Chinese patent discloses a kind of ductility
Anchor pole, there is provided waveform segment and stiffness spring, but the anchor pole resistance to deformation effect of waveform segment and unobvious.Application No.
201020684957.X Chinese patent discloses a kind of water expansion type elastic anchor rod for resisting rock burst, and deflection length is effectively to anchor
9 percent or so of length, but anchor pole bearing capacity is low, but it is not suitable for the operating mode of stress higher.Application No.
201010552103.0 Chinese patent discloses a kind of hard rock that is directed to and deforms and can be supplied to the reserved anchoring of extending ability
Method, this method realize reserved anchoring, but such as misoperation, anchor pole using quick bond with cohesive two kinds of resin anchoring agents at a slow speed
Extending component is easily caused during drilling to be bonded, anchor pole by compressive strain less effective.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of simple in construction so that the extending component of anchor pole
Do not bonded, overcome a kind of anchor for deep tunnel soft-rock slope of the good preventing and treating deformation of the effect of anchor pole local deformation
Bar.
The technical solution adopted in the utility model is：A kind of anchor pole for deep tunnel soft-rock slope, including the first anchor
Bar, hollow anchor bar, anchor cable and the second anchor pole；The rear end of the first described anchor pole is connected by the front end of hollow anchor bar and the second anchor pole
Connect, be provided with anchor cable in hollow anchor bar, the both ends of anchor cable are connected with the rear end of the first anchor pole and the front end of the second anchor pole respectively；It is described
The first anchor pole on a barrier plate is installed, barrier plate is placed in the rear end of the first anchor pole；One is set with second anchor pole
Barrier plate, barrier plate are placed at the front end of the second anchor pole.
In the above-mentioned anchor pole for deep tunnel soft-rock slope, described hollow anchor bar is made of screw-thread steel, and first
The distance between barrier plate on barrier plate and the second anchor pole on anchor pole is 1.09 times of hollow anchor bar length.
In the above-mentioned anchor pole for deep tunnel soft-rock slope, rear end is provided with nut, pallet and stopped on the second anchor pole
Slurry plug, pallet is between nut and stop grouting plug.
In the above-mentioned anchor pole for deep tunnel soft-rock slope, the both ends of described hollow anchor bar respectively with the first anchor pole
Rear end and the second anchor pole front end welding；The both ends of described anchor cable respectively by the rear end of mechanical anchorage and the first anchor pole and
The front end connection of second anchor pole.
Compared with prior art, the beneficial effects of the utility model are：
1）The utility model has simple in construction, easy to operate, the advantages of cost is low.
2）When the utility model anchors, the first anchor pole is anchored using anchoring cartridge, and the second anchor pole is glued by the way of slip casting
Knot, is not anchored at hollow anchor bar, fully reserves extending deformation of member space, and energy auto-control surrouding rock stress redistribution is held
Loading capability, when surrouding rock deformation occurs, hollow anchor bar yield deformation is even broken, and the anchor cable in hollow anchor bar can bear huge
Drag, realize the preventing and treating to roadway deformation.
3）Do not anchored at hollow anchor bar of the present utility model, be respectively equipped with barrier plate close to the both ends of hollow anchor bar, stop
Plate can prevent that mortar and anchoring cartridge enter in reserved section during slip casting, and extending component is bonded existing when avoiding anchor rod anchored
The generation of elephant, make compressive strain effect good.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
As shown in figure 1, the anchor pole of the present utility model for deep tunnel soft-rock slope, including the first anchor pole 9, hollow anchor
Bar 7, the anchor pole 13 of anchor cable 8 and second；The both ends of described hollow anchor bar 7 respectively with the second anchor pole of rear end 13 of the first anchor pole 9
Weld front end.Anchor cable 8 is provided with hollow anchor bar 7, the both ends of anchor cable 8 pass through the rear end of the mechanical anchor pole 9 of anchorage 10 and first respectively
Connected with the front end of the second anchor pole 13.A barrier plate 11 is installed on the first described anchor pole 9, barrier plate 11 is placed in the first anchor
The rear end of bar 9.One barrier plate 12 is installed, barrier plate 12 is placed at the front end of the second anchor pole 13 on second anchor pole 12.The
Rear end is provided with nut 1, pallet 2 and stop grouting plug 5 on two anchor poles 13, and pallet 2 is between nut 1 and stop grouting plug 3.
Described hollow anchor bar 7 is made of the screw-thread steel of high intensity, and the expansion and contraction of the screw-thread steel of high intensity is about certainly
9 the percent of body length, in order to ensure extending deformation of member space, the anchor pole 13 of barrier plate 11 and second on the first anchor pole 9
On the distance between barrier plate 12 be 1.09 times of the length of hollow anchor bar 7.
The anchoring process of anchor pole of the present utility model for deep tunnel soft-rock slope comprises the following steps：
1）Anchor rod anchored position is determined in deep tunnel, bores bolthole；
2）Bolthole shaping after, according to the bar footpath in the aperture of bolthole and the first anchor pole 9 determine anchoring cartridge 4 diameter and
Length, anchoring cartridge 4 is filled in toward bolthole bottom hole, be inserted into the anchor pole for deep tunnel soft-rock slope, and cause first
Anchor pole 9 and the bond-anchorage of anchoring cartridge 4；
3）To the gap slip casting between the second anchor pole 13 and bolthole, after the completion of slip casting, install and stop at bolthole aperture
Slurry plug 5, after mortar 3 solidifies, pallet 2 and nut 1 are installed, to being anchored for the anchor pole of deep tunnel soft-rock slope.
Anchoring process of the present utility model, Anchor Agent anchorage style and slip casting anchorage style are combined, ensure that anchor pole can
Elongate member has the suitable headspace not anchored, and can install pallet 2 and form certain prestressing force.Anchor of the present utility model
Solid method, extending deformation of member space is fully reserved, has adapted to complete soft modeling surrouding rock deformation feature under the condition of high ground stress of deep,
The bearing capacity of energy auto-control surrouding rock stress redistribution, when surrouding rock deformation occurs, hollow bolt moment yield deformation is even disconnected
Split, but anchor cable can bear huge drag, realize the preventing and treating to roadway deformation.
Claims (4)
1. a kind of anchor pole for deep tunnel soft-rock slope, it is characterized in that：Including the first anchor pole, hollow anchor bar, anchor cable and
Two anchor poles；The rear end of the first described anchor pole is connected by hollow anchor bar with the front end of the second anchor pole, and anchor is provided with hollow anchor bar
Rope, the both ends of anchor cable are connected with the rear end of the first anchor pole and the front end of the second anchor pole respectively；It is provided with the first described anchor pole
One barrier plate, barrier plate are placed in the rear end of the first anchor pole；A barrier plate is set with second anchor pole, barrier plate is placed in
At the front end of two anchor poles.
2. the anchor pole according to claim 1 for deep tunnel soft-rock slope, it is characterized in that：Described hollow anchor bar is adopted
It is made of screw-thread steel, the distance between barrier plate on barrier plate and the second anchor pole on the first anchor pole is hollow anchor bar length
1.09 again.
3. the anchor pole according to claim 1 for deep tunnel soft-rock slope, it is characterized in that：Rear end on second anchor pole
Provided with nut, pallet and stop grouting plug, pallet is between nut and stop grouting plug.
4. the anchor pole according to claim 1 for deep tunnel soft-rock slope, it is characterized in that：Described hollow anchor bar
Welded respectively with the rear end of the first anchor pole and the front end of the second anchor pole at both ends；The both ends of described anchor cable pass through mechanical anchorage respectively
It is connected with the rear end of the first anchor pole and the front end of the second anchor pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243318.8U CN207212381U (en) | 2017-09-26 | 2017-09-26 | A kind of anchor pole for deep tunnel soft-rock slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243318.8U CN207212381U (en) | 2017-09-26 | 2017-09-26 | A kind of anchor pole for deep tunnel soft-rock slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212381U true CN207212381U (en) | 2018-04-10 |
Family
ID=61819249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721243318.8U Expired - Fee Related CN207212381U (en) | 2017-09-26 | 2017-09-26 | A kind of anchor pole for deep tunnel soft-rock slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207212381U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489437A (en) * | 2017-09-26 | 2017-12-19 | 湖南科技大学 | A kind of anchor pole and anchoring process for deep tunnel soft-rock slope |
| CN112360533A (en) * | 2020-12-29 | 2021-02-12 | 石家庄铁道大学 | Anchoring structure for tunnel interbedded rock mass |
-
2017
- 2017-09-26 CN CN201721243318.8U patent/CN207212381U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489437A (en) * | 2017-09-26 | 2017-12-19 | 湖南科技大学 | A kind of anchor pole and anchoring process for deep tunnel soft-rock slope |
| CN112360533A (en) * | 2020-12-29 | 2021-02-12 | 石家庄铁道大学 | Anchoring structure for tunnel interbedded rock mass |
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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: 20180410 Termination date: 20200926 |