CN107489437A - A kind of anchor pole and anchoring process for deep tunnel soft-rock slope - Google Patents
A kind of anchor pole and anchoring process for deep tunnel soft-rock slope Download PDFInfo
- Publication number
- CN107489437A CN107489437A CN201710884181.2A CN201710884181A CN107489437A CN 107489437 A CN107489437 A CN 107489437A CN 201710884181 A CN201710884181 A CN 201710884181A CN 107489437 A CN107489437 A CN 107489437A
- Authority
- CN
- China
- Prior art keywords
- anchor pole
- anchor
- pole
- barrier plate
- hollow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Abstract
The invention provides a kind of anchor pole and anchoring process for deep tunnel soft-rock slope, anchor pole includes 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 present invention have it is simple in construction, easy to operate, cost is low；During present invention anchoring, 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
The present invention relates to the soft modeling country rock anchor of one kind preventing and treating deep tunnel and anchoring process, used more particularly, to one kind
In the anchor pole and anchoring process of deep 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.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of simple in construction so that the extending component of anchor pole not by
Bond, overcome the anchor pole and anchor for deep tunnel soft-rock slope of a kind of good preventing and treating deformation of the effect of anchor pole local deformation
Bar method.
The technical solution adopted by the present invention is：A kind of anchor pole for deep tunnel soft-rock slope, including the first anchor pole, sky
Heart anchor pole, 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, empty
Anchor cable is provided with heart anchor pole, 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；Described
One barrier plate is installed, barrier plate is placed in the rear end of the first anchor pole on one anchor pole；A stop is set with second anchor pole
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.
A kind of anchoring process of the above-mentioned anchor pole for deep tunnel soft-rock slope, comprises the following steps：
1）Anchor rod anchored position is determined in deep tunnel, bores bolthole；
2）After bolthole shaping, the diameter and length of anchoring cartridge are determined according to the bar footpath in the aperture of bolthole and the first anchor pole,
Anchoring cartridge is filled in toward bolthole bottom hole, is inserted into the anchor pole for deep tunnel soft-rock slope, and cause the first anchor pole with
Anchoring cartridge bond-anchorage；
3）To the gap slip casting between the second anchor pole and bolthole, after the completion of slip casting, stop grouting plug, sand are installed at bolthole aperture
After slurry solidification, pallet and nut are installed, complete the anchoring of the anchor pole for deep tunnel soft-rock slope.
Compared with prior art, the beneficial effects of the invention are as follows：
1）The present invention has simple in construction, easy to operate, the advantages of cost is low.
2）During present invention anchoring, the first anchor pole is anchored using anchoring cartridge, and the second anchor pole is bonded by the way of slip casting,
Do not anchored at hollow anchor bar, fully reserve extending deformation of member space, the carrying energy of energy auto-control surrouding rock stress redistribution
Power, when surrouding rock deformation occurs, hollow anchor bar yield deformation is even broken, and the anchor cable in hollow anchor bar can bear huge resist
Power, realize the preventing and treating to roadway deformation.
3）Do not anchored at the hollow anchor bar of the present invention, be respectively equipped with barrier plate close to the both ends of hollow anchor bar, barrier plate can
Mortar and anchoring cartridge enter in reserved section during preventing slip casting, and extending component is by bonding phenomenon when avoiding anchor rod anchored
Occur, make compressive strain effect good.
Brief description of the drawings
Fig. 1 is the structural representation of the anchor of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the present invention the anchor pole 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 front end with the second anchor pole of rear end 13 of the first anchor pole 9 respectively
Welding.It is provided with anchor cable 8 in 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 and the respectively
The front end connection of two anchor poles 13.One barrier plate 11 is installed, barrier plate 11 is placed in the first anchor pole 9 on the first described anchor pole 9
Rear end.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.Second anchor
Rear end is provided with nut 1, pallet 2 and stop grouting plug 5 on bar 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 the anchor pole for deep tunnel soft-rock slope of the present invention comprises the following steps：
1）Anchor rod anchored position is determined in deep tunnel, bores bolthole；
2）After bolthole shaping, the diameter and length of anchoring cartridge 4 are determined according to the bar footpath in the aperture of bolthole and the first anchor pole 9
Degree, anchoring cartridge 4 is filled in toward bolthole bottom hole, be inserted into the anchor pole for deep tunnel soft-rock slope, and cause the first anchor
Bar 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, stop grouting plug is installed at bolthole aperture
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.
The anchoring process of the present invention, Anchor Agent anchorage style and slip casting anchorage style are combined, and ensure that anchor pole is extending
Component has the suitable headspace not anchored, and can install pallet 2 and form certain prestressing force.The anchoring process of the present invention,
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, can be automatic
Regulate and control the bearing capacity of surrouding rock stress redistribution, when surrouding rock deformation occurs, hollow bolt moment yield deformation is even broken, but
Anchor cable can bear huge drag, realize the preventing and treating to roadway deformation.
Claims (5)
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.
A kind of 5. anchoring side of the anchor pole for deep tunnel soft-rock slope in claim 1-4 described in any claim
Method, comprise the following steps：
1）Anchor rod anchored position is determined in deep tunnel, bores bolthole；
2）After bolthole shaping, the diameter and length of anchoring cartridge are determined according to the bar footpath in the aperture of bolthole and the first anchor pole,
Anchoring cartridge is filled in toward bolthole bottom hole, is inserted into the anchor pole for deep tunnel soft-rock slope, and cause the first anchor pole with
Anchoring cartridge bond-anchorage；
3）To the gap slip casting between the second anchor pole and bolthole, after the completion of slip casting, stop grouting plug, sand are installed at bolthole aperture
After slurry solidification, pallet and nut are installed, complete the anchoring of the anchor pole for deep tunnel soft-rock slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884181.2A CN107489437A (en) | 2017-09-26 | 2017-09-26 | A kind of anchor pole and anchoring process for deep tunnel soft-rock slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884181.2A CN107489437A (en) | 2017-09-26 | 2017-09-26 | A kind of anchor pole and anchoring process for deep tunnel soft-rock slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107489437A true CN107489437A (en) | 2017-12-19 |
Family
ID=60653185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710884181.2A Withdrawn CN107489437A (en) | 2017-09-26 | 2017-09-26 | A kind of anchor pole and anchoring process for deep tunnel soft-rock slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489437A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663384A (en) * | 2018-06-08 | 2018-10-16 | 太原理工大学 | A kind of anchor pole detection without damage device and method based on TDR |
| CN109750664A (en) * | 2019-01-28 | 2019-05-14 | 中国矿业大学(北京) | A kind of Novel Bipolar constant resistance and large deformation anchor rod component |
| CN110925003A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Extensible anchor rod with multistage stress and displacement control and multifunctional intelligent monitoring device |
| CN112064636A (en) * | 2020-09-20 | 2020-12-11 | 内蒙古福城矿业有限公司 | High-anchoring-force extensible anchor cable device and implementation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041360U (en) * | 1988-04-16 | 1989-07-19 | 西安矿业学院 | Snake type telescopic anchoring-bolt |
| CN2057459U (en) * | 1989-04-27 | 1990-05-23 | 中国矿业大学 | Stretchable anchoring-bolt |
| CN2514115Y (en) * | 2001-10-31 | 2002-10-02 | 何炳银 | Expansion-type telescopic metallic anchor rod |
| CN102518460A (en) * | 2011-12-21 | 2012-06-27 | 湖南科技大学 | Preserved anchorage method for prevention and control of rockburst |
| CN207212381U (en) * | 2017-09-26 | 2018-04-10 | 湖南科技大学 | A kind of anchor pole for deep tunnel soft-rock slope |
-
2017
- 2017-09-26 CN CN201710884181.2A patent/CN107489437A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041360U (en) * | 1988-04-16 | 1989-07-19 | 西安矿业学院 | Snake type telescopic anchoring-bolt |
| CN2057459U (en) * | 1989-04-27 | 1990-05-23 | 中国矿业大学 | Stretchable anchoring-bolt |
| CN2514115Y (en) * | 2001-10-31 | 2002-10-02 | 何炳银 | Expansion-type telescopic metallic anchor rod |
| CN102518460A (en) * | 2011-12-21 | 2012-06-27 | 湖南科技大学 | Preserved anchorage method for prevention and control of rockburst |
| CN207212381U (en) * | 2017-09-26 | 2018-04-10 | 湖南科技大学 | A kind of anchor pole for deep tunnel soft-rock slope |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663384A (en) * | 2018-06-08 | 2018-10-16 | 太原理工大学 | A kind of anchor pole detection without damage device and method based on TDR |
| CN109750664A (en) * | 2019-01-28 | 2019-05-14 | 中国矿业大学(北京) | A kind of Novel Bipolar constant resistance and large deformation anchor rod component |
| CN110925003A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Extensible anchor rod with multistage stress and displacement control and multifunctional intelligent monitoring device |
| CN112064636A (en) * | 2020-09-20 | 2020-12-11 | 内蒙古福城矿业有限公司 | High-anchoring-force extensible anchor cable device and implementation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171219 |
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| WW01 | Invention patent application withdrawn after publication |