CN110410121A - A kind of fragmented rock body anchor bar suspension device - Google Patents
A kind of fragmented rock body anchor bar suspension device Download PDFInfo
- Publication number
- CN110410121A CN110410121A CN201910735345.4A CN201910735345A CN110410121A CN 110410121 A CN110410121 A CN 110410121A CN 201910735345 A CN201910735345 A CN 201910735345A CN 110410121 A CN110410121 A CN 110410121A
- Authority
- CN
- China
- Prior art keywords
- rock body
- fragmented rock
- anchor pole
- fixed
- section
- 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.)
- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 48
- 239000000725 suspension Substances 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 21
- 239000011241 protective layer Substances 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 239000002002 slurry Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 239000011083 cement mortar Substances 0.000 abstract description 8
- 238000010276 construction Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of fragmented rock body anchor bar suspension devices, including anchor pole and protective layer；Extend in drilling on anchor pole insertion fragmented rock body and to outside fragmented rock body, anchor pole is T-shaped including wing plate and the web being vertically fixed at wing plate center along its length；There are assembly section between the two sides and wing plate of web, exhaust pipe and Grouting Pipe are fixed in assembly section；It is fixed section that T shape anchor pole, which is inserted into bore inner, and external to carry section, fixed section is fixed in broken ground with cement mortar；It carries and is provided with card slot on the web of section；Protective layer includes the steel mesh being arranged in outside fragmented rock body, the steel mesh matching is fixed forms concrete bearer network in card slot, in the upper sprinkling concrete of concrete bearer network, the protective layer for being bonded and being fixedly connected with fragmented rock body outer surface is formed after concrete setting;It improves work efficiency, and fixed function can be played in the position for being inconvenient to weld, keep protective layer stronger, safety coefficient is high, easy to use.
Description
Technical field:
The invention belongs to building hydrotechnics fields, and in particular to a kind of fragmented rock body anchor bar suspension device.
Background technique:
With the continuous improvement that people live, science and technology is showing improvement or progress day by day, and it is increasing to build facility in underground, as hydraulic tunnel,
Lower workshop, traffic tunnel etc., but often encounter fragmented rock body during building and danger is brought to construction personnel, because
This fragmented rock body generally requires to use suspension device for reinforcing fragmented rock body, guarantees the safety of construction personnel and the stabilization of rock mass
Property.
Anchor pole is the important device for supporting construction is fixed, and can effectively improve the stability of supporting construction,
Due to formation condition complexity, there are tomography, joint, loose block stone, Rheological Rock Mass etc., rockbolt stress is complicated, may have tension, by
Pressure, by it is curved, the operating conditions such as cut, existing common bolt is circle, since circular structure is single, and support anchor rod it is main by
The power arrived is by curved and tension, and the complex geologic conditions of fragmented rock body, and circle anchor pole can not adapt to complicated and changeable break completely
Detritus body, studying a kind of bending resistance, tensile property, good anchor bar suspension device is obviously necessary.
Summary of the invention:
For defect existing for existing equipment and problem, the present invention provides a kind of fragmented rock body anchor bar suspension device, effective to solve
The problem of bending resistance, tensile property existing for existing equipment of having determined are poor, and safety coefficient is low and using trouble.
The present invention solves scheme used by its technical problem: a kind of fragmented rock body anchor bar suspension device, including anchor pole
And protective layer；Extend in drilling on the anchor pole insertion fragmented rock body and to outside fragmented rock body；The T-shaped packet of the anchor pole
The web for including wing plate and being vertically fixed at wing plate center along its length；There are assembly section between the two sides and wing plate of web,
Exhaust pipe and Grouting Pipe are respectively fixed in the assembly section of two sides；It is fixed section that T shape anchor pole, which is inserted into bore inner, external to be
Section is carried, the fixed section is fixed in broken ground with cement mortar；Card slot is provided on the web of the carrying section；Institute
Stating protective layer includes the steel mesh being arranged in outside fragmented rock body, and the steel mesh matching fixing forms concrete in card slot and holds
Support grid, the gunite concrete on concrete bearer network, formation is bonded with fragmented rock body outer surface after concrete setting and fixation connects
The protective layer connect.
Further, the anchor pole inner end is the inclined-plane in 45 degree.
Further, grout stopping device is provided at the aperture of the drilling.
Further, the strength grade of concrete is not less than C20.
Further, the card slot is the translot of opening outwardly, the bar diameter of the width of translot and the steel mesh
It is adapted.
Beneficial effects of the present invention: the present invention provides a kind of support anchor rod devices for fragmented rock body, by T shape anchor pole
It in insertion fragmented rock body and reinforces, and is fixed with protective layer in the outer end of T shape anchor pole, according to material mechanics principle, in material phase
Under conditions of equal with, section, the bearing capacity of tension, compression anchor pole is unrelated with section configuration, but by bent anchor bar bending resistance,
It is very big with section configuration relationship；Meanwhile compared to traditional round anchor pole, phase equal section T shape anchor pole side surface area is bigger, has
Preferably bonding withdrawal resistance, and the edge of a wing setting of T shape anchor pole has preferable anti-bending strength in tension side, and compared to traditional
Anchor pole also has additional the card slot for being fixed temporarily steel mesh in the outer end of T shape anchor pole, can preliminarily form after steel mesh again to reinforcing bar
Net is welded, and is reduced the construction time and number of doing over again, is improved work efficiency, and can rise in the position for being inconvenient to weld
To fixed function, keep protective layer stronger, safety coefficient is high, easy to use, resists existing for effective solution existing equipment
Curved, the problem of tensile property is poor, and safety coefficient is low and using trouble.
Detailed description of the invention:
Fig. 1 is invention use state diagram.
Fig. 2 is the structural schematic diagram of anchor pole.
Fig. 3 is anchor pole side view.
Fig. 4 is fixed section structural schematic diagram.
Fig. 5 is supporting section structural schematic diagram.
Figure label are as follows: 1 is anchor pole, and 2 be protective layer, and 3 be steel mesh, and 4 be wing plate, and 5 be web, and 6 be card slot, and 7 be row
Tracheae, 8 be Grouting Pipe, and 9 be cement mortar.
Specific embodiment:
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1: a kind of anchor rod device for fragmented rock body supporting is present embodiments provided, compared to traditional doughnut
Bar has better bending resistance and extraction-resistant behavior, copes with complicated geological environment；As shown in Figure 1, a kind of fragmented rock body anchor pole
Suspension device, including anchor pole 1 and protective layer 2；Output the circular bore that diameter is 42-90mm in advance on fragmented rock body, it is described
Anchor pole insertion fragmented rock body on drilling in and extend to outside fragmented rock body, wherein anchor pole insertion bore inner is fixation
Section, fixed section are poured through cement mortar 9 and are fixed in drilling, and the injecting cement paste strength standard value of cement mortar 9 is typically no less than
30MPa, so that the inner segment of anchor pole 1 is fixed in fragmented rock body, for carrying section, the carrying section is fixed to be connected the external anchor pole that drills
It is connected to and the matched protective layer in fragmented rock body outer surface.
As shown in Fig. 2, the anchor pole 1 is T shape made of reinforcing bar after common hot-rolled steel or high-strength heat treatment, including the wing
Edge towards tension side wing plate 4 and be along its length vertically fixed on web 5 at wing plate center.Injecting cement paste and surrounding formations rock
Cohesive force between body, depending on the hardness and bore diameter of rock mass, and the bonding withdrawal resistance between injecting cement paste and anchor bar body, depend on
In outside bolt diameter, rock-bolt length, anchor pole shape is additionally depended on；T shape anchor pole is compared to existing round anchor pole, and T shape anchor pole is than circle
The side surface area of shape anchor pole is big, thus in terms of bonding withdrawal resistance angle, performance is more preferable；The present embodiment select anchor pole wall thickness be
The length of 4-8mm, wing plate and web is 30mm, length 3-9m；As shown in Figure 3-4, the two sides of the web 5 and wing plate it
Between there are assembly section, the assembly section of two sides is respectively arranged with exhaust pipe 7 and Grouting Pipe 8, and Grouting Pipe 8 and exhaust pipe 7 are respectively arranged
At T shape anchor pole wing plate 4 and 5 angle of cut of web, fixed aperture can be reserved at the web 5 of anchor pole, with the fixed Grouting Pipe 8 of galvanized wire of perforating
And exhaust pipe 7, Grouting Pipe 8 and exhaust pipe 7 are fixed on T shape anchor pole and form integral structure, and together in insertion drilling.
As shown in figure 5, being provided with card slot 6 on the web of the carrying section；The protective layer 2 includes being arranged in kata-rocks
External steel mesh 3, steel mesh 3 are formed by the reinforcing bar spelling group that diameter is 6mm -12mm；The matching of steel mesh 3 is fixed in card
Weld together in slot 6 and with anchor pole 1, to form concrete bearer network, the coagulation in fragmented rock body appearance face interval
The spacing of native bearer network and fragmented rock body outer surface is 100mm, takes proportioned concrete ejection to carry in concrete with pumping
That nets is upper, and the protective layer that the fitting of fragmented rock body outer surface is formd after concrete setting and is fixedly connected, protective layer 2 is i.e. with steel
Muscle net is the armored concrete of keel；The strength grade of concrete is not less than C20.
Embodiment 2: the present embodiment is substantially the same manner as Example 1, and difference is: the anchor pole inner end is in 45 degree
Inclined-plane.
As shown in Fig. 2, the inner face of anchor pole 1 is in 45 degree of inclined-plane, what inner end can be stronger is fixed in drilling
And go deep into the inside of fragmented rock body, while anchor pole inner end is 45 degree of sharp inclined-planes, and anchor pole can be hammered from anchor pole outer end, it will
The length exposed to anchor pole in fragmented rock body of squeezing into of anchor pole by a small margin is finely adjusted, and not only increases anchor pole 1 in fragmented rock body
Interior stability and fastness can also adjust distance of the card slot relative to fragmented rock body, so as to adjust steel mesh relative to broken
The distance of detritus body increases or reduces the jet thickness of concrete.
Embodiment 3: the present embodiment is substantially the same manner as Example 1, and difference is: being provided with only at the aperture of the drilling
Starch device.
In the construction process, it is the density for guaranteeing injecting cement paste, according to the position and orientation of drilling, can be inserted after first slip casting
Bar, or first inserted link grouting behind shaft or drift lining.When for facing upward inclined borehole elder generation inserted link grouting behind shaft or drift lining, grout stopping device should be set at hell, it is described only to starch
Device be with the matched cylinder of drilling, be provided with round or taper through-hole at cylindrical center, the end of anchor pole be provided with
The compatible sealing shroud of through-hole, in sealing shroud, Grouting Pipe waits for exhaust pipe pulp for anchor pole, exhaust pipe and the equal sealing shroud of Grouting Pipe
After can only starch.When injecting cement mortar 9 into drilling, exhaust pipe is connected to cement mortar, is equivalent to linker, works as exhaust pipe
At gas outlet after pulp, it is known that drilling is full of by cement mortar 9, stops the slip casting into drilling, easy to use, is applicable in
Range is wide, and function is more.
Embodiment 4: the present embodiment is substantially the same manner as Example 1, and difference is: the card slot is the cross of opening outwardly
Slot.
Match referring to Fig. 3 with Fig. 5, the opening size of the card slot 6 with steel mesh, and the translot outwardly that is open, it is horizontal
The width of slot is adapted with the bar diameter of the steel mesh, is carried and is provided with aperture on the wing plate 4 of section, and steel wire or galvanized wire are across small
Hole, end are banded on steel mesh, can further be fixed to steel mesh, card slot 6 is set as translot not only manufacture craft
Simply, and facilitate in reinforcing bar card entry slot, it is easy to use, it is at low cost, steel mesh can be fixed in advance and form preliminary steel
Muscle net, the hook being correspondingly arranged with translot can further reinforced steel net, prevent steel mesh from shifting, then again to steel
Muscle net is welded, not only convenient welding, and reduces the construction time and number of doing over again, in the place that welding is inconvenient, even
It can also fix without welding by the very secured of steel mesh.
Claims (5)
1. a kind of fragmented rock body anchor bar suspension device, including anchor pole and protective layer；Brill on the anchor pole insertion fragmented rock body
Extend in hole and to outside fragmented rock body；Include wing plate it is characterized by: the anchor pole is T-shaped and vertically fix along its length
Web at wing plate center；There are assembly section between the two sides and wing plate of web, the row of being respectively fixed in the assembly section of two sides
Tracheae and Grouting Pipe；It is fixed section that T shape anchor pole, which is inserted into bore inner, external for carrying section, the fixed section cement bonded sand
Slurry is fixed in broken ground；Card slot is provided on the web of the carrying section；The protective layer includes being arranged in kata-rocks
External steel mesh, the steel mesh matching is fixed forms concrete bearer network in card slot, sprays on concrete bearer network
Concrete is penetrated, forms the protective layer for being bonded and being fixedly connected with fragmented rock body outer surface after concrete setting.
2. fragmented rock body anchor bar suspension device according to claim 1, it is characterised in that: the anchor pole inner end is in 45
The inclined-plane of degree.
3. fragmented rock body anchor bar suspension device according to claim 1, it is characterised in that: be arranged at the aperture of the drilling
There is grout stopping device.
4. fragmented rock body anchor bar suspension device according to claim 1, it is characterised in that: the strength grade of concrete
Not less than C20.
5. fragmented rock body anchor bar suspension device according to claim 1, it is characterised in that: the card slot is to be open outwardly
Translot, the width of translot is adapted with the bar diameter of the steel mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735345.4A CN110410121B (en) | 2019-08-09 | 2019-08-09 | Broken rock mass anchor bolt supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735345.4A CN110410121B (en) | 2019-08-09 | 2019-08-09 | Broken rock mass anchor bolt supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110410121A true CN110410121A (en) | 2019-11-05 |
| CN110410121B CN110410121B (en) | 2021-06-25 |
Family
ID=68367057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735345.4A Expired - Fee Related CN110410121B (en) | 2019-08-09 | 2019-08-09 | Broken rock mass anchor bolt supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410121B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761676A (en) * | 2021-02-04 | 2021-05-07 | 岳阳市公路桥梁基建总公司 | UHPC tunnel lining structure and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235002A (en) * | 2011-04-11 | 2011-11-09 | 董兰田 | Fixed anchor pile for farmland |
| KR20120101801A (en) * | 2011-03-07 | 2012-09-17 | (주)케이에스텍 | Steel pipe for supporting a structure |
| CN203049591U (en) * | 2013-01-09 | 2013-07-10 | 中国水电顾问集团贵阳勘测设计研究院 | Reinforced structure of fractured rock mass and high oriented side slope |
| CN104929670A (en) * | 2015-07-02 | 2015-09-23 | 徐州工程学院 | Wing type anchor rod |
| CN205776152U (en) * | 2016-05-27 | 2016-12-07 | 福建工程学院 | Prestressed anchor waveform sheet pile retaining structure |
| CN108533273A (en) * | 2018-04-11 | 2018-09-14 | 北京市政建设集团有限责任公司 | A kind of novel pipe shed for Support System in Soft Rock Tunnels leading pre-supporting |
-
2019
- 2019-08-09 CN CN201910735345.4A patent/CN110410121B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120101801A (en) * | 2011-03-07 | 2012-09-17 | (주)케이에스텍 | Steel pipe for supporting a structure |
| CN102235002A (en) * | 2011-04-11 | 2011-11-09 | 董兰田 | Fixed anchor pile for farmland |
| CN203049591U (en) * | 2013-01-09 | 2013-07-10 | 中国水电顾问集团贵阳勘测设计研究院 | Reinforced structure of fractured rock mass and high oriented side slope |
| CN104929670A (en) * | 2015-07-02 | 2015-09-23 | 徐州工程学院 | Wing type anchor rod |
| CN205776152U (en) * | 2016-05-27 | 2016-12-07 | 福建工程学院 | Prestressed anchor waveform sheet pile retaining structure |
| CN108533273A (en) * | 2018-04-11 | 2018-09-14 | 北京市政建设集团有限责任公司 | A kind of novel pipe shed for Support System in Soft Rock Tunnels leading pre-supporting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761676A (en) * | 2021-02-04 | 2021-05-07 | 岳阳市公路桥梁基建总公司 | UHPC tunnel lining structure and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110410121B (en) | 2021-06-25 |
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