CN105840220A - Combined supporting structure - Google Patents
Combined supporting structure Download PDFInfo
- Publication number
- CN105840220A CN105840220A CN201610168783.3A CN201610168783A CN105840220A CN 105840220 A CN105840220 A CN 105840220A CN 201610168783 A CN201610168783 A CN 201610168783A CN 105840220 A CN105840220 A CN 105840220A
- Authority
- CN
- China
- Prior art keywords
- anchor
- hollow grouting
- hollow
- bar
- grouting anchor
- 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.)
- Pending
Links
- 230000008093 supporting effect Effects 0.000 title abstract description 11
- 238000004873 anchoring Methods 0.000 claims abstract description 9
- 238000007569 slipcasting Methods 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 9
- 239000011440 grout Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 12
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 238000010008 shearing Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- 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
-
- 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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a combined supporting structure comprising a hollow grouting anchor rod body; the hollow grouting anchor rod body is provided with a grouting channel; the outer surface of the front rod of the hollow grouting anchor rod body is provided with a barb-shape thread anchoring segment; the hollow grouting anchor rod body front rod is connected with a hollow grouting anchor rod body rear rod through a combined type connecting sleeve; the end portion of the hollow grouting anchor rod body front rod is provided with an anchor head; the stock outlet of the anchor head is connected with the hollow grouting anchor rod body grouting channel; the hollow grouting anchor rod body is provided with a plurality of radial grouting holes connected with the grouting channel; the hollow grouting anchor rod body rear rod is provided with a stop plug; the stop plug is connected with an anchor bearing plate; the anchor bearing plate is connected with a nut; the end portion of the hollow grouting anchor rod body rear rod is provided with a block plug. The anchor rod is stable in quality, can ensure enough pulling resistance, can prevent the anchor rod to have front-force damages, and grouting is plump, thus enhancing anchoring force between the anchor rod and surrounding rocks, and reinforcing supporting effect.
Description
Technical field
The present invention relates to a kind of supporting construction, specifically a kind of combined retaining structure, belong to constructing tunnel field.
Background technology
Tunnel is the engineering works being embedded in stratum, is a kind of form of human use's underground space.Tunnel
Construction typically uses drilling and blasting method, and bolt-spary supports is one of its core element, and supporting construction is in the weight of bolt-spary supports
Weight, anchor pole is a main element of supporting construction, and anchor pole is the important composition portion of constructing tunnel bolt-spary supports
Point, it is the member system structure of Rock And Soil reinforcing, by the longitudinal pulling force effect of anchor rod body, overcomes Rock And Soil
Resistance to tension, well below the shortcoming of anti-pressure ability, seemingly limits Rock And Soil and departs from substance, macroscopically
Seeing the cohesiveness being the increase in Rock And Soil, the quality of anchor bolt construction quality is related to the stability of Tunnel.
Anchor bolt construction technology operation in existing tradition supporting construction is various, and quality is unstable, and anchor hole is too deep easily
Bending, shearing strength is poor, only has grout outlet on drill bit, and slip casting is the fullest, and in constructing tunnel, indivedual country rocks are not
Surely, the problem easily falling block.
Summary of the invention
It is an object of the invention to provide a kind of combined retaining structure, this combined retaining structure steady quality, can
Ensureing enough withdrawal resistances, before preventing again anchor pole from occurring, power is destroyed, and slip casting is full, increases anchor pole and country rock
Anchor force, strengthening supporting effect.
For achieving the above object, the technical solution used in the present invention is: a kind of combined retaining structure, including hollow
Grouted anchor bar body, after described hollow grouting anchor body is divided into hollow grouting anchor body front bar and hollow grouting anchor body
Bar, described hollow grouting anchor body front bar and hollow grouting anchor body rear bar axial inner arrange slip casting passage, in
Before empty grouted anchor bar body, rod outer surface arranges barb-like screw thread anchoring section, and described hollow grouting anchor body front bar is led to
Cross combination type adapter sleeve to be connected with hollow grouting anchor body rear bar, the end of described hollow grouting anchor body front bar
Being provided with anchor head, the grout outlet of anchor head communicates with the slip casting passage of hollow grouting anchor, hollow grouting anchor body footpath
To being machined with multiple injected hole communicated with slip casting passage, described hollow grouting anchor body rear bar is only provided with
Slurry plug, described stop grouting plug is connected with anchor plate, and described anchor plate is connected with nut, described hollow slip casting
After anchor bar body, boom end is provided with stifled slurry plug；Described combined retaining structure centered by a hollow grouting anchor body,
Four hollow grouting anchor bodies are symmetrically distributed in its surrounding, and the rear end of described five hollow grouting anchor bodies is by horizontal stroke
Connect to dowel steel and form an integral structural system.
Further, described anchor head is the cross bit with drill bit blade.
Further, after described hollow grouting anchor body, rod outer surface arranges barb-like screw thread anchoring section.
The invention has the beneficial effects as follows: rod outer surface before the hollow grouting anchor body in described combined retaining structure
Be threaded barb-like, it is possible to increase anchor force, hollow grouting anchor body front bar by combination type adapter sleeve with in
Empty grouted anchor bar body rear bar connects increases its shearing strength, and hollow grouting anchor body is radially machined with multiple and slip casting
The injected hole that passage communicates, increases the anchor force of anchor pole and country rock, strengthening supporting effect, solves constructing tunnel
In indivedual country rocks unstable, the problem of easily falling block.
Accompanying drawing explanation
Fig. 1 is the structural representation of hollow of the present invention note anchor bar body；
Fig. 2 is the structural representation of the present invention；
In figure, 1. hollow grouting anchor body, 2. hollow grouting anchor body front bar, 3. hollow grouting anchor body
Rear bar, 4. slip casting passage, 5. combination type adapter sleeve, 6. anchor head, 7. injected hole, 8. stop grouting plug, 9. anchor
Backing plate, 10. nut, 11. stifled slurry plugs, 12. dowel steels.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
As Fig. 1 is to shown in 2, and including hollow grouting anchor body 1, described hollow grouting anchor 1 body is divided into hollow
Grouted anchor bar body front bar 2 and hollow grouting anchor body rear bar 3, described hollow grouting anchor body front bar 2 and hollow
Grouted anchor bar body rear bar 3 axial inner arranges slip casting passage 4, and hollow grouting anchor body front bar 2 outer surface is arranged
Barb-like screw thread anchoring section, described hollow grouting anchor body front bar 2 is noted with hollow by combination type adapter sleeve 5
Slurry anchor bar body rear bar 3 connects, and the end of described hollow grouting anchor body front bar 2 is provided with anchor head 6, anchor head
The grout outlet of 6 communicates with the slip casting passage 4 of hollow grouting anchor, and hollow grouting anchor body is radially machined with multiple
The injected hole 7 communicated with slip casting passage, described hollow grouting anchor body rear bar 3 is provided with stop grouting plug 8,
Described stop grouting plug 8 is connected with anchor plate 9, and described anchor plate 9 is connected with nut 10, described hollow
Grouted anchor bar body rear bar 3 end is provided with stifled slurry plug 11, and described combined retaining structure is with a hollow slip casting anchor
Centered by the body of rod 1, four hollow grouting anchor bodies 1 are symmetrically distributed in its surrounding, described five hollow slip casting anchors
The rear end of the body of rod 1 connects formation one integral structural system by pass force crossly bar 12.
Further, described anchor head 6 is the cross bit with drill bit blade.
Further, described hollow grouting anchor body rear bar 3 outer surface arranges barb-like screw thread anchoring section, further
Increase anchor force.
During use, the anchor pole in described combined supporting knot knot carries drill bit, creeps into design by jumbolter
The degree of depth, installs stop grouting plug 8, anchor plate 9 and nut 10 successively, installs by slip casting machine according to country rock bar
Part sets grouting pressure and carries out slip casting, and hollow grouting anchor body front bar 2 outer surface is threaded barb-like, it is possible to
Increasing anchor force, hollow grouting anchor body front bar 2 is by combination type adapter sleeve 5 and hollow grouting anchor body rear bar
3 connect its shearing strength of increase, and hollow grouting anchor body is radially machined with multiple note communicated with slip casting passage 4
Slurry hole 7, increases the anchor force of anchor pole and country rock, and this rockbolt stress is uniform, has both been provided that enough withdrawal resistances,
Anchor pole generation failure by shear, strengthening supporting effect can be prevented again.
Described combined retaining structure centered by a hollow grouting anchor body 1, four hollow grouting anchor bodies 1
Being symmetrically distributed in its surrounding, the rear end of described five hollow grouting anchor bodies 1 is connected by pass force crossly bar 12
Form an integral structural system, give full play to pulling capacity and the shearing resistance of single anchor pole, make whole anchoring system be subject to
Power is more uniform, solves indivedual country rocks in constructing tunnel unstable, the problem easily falling block.
Claims (3)
1. a combined retaining structure, it is characterised in that include hollow grouting anchor body (1), described hollow is noted
Slurry anchor pole (1) body is divided into hollow grouting anchor body front bar (2) and hollow grouting anchor body rear bar (3), described in
Empty grouted anchor bar body front bar (2) and hollow grouting anchor body rear bar (3) axial inner arrange slip casting passage (4),
Hollow grouting anchor body front bar (2) outer surface arranges barb-like screw thread anchoring section, described hollow grouting anchor
Body front bar (2) is connected with hollow grouting anchor body rear bar (3) by combination type adapter sleeve (5), described
The end of hollow grouting anchor body front bar (2) is provided with anchor head (6), and the grout outlet of anchor head (6) is noted with hollow
The slip casting passage (4) of slurry anchor pole communicates, and hollow grouting anchor body is radially machined with and multiple communicates with slip casting passage
Injected hole (7), described hollow grouting anchor body rear bar (3) is provided with stop grouting plug (8), described
Stop grouting plug (8) is connected with anchor plate (9), and described anchor plate (9) is connected with nut (10), described
Hollow grouting anchor body rear bar (3) end stifled slurry plug (11) is installed；Described combined retaining structure is with one
Centered by hollow grouting anchor body (1), four hollow grouting anchor bodies (1) are symmetrically distributed in its surrounding, institute
The rear end stating five hollow grouting anchor bodies (1) connects formation one overall structure by pass force crossly bar (12)
System.
A kind of combined retaining structure the most according to claim 1, it is characterised in that described anchor head (6)
For the cross bit with drill bit blade.
A kind of combined retaining structure the most according to claim 1 and 2, it is characterised in that described hollow
Grouted anchor bar body rear bar (3) outer surface arranges barb-like screw thread anchoring section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168783.3A CN105840220A (en) | 2016-03-23 | 2016-03-23 | Combined supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168783.3A CN105840220A (en) | 2016-03-23 | 2016-03-23 | Combined supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105840220A true CN105840220A (en) | 2016-08-10 |
Family
ID=56582943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610168783.3A Pending CN105840220A (en) | 2016-03-23 | 2016-03-23 | Combined supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105840220A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620603A (en) * | 2017-09-26 | 2018-01-23 | 中国矿业大学 | A kind of novel slurry filling anchor pole with steel loop bar |
| CN112459818A (en) * | 2020-12-07 | 2021-03-09 | 贵州理工学院 | Special anti-loosening anchor rod for roadway support |
| WO2023285831A1 (en) * | 2021-07-16 | 2023-01-19 | Hypertunnel Ip Limited | Integrated drilling injection and extraction device and method |
-
2016
- 2016-03-23 CN CN201610168783.3A patent/CN105840220A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620603A (en) * | 2017-09-26 | 2018-01-23 | 中国矿业大学 | A kind of novel slurry filling anchor pole with steel loop bar |
| CN107620603B (en) * | 2017-09-26 | 2023-09-22 | 中国矿业大学 | Novel grouting anchor rod with steel loop bar |
| CN112459818A (en) * | 2020-12-07 | 2021-03-09 | 贵州理工学院 | Special anti-loosening anchor rod for roadway support |
| WO2023285831A1 (en) * | 2021-07-16 | 2023-01-19 | Hypertunnel Ip Limited | Integrated drilling injection and extraction device and method |
| GB2609017A (en) * | 2021-07-16 | 2023-01-25 | Hypertunnel Ip Ltd | Integrated drilling injection and extraction device and method |
| GB2609017B (en) * | 2021-07-16 | 2023-07-12 | Hypertunnel Ip Ltd | Integrated drilling injection and extraction device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160810 |
|
| WD01 | Invention patent application deemed withdrawn after publication |