CN202768031U - Hollow grouting anchor rod - Google Patents
Hollow grouting anchor rod Download PDFInfo
- Publication number
- CN202768031U CN202768031U CN 201220406327 CN201220406327U CN202768031U CN 202768031 U CN202768031 U CN 202768031U CN 201220406327 CN201220406327 CN 201220406327 CN 201220406327 U CN201220406327 U CN 201220406327U CN 202768031 U CN202768031 U CN 202768031U
- Authority
- CN
- China
- Prior art keywords
- rod
- hole
- sleeve
- grouting plug
- stop grouting
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011435 rock Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011440 grout Substances 0.000 abstract 4
- 239000011083 cement mortar Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010011376 Crepitations Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000007582 slurry-cast process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a hollow grouting anchor rod which comprises a hollow rod body, a rod head, a grout stopping plug and a dish-shaped tray. The grout stopping plug is installed on the bottom of the rod body and on the upper portion of the dish-shaped tray. A torque nut is installed below the grout stopping plug. The top of the rod body and the rod head are fixedly connected through a sleeve. A grouting hole is formed in the side wall of the sleeve. According to the designed hollow grouting anchor rod, the problems that when retaining and protecting are conducted through a traditional hollow grouting anchor rod under complex rock mass environment such as rock mass joint, crack and parting, setting time of grout is long, pretightening force cannot be quickly produced and the effect of the retaining and the protecting can not be achieved are solved.
Description
Technical field
The utility model belongs to civil engineering and exploitation of mineral resources field, is specifically related to a kind of hollow grouting anchor for the supporting of slope, tunnel.
Background technology
In the exploitation of the underground constructions such as earth's surface engineering and tunnel, stope, mine deep part, often cause the strong exploitation such as highland pressure, High-geotemperature, high karst hydraulic pressure disturbance.Under the high-ground stress effect, larger variation usually occurs in the deformation characteristic of rock mass, shows as obvious rheology, open in ROCK MASS JOINT, crack, a large amount of new crackles occur, causes dilatation to be expanded simultaneously, High-geotemperature also causes STRESS VARIATION, form new crack, for mine support brings a lot of difficulties, in order to control better country rock, people adopt hollow grouting anchor its support reinforcement mode, country rock is carried out slip casting fill up the crack, form whole country rock, control roadway deformation.
When supporting is carried out at the engineering tops such as roadway, hollow grouting anchor is inserted in the pre-drilled boring of earth's surface rock mass or chamber surrounding rock body, the stop grouting plug of anchor pole bottom clogs boring, through hole by body of rod bottom injected water cement mortar in the hole, need withstand grouted anchor bar slip casting this moment, can not carry in three days, after cement mortar is condensed, just pretightning force can be produced, supporting can't be realized rapidly.
The utility model content
When adopting traditional hollow grouting anchor under the complicated rock mass environment such as is opened in ROCK MASS JOINT, crack, to carry out supporting in order to solve, cement mortar is long time of setting, can't produce rapidly pretightning force, realize the problems such as supporting effect, the utility model has designed a kind of Novel hollow grouted anchor bar.
The technical scheme that the utility model addresses the above problem is: a kind of hollow grouting anchor, comprise hollow lever, bar head, stop grouting plug, stop grouting plug is installed body of rod bottom, below mounting torque nut, body of rod top is fixedly connected with by sleeve with the bar head, and sleeve lateral wall has injected hole.Its advantage is: the through hole of slurry filling machine connecting-rod body bottom is by injected hole injected water cement mortar in the boring, and blocks boring with stop grouting plug, prevents that cement mortar from revealing from boring; Torque nut can connect jumbolter, blend the resin anchoring agent cartridge bag by the rotation of rig driven rod head, the resin anchoring agent rate of set is fast, and the termination point of anchor rod body of rod and country rock are bonded together, and makes anchor pole produce rapidly pretightning force, and need not to withstand grouted anchor bar and carry out the slip casing by pressure reinforce adjoining rock, make country rock form whole arch form, overcome the decomposition geostatic stress, reduce the roadway deformation amount, simplify construction technology, improved operating efficiency.
Described grouted anchor bar, sleeve have the radial direction through hole with injected hole UNICOM, and the through hole two ends have the screw thread that matches with the body of rod and bar head.Its advantage is: through hole and injected hole UNICOM, and slurry filling machine is from body of rod through hole injected water cement mortar, and by the injected hole injection hole, screw thread is connected and fixed the body of rod and bar head, guarantees that the bar head is to the mixing effect of resin anchoring agent.
Described grouted anchor bar, the through-hole diameter at bush whorl position is greater than the through-hole diameter at injected hole position.Its advantage is: prevent that the body of rod or bar head from stopping up injected hole, and can't be to boring injected water cement mortar.
Described grouted anchor bar, bar head adopt yield strength to be not less than the solid steel pole of 400MPa.Its advantage is: yield strength can reach the required tensile strength of bolt support greater than the solid steel pole of 400MPa.
Described grouted anchor bar is installed butterfly pallet and pad between torque nut and the stop grouting plug.Its advantage is: when jumbolter rotated, pallet prevented that cement paste and rock dust slurry etc. from stopping up the bolt installer sleeve, and pad can damage when anchor pole reaches pretightning force automatically, prevents that rockbolt installation is excessive.
Described grouted anchor bar, the body of rod links into an integrated entity by several adapter sleeves.Its advantage is: can according to the length of boring, the body of rod of respective numbers be installed by adapter sleeve.
Described grouted anchor bar, hollow lever are full-thread bolt, and stop grouting plug and torque nut and body of rod bottom are spirally connected.Its advantage is: improved anchored force thereby compare the bond area that has increased anchor bar body and injecting paste material with the smooth body of rod, and can be easy for installation arbitrarily, be convenient to cutting, do not need on-the-spot machining screw, just backing plate, pad, torque nut can be installed conveniently.
Description of drawings
Fig. 1 is the schematic diagram that partly cuts open of the present utility model;
Among the figure, 1, torque nut; 2, pad; 3, butterfly pallet; 4, stop grouting plug; 5, the body of rod;
6, adapter sleeve; 7, sleeve; 8, injected hole; 9, bar head.
The specific embodiment
Below in conjunction with accompanying drawing structure of the present utility model is explained in detail explanation, a kind of hollow grouting anchor schematic diagram of the utility model such as Fig. 1, comprise hollow lever 5, bar head 9, stop grouting plug 4, stop grouting plug is installed in body of rod bottom, below mounting torque nut 1, body of rod top is fixedly connected with by sleeve 7 with the bar head, and sleeve lateral wall has injected hole 8.Sleeve has the radial direction through hole with injected hole UNICOM, and the through hole two ends have the screw thread that matches with the body of rod and bar head.The through-hole diameter at bush whorl position is greater than the through-hole diameter at injected hole position.The bar head adopts yield strength to be not less than the solid anchor bar steel body of rod of 400MPa, butterfly pallet 3 and pad 2 are installed between torque nut and the stop grouting plug, the body of rod links into an integrated entity by several adapter sleeves 6, and hollow lever is full-thread bolt, and stop grouting plug and torque nut and body of rod bottom are spirally connected.
When hollow grouting anchor is installed, bar head, sleeve, the body of rod, adapter sleeve, stop grouting plug, pallet, pad, torque nut are assembled, form anchor bar body.It is the solid anchor bar steel body of rod of 400MPa that the bar head adopts yield strength, bar head length is 800mm, diameter is 22mm, with the boring of packing into of diameter 35mm length 500mm middling speed resin anchoring agent cartridge bag, again anchor pole is inserted boring, anchor pole bottom torque nut is connected with the erector of jumbolter, and the bar head that rig drives anchor pole rotates the agitating resin Anchor Agent, after Anchor Agent condenses and reaches the required pretightning force of slip casting, slurry casting machine is connected with body of rod bottom through-hole, and the injected water cement mortar is by slip casing by pressure, fixed breaking surrounding rock, cut off water and gas, the air in the boring is discharged by the space between stop grouting plug and the boring, after slurries are filled with, continuation drives anchor pole with jumbolter, until stop grouting plug is blocked boring, plastic spacer damages, and blocks at last the through hole of body of rod bottom with Anchor Agent, prevent the mortar leakage, finish rockbolt installation.
Technique scheme has only embodied the optimal technical scheme of technical solutions of the utility model; some changes that those skilled in the art may make some part have wherein all embodied principle of the present utility model, belong within the protection domain of the present utility model.
Claims (7)
1. hollow grouting anchor, comprise hollow lever (5), bar head (9), stop grouting plug (4), stop grouting plug is installed in body of rod bottom, it is characterized in that, stop grouting plug below mounting torque nut (1), body of rod top is fixedly connected with by sleeve (7) with the bar head, and sleeve lateral wall has injected hole (8).
2. grouted anchor bar according to claim 1 is characterized in that, described sleeve has the radial direction through hole with injected hole UNICOM, and the through hole two ends have the screw thread that matches with the body of rod and bar head.
3. grouted anchor bar according to claim 2 is characterized in that, the through-hole diameter at bush whorl position is greater than the through-hole diameter at injected hole position.
4. grouted anchor bar according to claim 1 is characterized in that, described bar head adopts yield strength to be not less than the solid steel pole of 400MPa.
5. grouted anchor bar according to claim 1 is characterized in that, butterfly pallet (3) and pad (2) are installed between torque nut and the stop grouting plug.
6. grouted anchor bar according to claim 1 is characterized in that, the body of rod links into an integrated entity by several adapter sleeves (6).
7. grouted anchor bar according to claim 1 is characterized in that, described hollow lever is full-thread bolt, and stop grouting plug and torque nut and body of rod bottom are spirally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220406327 CN202768031U (en) | 2012-08-16 | 2012-08-16 | Hollow grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220406327 CN202768031U (en) | 2012-08-16 | 2012-08-16 | Hollow grouting anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768031U true CN202768031U (en) | 2013-03-06 |
Family
ID=47774614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220406327 Expired - Fee Related CN202768031U (en) | 2012-08-16 | 2012-08-16 | Hollow grouting anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768031U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447755A (en) * | 2017-08-25 | 2017-12-08 | 中铁建设集团有限公司 | A kind of anchor pole equipment and armature boring construction method |
| CN111305236A (en) * | 2020-02-18 | 2020-06-19 | 中国电建集团华东勘测设计研究院有限公司 | Supporting construction and be used for shutoff sleeve structure that stock cross seam was in milk |
| CN112796808A (en) * | 2020-12-28 | 2021-05-14 | 中国科学院武汉岩土力学研究所 | A combined full-length anchoring prestressed bolt, agitator and construction method |
-
2012
- 2012-08-16 CN CN 201220406327 patent/CN202768031U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447755A (en) * | 2017-08-25 | 2017-12-08 | 中铁建设集团有限公司 | A kind of anchor pole equipment and armature boring construction method |
| CN111305236A (en) * | 2020-02-18 | 2020-06-19 | 中国电建集团华东勘测设计研究院有限公司 | Supporting construction and be used for shutoff sleeve structure that stock cross seam was in milk |
| CN112796808A (en) * | 2020-12-28 | 2021-05-14 | 中国科学院武汉岩土力学研究所 | A combined full-length anchoring prestressed bolt, agitator and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20150816 |
|
| EXPY | Termination of patent right or utility model |