CN104653209A - Multistage resistance-increasing anchor rod and construction method - Google Patents
Multistage resistance-increasing anchor rod and construction method Download PDFInfo
- Publication number
- CN104653209A CN104653209A CN201510036867.7A CN201510036867A CN104653209A CN 104653209 A CN104653209 A CN 104653209A CN 201510036867 A CN201510036867 A CN 201510036867A CN 104653209 A CN104653209 A CN 104653209A
- Authority
- CN
- China
- Prior art keywords
- rod
- enlarging device
- self
- anchor pole
- multistage
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 10
- 230000001965 increasing effect Effects 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 5
- 239000002689 soil Substances 0.000 abstract description 5
- 230000035515 penetration Effects 0.000 abstract 1
- 238000004873 anchoring Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- 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
- E21D21/0093—Accessories
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)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a multistage resistance-increasing anchor rod and a construction method. The multistage resistance-increasing anchor rod comprises a rod body, wherein a rod body check block is fixed at the front part of the rod body; a jacking rod is connected to the rear part of the rod body; a plurality of self-expandable devices with hollow structures sleeve a rod body between the rod body check block and the jacking rod; the jacking rod can push the self-expandable devices to move; the front part of each self-expandable device is of a conical structure; a hollow connecting rod is arranged at the middle of each self-expandable device; a plurality of wedge sheets are arranged at the rear part of each self-expandable device along the circumferential direction of the self-expandable device; the wedge plates of the adjacent self-expandable devices are connected with the conical structures; a fixing device is arranged at the tail of the rod body, has removability, can be used for changing resistance increasing series and facilitates adopting multiple resistance increasing series settings for engineering practice; the stress is simply applied; the rear ends of the self-expandable devices are expanded by screwing bolts; the wedge plates in a shape like a Chinese character mi at the rear ends of the self-expandable devices adopt the design that the front parts are thick and the rear parts are thin, so the penetration of conical ends is facilitated; meanwhile, the stretched wedge plates can be conveniently inserted into surrounding rock or the insides of surrounding soil bodies, so that the frictional resistance between the rod body and the soil bodies is increased.
Description
Technical field
The invention belongs to ground anchorage field, be specifically related to a kind of multistage increasing resistance anchor pole and construction method.
Background technology
Conventional anchor is all make prismatic shapes, and uplift resistance mainly provides by anchoring body and Rock And Soil, and this value is less under normal circumstances, and especially in soft clay area, because geological conditions itself is poor, anchoring effect is also corresponding undesirable.The research core content of anchoring improves in anchor structure and construction technology, to strengthen anchoring effect both at home and abroad at present.But a lot of method strengthening anchoring effect not only complex procedures and also cost higher.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, the multistage increasing resistance anchor pole that a kind of structure is simple, easy and simple to handle, cheap is provided.
For achieving the above object, the present invention adopts following technical proposals:
A kind of multistage increasing resistance anchor pole, comprise the body of rod, described body of rod front portion is fixed with body of rod scotch, described body of rod rear portion is connected with jacking bar, body of rod outer cover between described body of rod scotch and jacking bar is equipped with the multiple from enlarging device of hollow structure, described jacking bar can promote to move from enlarging device, described is cone structure from enlarging device front portion, be hollow connecting rod from the centre of enlarging device, rear portion is along being provided with multiple key from the circumferencial direction of enlarging device, described first is connected with body of rod scotch from the cone structure of enlarging device, last is connected with jacking bar from the key of enlarging device, the adjacent key from enlarging device is connected with cone structure, the afterbody of the described body of rod is provided with fastening devices.
The described body of rod is solid construction, and rear end is provided with screw thread.
Described jacking bar is hollow structure, and jacking bar front end is cone structure, and rear end is provided with jacking base, and centre is hollow connecting rod.
Described fastening devices is rotated by the screw thread of body of rod rear end and the body of rod fixes.
Described key is fitted on the body of rod when being in unexpanded mode from enlarging device, and key is in open configuration when holding out against another from enlarging device from enlarging device for one.
Thick rear end, described key front end is thin, facilitates cone injection.By the promotion of jacking bar and the stop extruding of lever front end body of rod scotch, realize the automatic expansion from enlarging device, fixed the position of jacking bar by fastening devices, realize the body of rod and increase being permanently fixed of resistance state.
The multistage construction method increasing resistance anchor pole, comprises the following steps:
Step 1: adopt anchor pole to set machinery, set common anchor hole, anchor hole diameter is greater than the bolt diameter of unexpanded mode;
Step 2: carry out anchor pole assembling, is nested on the body of rod by multiple from enlarging device, jacking bar order, ensures that body of rod rear end screw thread exposes;
Step 3: the anchor pole combined is stretched into anchor hole inside, body of rod rear end screw thread fixing device for installing, by twisting fastening devices, jacking bar is inwardly advanced along the body of rod, by jacking bar tapered front end and from the tapered forward ends thereof of enlarging device from enlarging device key, make it expansion, complete automatically expansion and increase resistance;
Step 4: anchor hole is filled slurries, completes rockbolt installation.
Apparatus of the present invention are applicable to ground anchorage, can realize the automatic expansion of anchor pole from the design of enlarging device, increase the contact area of anchor pole and rock mass and cement grout, improve its anti-pulling ability.
The invention solves in the past common bolt also slurries and country rock contact area little, a difficult problem for anti-pulling ability, apparatus of the present invention have following beneficial effect:
1) device has dismantled and assembled property, by change from enlarging device hollow connecting rod size and the body of rod nested from enlarging device quantity, change and increase resistance progression, convenient actual for engineering, take multiple increasings to hinder rank setting;
2) stress applies simple, and by the precession of bolt, realize the expansion from enlarging device rear end, operation is simple and feasible, meets request for engineering action;
3) thick rear thin design before the rice font key of enlarging device rear end, facilitates the injection of tapered end, and the key simultaneously opened can insert country rock easily or surrounding soil is inner, increases the frictional resistance of the body of rod and the soil body;
4) each ingredient of device is simple, can realize batch and produce fast, meet batch production, mass production requirement.
Accompanying drawing explanation
Fig. 1 is the multistage structural representation increasing resistance anchor pole of the present invention;
Fig. 2 is the multistage structural representation increasing resistance anchor rod body in Fig. 1;
Fig. 3 is that in Fig. 1, multistage increasing resistance anchor pole two saves the structural representation from enlarging device;
Fig. 4 is the multistage structural representation increasing resistance anchor pole jacking bar in Fig. 1;
In figure, the 1. body of rod; 2. from enlarging device; 3. jacking bar; 4. fixed structure; 5. body of rod scotch; 6. body of rod screw thread; 7. set bolt; 8. from the tapered front end of enlarging device; 9. from the hollow connecting rod of enlarging device; 10. from enlarging device rice font key; The 11. tapered front ends of jacking bar; The hollow connecting rod of 12. jacking bar; 13. jacking bar bases.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, multistage increasing resistance anchor pole, comprises the body of rod 1, and order is nested is arranged on the multiple from enlarging device 2 of the body of rod 1 outside, and jacking bar 3 and fixed structure 4, from enlarging device 2 and jacking bar 3 can in the middle part of the body of rod 1 and rear portion be free to slide.By the promotion of jacking bar 3 and the stop extruding of body of rod scotch 5, realize the automatic expansion from enlarging device 2, fixed the position of jacking bar 3 by fastening devices 4, realize the body of rod and increase being permanently fixed of resistance state.
As shown in Figure 2, the body of rod 1 is solid construction, and front end is provided with body of rod scotch 5, and rear end is provided with screw thread 6.Fixed structure 4, is made up of body of rod screw thread 6 and set bolt 7, applies extrusion stress by twisting set bolt 7 pairs of jacking bars 3.
As shown in Figure 3, be hollow structure from enlarging device 2, front end is tapered structure 8, and there is the rice font key 10 in through cross section rear end, and centre is hollow connecting rod 9, and thick rear end, key 10 front end is thin, facilitates tapered structure 8 injection.
As shown in Figure 4, jacking bar 3 is hollow structure, and front end is tapered structure 11, and there is jacking base 13 rear end, and centre is hollow connecting rod 12, conveniently applies extrusion stress to from enlarging device.
Apply described device and realize the multistage increasing resistance of anchor pole, comprise the following steps:
1) adopt anchor pole to set machinery, set common anchor hole, anchor hole size, can ensure that multistage increasing resistance anchor pole normally enters.
2) carry out anchor pole assembling, be nested on the body of rod 1 by multiple from enlarging device 2, jacking bar 3 order, ensure that body of rod rear end screw thread exposes.
3) anchor pole combined is stretched into anchor hole inside, the body of rod 1 rear end body of rod screw thread 6 installs set bolt 7, by twisting bolt 7, jacking bar 11 is inwardly advanced along the body of rod 1, extrude from enlarging device rice font key 10 by jacking bar tapered front end 11 and from the tapered front end 8 of enlarging device, make it expansion, complete expansion automatically and increase resistance.
4) anchor hole is filled slurries, complete rockbolt installation.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (7)
1. a multistage increasing resistance anchor pole, it is characterized in that, comprise the body of rod, described body of rod front portion is fixed with body of rod scotch, described body of rod rear portion is connected with jacking bar, body of rod outer cover between described body of rod scotch and jacking bar is equipped with the multiple from enlarging device of hollow structure, described jacking bar can promote to move from enlarging device, described is cone structure from enlarging device front portion, be hollow connecting rod from the centre of enlarging device, rear portion is along being provided with multiple key from the circumferencial direction of enlarging device, described first is connected with body of rod scotch from the cone structure of enlarging device, last is connected with jacking bar from the key of enlarging device, the adjacent key from enlarging device is connected with cone structure, the afterbody of the described body of rod is provided with fastening devices.
2. multistage increasing resistance anchor pole as claimed in claim 1, it is characterized in that, the described body of rod is solid construction, and rear end is provided with screw thread.
3. multistage increasing resistance anchor pole as claimed in claim 1, it is characterized in that, described jacking bar is hollow structure, and jacking bar front end is cone structure, and rear end is provided with jacking base, and centre is hollow connecting rod.
4. multistage increasing resistance anchor pole as claimed in claim 1, is characterized in that, described fastening devices to be rotated with the body of rod by the screw thread of body of rod rear end fixes.
5. multistage increasing resistance anchor pole as claimed in claim 1, it is characterized in that, described key is fitted on the body of rod when being in unexpanded mode from enlarging device, and key is in open configuration when holding out against another from enlarging device from enlarging device for one.
6. multistage increasing resistance anchor pole as claimed in claim 1, it is characterized in that, thick rear end, described key front end is thin.
7. the multistage construction method increasing resistance anchor pole, is characterized in that, comprise the following steps:
Step 1: adopt anchor pole to set machinery, set common anchor hole, anchor hole diameter is greater than the bolt diameter of unexpanded mode;
Step 2: carry out anchor pole assembling, is nested on the body of rod by multiple from enlarging device, jacking bar order, ensures that body of rod rear end screw thread exposes;
Step 3: the anchor pole combined is stretched into anchor hole inside, body of rod rear end screw thread fixing device for installing, by twisting fastening devices, jacking bar is inwardly advanced along the body of rod, by jacking bar tapered front end and from the tapered forward ends thereof of enlarging device from enlarging device key, make it expansion, complete automatically expansion and increase resistance;
Step 4: anchor hole is filled slurries, completes rockbolt installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036867.7A CN104653209A (en) | 2015-01-23 | 2015-01-23 | Multistage resistance-increasing anchor rod and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036867.7A CN104653209A (en) | 2015-01-23 | 2015-01-23 | Multistage resistance-increasing anchor rod and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104653209A true CN104653209A (en) | 2015-05-27 |
Family
ID=53244780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510036867.7A Pending CN104653209A (en) | 2015-01-23 | 2015-01-23 | Multistage resistance-increasing anchor rod and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104653209A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155534A (en) * | 2015-08-07 | 2015-12-16 | 兰州理工大学 | Rapidly-assembled recoverable frame anchor rod structure and construction method |
| CN105257328A (en) * | 2015-11-30 | 2016-01-20 | 湖南科技大学 | Segmented anchoring and grouting anchor rod device capable of achieving automatic clamping and anchoring method thereof |
| CN109209458A (en) * | 2018-10-31 | 2019-01-15 | 北京交通大学 | A kind of increasing resistance pressurization anchor pole |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1505795A (en) * | 1975-06-26 | 1978-03-30 | Gd Anker Gebirgsdubel Anker Gm | Expansion rock bolts |
| US4160615A (en) * | 1978-03-23 | 1979-07-10 | The International Nickel Company, Inc. | Cable rock anchor |
| CN201129183Y (en) * | 2007-12-29 | 2008-10-08 | 中铁隧道集团有限公司 | Tubule subsection repeat grouting apparatus |
| CN102644470A (en) * | 2012-04-18 | 2012-08-22 | 李治中 | General energy-saving quick anchoring method and general energy-saving quick anchor rod |
| CN202596759U (en) * | 2012-06-07 | 2012-12-12 | 中铁西南科学研究院有限公司 | Multi-stage subsection grouting-free self-swelling tight type anchoring rock bolt |
| CN202882965U (en) * | 2012-10-24 | 2013-04-17 | 西安科技大学 | Non-resin multi-anchor rock bolt capable of stopping rotation reversely |
| CN104061009A (en) * | 2014-05-16 | 2014-09-24 | 山东科技大学 | Multi-section expansion yielding prestressed grouting anchor cable and application method thereof |
| CN204492854U (en) * | 2015-01-23 | 2015-07-22 | 山东大学 | A kind of multistage increasing resistance anchor pole |
-
2015
- 2015-01-23 CN CN201510036867.7A patent/CN104653209A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1505795A (en) * | 1975-06-26 | 1978-03-30 | Gd Anker Gebirgsdubel Anker Gm | Expansion rock bolts |
| US4160615A (en) * | 1978-03-23 | 1979-07-10 | The International Nickel Company, Inc. | Cable rock anchor |
| CN201129183Y (en) * | 2007-12-29 | 2008-10-08 | 中铁隧道集团有限公司 | Tubule subsection repeat grouting apparatus |
| CN102644470A (en) * | 2012-04-18 | 2012-08-22 | 李治中 | General energy-saving quick anchoring method and general energy-saving quick anchor rod |
| CN202596759U (en) * | 2012-06-07 | 2012-12-12 | 中铁西南科学研究院有限公司 | Multi-stage subsection grouting-free self-swelling tight type anchoring rock bolt |
| CN202882965U (en) * | 2012-10-24 | 2013-04-17 | 西安科技大学 | Non-resin multi-anchor rock bolt capable of stopping rotation reversely |
| CN104061009A (en) * | 2014-05-16 | 2014-09-24 | 山东科技大学 | Multi-section expansion yielding prestressed grouting anchor cable and application method thereof |
| CN204492854U (en) * | 2015-01-23 | 2015-07-22 | 山东大学 | A kind of multistage increasing resistance anchor pole |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155534A (en) * | 2015-08-07 | 2015-12-16 | 兰州理工大学 | Rapidly-assembled recoverable frame anchor rod structure and construction method |
| CN105257328A (en) * | 2015-11-30 | 2016-01-20 | 湖南科技大学 | Segmented anchoring and grouting anchor rod device capable of achieving automatic clamping and anchoring method thereof |
| CN105257328B (en) * | 2015-11-30 | 2017-07-28 | 湖南科技大学 | A kind of the segmentation archoring slip casting archoring-balt device and its anchoring process of energy automatic clamping |
| CN109209458A (en) * | 2018-10-31 | 2019-01-15 | 北京交通大学 | A kind of increasing resistance pressurization anchor pole |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |