CN206052643U - A kind of deep hole grouting rock bolt hook type centering supporting structure - Google Patents
A kind of deep hole grouting rock bolt hook type centering supporting structure Download PDFInfo
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- CN206052643U CN206052643U CN201621009900.3U CN201621009900U CN206052643U CN 206052643 U CN206052643 U CN 206052643U CN 201621009900 U CN201621009900 U CN 201621009900U CN 206052643 U CN206052643 U CN 206052643U
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- anchor pole
- medium
- height trestle
- hook type
- rock bolt
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Abstract
The utility model discloses a kind of deep hole grouting rock bolt hook type centering supporting structure, the structure is in bolthole (2) that anchor pole (3) centering is fixed in side slope (1), it be included in arrange on the outer wall of anchor pole (3) to medium-height trestle (5), this pair of medium-height trestle (5) is that with hook type support made by reinforcing bar, this pair of medium-height trestle (5) is welded to connect on the outer wall of anchor pole (3) and forms outer support structure.This utility model is by welding a kind of arc support of support anchors on anchor pole, reach anchor pole purpose placed in the middle in hole, it is effectively prevented the flexural deformation under Gravitative Loads of long anchor pole and is close to petrosal foramen side wall, by arranging to medium-height trestle, anchor pole can be made straight in petrosal foramen, mortar can uniformly wrap up anchor pole, improve the stress condition of anchor pole, improve anchoring effect.This utility model structural shape is simple, easy construction, strong applicability, with preferable economic advantages.
Description
Technical field
This utility model is related to Hydraulic and Hydro-Power Engineering technical field, more particularly, to a kind of deep hole grouting rock bolt hook type pair
Medium-height trestle structure.
Background technology
In the engineering slope stabilization and reinforcement of water conservancy and hydropower station, grouting rock bolt is a kind of more universal support pattern, general to unite
Grouting rock bolt installs anchor pole (3) in hole (2) as shown in figure 1, its technical scheme is mainly drills (2) in side slope (1),
Mortar is filled between hole (2) and anchor pole (3) in cavity, mortar is the power transmission medium between anchor pole and side slope.The stress of anchor pole is
Mortar is delivered load to by side slope, mortar passes to anchor pole, after rockbolt stress, resistance is passed to into mortar again, mortar is again
Side slope is passed to, and the purpose for reaching bolt anchorage side slope is circulated by this, so, the stressed effect and mortar chymoplasm of anchor pole
Can amount, be to ensure the key that play one's part to the full of anchor pole.When rock-bolt length is longer, under the Gravitative Loads of anchor pole, anchor pole
Curved state (as shown in Figure 1), the anchor pole back segment body of rod can be contacted with hole wall, and now, mortar is difficult to fully wrap up anchor pole, anchor
Bar stress is poor, reduces significantly the supporting effect of anchor pole, it is also possible to cause slope instability.
Utility model content
The purpose of this utility model be in order to solve rock-bolt length it is longer when as Gravitative Loads cause anchor pole in bolthole
In curved state cause the anchor pole back segment body of rod to contact with hole wall, the problem for making mortar be difficult to fully wrap up anchor pole, there is provided
Plant deep hole grouting rock bolt hook type centering supporting structure.
This utility model is achieved by following technical solution：
A kind of deep hole grouting rock bolt hook type centering supporting structure, the structure is for anchor pole centering is fixed in side slope
In bolthole, it be included in arrange on the outer wall of anchor pole to medium-height trestle, this pair of medium-height trestle is with hook type made by reinforcing bar
Frame, this pair of medium-height trestle are welded to connect on the outer wall of anchor pole and form outer support structure.
On anchor pole every 2～4m one group of spacing interval setting to medium-height trestle.
One group is constituted to medium-height trestle per three on anchor pole, three to being collar to laying with anchor pole between medium-height trestle
Put, in same group, any two is 120 ° to the spacing angle of medium-height trestle.
The arc section to medium-height trestle by long transverse lever and hyphen bar and therebetween is constituted；Wherein long transverse lever is by weldering
Socket part is fixedly connected on anchor pole, and hyphen bar and arc section are flared outwardly to create outer support structure.
The beneficial effects of the utility model：This utility model is by welding a kind of arc of support anchors on anchor pole
Frame, reaches anchor pole purpose placed in the middle in hole, is effectively prevented the flexural deformation under Gravitative Loads of long anchor pole and is close to petrosal foramen side
Wall, by arranging to medium-height trestle, can make anchor pole straight in petrosal foramen, and mortar can uniformly wrap up anchor pole, improve anchor pole
Stress condition, improves anchoring effect.This utility model structural shape is simple, easy construction, strong applicability, with preferable Jing
Ji advantage.
Description of the drawings
Fig. 1 is the existing deep hole grouting rock bolt schematic diagram without centering structure；
Fig. 2 is deep hole grouting rock bolt schematic diagram of the setting of the present utility model to medium-height trestle；
Fig. 3 is the part A drawing in Fig. 2；
Fig. 4 is the a-a sectional views in Fig. 3；
Fig. 5 is of the present utility model to medium-height trestle drawing.
Description of reference numerals：1- side slopes, 2- boltholes, 3- anchor poles, 4- mortars, 5- is to medium-height trestle, 6- weld parts, 7- hyphens
Bar, 8- arc sections, 9- long transverse levers.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Referring initially to Fig. 1, Fig. 1 illustrates the existing deep hole grouting rock bolt schematic diagram without centering structure；It can be seen that
As anchor pole 3 is not provided with centering structure, after the bolthole 2 in the insertion side slope 1 of anchor pole 3, due to effect of weight, after anchor pole 3
Half section can nature to tenesmus, cause the bending of anchor pole 2, make mortar 4 be difficult to completely envelope anchor pole 2, so as to dotted line in FIG
The B areas of frame scope form the poor area of rockbolt stress.
In view of the foregoing, this utility model has carried out such improvement, as shown in Fig. 2 in bolthole 2, along anchor
The trend of bar 3, just arranges one group to medium-height trestle 5 at interval of a segment distance, by the outer support structure to medium-height trestle 5, makes anchor pole 3 exist
It is fixed in bolthole 2, then passes through mortar 4 again to anchor pole 3 and medium-height trestle 5 is coated, reliably receive so as to be formed
Power structure.
As shown in figure 3, it is of the present utility model it is this medium-height trestle 5 is welded on anchor pole 3 by weld part 6, and formed
Outer support structure.As shown in figure 4, this pair of medium-height trestle 5 constitutes one group per three, three equal in ring by axle of anchor pole 3 to medium-height trestle 5
Cloth, interval angles are 120 ° two-by-two.The maximum outside diameter of its outer support structure is slightly less than the internal diameter of bolthole 2, then will by mortar 4
This pair of medium-height trestle 5 and anchor pole 3 fill closely knit together.
As shown in figure 5, the arc section 8 to medium-height trestle 5 by long transverse lever 9 and hyphen bar 7 and therebetween is constituted；It is wherein long
Cross bar 9 is fixedly connected on anchor pole 3 by weld part 6, and hyphen bar 7 and arc section 8 are flared outwardly to create outer support structure.
This utility model is implemented：
As shown in Fig. 2 first, the drilling in side slope 1 forms bolthole 2, is made to medium-height trestle using bar bending welding
5, medium-height trestle 5 will be welded on anchor pole 3 by weld part 6 and be squeezed in bolthole 2, then perfusion mortar 4 is closed.
Petrosal foramen is inserted smoothly for the ease of anchor pole 3, to the construction of medium-height trestle 5 it should be noted that problems with：1. to medium-height trestle 5 and anchor
The body of rod radius that bar 3 is formed after welding need to be less than 2 radius of bolthole.2. it is to reduce to the frictional force between medium-height trestle 5 and crag, right
Medium-height trestle 5 should be in support structure outside circular arc, to the hyphen bar 7 on medium-height trestle 5 and unsuitable long, the 5cm～10cm of 9 length of long transverse lever
It is long, 2 radius of bolthole should be less than to the bending arc radius of arc section 8 of medium-height trestle 5.When 3. welding, to 5 circular arc of medium-height trestle
Direction should be consistent with 3 direction of insertion of anchor pole, can so prevent medium-height trestle 5 is blocked by crag.4. medium-height trestle 5 is preferably used and is easy to curved
I grade of bent reinforcement fabrication, bar diameter 8mm or so are advisable, its stiffness energy support anchors weight.
The patterns such as dowel beam of the anchor pole of the present utility model 3 comprising 3 or many compositions of anchor pole 3 of single anchor rod.
Certainly, it is more than concrete application example of the present utility model, this utility model also has other embodiments, all
The technical scheme formed using equivalent or equivalent transformation, is all fallen within the protection domain required by this utility model.
Claims (4)
1. a kind of deep hole grouting rock bolt hook type centering supporting structure, the structure is for being fixed on side slope (1) by anchor pole (3) centering
On bolthole (2) in, it is characterised in that：It is included in arrange on the outer wall of anchor pole (3) to medium-height trestle (5), the centering
Frame (5) is that with hook type support made by reinforcing bar, this pair of medium-height trestle (5) is welded to connect on the outer wall of anchor pole (3) and forms outer
Support structure.
2. deep hole grouting rock bolt hook type centering supporting structure according to claim 1, it is characterised in that：In anchor pole (3)
On every 2～4m one group of spacing interval setting to medium-height trestle (5).
3. deep hole grouting rock bolt hook type centering supporting structure according to claim 2, it is characterised in that：In anchor pole (3)
On one group is constituted to medium-height trestle (5) per three, three to being collar to being uniformly arranged with anchor pole (3) between medium-height trestle (5), it is same
In group, any two is 120 ° to the spacing angle of medium-height trestle (5).
4. deep hole grouting rock bolt hook type centering supporting structure according to claim 1, it is characterised in that：The centering
Arc section (8) of the frame (5) by long transverse lever (9) and hyphen bar (7) and therebetween is constituted；Wherein long transverse lever (9) is by welding
Portion (6) is fixedly connected on anchor pole (3), and hyphen bar (7) and arc section (8) are flared outwardly to create outer support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621009900.3U CN206052643U (en) | 2016-08-31 | 2016-08-31 | A kind of deep hole grouting rock bolt hook type centering supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621009900.3U CN206052643U (en) | 2016-08-31 | 2016-08-31 | A kind of deep hole grouting rock bolt hook type centering supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206052643U true CN206052643U (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621009900.3U Active CN206052643U (en) | 2016-08-31 | 2016-08-31 | A kind of deep hole grouting rock bolt hook type centering supporting structure |
Country Status (1)
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| CN (1) | CN206052643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716217A (en) * | 2018-08-29 | 2018-10-30 | 兰州大学 | A kind of hole grouting rock bolt centering of falling three-pawl type supporting structure |
-
2016
- 2016-08-31 CN CN201621009900.3U patent/CN206052643U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716217A (en) * | 2018-08-29 | 2018-10-30 | 兰州大学 | A kind of hole grouting rock bolt centering of falling three-pawl type supporting structure |
| CN108716217B (en) * | 2018-08-29 | 2024-02-20 | 兰州大学 | Inverted three-jaw centering support structure for hole mortar anchor rod |
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