CN207776878U - A kind of underground power house machine hole dividing pier structure - Google Patents
A kind of underground power house machine hole dividing pier structure Download PDFInfo
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- CN207776878U CN207776878U CN201721528450.3U CN201721528450U CN207776878U CN 207776878 U CN207776878 U CN 207776878U CN 201721528450 U CN201721528450 U CN 201721528450U CN 207776878 U CN207776878 U CN 207776878U
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- dividing pier
- rock bolt
- joint bar
- power house
- underground power
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Abstract
The utility model provides a kind of underground power house machine hole dividing pier structure, it is characterised in that the dividing pier is provided with grouting rock bolt and joint bar, and the grouting rock bolt is arranged in the drilling from dividing pier top down, and gap between drilling and grouting rock bolt is filled with Anchor Agent；Grouting rock bolt head is contacted with foot of hole, and the excavation line that dividing pier last layer rock mass is cheated in the drilling in the aperture at the top of dividing pier and less than machine is sunk in tail portion；Joint bar tail portion is exposed at outside dividing pier top surface and bends；Lid loaded concrete is provided at the top of dividing pier.The utility model can ensure that underground power house machine hole dividing pier excavates molding, also, less with muscle amount in engineering, and the supporting performance that dividing pier is cheated to underground power house machine does not reduce, and can prevent high-ground stress from ensureing successive projects quality to dividing pier influence after molding.
Description
Technical field
The utility model discloses a kind of underground power house machines to cheat dividing pier structure, can be in high-ground stress or unfavorable geologic structure
Face effect is lower to excavate molding.
Background technology
Reserving machine hole dividing pier can constrain high side wall deformation between underground power house unit, improve Underground Powerhouse and stablize,
Concreting amount is reduced, but under high-ground stress or the effect of unfavorable geology structural plane, underground power house machine cheats dividing pier and excavates molding
It is more difficult, it is unfavorable to underground power house adjoining rock stability.
Utility model content
The technical problems to be solved in the utility model is：There is provided in view of the above problems a kind of underground power house machine hole every
Pier structure can ensure that underground power house machine hole dividing pier excavates molding.For this purpose, the used following technical scheme of the utility model：
A kind of underground power house machine hole dividing pier structure, it is characterised in that the dividing pier is provided with grouting rock bolt and joint bar, described
Grouting rock bolt is arranged in the drilling from dividing pier top down, and gap between drilling and grouting rock bolt is filled with Anchor Agent；Mortar anchor
Club head is contacted with foot of hole, and tail portion is sunk in the drilling in the aperture at the top of dividing pier and cheats dividing pier last layer less than machine
The excavation line of rock mass；
Joint bar tail portion is exposed at outside dividing pier top surface and bends；
Lid loaded concrete is provided at the top of dividing pier.
Further, the length of the grouting rock bolt is less than the length of joint bar, and diameter is less than the diameter of joint bar.
Further, the half or so of former design joint bar is adjusted to grouting rock bolt, and another part is joint bar；Grouting rock bolt and
Arranged for interval that both joint bars are quincunx.
Further, arrangement of reinforcement in lid loaded concrete, arrangement of reinforcement use latticed arrangement.
Further, dividing pier implements downwards bonded prestress anchor cable from lid loaded concrete.
Due to using the technical solution of the utility model, the utility model that underground power house machine hole dividing pier can be ensured on highland
The stress or effect of unfavorable geology structural plane is lower excavates molding, also, less with muscle amount in engineering, and to underground power house machine hole every
The supporting performance of pier does not reduce, and high-ground stress can be prevented on dividing pier influence after molding, ensures successive projects quality.
Description of the drawings
Fig. 1 is the overall structure floor plan of the utility model.
Fig. 2 is the overall structure profilograph of the utility model.
Specific implementation mode
With reference to attached drawing.A kind of guarantee underground power house machine hole dividing pier of the utility model excavates molding strengthening supporting method,
Including dividing pier 1 original in machine hole is designed joint bar32, L=6m is adjusted to half grouting rock bolt 2（28, L=4.5m）And half joint bar 3（32, L=6m）, joint bar and anchor pole be evenly distributed, and the two is preferable with quincunx arranged for interval.
The grouting rock bolt 2 need to cheat 1 last layer rock mass of dividing pier in machine（Floor height h）Implement to complete before excavating, implementation is
Using drill hole of drilling machine, grouting rock bolt 2 is inserted into drilling by hole depth h+4.5m, and 2 head of grouting rock bolt is contacted with foot of hole, and
Gap between drilling and grouting rock bolt is filled with high-strength Anchor Agent.2 tail portion of grouting rock bolt is less than excavation line L so that described upper one
After layer rock excavation, the tail portion of the grouting rock bolt is sunk in the drilling in the aperture at the top of dividing pier.
The joint bar 3 machine cheat 1 last layer rock excavation of dividing pier after the completion of implement, joint bar 3 and grouting rock bolt 2 it is quincunx between
Every arrangement, 3 exposed design excavation line 1m of joint bar bends 0.6m.
After the completion of the joint bar 3 is implemented, 50cm thickness lids loaded concrete 4, lid loaded concrete 4 are poured in machine hole 1 top surface of dividing pier
Interior to carry out upper layer arrangement of reinforcement, arrangement of reinforcement uses latticed arrangement, arrangement of reinforcement parameter to recommend to use25 200mm × 200mm, Neng Goujin
One step is from practical upper bound, it is ensured that the stability of dividing pier 1.
After the lid loaded concrete 4 pours completion and reaches age requirement, implement bonded prestress anchor cable 5, anchor cable ton
Position, length, quantity and arrangement spacing are determined according to field condition.
The above structure is applied in the construction in Southwestern China ultra-large type power station, in high-ground stress and unfavorable geologic structure
The excavation molding of underground power house machine hole dividing pier is ensured under the effect of face, and maintains to stablize before the construction of later stage structural concrete.
The foregoing is merely the structure features of specific embodiment of the utility model, but the utility model to be not limited to
This, any those skilled in the art in the field of the utility model, made by changes or modifications all cover it is new in this practicality
Among the protection domain of type.
Claims (4)
1. a kind of underground power house machine cheats dividing pier structure, it is characterised in that the dividing pier is provided with grouting rock bolt and joint bar, the sand
Slurry anchor pole is arranged in the drilling from dividing pier top down, and gap between drilling and grouting rock bolt is filled with Anchor Agent；Grouting rock bolt
Head is contacted with foot of hole, and tail portion is sunk in the drilling in the aperture at the top of dividing pier and less than dividing pier last layer rock mass
Excavation line；
Joint bar tail portion is exposed at outside dividing pier top surface and bends；
Lid loaded concrete is provided at the top of dividing pier.
2. a kind of underground power house machine as described in claim 1 cheats dividing pier structure, it is characterised in that the length of the grouting rock bolt
Less than the length of joint bar, diameter is less than the diameter of joint bar.
3. a kind of underground power house machine as described in claim 1 cheats dividing pier structure, it is characterised in that the half of original design joint bar is left
The right side is adjusted to grouting rock bolt, and another part is joint bar；Arranged for interval that both grouting rock bolt and joint bar are quincunx.
4. a kind of underground power house machine as described in claim 1 cheats dividing pier structure, it is characterised in that dividing pier from lid loaded concrete to
Lower implementation bonded prestress anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721528450.3U CN207776878U (en) | 2017-11-15 | 2017-11-15 | A kind of underground power house machine hole dividing pier structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721528450.3U CN207776878U (en) | 2017-11-15 | 2017-11-15 | A kind of underground power house machine hole dividing pier structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207776878U true CN207776878U (en) | 2018-08-28 |
Family
ID=63233322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721528450.3U Active CN207776878U (en) | 2017-11-15 | 2017-11-15 | A kind of underground power house machine hole dividing pier structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207776878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905805A (en) * | 2017-11-15 | 2018-04-13 | 中国电建集团华东勘测设计研究院有限公司 | One kind ensures that underground power house machine hole dividing pier excavates molding strengthening supporting method and underground power house machine hole dividing pier structure |
-
2017
- 2017-11-15 CN CN201721528450.3U patent/CN207776878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905805A (en) * | 2017-11-15 | 2018-04-13 | 中国电建集团华东勘测设计研究院有限公司 | One kind ensures that underground power house machine hole dividing pier excavates molding strengthening supporting method and underground power house machine hole dividing pier structure |
| CN107905805B (en) * | 2017-11-15 | 2024-04-26 | 中国电建集团华东勘测设计研究院有限公司 | Reinforced supporting method for guaranteeing excavation molding of machine pit partition piers of underground powerhouse and machine pit partition pier structure of underground powerhouse |
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