CN211900659U - Shallow-buried large-span underground cavern excavation supporting arrangement structure - Google Patents
Shallow-buried large-span underground cavern excavation supporting arrangement structure Download PDFInfo
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- CN211900659U CN211900659U CN202020280355.1U CN202020280355U CN211900659U CN 211900659 U CN211900659 U CN 211900659U CN 202020280355 U CN202020280355 U CN 202020280355U CN 211900659 U CN211900659 U CN 211900659U
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Abstract
The utility model relates to a shallowly bury large-span underground cavern excavation supporting arrangement structure. The utility model aims at providing a simple structure, construction convenience, safety and stability's shallow large-span underground cavern excavation supporting arrangement structure that buries. The technical scheme of the utility model is that: the utility model provides a shallow large-span underground cavity excavation supporting arrangement structure that buries which characterized in that: a plurality of anchoring holes arranged in parallel with the axis of the underground cavern are arranged above the underground cavern, and a plurality of full-length bonding type opposite-penetrating prestressed anchor cables are arranged between the anchoring holes and the underground cavern. The utility model is suitable for a shallow large-span underground cavern engineering that buries of rock matter.
Description
Technical Field
The utility model relates to a shallowly bury large-span underground cavern excavation supporting arrangement structure is applicable to the shallowly underground cavern engineering that buries large-span of rock matter.
Background
With the continuous development and utilization of underground space, shallow-buried large-span underground caverns are gradually adopted in the civil and military fields in recent years, and due to the fact that the underground caverns are large in span, shallow in buried depth and relatively complex in geological conditions of some projects, the safety and stability of a cavern excavation supporting structure are of great importance.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: to the problem that above-mentioned exists, provide a shallow large-span underground cavern excavation supporting arrangement structure that buries of simple structure, construction convenience, safety and stability.
The utility model adopts the technical proposal that: the utility model provides a shallow large-span underground cavity excavation supporting arrangement structure that buries which characterized in that: a plurality of anchoring holes arranged in parallel with the axis of the underground cavern are arranged above the underground cavern, and a plurality of full-length bonding type opposite-penetrating prestressed anchor cables are arranged between the anchoring holes and the underground cavern.
And a plurality of full-length bonding type opposite-penetrating prestressed anchor cables are arranged between the excavation side slope and the side slope underpass of the opening of the underground cavern and the underground cavern.
The anchoring hole is arranged above the underground cavern within the range of 20-25 m.
And the underground cavern is internally provided with suspended net sprayed concrete, anchor rods and a concrete lining structure.
And the excavation slope at the periphery of the opening of the underground cavern is provided with an opening reinforcing prestressed anchor cable.
The utility model has the advantages that: the utility model discloses arranged the anchor hole above the underground cavern, can carry out geological conditions reconnaissance in advance, groundwater pump drainage in advance to underground cavern top through the anchor hole, bury check out test set underground in advance.
The utility model discloses well excavation side slope and anchor hole are interior to be arranged with full length bonding type to wearing prestressed anchorage cable, can encircle the country rock to underground cavern roof and anchor, also can utilize the anchor rope pore pair main cavern roof to encircle the country rock and carry out grout in advance and consolidate.
The utility model discloses simple structure, construction convenience, cost are lower, can effectively guarantee the safety and stability of main grotto country rock.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is a sectional view a-a of fig. 1.
Detailed Description
As shown in fig. 1 and fig. 2, in the embodiment of the excavation supporting arrangement structure for the shallow-buried large-span underground cavern, 3 anchoring holes 2 arranged in parallel to the axis of the underground cavern are arranged in a range of 20-25 m above the underground cavern 1, and the 3 anchoring holes 2 are located at the same elevation position.
In the embodiment, a plurality of full-length bonding type opposite-penetrating prestressed anchor cables 6 are uniformly distributed between the anchoring hole 2 and the underground cavern 1, and between the excavation slope 3 above the opening of the underground cavern 1 and the side slope packway 4 and the underground cavern, so as to anchor the top arch surrounding rock of the underground cavern 1.
A net-hanging sprayed concrete and anchor rod 7 and a concrete lining structure 8 are arranged in the underground cavern 1, and a cavern reinforcing prestressed anchor cable 5 is arranged on an excavation slope 3 at the periphery of a cavern opening.
The concrete construction steps of the embodiment are as follows:
in the embodiment, the side slope 3 is excavated, and the reinforced prestressed anchor cable 5 and the full-length bonding type opposite-penetrating prestressed anchor cable 6 are implemented on the side slope 3 and the side slope berm 4 after the side slope 3 is excavated; then, excavating the anchoring hole 2, and after the excavation of the anchoring hole 2 is finished, implementing the full-length bonding type opposite-penetrating prestressed anchor cable 6 between the anchoring hole 2 and the underground cavern 1; after all the steps are completed, the underground cavern 1 is excavated, and concrete and anchor rods 7 and a concrete lining structure 8 are sprayed in a net hanging mode along with the excavation of the underground cavern 1.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a shallow large-span underground cavity excavation supporting arrangement structure that buries which characterized in that: a plurality of anchoring holes (2) which are arranged in parallel to the axis of the underground cavern are arranged above the underground cavern (1), and a plurality of full-length bonding type opposite-penetrating prestressed anchor cables (6) are arranged between the anchoring holes (2) and the underground cavern (1).
2. The shallow-buried large-span underground cavern excavation supporting arrangement structure of claim 1, wherein: a plurality of full-length bonding type opposite-penetrating prestressed anchor cables (6) are arranged between an excavation side slope (3) and a side slope underpass (4) of a hole of the underground cavern (1) and the underground cavern.
3. The shallow-buried large-span underground cavern excavation supporting arrangement structure of claim 1 or 2, characterized in that: the anchoring hole (2) is arranged in the range of 20-25 m above the underground cavern (1).
4. The shallow-buried large-span underground cavern excavation supporting arrangement structure of claim 1, wherein: and the underground cavern (1) is internally provided with net-hanging sprayed concrete, anchor rods (7) and a concrete lining structure (8).
5. The shallow-buried large-span underground cavern excavation supporting arrangement structure of claim 1, wherein: and an opening reinforcing pre-stressed anchor cable (5) is arranged on the excavation side slope (3) at the periphery of the opening of the underground chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280355.1U CN211900659U (en) | 2020-03-09 | 2020-03-09 | Shallow-buried large-span underground cavern excavation supporting arrangement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280355.1U CN211900659U (en) | 2020-03-09 | 2020-03-09 | Shallow-buried large-span underground cavern excavation supporting arrangement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211900659U true CN211900659U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020280355.1U Active CN211900659U (en) | 2020-03-09 | 2020-03-09 | Shallow-buried large-span underground cavern excavation supporting arrangement structure |
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| CN (1) | CN211900659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492138A (en) * | 2022-11-10 | 2022-12-20 | 中国电建集团贵阳勘测设计研究院有限公司 | High-steep rocky slope reinforcing method with ultra-long buried depth deterministic sliding surface |
-
2020
- 2020-03-09 CN CN202020280355.1U patent/CN211900659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492138A (en) * | 2022-11-10 | 2022-12-20 | 中国电建集团贵阳勘测设计研究院有限公司 | High-steep rocky slope reinforcing method with ultra-long buried depth deterministic sliding surface |
| CN115492138B (en) * | 2022-11-10 | 2024-02-06 | 中国电建集团贵阳勘测设计研究院有限公司 | High-steep rock slope reinforcement method with ultra-long buried depth deterministic sliding surface |
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