CN220539635U - Novel protection structure for tunnel roof upward slope collapse treatment - Google Patents
Novel protection structure for tunnel roof upward slope collapse treatment Download PDFInfo
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- CN220539635U CN220539635U CN202321920946.0U CN202321920946U CN220539635U CN 220539635 U CN220539635 U CN 220539635U CN 202321920946 U CN202321920946 U CN 202321920946U CN 220539635 U CN220539635 U CN 220539635U
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- tunnel
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- upward slope
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- 238000004873 anchoring Methods 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 201000010099 disease Diseases 0.000 abstract description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 21
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The utility model discloses a novel protection structure for treating collapse of a tunnel roof and a slope, which comprises a tunnel entrance structure and an existing anchoring structure arranged on the periphery of the tunnel entrance structure; the method is characterized in that a supplementary anchoring structure and a filling structure are arranged in a collapse area of the existing anchoring structure, and a frame-type protection structure capable of enclosing a tunnel entering structure is arranged below the supplementary anchoring structure and the filling structure. According to the utility model, by arranging the supplementary anchoring structure and the frame type protective structure, the hole top upward slope can be restored to the state before the slope body is collapsed on the premise of not increasing the hole top upward slope excavation, so that the occurrence of high steep slopes is effectively avoided, and the method is beneficial to the treatment of upward slope collapse diseases and the follow-up upward slope operation maintenance; the frame type protective structure can effectively bear the weight of backfilled concrete at the upper part, so that adverse effects of upward slope instability on a tunnel structure are reduced to the greatest extent, and the frame type protective structure is good in structural stability, high in strength and good in safety.
Description
Technical Field
The utility model relates to a novel protection structure for treating tunnel roof downhill collapse, and belongs to the technical field of tunnel construction.
Background
In the tunnel portal construction process, the tunnel roof is inclined downwards left and right under construction disturbance, so that local instability collapse can occur, and irregular concave gaps can be formed in the whole inclined slope protection. At this time, it is conventional practice to perform a large-scale excavation correction on the inverted arch slope surface so that the slope surface is relatively smooth again, and the construction slope body protection structure is reproduced. However, the construction method has extremely large excavation amount on the upward slope, and particularly under the condition of relatively steep in-situ topography, the tunnel hole is often caused to be ejected out of the upward slope which is higher and steeper than before the collapse, and potential safety hazards are brought to subsequent construction and even later operation.
In order to effectively cope with the construction of the tunnel roof after the collapse of the upward slope and avoid the occurrence of high and steep slopes, the research of a novel protection structure for the collapse of the tunnel roof has great practical significance.
Disclosure of Invention
In view of the above, the utility model aims to provide a novel protection structure for treating the collapse of a tunnel roof uphill slope, which can overcome the defects of the prior art.
The utility model aims at realizing the following technical scheme:
a novel protection structure for treating the collapse of a tunnel roof and a slope comprises a tunnel entrance structure and an existing anchoring structure arranged on the periphery of the tunnel entrance structure; the method is characterized in that a supplementary anchoring structure and a filling structure are arranged in a collapse area of the existing anchoring structure, and a frame-type protection structure capable of enclosing a tunnel entering structure is arranged below the supplementary anchoring structure and the filling structure.
The supplemental anchor structures are staggered with the existing anchor structures.
The supplementary anchoring structure comprises a primary stable structure and a reinforcing structure, wherein the primary stable structure is arranged around the periphery of the collapse area, the reinforcing structure is arranged in the middle of the primary stable structure, and the supporting parameters of the reinforcing structure are stronger than those of the primary stable structure.
The frame type protection structure comprises supporting piles symmetrically arranged on two sides of the tunnel entering structure, and bearing platforms are arranged at the tops of the supporting piles.
The supporting piles are arranged on two sides of the tunnel entering structure in a plurality of rows.
The support pile is a rotary digging precast pile.
The bearing platform is an L-shaped prefabricated assembly bearing platform.
The filling structure is arranged in an L-shaped groove of the L-shaped prefabricated assembly bearing platform.
The filling structure is light concrete.
Compared with the prior art, the novel protection structure for the tunnel roof uphill collapse treatment comprises a tunnel entering structure and an existing anchoring structure arranged on the periphery of the tunnel entering structure; the method is characterized in that a supplementary anchoring structure and a filling structure are arranged in a collapse area of the existing anchoring structure, and a frame-type protection structure capable of enclosing a tunnel entering structure is arranged below the supplementary anchoring structure and the filling structure. The support piles are arranged on two sides of a tunnel, the L-shaped prefabricated assembly bearing platform is arranged at the tops of the support piles, and light concrete is poured at the tops of the L-shaped prefabricated assembly bearing platform to fill the gap of the local collapse of the slope body, and the treatment effect of restoring the unsteady upward slope to the original appearance can be achieved by combining the supplementary anchoring structure, so that the method is particularly suitable for tunnel portal design under steep slope topography.
The beneficial effects of the utility model are as follows:
according to the utility model, by arranging the supplementary anchoring structure and the frame type protective structure, the hole top upward slope can be restored to the state before the slope body is collapsed on the premise of not increasing the hole top upward slope excavation, so that the occurrence of high steep slopes is effectively avoided, and the method is beneficial to the treatment of upward slope collapse diseases and the follow-up upward slope operation maintenance; the frame type protective structure can effectively bear the weight of backfilled concrete at the upper part, so that adverse effects of upward slope instability on a tunnel structure are reduced to the greatest extent, and the frame type protective structure is good in structural stability, high in strength and good in safety. The frame type protection structure is composed of the rotary-digging precast pile and the L-shaped precast spliced bearing platform, the construction speed is high, the construction time of construction workers below a slope body can be effectively reduced, and the construction risk of the tunnel roof on the slope collapse is further reduced.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the front structure of the present utility model;
FIG. 2 is a schematic side view of the present utility model;
fig. 3 is a schematic side view of the second embodiment of the present utility model.
Detailed Description
Hereinafter, preferred embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
In the case of example 1,
1-3, a novel protection structure for treating the collapse of a tunnel roof uphill slope is unchanged from the existing tunnel portal structure, and comprises a tunnel entrance structure 1 and an existing anchoring structure 2 arranged on the periphery of the tunnel entrance structure 1; the collapse area of the existing anchoring structure 2 is provided with a supplementary anchoring structure 3 and a filling structure 6, and a frame type protection structure capable of enclosing the tunnel entering structure 1 is arranged below the supplementary anchoring structure 3 and the filling structure 6.
The supplementary anchor structure 3 can be used as a reinforcing measure for the non-slumped part after the collapse of the slope body, and is staggered with the existing anchor structure 2. Preferably, the supplementary anchoring structure 3 comprises a primary stable structure 3.1 surrounding the periphery of the collapsed region and a reinforcing structure 3.2 arranged in the middle of the primary stable structure 3.1, and the support parameters of the reinforcing structure 3.2 are stronger than those of the primary stable structure 3.1. The support parameters include arrangement density, anchor rod length, etc.
The supplementary anchoring structure 3 can be an anchor rod, a grouting pipe, an anchor rope and the like.
The frame-type protection structure comprises supporting piles 4 symmetrically arranged at two sides of the tunnel entering structure 1, and bearing platforms 5 are arranged at the tops of the supporting piles 4.
Connecting steel bars are reserved at the top end of the supporting pile 4, a groove matched with the pipe diameter of the supporting pile 4 is reserved at the bottom of the bearing platform 5, and an opening matched with the position of the connecting steel bars at the top end of the supporting pile 4 is arranged in the groove, so that the bearing platform 5 is quickly and rigidly connected with the supporting pile 4 through the connecting steel bars.
The supporting piles 4 are arranged on two sides of the tunnel entering structure 1 in a plurality of rows. Preferably, the four support piles 4 are respectively arranged at two sides of the tunnel entering structure 1 in front and back rows.
The support piles 4 are rotary-digging precast piles. The rotary digging process is adopted to form holes, and the prefabricating process is combined to form piles, so that the construction speed of the supporting piles 4 can be increased, and the construction time of construction workers below the slope body can be reduced.
The bearing platform 5 is an L-shaped prefabricated assembly bearing platform. The construction speed of the frame type protective structure can be increased by adopting the prefabrication assembly process, and the construction time of construction workers below the slope body is reduced.
And a filling structure 6 is arranged in the L-shaped groove of the L-shaped prefabricated assembly bearing platform.
The top of the L-shaped prefabricated assembly bearing platform is of an L-shaped structure, and the L-shaped prefabricated assembly bearing platform is used for reinforcing horizontal anti-pushing connection with the light concrete backfill 6 through the L-shaped mortises. The filling structure 6 is light concrete.
The concrete construction flow is as follows:
1) When the tunnel is in the down slope collapse, observing the down slope, back-pressure backfilling the down slope body on the premise of ensuring safety, backfilling to the height of the bottom surface of the L-shaped prefabricated assembly bearing platform, and further constructing a primary stable structure 3.1 around the collapse boundary line, so as to ensure the relative stability of the non-collapse slope body at the edge of the collapse boundary line during construction;
2) Drilling construction of the rotary-excavated precast pile is carried out by adopting a rotary-excavated drilling machine, and then the rotary-excavated precast pile is constructed;
3) Assembling the L-shaped prefabricated assembled bearing platform and the rotary-digging prefabricated pile by adopting an assembling process;
4) The frame type protection structure is formed by rotary digging precast piles and L-shaped precast spliced bearing platforms, the collapsed grooves are filled with light concrete, and the reinforcing structure 3.2 is constructed in the middle of the primary stable structure 3.1 and in the filling range, so that the whole structure is further ensured to have good strength and stability;
5) After the slope body treatment is completed, the tunnel entering structure 1 is restored, and the construction open cut tunnel structure 7 and the tunnel top backfill 8 are grasped.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variations and modification made to the above embodiment according to the technical matter of the present utility model without departing from the technical scope of the present utility model still fall within the scope of the technical scheme of the present utility model.
Claims (9)
1. A novel protection structure for treating collapse of a tunnel roof and a slope comprises a tunnel entrance structure (1) and an existing anchoring structure (2) arranged at the periphery of the tunnel entrance structure (1); the method is characterized in that: the method is characterized in that a supplementary anchoring structure (3) and a filling structure (6) are arranged in a collapsed region of the existing anchoring structure (2), and a frame type protection structure capable of enclosing a tunnel hole entering structure (1) is arranged below the supplementary anchoring structure (3) and the filling structure (6).
2. The novel protective structure for the treatment of the collapse of the roof of a tunnel according to claim 1, characterized in that: the supplementary anchor structures (3) are staggered with the existing anchor structures (2).
3. The novel protective structure for the treatment of the collapse of the roof of a tunnel according to claim 2, characterized in that: the supplementary anchor structure (3) comprises a primary stable structure (3.1) and a reinforcing structure (3.2) arranged in the middle of the primary stable structure (3.1), wherein the primary stable structure is arranged around the periphery of the collapse area, and the support parameters of the reinforcing structure (3.2) are stronger than those of the primary stable structure (3.1).
4. The novel protective structure for the treatment of the collapse of the roof of a tunnel according to claim 1, characterized in that: the frame-type protection structure comprises supporting piles (4) symmetrically arranged on two sides of the tunnel entering structure (1), and bearing platforms (5) are arranged on the tops of the supporting piles (4).
5. The novel protective structure for treating tunnel roof downhill collapse according to claim 4, wherein: the supporting piles (4) are arranged on two side edges of the tunnel entering structure (1) in a plurality of rows.
6. The novel protective structure for treating tunnel roof downhill collapse according to claim 5, wherein: the support piles (4) are rotary digging precast piles.
7. The novel protective structure for treating tunnel roof downhill collapse according to claim 4, wherein: the bearing platform (5) is an L-shaped prefabricated assembly bearing platform.
8. The novel protective structure for the treatment of the collapse of the roof of a tunnel according to claim 7, characterized in that: the filling structure (6) is arranged in an L-shaped groove of the L-shaped prefabricated assembly bearing platform.
9. The novel protective structure for the treatment of the collapse of the roof of a tunnel according to claim 8, characterized in that: the filling structure (6) is made of light concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321920946.0U CN220539635U (en) | 2023-07-20 | 2023-07-20 | Novel protection structure for tunnel roof upward slope collapse treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321920946.0U CN220539635U (en) | 2023-07-20 | 2023-07-20 | Novel protection structure for tunnel roof upward slope collapse treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220539635U true CN220539635U (en) | 2024-02-27 |
Family
ID=89962626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321920946.0U Active CN220539635U (en) | 2023-07-20 | 2023-07-20 | Novel protection structure for tunnel roof upward slope collapse treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220539635U (en) |
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2023
- 2023-07-20 CN CN202321920946.0U patent/CN220539635U/en active Active
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