CN214741338U - Slope tunneling tunnel construction structure - Google Patents
Slope tunneling tunnel construction structure Download PDFInfo
- Publication number
- CN214741338U CN214741338U CN202120582455.4U CN202120582455U CN214741338U CN 214741338 U CN214741338 U CN 214741338U CN 202120582455 U CN202120582455 U CN 202120582455U CN 214741338 U CN214741338 U CN 214741338U
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- China
- Prior art keywords
- tunnel
- construction
- slope
- arch
- reinforced concrete
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- Expired - Fee Related
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- 238000010276 construction Methods 0.000 title claims abstract description 47
- 230000005641 tunneling Effects 0.000 title description 6
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 22
- 239000002689 soil Substances 0.000 claims abstract description 20
- 238000005728 strengthening Methods 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 description 11
- 239000004568 cement Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a slope tunnelling tunnel construction structure, including setting up soil nail wall bank protection on the tunnel slope and setting up the tunnel just lining structure at the tunnel inlayer, soil nail wall bank protection is followed soil nail position and is indulged transversely crisscross the strengthening rib that is equipped with respectively, tunnel slope department is along the tunnel just the outer contour line of digging of lining structure and is equipped with reinforced concrete uide bushing arch, tunnel portal department sets up along the arch camber the intraductal level of difference of uide bushing is provided with big pipe shed, big pipe shed set up the degree of depth and is greater than or equal to 10 m. The utility model discloses a slope tunnelling tunnel construction structure has mainly solved the unable open cut construction's of part underground infrastructure problem, and the safety of protection construction that can be fine can be solved and tunnel construction is carried out under the prerequisite that does not possess the setting shaft at the job site, can improve construction progress reduction of erection time greatly in the construction, also can practice thrift the cost.
Description
Technical Field
The utility model relates to a tunnel construction field especially relates to a slope tunnelling tunnel construction structure.
Background
In recent years, the state has vigorously developed comprehensive municipal works such as underground comprehensive pipe galleries and the like, most of the works are carried out by adopting an open cut method based on cost control, but the existing underground obstacles are more due to the construction of urban infrastructure, and the works of adopting the open cut method can damage the existing underground obstacles to different degrees.
At present, according to the prior art, measures such as relocation and protection are mostly adopted for the method for treating the underground obstacles, but when part of underground infrastructure cannot be relocated or effectively protected due to site conditions and the particularity of the infrastructure, the foundation pit cannot be used for large-area open cut construction. Therefore, for the construction of the special underground infrastructure, a new construction mode is needed to meet the construction requirements, so that the safe operation of the underground existing infrastructure can be achieved, and meanwhile, the safety of construction operation can be ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the large tracts of land construction can not be carried out to the part district foundation ditch, studying the safe operation that can effectively guarantee underground existing condition infrastructure, also can guarantee the safe slope tunnelling tunnel construction structure of construction operation simultaneously.
For realizing the above-mentioned purpose, the utility model provides a slope tunnelling tunnel construction structure, including setting up soil nail wall bank protection on the tunnel slope and setting up the tunnel just lining structure at the tunnel inlayer, soil nail wall bank protection is followed soil nail position and is indulged transversely crisscross strengthening rib that is equipped with respectively, tunnel slope department is equipped with reinforced concrete uide bushing arch along the outer contour line of digging of tunnel just lining structure, reinforced concrete uide bushing arch is deepened C30 reinforced concrete guide wall by phi 140 uide bushing and is constituted, tunnel portal department sets up along the arch-forming line the intraductal level of uide bushing is provided with big pipe shed respectively, big pipe shed adopts phi 108 big pipe shed advance support, adjacent big pipe shed hoop interval 300mm, big pipe shed's the setting depth of setting up is greater than or equal to 10 m.
Preferably, the soil nails are made of phi 20 steel bars by grinding.
Preferably, the reinforcing ribs are made of phi 14 reinforcing steel bars, and the spray anchor is C20 concrete with the thickness of 100 mm.
Preferably, the longitudinal and transverse spacing of the reinforcing ribs is not more than 1200 mm.
Preferably, the wall thickness of the guide sleeve is 5mm, and the length of the reinforced concrete guide sleeve arch is set according to the actual size of the reinforced concrete guide arch wall.
Preferably, the wall thickness of the large pipe shed is 6mm, and the circumferential distance is 300 mm.
Preferably, the grouting slurry in the step C is cement slurry or cement-water-glass double-fluid slurry.
Based on the technical scheme, the utility model has the advantages that: by adopting the slope tunneling tunnel construction structure, the safety of protection construction can be good, tunnel construction can be carried out on the premise that a vertical shaft is not arranged on a construction site, the construction progress can be greatly improved, the construction period can be greatly shortened, and the cost can be saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
FIG. 1 is a sectional view of a construction structure of a slope tunneling tunnel;
fig. 2 is an elevation view of a construction structure of a slope heading tunnel.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
The utility model provides a slope tunnelling tunnel construction structure, as shown in figure 1 ~ figure 2, wherein show the utility model discloses a preferred embodiment.
The utility model discloses a to part underground infrastructure because of the particularity of site conditions and facility self can't change when moving or effective protection, this section pit just can't carry out the open cut construction of large tracts of land and a slope tunnelling tunnel construction structure that provides.
As shown in fig. 1 and 2, the slope tunneling tunnel construction structure comprises soil nailing wall revetment arranged on a tunnel slope and a tunnel primary lining structure 4 arranged in a tunnel inner layer, wherein reinforcing ribs are respectively arranged on the soil nailing wall revetment in a longitudinally and transversely staggered manner along the soil nailing positions, a reinforced concrete guide sleeve arch is arranged at the tunnel slope along an outer excavation contour line of the tunnel primary lining structure 4, the reinforced concrete guide sleeve arch is formed by a phi 140 guide sleeve 2 penetrating into a C30 reinforced concrete guide wall 1, large pipe sheds 3 are respectively horizontally arranged in the guide sleeve 2 arranged at tunnel portal along an arch raising line, the large pipe sheds 3 are supported by phi 108 large pipe shed advance supports, the circumferential distance between adjacent large pipe sheds 3 is 300mm, and the arrangement depth of the large pipe sheds 3 is not less than 10 m.
Preferably, in the step a, the soil nails are made by grinding steel bars with a diameter of 20, and the longitudinal and transverse intervals of the soil nails are not more than 1200 mm.
Preferably, the reinforcing ribs are made of phi 14 reinforcing steel bars, and the spray anchor is C20 concrete with the thickness of 100 mm.
Particularly, the longitudinal and transverse spacing of the soil nails is not more than 1200 mm. The wall thickness of the guide sleeve 2 is 5mm, and the length of the guide sleeve arch of the reinforced concrete is set according to the actual size of the guide arch wall of the reinforced concrete. The wall thickness of the large pipe shed 3 is 6 mm.
The utility model discloses a slope tunnelling tunnel construction structure can refer to following step and construct:
A. slope protection construction of a slope soil nail wall: adopting the construction of spraying anchor and protecting wall of soil nailing wall, respectively arranging reinforcing ribs along the longitudinal and transverse directions along the soil nailing position;
B. construction of the reinforced concrete guide arch wall: according to the field situation, a reinforced concrete guide sleeve arch is arranged at the slope along the excavation contour line outside the tunnel primary lining structure 4, and the reinforced concrete guide sleeve arch is formed by a phi 140 guide sleeve 2 penetrating into a C30 reinforced concrete guide wall 1; the arranged reinforced concrete guide sleeve arch mainly prevents the slope from sliding laterally, and can support the advanced large pipe shed; the depth of the guide sleeve is set according to the actual size of the reinforced concrete guide arch wall, and the guide sleeve is used for driving the guide wall into a large pipe shed after the construction of the guide wall is finished;
C. advanced grouting support: b, horizontally arranging large pipe sheds 3 in guide sleeves arranged along the arch lifting line at the tunnel door in the step B respectively, wherein the large pipe sheds 3 are supported in advance by phi 108 large pipe sheds, the annular distance is 300mm, and the arranging depth is not less than 10 m;
D. and (3) grouting after the construction is finished, wherein the grouting slurry is cement slurry or cement-water-glass double-liquid slurry, constructing the primary lining structure 4 of the tunnel after the steps are finished, and then checking and accepting the structure.
In the embodiment, the grouting slurry is cement slurry or cement-water-glass double-liquid slurry. The cement slurry is used for daily grouting, and if a sand-containing stratum appears, cement-water-glass double-liquid slurry can be used, and the tunnel primary lining construction can be carried out after grouting is finished.
By adopting the slope tunneling tunnel construction structure, the safety of protection construction can be good, tunnel construction can be carried out on the premise that a vertical shaft is not arranged on a construction site, the construction progress can be greatly improved, the construction period can be greatly shortened, and the cost can be saved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (6)
1. The utility model provides a slope tunnelling tunnel construction structure which characterized in that: including setting up soil nail wall bank protection on the tunnel slope and setting up tunnel primary lining structure (4) at the tunnel inlayer, soil nail wall bank protection is equipped with the strengthening rib along soil nail position longitudinal and transverse crisscross respectively, tunnel slope department is equipped with reinforced concrete uide bushing arch along the outer contour line of digging of tunnel primary lining structure (4), reinforced concrete uide bushing arch is deepened C30 reinforced concrete guide wall (1) by phi 140 uide bushing (2) and is constituted, tunnel portal department sets up along the arch-forming line the level is provided with big pipe-shed (3) in uide bushing (2) respectively, big pipe-shed (3) adopt phi 108 big pipe-shed advance support, adjacent big pipe-shed (3) circumferential spacing 300mm, the degree of depth that sets up of big pipe-shed (3) is more than or equal to 10 m.
2. The structure of claim 1, wherein: the soil nail is made by grinding a phi 20 steel bar.
3. The structure of claim 1, wherein: the reinforcing ribs are made of phi 14 reinforcing steel bars, and the spray anchor is C20 concrete with the thickness of 100 mm.
4. The structure of claim 3, wherein: the longitudinal and transverse spacing of the reinforcing ribs is less than or equal to 1200 mm.
5. The structure of claim 1, wherein: the wall thickness of the guide sleeve (2) is 5mm, and the length of the guide sleeve arch of the reinforced concrete is correspondingly set according to the actual size of the guide arch wall of the reinforced concrete.
6. The structure of claim 1, wherein: the wall thickness of the large pipe shed (3) is 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120582455.4U CN214741338U (en) | 2021-03-10 | 2021-03-10 | Slope tunneling tunnel construction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120582455.4U CN214741338U (en) | 2021-03-10 | 2021-03-10 | Slope tunneling tunnel construction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214741338U true CN214741338U (en) | 2021-11-16 |
Family
ID=78596309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120582455.4U Expired - Fee Related CN214741338U (en) | 2021-03-10 | 2021-03-10 | Slope tunneling tunnel construction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214741338U (en) |
-
2021
- 2021-03-10 CN CN202120582455.4U patent/CN214741338U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |