CN217558340U - Protection system for construction of extra-long tunnel - Google Patents
Protection system for construction of extra-long tunnel Download PDFInfo
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- CN217558340U CN217558340U CN202220720574.6U CN202220720574U CN217558340U CN 217558340 U CN217558340 U CN 217558340U CN 202220720574 U CN202220720574 U CN 202220720574U CN 217558340 U CN217558340 U CN 217558340U
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- inverted arch
- side wall
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- hole body
- main hole
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Abstract
The utility model discloses a protection system of construction of extra long tunnel, include: the ventilation device is used for conveying circulating gas to the main hole body through the inlet of the auxiliary hole body and then to be discharged through the outlet of the main hole body; the supporting body comprises an inverted arch bottom die structure and an inverted arch supporting structure, and the inverted arch supporting structure is connected to the upper end of the inverted arch bottom die structure; the inverted arch bottom die structure is connected to the bottom of the main hole body, and the inverted arch supporting structure is connected to the inner side wall of the main hole body; the guide strip is provided with at least one arc-shaped guide part, and the arc-shaped guide part is positioned between the inner side wall of the main hole body and the inverted arch supporting structure; the arc-shaped guide part is used for guiding gas accumulated in the water inrush section in the main hole body. The technical scheme of the utility model can improve construction environment's barrier propterty, the security of guarantee construction.
Description
Technical Field
The utility model relates to a tunnel construction technical field, concretely relates to protection system of construction of extra long tunnel.
Background
The tunnel is an engineering building which is built underground, and is provided with an access at two ends for vehicles, pedestrians, water flow, pipelines and the like to pass through. OECD (international organization for economic cooperation and development) 1970 tunneling conference combines definitions of various factors for tunnels: "the cross-section area built under the ground by any method according to the specified shape and size is more than 2m 2 The cavity. Both are referred to as tunnels. In the construction process of the extra-long tunnel, although some areas with dangerous substances can be avoided as much as possible, the extra-long tunnel is often very expensive and sometimes has to pass through; therefore, the whole protection of the extra-long tunnel is very important in the construction process of the extra-long tunnel.
However, the stability of the protective structure in the existing extra-long tunnel construction is not strong, the phenomena of accumulation of excessive fluid, collapse and the like easily occur, the occupational health of operators is threatened, and therefore the potential safety hazard of construction is easily formed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a protection system of extra long tunnel construction aims at improving the barrier propterty of construction environment, ensures the security of construction.
The utility model discloses the above-mentioned problem that will solve is in order to realize through following technical scheme:
a protection system for construction of an extra-long tunnel comprises:
the ventilation device is used for conveying circulating gas to the main hole body through the inlet of the auxiliary hole body and then to be discharged through the outlet of the main hole body;
the supporting body comprises an inverted arch bottom die structure and an inverted arch supporting structure, and the inverted arch supporting structure is connected to the upper end of the inverted arch bottom die structure; the inverted arch bottom formwork structure is connected to the bottom of the main hole body, and the inverted arch supporting structure is connected to the inner side wall of the main hole body;
the guide strip is provided with at least one arc-shaped guide part, and the arc-shaped guide part is positioned between the inner side wall of the main hole body and the inverted arch supporting structure; the arc-shaped guide part is used for guiding gas accumulated in the water inrush section in the main hole body.
Preferably, the arc-shaped guide part comprises at least two first arc convex parts and at least one first arc concave part, and the first arc concave parts are arranged in a staggered manner along a first direction; the inner side of the first arc-shaped convex part is abutted against the top end of the inverted arch bottom die structure, and the outer side of the first arc-shaped convex part is abutted against the inner top of the main hole body; the first arc recess extends through a top of the inverted arch bottom mold structure.
Preferably, the inverted arch supporting structure comprises at least two transverse supporting brackets and at least one longitudinal supporting bracket, the transverse supporting brackets are arranged side by side, and the longitudinal supporting bracket penetrates through the transverse supporting brackets and forms a first whole with the transverse supporting brackets.
Preferably, a first mounting gap is arranged between the transverse supporting brackets; the inner side of the first arc convex part is abutted against the top end of the transverse support bracket; the longitudinal support bracket extends through the first mounting gap.
Preferably, inverted arch die block structure includes that at least one die block supports section and two at least filling side moulds, the die block support the first end of section with inverted arch supporting construction connects, the second end that the die block supported the section with the first end intercommunication of filling the side mould.
Preferably, the bottom die supporting section comprises an end die body and a side wall body, a first end of the end die body is communicated with a first end of the filling side die, and a second end of the end die body is communicated with a first end of the side wall body; the second end of the side wall body is connected with the inverted arch supporting structure; and the outer side wall of the side wall body is abutted against the inner side wall of the main hole body.
Preferably, the inverted arch bottom die structure further comprises a positioning assembly, the positioning assembly is used for positioning and connecting the end die body and the side wall body, and/or the positioning assembly is used for positioning and connecting the side wall body and the inner bottom of the main hole body.
Preferably, the positioning assembly comprises a first reinforcing body and a second reinforcing body, and the first reinforcing body is connected with the outer side wall of the end mold body and the outer side wall of the side wall body respectively; the second reinforcing body is respectively connected with the outer side wall of the side wall body and the inner bottom of the main hole body.
Preferably, the ventilation device comprises a second jet part, a first jet part and a circulating gas adjusting assembly, wherein the first jet part is connected with a second inner cavity in the auxiliary hole body and is used for conveying circulating gas into the second inner cavity; the circulating gas adjusting assembly is connected in the second inner cavity and is used for adjusting and conveying the entering circulating gas into the first inner cavity in the main cavity; the second fluidic member is connected to the first lumen and is configured to discharge a circulating gas out of the first lumen.
Preferably, the circulating gas adjusting assembly comprises a first pressurizing flow diverter, a second pressurizing flow diverter, a first support plate, a first guide pipe and a second guide pipe, wherein the first pressurizing flow diverter and the second pressurizing flow diverter are respectively connected to the first support plate; the first end of the first pressurizing and flow-guiding device is communicated with the second inner cavity, the second end of the first pressurizing and flow-guiding device is communicated with the first end of the first guide tube, and the second end of the first guide tube penetrates through the first circulating channel and extends to the tunnel face in the main tunnel body; the first end of the second pressurizing flow diverter is communicated with the second inner cavity, the second end of the second pressurizing flow diverter is communicated with the first end of the second guide tube, and the second end of the second guide tube extends to the second palm surface in the auxiliary hole body.
Has the advantages that: the technical scheme of the utility model is that the ventilation device is adopted to convey the circulating gas to the main tunnel body from the inlet of the auxiliary tunnel body, so that the content of the circulating gas can be kept in the construction process of the extra-long tunnel, and the foundation protection effect on constructors is improved; the supporting body formed by the inverted arch bottom die structure and the inverted arch supporting structure can improve the supporting stability of the construction environment in the tunnel, so that the secondary protection effect on constructors is realized; meanwhile, water gushing of a water gushing section in the main hole body in the construction process can be effectively guided through the guide strip and the arc-shaped guide part of the guide strip, so that impact stress on the support body is reduced, and the support stability of the support body can be further improved; and further multiple protection effects can be realized, and the construction safety is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the protection system for construction of an extra-long tunnel according to the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the protection system for construction of an extra-long tunnel according to the present invention.
Fig. 3 is a schematic view of a supporting body of an embodiment of the protection system for the construction of the extra-long tunnel according to the present invention.
Fig. 4 is a schematic view of a supporting body of an embodiment of the protection system for the construction of the extra-long tunnel according to the present invention.
Fig. 5 is a schematic partial structural view of an embodiment of a protection system for construction of an extra-long tunnel according to the present invention.
Fig. 6 is a schematic view of a bottom mold structure of an embodiment of the protection system for the construction of the extra-long tunnel of the present invention.
Fig. 7 is a schematic structural diagram of a guide strip and a support body of an embodiment of the protection system for extra-long tunnel construction according to the present invention.
Fig. 8 is a schematic structural diagram of a guide strip according to an embodiment of the protection system for extra-long tunnel construction of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name(s) |
| 1 | Main hole body | 11 | A first |
| 12 | The first palm surface | 13 | A |
| 14 | Second |
15 | |
| 2 | |
21 | |
| 22 | First |
231 | First pressure- |
| 232 | Second |
233 | First supporting |
| 234 | |
235 | |
| 24 | Second |
25 | |
| 3 | |
31 | Inverted arch bottom die |
| 311 | Middle section of bottom die | 312 | Bottom die supporting |
| 3121 | |
3122 | |
| 3123 | |
313 | |
| 3141 | First reinforcing |
3142 | Second reinforcing |
| 32 | Inverted |
321 | |
| 322 | |
323 | |
| 320 | |
4 | |
| 41 | First arc convex |
42 | First arc concave part |
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if the present invention relates to a directional indication (such as up, down, left, right, front, back, 8230 \8230;, 8230;), the directional indication is only used to explain the relative position relationship between the components in a specific posture, the motion situation, etc., and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a protection system of construction of extra long tunnel.
As shown in fig. 1, 3 and 7, in an embodiment of the present invention, the protection system for extra long tunnel construction; the method comprises the following steps:
the ventilation device is used for conveying circulating gas to the main hole body 1 through the inlet of the auxiliary hole body 2 and then to be discharged through the outlet of the main hole body 1;
the supporting body 3 comprises an inverted arch bottom die structure 31 and an inverted arch supporting structure 32, and the inverted arch supporting structure 32 is connected to the upper end of the inverted arch bottom die structure 31; the inverted arch bottom formwork structure 31 is connected to the bottom of the main hole body 1, and the inverted arch supporting structure 32 is connected to the inner side wall of the main hole body 1;
the guide strip 4 is provided with at least one arc-shaped guide part, and the arc-shaped guide part is positioned between the inner side wall of the main hole body 1 and the inverted arch supporting structure 32; the arc-shaped guide part is used for guiding gas accumulated in the water inrush section in the main hole body 1.
The technical proposal of the utility model adopts the ventilation device to convey the circulating gas to the main tunnel body from the inlet of the auxiliary tunnel body, thus realizing the maintenance of the content of the circulating gas in the construction process of the extra-long tunnel and improving the foundation protection effect on constructors; the supporting body formed by the inverted arch bottom die structure and the inverted arch supporting structure can improve the supporting stability of the construction environment in the tunnel, so that the secondary protection effect on constructors is realized; meanwhile, the water inrush section in the main hole body in the construction process can be effectively guided through the guide strip and the arc-shaped guide part thereof, and the impact stress on the support body is reduced, so that the support stability of the support body can be further improved; and further multiple protection effects can be realized, and the construction safety is improved.
Wherein, in some embodiments, the inverted arch supporting structure 32 is further connected to the bottom of the auxiliary hole body 2, and the inverted arch bottom formwork structure 31 is further connected to the inner side wall of the auxiliary hole body 2; the supporting bodies are respectively connected with the main hole body and the auxiliary hole body in a supporting mode, so that the safety in each hole body can be further guaranteed, and the construction safety is improved.
Wherein the circulating gas may comprise fresh air which may be flowable.
Specifically, in some embodiments, as shown in fig. 8, the arc-shaped guide portion includes at least two first arc protrusions 41 and at least one first arc recessions 42, and the first arc recessions 41 and the first arc recessions 42 are staggered from each other along the first direction; the inner side of the first arc-shaped convex part 41 abuts against the top end of the inverted arch bottom mold structure 31, and the outer side of the first arc-shaped convex part 41 abuts against the inner top of the main hole body 1; the first arc recess 42 extends through the top of the inverted arch bottom mold structure 31. The convex structure through first arc convex part 41 will gush water and discharge to first arc concave part towards the both ends of convex structure, will gush water through first arc concave part again and discharge and leave to can improve discharge efficiency and reduce impact stress.
Specifically, in some conventional manners, as shown in fig. 7, the first direction is a cavity depth direction along the first inner cavity 11 in the active body 1. That is, the water gushing is guided to the left and right inner side ends of the main hole body 1 through the arc-shaped guide parts to be discharged, so that the discharge efficiency can be guaranteed.
In some embodiments, an auxiliary drainage channel 15 is provided between the main hole body 1 and the auxiliary hole body 2, so that gas accumulated in the guided water inrush section flows from a first inner cavity 11 in the main hole body 1 to a second inner cavity 24 in the auxiliary hole body 2; the water accumulation in the main hole body is reduced.
Specifically, in some embodiments, as shown in fig. 4, the inverted arch bottom mold structure 31 includes at least one bottom mold support section 312 and at least two filling side molds 313, a first end of the bottom mold support section 312 is connected to the inverted arch support structure 32, and a second end of the bottom mold support section 312 is communicated with a first end of the filling side molds 313.
Wherein, in some embodiments, the bottom form support section 312 and at least the filling side form 313 each comprise at least two lateral reinforcing bars and at least two longitudinal reinforcing bars distributed in parallel, the lateral reinforcing bars and the longitudinal reinforcing bars being interconnected; that is, the longitudinal steel bars and the transverse steel bars are distributed in a staggered manner to form a grid-shaped structure. The structural stability of formation is pour in the guarantee.
In some embodiments, as shown in fig. 5, the bottom mold support section 312 includes an end mold body 3121 and a side wall body 3122, a first end of the end mold body 3121 communicates with a first end of the filling side mold 313, and a second end of the end mold body 3121 communicates with a first end of the side wall body 3122; the second end of the side wall 3122 is connected to the inverted arch support structure 32; and the outer side wall of the side wall 3122 abuts against the inner side wall of the main hole 1.
In some embodiments, as shown in fig. 5, a transverse construction gap 3123 is provided between the end form 3121 and the side wall 3122; through the transverse construction gap, a corresponding and appropriate transverse construction joint can be formed in the pouring process, so that the structural stability among all sections of templates can be guaranteed, and further the construction quality and the construction efficiency are guaranteed.
Specifically, in some embodiments, the inverted arch bottom mold structure 31 further includes a positioning assembly for positioning and connecting the end mold 3121 and the side wall 3122, and/or the positioning assembly for positioning and connecting the side wall 3122 and the inner bottom of the main hole 1. The structural stability of the support body is guaranteed.
Specifically, in some embodiments, as shown in fig. 6, the positioning assembly includes a first reinforcing body 3141 and a second reinforcing body 3142, the first reinforcing body 3141 being connected to an outer side wall of the end mold 3121 and an outer side wall of the side wall 3122, respectively; the second reinforcement 3142 is connected to the outer sidewall of the side wall 3122 and the inner bottom of the main cavity 1; wherein, the first reinforcement body 3141 is a reinforcing rib plate with a triangular section; the second reinforcement 3142 is a linear reinforcing rib.
And (3) construction pouring process: pouring the pouring concrete into the filling side formwork so that the pouring concrete is poured into the middle section of the inverted arch; stopping pouring the concrete into the filling side formwork after the concrete is poured in the middle section of the inverted arch and the concrete is contacted with or close to the end formwork; pouring concrete into the inverted arch side wall body so as to realize the pouring of the interior of the end mould body and the interior of the inverted arch side wall body in sequence. Because the middle section of the inverted arch is the middle section of the inverted arch with large arc radius, the slope is gentle in the pouring process, and the concrete can be poured from the middle to two sides by a natural concrete paving method; and when the end mold body is poured, pouring the inverted arch side wall body, so that the inverted arch concrete is poured at one time.
Specifically, in some embodiments, as shown in fig. 7, the inverted arch support structure 32 includes at least two lateral support brackets 321 and at least one longitudinal support bracket 322, the lateral support brackets 321 are arranged side by side, and the longitudinal support bracket 322 passes through the lateral support brackets 321 and forms a first integral body with the lateral support brackets 321.
Wherein, in some embodiments, a first mounting gap 320 is provided between the lateral support brackets 321; the inner side of the first arc-shaped convex part 41 is abutted against the top end of the transverse support bracket 321; the longitudinal support bracket 322 extends through the first mounting gap 320.
Specifically, in some embodiments, as shown in fig. 1 and 2, the ventilation device comprises a second fluidic member 14, a first fluidic member 22, and a circulating gas adjustment assembly, the first fluidic member 22 being connected within a second lumen 24 in the auxiliary cavity 2 and being used to deliver circulating gas into the second lumen; the circulating gas adjusting assembly is connected in the second inner cavity 24 and is used for adjusting and conveying the entering circulating gas into the first inner cavity 11 in the main hole body 1; the second fluidic member 14 is connected to the first internal cavity 11 and is configured to discharge the circulating gas out of the first internal cavity 11. Wherein, the second jet flow component 14 and the first jet flow component 22 are jet flow fans.
Wherein, the circulating gas adjusting assembly comprises a first pressurizing flow diverter 231, a second pressurizing flow diverter 232, a first supporting plate 233, a first guide pipe 234 and a second guide pipe 235, and the first pressurizing flow diverter 231 and the second pressurizing flow diverter are respectively connected on the first supporting plate 233; the first end of the first pressurizing flow diverter 231 is communicated with the second inner cavity 24, the second end of the first pressurizing flow diverter 231 is communicated with the first end of the first guide pipe 234, and the second end of the first guide pipe 234 passes through the first circulating channel 13 and extends to the palm surface 12 in the main hole body 1; the first end of the second pressurization flow diverter 232 is communicated with the second inner cavity 24, the second end of the second pressurization flow diverter 232 is communicated with the first end of the second guide tube 235, and the second end of the second guide tube 235 extends to the second palm surface in the auxiliary hole body 2. So that the circulating gas is directly conveyed to the first palm surface in the main hole body for ventilation, conveyed to the second palm surface through the flowing inner cavity, rebounded from the second palm surface, and conveyed to the first palm surface through the first circulating channel; the reasonable utilization rate of the circulating gas can be improved. Wherein, axial fan is all selected for use to first pressure boost drainage ware 231, second pressure boost drainage ware 232.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a protection system of extra long tunnel construction which characterized in that includes:
the ventilation device is used for conveying circulating gas to the main hole body through the inlet of the auxiliary hole body and then to be discharged through the outlet of the main hole body;
the supporting body comprises an inverted arch bottom die structure and an inverted arch supporting structure, and the inverted arch supporting structure is connected to the upper end of the inverted arch bottom die structure; the inverted arch bottom formwork structure is connected to the bottom of the main hole body, and the inverted arch supporting structure is connected to the inner side wall of the main hole body;
the guide strip is provided with at least one arc-shaped guide part, and the arc-shaped guide part is positioned between the inner side wall of the main hole body and the inverted arch supporting structure; the arc-shaped guide part is used for guiding gas accumulated in the water inrush section in the main hole body.
2. A protection system for extra-long tunnel construction according to claim 1, wherein the arc guide portion comprises at least two first arc protrusions and at least one first arc recessions, and the first arc recessions are staggered with each other along a first direction; the inner side of the first arc-shaped convex part is abutted against the top end of the inverted arch bottom die structure, and the outer side of the first arc-shaped convex part is abutted against the inner top of the main hole body; the first arc recess extends through a top of the inverted bottom mold structure.
3. A protection system for construction of an extra long tunnel according to claim 2, wherein the inverted arch support structure comprises at least two lateral support brackets and at least one longitudinal support bracket, the lateral support brackets being arranged side by side, the longitudinal support bracket passing through the lateral support brackets and forming a first integral body with the lateral support brackets.
4. A protection system for construction of an extra long tunnel according to claim 3, wherein a first mounting gap is provided between the lateral support brackets; the inner side of the first arc convex part is abutted against the top end of the transverse support bracket; the longitudinal support bracket extends through the first mounting gap.
5. The protection system of the construction of the extra-long tunnel according to claim 1, wherein the inverted arch bottom formwork structure comprises at least one bottom formwork supporting section and at least two filling side forms, a first end of the bottom formwork supporting section is connected with the inverted arch supporting structure, and a second end of the bottom formwork supporting section is communicated with a first end of each filling side form.
6. The protection system for extra-long tunnel construction according to claim 5, wherein the bottom die supporting section comprises an end die body and a side wall body, a first end of the end die body is communicated with a first end of the filling side die, and a second end of the end die body is communicated with a first end of the side wall body; the second end of the side wall body is connected with the inverted arch supporting structure; and the outer side wall of the side wall body is abutted against the inner side wall of the main hole body.
7. The protection system for construction of the extra-long tunnel according to claim 6, wherein the inverted arch bottom formwork structure further comprises a positioning component, the positioning component is used for positioning and connecting the end formwork body and the side wall body, and/or the positioning component is used for positioning and connecting the side wall body and the inner bottom of the main tunnel body.
8. The system of claim 7, wherein the positioning assembly comprises a first reinforcing body and a second reinforcing body, the first reinforcing body is connected to the outer side wall of the end mold body and the outer side wall of the sidewall body respectively; the second reinforcing body is respectively connected with the outer side wall of the side wall body and the inner bottom of the main hole body.
9. A protection system for construction of an extra long tunnel according to claim 1, wherein said ventilation device comprises a second jet member, a first jet member and a circulating gas adjusting assembly, said first jet member is connected to a second inner cavity in said auxiliary cavity body and is used for conveying circulating gas into said second inner cavity; the circulating gas adjusting component is connected in the second inner cavity and is used for adjusting and conveying the entering circulating gas into the first inner cavity in the main cavity body; the second fluidic member is connected to the first lumen and is configured to discharge a circulating gas out of the first lumen.
10. The protection system for extra-long tunnel construction according to claim 9, wherein the circulating gas adjusting assembly comprises a first pressurizing flow diverter, a second pressurizing flow diverter, a first support plate, a first guide tube and a second guide tube, the first pressurizing flow diverter and the second pressurizing flow diverter are respectively connected to the first support plate; the first end of the first pressurizing flow diverter is communicated with the second inner cavity, the second end of the first pressurizing flow diverter is communicated with the first end of the first guide tube, and the second end of the first guide tube penetrates through the first circulating channel and extends to the tunnel face in the main tunnel body; the first end of the second pressurizing flow diverter is communicated with the second inner cavity, the second end of the second pressurizing flow diverter is communicated with the first end of the second guide tube, and the second end of the second guide tube extends to the second palm surface in the auxiliary hole body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220720574.6U CN217558340U (en) | 2022-03-30 | 2022-03-30 | Protection system for construction of extra-long tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220720574.6U CN217558340U (en) | 2022-03-30 | 2022-03-30 | Protection system for construction of extra-long tunnel |
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| Publication Number | Publication Date |
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| CN217558340U true CN217558340U (en) | 2022-10-11 |
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| CN202220720574.6U Active CN217558340U (en) | 2022-03-30 | 2022-03-30 | Protection system for construction of extra-long tunnel |
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| Country | Link |
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| CN (1) | CN217558340U (en) |
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