CN215632995U - Underground highway - Google Patents
Underground highway Download PDFInfo
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- CN215632995U CN215632995U CN202121839963.2U CN202121839963U CN215632995U CN 215632995 U CN215632995 U CN 215632995U CN 202121839963 U CN202121839963 U CN 202121839963U CN 215632995 U CN215632995 U CN 215632995U
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Abstract
The application discloses an underground highway. The underground highway comprises a main line tunnel, a separation structure and a ramp tunnel. The separation structure is disposed in the main line tunnel and extends a predetermined distance in an extending direction of the main line tunnel to separate the main line tunnel into a merging lane and a non-merging lane. And the exit of the ramp tunnel is provided with a confluence section, the confluence section and the confluence lane are converged and converged in the extension direction of the main line tunnel, and the confluence section and the confluence lane are positioned in the same tunnel section. The technical scheme that this application provided can solve among the prior art construction and the operation of big section tunnel and have the problem of potential safety hazard.
Description
Technical Field
The application relates to the technical field of road traffic, in particular to an underground road.
Background
With the continuous expansion of highway traffic systems in China, underground highway traffic is in networked, large-section and high-speed development, and underground traffic also gradually realizes a fully-intercommunicated or semi-intercommunicated traffic system. However, the difference in space and environment between underground highway traffic and surface highway traffic systems presents a number of difficulties.
The underground highway is often in the mountain area underground, and there is the stratum complicacy, and groundwater is abundant, and geological disasters' many environmental conditions require the height to the construction safety nature, therefore the section of bifurcation tunnel can not too big, and the construction and the operation safety of big section tunnel all have huge hidden danger.
SUMMERY OF THE UTILITY MODEL
The application provides an underground road, its construction that can solve among the prior art large cross section tunnel has the problem of potential safety hazard with the operation.
The present invention provides an underground road comprising:
a main line tunnel;
a partition structure disposed in the main line tunnel and extending a predetermined distance in an extending direction of the main line tunnel to partition the main line tunnel into a merging lane and a non-merging lane; and
and the ramp tunnel, the exit of which is provided with a confluence section, the confluence section and the confluence lane are converged and converged in the extension direction of the main line tunnel, and the confluence section and the confluence lane are positioned in the same tunnel section.
In the implementation process, the separation structure separates the traffic flow in the main line tunnel into a main line traffic flow and a confluence traffic flow, and the ramp traffic flows through the ramp tunnel and travels to the confluence section; the confluent traffic will meet the ramp traffic at the intersection of the confluent section and the confluent lane, which will merge with the main traffic at the end of travel to the separation structure. In the prior art, the tunnels with ramps are all underground bifurcation large-section tunnel structures, and the section span is large, so that construction and operation risks exist, and for this reason, a separation structure is arranged to form two small-section structures (which can be regarded as a non-confluence lane and a confluence lane, and can be regarded as another small-section structure), so that the safety and reliability of the underground structure are facilitated, the construction and operation risks are reduced, the tunnel excavation section is reduced, and the cost is reduced. Meanwhile, the main line traffic flow and the confluence traffic flow are separated through the separation structure, the safe transition of vehicles can be guaranteed under the condition of poor underground traffic sight distance, and the traffic flows are merged after confluence is finished, so that the traffic flow speed is not influenced, and the confluence safety is also guaranteed.
In an alternative embodiment, the partition structure comprises a tunnel partition formed within the main line tunnel.
In an alternative embodiment, the main line tunnel includes a main line merging tunnel and a main line non-merging tunnel arranged in parallel, and wall surfaces between the main line merging tunnel and the main line non-merging tunnel define a partition structure together.
In an alternative embodiment, the partition structure is provided with a hollowed-out portion, the hollowed-out portion being located at an extended end of the partition structure.
In the implementation process, the hollow part is positioned at the tail end of the separation structure, namely the intersection position of the confluence lane and the non-confluence lane, so that the sight distance of the confluence traffic flow, the ramp traffic flow and the main line traffic flow at the intersection is smooth, and the traffic flow is safely merged.
In an alternative embodiment, the hollowed-out portion comprises a hollowed-out hole formed in the partition structure.
In an alternative embodiment, at the extending end of the partition structure, a plurality of central partition piers are arranged at intervals along the extending direction of the main line tunnel, and gaps between adjacent central partition piers are defined as hollows.
In an optional embodiment, the number of lanes of the confluence section is less than that of the ramp tunnels, and a merging line or alternate passing mark is arranged between the confluence section and the ramp tunnels.
In an alternative embodiment, the main line tunnel and the ramp tunnel are each horseshoe-shaped in cross-sectional profile.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic illustration of an underground highway in this embodiment;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1;
FIG. 6 is a cross-sectional view of a merged tunnel constructed by the double-sidewall pit guiding method according to the present embodiment;
fig. 7 is a cross-sectional view of a combined tunnel constructed by the CRD method according to the present embodiment.
Icon: 10-a main line tunnel; 11-a merging lane; 12-a non-merging lane;
20-a separation structure; 21-a hollowed-out portion; 22-separation stake number;
30-ramp tunnels; 31-alternate passage flag;
40-a confluence section; 41-pile number of the confluence section; 42-multiple arch segment;
50-merge tunnels.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solution in the present application will be described below with reference to the accompanying drawings.
The embodiment provides an underground road, which can solve the problem that construction and operation of a large-section tunnel in the prior art have potential safety hazards.
Referring to fig. 1, fig. 1 is a schematic view of an underground road in the present embodiment.
The underground road includes a main line tunnel 10, a partition structure 20, and a ramp tunnel 30.
The partition structure 20 is disposed inside the main line tunnel 10 and extends a predetermined distance in the extending direction of the main line tunnel 10 to partition the main line tunnel 10 into the merging lane 11 and the non-merging lane 12.
The merging section 40 is disposed at the exit of the ramp tunnel 30, the merging section 40 merges with the merging lane 11 in the extending direction of the main line tunnel 10, and the merging section 40 and the merging lane 11 are in the same tunnel section.
The main line tunnel 10 includes three lanes, and after being divided by the division structure 20, the merging lane 11 includes one lane, and the non-merging lane 12 includes two lanes. The ramp tunnel 30 includes two lanes, and after entering the merging section 40, has two lanes in common with the merging lane 11. After the merging is completed, that is, to the end of the partition structure 20, the main line tunnel 10 and the ramp tunnel 30 are merged into the merged tunnel 50, and the merged tunnel 50 has four lanes for the passage of vehicles.
In some embodiments of the present application, please refer to fig. 2, and fig. 2 is a sectional view taken along a-a in fig. 1. The end face width of the main line tunnel 10 meets the requirement of three-lane driving, and the section outline is in a horseshoe shape. Illustratively, the main line tunnel 10 can be constructed by a mining method, the section width is 16.5m, the height is 11.8m, the structure adopts a primary support and secondary lining composite structure form, and the vault and the side wall adopt anchor rod support.
In some embodiments of the present application, please refer to fig. 3, and fig. 3 is a cross-sectional view taken along the line B-B in fig. 1. In fig. 3, the left and right portions are spaced apart, the left portion may be regarded as the main line tunnel 10, and the right portion may be regarded as the ramp tunnel 30. The three lanes of the main line tunnel 10 are divided by the partition structure 20 into one lane of the merging lane 11 and two lanes of the non-merging lane 12. In fig. 3, the main line tunnel 10 has a cross-sectional profile in the shape of a double arch horseshoe, and the construction is performed by the mining method, with the width of the arch-shaped left cross-section (the end face of the non-merging lane 12) being 12m and the height being 9.7m, and the width of the arch-shaped right cross-section (the end face of the merging lane 11) being 8.6m and the height being 7.4 m. The section profile of the ramp tunnel 30 is horseshoe-shaped, a mining method is adopted for construction, the section width of the ramp tunnel 30 is 12.3m, and the height of the ramp tunnel is 9.7 m. In fig. 3, the main line tunnel 10 and the ramp tunnel 30 both adopt a primary support and secondary lining composite structure form, and the vault and the side wall adopt anchor rod supports.
In some embodiments of the present application, please refer to fig. 4, and fig. 4 is a cross-sectional view taken along the line C-C in fig. 1. Fig. 4 is a merged section of the main line tunnel 10 and the ramp tunnel 30, and the left and right parts are separated by the separation structure 20. The left side part is a non-confluence lane 12 of the main line tunnel 10, which comprises two lanes. The right part is a merging section 40 (containing the merging lane 11), comprising two lanes. The main line tunnel 10 and the ramp tunnel 30 shown in fig. 4 are in a double-arch horseshoe-shaped confluence cross section, the construction adopts a mining method, the width of the cross section on the left side of the double arch (the cross section of the non-confluence lane 12 of the main line tunnel 10) is 12m, the height of the cross section is 9.7m, the width of the cross section on the right side of the double arch (the end surface of the confluence section 40) is 17-12 m, the height of the cross section is 12-9.7 m, and the cross section gradually decreases along the extension direction of the confluence cross section until the cross section is consistent with the cross section of the non-confluence lane 12 of the main line tunnel 10.
In some embodiments of the present application, please refer to fig. 5, and fig. 5 is a cross-sectional view taken along the direction D-D in fig. 1. Fig. 5 is a cross section of the merged tunnel 50. The section width of the combined tunnel 50 meets the driving requirement of four lanes, the section outline is in a horseshoe shape, the construction adopts a mining method, the section width is 21m, the height is 13.5m, the structure adopts a primary support and secondary lining composite structure form, and the vault and the side wall adopt anchor rod support.
The partial names described below are explained first:
the main traffic flow refers to a plurality of vehicles traveling on the non-merging lane 12 in the main tunnel 10;
the merging vehicle refers to a plurality of vehicles traveling on the merging lane 11 in the main line tunnel 10;
the ramp traffic refers to a plurality of vehicles traveling in the ramp tunnel 30 and heading toward the merge section 40.
The separation structure 20 separates the traffic flow in the main line tunnel 10 into a main line traffic flow and a confluence traffic flow, and the ramp traffic flow runs to the confluence section 40 through the ramp tunnel 30; the merging traffic will merge with the ramp traffic at the intersection of the merging section 40 and the merging lane 11, and the merging traffic and the ramp traffic will merge with the main line traffic at the end of travel to the separation structure 20, traveling in the merging tunnel 50.
Utility model people discovers, among the prior art, the tunnel that possesses the ramp is the big section tunnel structure of underground bifurcation, because its section span is big, so there are construction and operation risk. For this reason, the utility model discloses the people think, set up partition structure 20, make the tunnel form into two little section structures (can regard as non-confluence lane 12 to be a little section structure, confluence section 40 and confluence lane 11 are another little section structure), then be favorable to the safe and reliable of underground structure, reduce construction and operation risk, reduce tunnel excavation section, reduce the cost. Meanwhile, the main line traffic flow and the confluence traffic flow are separated through the separation structure 20, the safe transition of vehicles can be guaranteed under the condition of poor underground traffic sight distance, and the traffic flows are merged after confluence is finished, so that the traffic flow speed is not influenced, and the confluence safety is also guaranteed. It should be noted that the predetermined distance over which the main line tunnel 10 extends may be a length that is calculated and considered by a designer based on the merging efficiency, the merging safety, and the relevant regulations.
In some embodiments of the present application, the partition structure 20 includes a tunnel partition formed in the main line tunnel 10, that is, the main line tunnel 10 is a double arch tunnel, and the partition structure 20 is an intermediate wall structure of the double arch tunnel, and chambers of the double arch tunnel on both sides of the intermediate wall structure respectively include the merging lane 11 and the non-merging lane 12.
In some embodiments of the present application, the partition structure 20 is configured with a hollow portion 21, and the hollow portion 21 is located at the extending end of the partition structure 20. The hollowed-out part 21 is located at the end of the separating structure 20, that is, the intersection position of the merging lane 11 and the non-merging lane 12, and a driver can know the situation shielded by the separating structure 20 through the hollowed-out part 21, so as to ensure that the sight distance of the merging traffic flow, the ramp traffic flow and the main traffic flow at the intersection is unobstructed, and ensure that the traffic flows are merged safely.
In some embodiments, the hollowed-out portion 21 includes a hollowed-out hole formed in the partition structure 20. Exemplarily, the partition structure 20 is provided with a plurality of hollowed holes arranged at intervals along the extending direction thereof, so that a driver can penetrate through the area shielded by the partition structure 20 through the plurality of hollowed holes in the driving process, thereby ensuring safe confluence.
In some embodiments, at the extending end of the partition structure 20, a plurality of central partition piers are arranged at intervals along the extending direction of the main line tunnel 10, and the gap between adjacent central partition piers is defined as a hollow 21. In the driving process, a driver can penetrate through the area shielded by the separation structure 20 through the plurality of hollow holes, so that safe confluence is guaranteed. It should be noted that, along the central dividing pier, a triangular zone marking line is marked on the ground to ensure the lateral safety of the traveling crane.
In other embodiments of the present application, the main line tunnel 10 is divided into two independent tunnels at a position where the separation is required, the two independent tunnels include a main line confluent tunnel and a main line non-confluent tunnel, and a building structure between the two independent tunnels can be regarded as the separation structure 20. The main line merging tunnel has a merging lane 11, and the main line non-merging tunnel has a non-merging lane 12.
In some embodiments of the present application, a triangular road sign line is provided between the ramp tunnel 30 and the junction 40 to indicate safety to the driver to remind the driver to enter the junction 40.
In some embodiments of the present application, the number of lanes of the merging section 40 is less than the number of lanes of the ramp tunnel 30, for example, the number of lanes of the merging section 40 is one, and the number of lanes of the ramp tunnel 30 is two, so that an alternate passing sign 31 (or a merging passing sign) is provided between the merging section 40 and the ramp tunnel 30 to ensure safe merging of vehicles.
The embodiment of the application also provides a construction method of the underground highway, the underground highway described above can be safely and efficiently constructed by the construction method, and the method comprises the following steps:
the construction of the separation structure comprises the following steps:
s1, before the main line tunnel 10 is constructed to the separation pile number 22, converting the main tunnel double-side wall pilot tunnel construction method into a middle pilot tunnel construction method or a non-middle pilot tunnel construction method, and completing the construction of the separation structure 20; when the construction is carried out by adopting the middle pilot tunnel construction method, firstly constructing pilot tunnels of the separation structure 20, then carrying out concrete pouring of the separation structure 20, and after the concrete pouring of the separation structure 20 is finished and the design strength is met, constructing pilot tunnels and construction main tunnels at two sides of the separation structure 20, namely constructing the merging lane 11 and the non-merging lane 12; when the construction method without the central guide hole is adopted, the partition structure 20 and the main hole (the confluence lane 11 or the non-confluence lane 12) on one side are constructed simultaneously, and the main hole (the non-confluence lane 12 or the confluence lane 11) on the other side can be implemented after the concrete pouring of the main hole and the partition structure 20 is finished and the design strength is met.
Construction of the confluence section, wherein the construction steps of the confluence section comprise:
s2, before the ramp tunnel 30 is constructed to the confluence section pile number 41, a small clear distance section tunnel (the small clear distance tunnel is a special tunnel arrangement form that the thickness of a middle rock wall in the tunnel is smaller than the minimum clear distance of the separated independent double holes) is constructed, and grouting or opposite pulling anchor rod form is adopted for reinforcement according to surrounding rocks and distance conditions around the tunnel.
S3, the ramp tunnel 30 is constructed to the multiple arch section 42 using a medium pilot method or a non-medium pilot method such that the main line tunnel 10, the ramp tunnel 30 and the partition structure 20 are in the form of a triple arch cross-section.
S4, constructing the ramp tunnel 30 to the main line tunnel 10, and constructing the ramp tunnel 30 and the main line tunnel 10 with the same section, so that the sections of the ramp tunnel 30 and the main line tunnel 10 are in the form of a double arch section (as shown in fig. 4).
Combining tunnel construction, wherein the combining tunnel construction step comprises the following steps:
s5, a conversion method, which converts the construction of the middle pilot tunnel method or the non-middle pilot tunnel method into the construction of the double-sidewall pilot tunnel method or the CRD method (cross mid-wall method), to combine the main tunnel 10 and the ramp tunnel 30, thereby forming the combined tunnel 50. Referring to fig. 6, fig. 6 is a cross-sectional view of a merged tunnel 50 constructed by a double-sidewall pit guide method. Referring to fig. 7, fig. 7 is a sectional view of a combined tunnel 50 constructed by a CRD method.
After the construction of the merged tunnel 50 is completed, traffic signs, marking lines, safety facilities may be provided in the underground highway for safe driving of vehicles.
After the partition structure 20 is constructed, the partition structure 20 may be hollowed out by forming a hole in the partition structure 20 to form a hollowed-out hole, or casting a central partition pier after the construction of the combined tunnel 50 is completed.
It should be noted that, the underground highway formed by the construction method of the underground highway reduces the span of the underground forked large-section tunnel structure into two small-section structures (two small-section structures formed by the partition structure 20 in a spaced manner) on the premise of not affecting the traffic flow, which is beneficial to the safety and reliability of the underground structure, reduces the construction and operation risks, reduces the tunnel excavation section and reduces the cost. The non-confluence traffic flow and the confluence traffic flow are separated through the separation structure 20, safe transition can be achieved under the condition of poor underground traffic sight distance, the traffic flows are merged after confluence is finished, the traffic flow speed is not affected, and confluence safety is guaranteed.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. An underground highway, comprising:
a main line tunnel;
a partition structure disposed in the main line tunnel and extending a predetermined distance in an extending direction of the main line tunnel to partition the main line tunnel into a merging lane and a non-merging lane; and
and the exit of the ramp tunnel is provided with a confluence section, the confluence section and the confluence lane are converged and converged in the extension direction of the main line tunnel, and the confluence section and the confluence lane are positioned in the same tunnel section.
2. An underground road according to claim 1,
the partition structure includes a tunnel partition wall formed within the main line tunnel.
3. An underground road according to claim 1,
the separation structure is provided with a hollow part, and the hollow part is positioned at the extending tail end of the separation structure.
4. An underground road according to claim 3,
the hollow part comprises a hollow hole formed in the separation structure.
5. An underground road according to claim 3,
and a plurality of central separation piers are arranged at the extending tail end of the separation structure at intervals along the extending direction of the main line tunnel, and gaps between the adjacent central separation piers are defined as the hollow parts.
6. An underground road according to claim 1,
the number of lanes of the confluence section is less than that of the ramp tunnels, and a parallel line or alternate passing mark is arranged between the confluence section and the ramp tunnels.
7. An underground road according to claim 1,
and a road access triangular belt marking line is arranged between the ramp tunnel and the confluence section.
8. An underground road according to claim 1,
the section profiles of the main line tunnel and the ramp tunnel are horseshoe-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121839963.2U CN215632995U (en) | 2021-08-06 | 2021-08-06 | Underground highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121839963.2U CN215632995U (en) | 2021-08-06 | 2021-08-06 | Underground highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215632995U true CN215632995U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121839963.2U Active CN215632995U (en) | 2021-08-06 | 2021-08-06 | Underground highway |
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| Country | Link |
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| CN (1) | CN215632995U (en) |
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- 2021-08-06 CN CN202121839963.2U patent/CN215632995U/en active Active
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