Tunnel prefabricated drainage side ditch segment and drainage side ditch
By designing prefabricated drainage ditches sections in the tunnel and introducing seepage from the pavement layer using seepage holes and drainage channels, the problem of insufficient drainage in the tunnel is solved, and more efficient drainage and space optimization is achieved.
Patent Information
- Application Number
- CN202421493572.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The drainage ditches in the existing tunnels have the problem that water seepage in the pavement layer cannot be discharged smoothly, resulting in water accumulation in the lower part of the pavement layer, affecting the working life, and the drainage capacity of the prefabricated side ditches is poor and occupying a large space.
A prefabricated drainage ditch section of a tunnel is designed, including a drainage ditch body, with a drainage channel and seepage holes. The seepage holes are connected to the drainage channel, which are used to introduce water seepage in the pavement layer, and optimize the drainage path and space utilization through the combination of the upper and lower structures.
Effectively prevent water accumulation in the lower part of the pavement layer, reduce pavement layer diseases, reduce maintenance and maintenance costs, improve the overall drainage capacity of the side ditch, and optimize the spatial layout in the tunnel.
Smart Images
Figure CN222796125U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of municipal engineering, in particular to a tunnel prefabricated drainage ditch segment and a drainage ditch. Background Art
[0002] In order to meet the growing cross-city and cross-regional traffic needs, the construction of urban underground transportation tunnels has developed rapidly, and the urban underground space resources have become increasingly tight. In order to drain the rainwater at the tunnel entrance, the road washing water and the leakage water of the structure, it is necessary to set up drainage side ditches on the lower side of the tunnel pavement. Most of the drainage ditches in the existing tunnels use cast-in-place drainage side ditch structures, and a few use prefabricated side ditches. The main problems are as follows: 1) The seepage water in the pavement layer cannot be drained away smoothly, and it gathers at the bottom of the pavement layer, affecting the working life of the pavement layer; 2) The existing prefabricated side ditches have poor drainage capacity and occupy a large space. Utility Model Content
[0003] In order to solve the above problems, on the one hand, the utility model provides a prefabricated tunnel drainage ditch segment, including a drainage ditch body, the drainage ditch body having a drainage channel, and the side wall of the drainage ditch body facing the road surface is provided with seepage holes for discharging seepage water from the road surface layer, the seepage holes are connected to the drainage channel in the drainage ditch body, and there is a certain distance between the seepage holes and the bottom of the drainage channel.
[0004] Furthermore, the drainage ditch body includes an upper structure and a lower structure, the drainage channel includes a first open drainage ditch in the upper structure and a first hidden drainage ditch in the lower structure, a through drainage hole is provided between the first open drainage ditch and the first hidden drainage ditch, and the seepage hole is opened on the side wall of the lower structure and is connected to the first hidden drainage ditch.
[0005] Furthermore, a filter screen is provided on the drainage through hole.
[0006] Furthermore, the drainage through hole is arranged along the entire length of the drainage ditch body.
[0007] Furthermore, the first open drainage ditch is in an arc shape that is wider at the top and narrower at the bottom.
[0008] Furthermore, the drainage channel includes a second open drainage ditch and a second hidden drainage ditch which are arranged in sequence along the width direction of the drainage ditch body. The second hidden drainage ditch is arranged in the side wall of the drainage ditch body facing the road surface. The seepage hole is opened on the side wall of the second hidden drainage ditch and is connected to the second hidden drainage ditch.
[0009] Furthermore, the second open drainage ditch is L-shaped or U-shaped.
[0010] On the other hand, the utility model also provides a prefabricated tunnel drainage ditch, comprising a plurality of drainage ditch segments, wherein the drainage ditch segments are the drainage ditch segments as described above, and each of the drainage ditch segments is sequentially connected and installed in a ditch installation groove between the tunnel pavement and the tunnel curb.
[0011] Furthermore, a filling layer is provided on the inner side of the side ditch installation groove.
[0012] Furthermore, the filling layer is made of waterproof mortar.
[0013] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:
[0014] 1) The prefabricated tunnel drainage ditch segment provided by the utility model is provided with seepage holes on the side wall of the drainage ditch body adjacent to the road surface, which can lead the accumulated water seeping from the road surface layer into the drainage channel, prevent the accumulation of seepage water under the road surface layer, reduce the damage to the road surface layer caused by water accumulation at the bottom, and reduce the maintenance cost of the road surface structure in the tunnel.
[0015] 2) The prefabricated tunnel drainage ditch segment provided by the utility model can effectively reduce the width of the ditch by arranging upper and lower structures for drainage. The lower first drainage ditch makes full use of the height space of the pavement layer, which can improve the overall drainage capacity of the ditch and optimize the space layout in the tunnel.
[0016] 3) The tunnel prefabricated drainage ditch segment provided by the utility model has a filter screen arranged between the upper structure and the lower structure to prevent impurities from entering the lower first drainage ditch and depositing them in the upper first drainage ditch, thereby facilitating the cleaning of the sediment. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 A schematic diagram of the structure of a prefabricated tunnel drainage ditch segment provided in Example 1;
[0019] Figure 2 A partial schematic diagram of the drainage ditch body provided in Example 1;
[0020] Figure 3 A schematic diagram of the structure of a prefabricated tunnel drainage ditch segment provided in Example 2;
[0021] Figure 4 A schematic diagram of the structure of a tunnel prefabricated drainage ditch segment provided in Example 3;
[0022] Figure 5 A schematic diagram of the structure of a prefabricated tunnel drainage ditch provided in Example 4;
[0023] Figure 6 It is a top view of the joints of the drainage ditch body of the utility model.
[0024] 1-drainage ditch body; 11-seepage hole; 12-upper structure; 13-lower structure; 14a-first open drainage ditch; 14b-second open drainage ditch; 15a-first hidden drainage ditch; 15b-second hidden drainage ditch; 16-drainage through hole; 17-filter; 18-filter installation groove; 19-anti-seepage layer; 2-tunnel curbstone; 3-tunnel pavement; 31-pavement layer; 32-cushion layer; 4-ditch installation groove; 5-filling layer. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In the drawings, the size and relative size of some parts may be enlarged for clarity.
[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connection" and "connected" should be interpreted in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] In the description of the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "center", "horizontal", "vertical", "top", "bottom", "inside" and "outside" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] In addition, in the description of the present invention, the terms "first" and "second" are only used to distinguish in the description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0029] The utility model provides a prefabricated drainage ditch segment for a tunnel, comprising a drainage ditch body 1, wherein the drainage ditch body 1 has a drainage channel, and a seepage hole 11 for discharging seepage water from a pavement layer is provided on a side wall of the drainage ditch body 1 facing the pavement, wherein the seepage hole 11 is connected to the drainage channel in the drainage ditch body 1, and a certain distance is provided between the seepage hole 11 and the bottom of the drainage channel.
[0030] Specifically, the drainage ditch body 1 is generally 0.5 to 1 m in length and is prefabricated in a factory. The prefabricated drainage ditch body 1 is transported to the tunnel for installation and use.
[0031] The drainage ditch body structure can adopt the following three embodiments.
[0032] Example 1
[0033] As the instruction manual Figure 1-2 As shown, the drainage ditch body 1 includes an upper structure 12 and a lower structure 13, the upper structure 12 is located above the lower structure 13, the upper end of the upper structure 12 is provided with an opening, the drainage channel includes a first open drainage ditch 14a in the upper structure 12 and a first hidden drainage ditch 15a in the lower structure 13, a through drainage through hole 16 is provided between the first open drainage ditch 14a and the first hidden drainage ditch 15a, the seepage hole 11 is opened on the side wall of the lower structure 13 and is connected with the first hidden drainage ditch 15a; the drainage ditch body 1 adopts an upper and lower structure, which can make full use of the space in the vertical direction, reduce the ditch width, reduce the occupation of the space in the tunnel, and improve the utilization rate of the space in the tunnel.
[0034] Preferably, the drainage ditch composed of the drainage ditch body 1 is connected to a drainage well at its downstream for water seepage from the pavement layer 31 and water on the pavement to be discharged. The seepage hole 11 is connected to the first drainage ditch 15a. To prevent the water in the first drainage ditch 15a from seeping back into the pavement layer 31, there is a certain distance between the seepage hole 11 and the bottom of the first drainage ditch 15a. The setting height of the seepage hole 11 is not lower than the daily drainage height of the first drainage ditch 15a. To ensure the seepage discharge effect of the pavement layer 31, each of the drainage ditch bodies 1 is provided with a plurality of seepage holes 11, and each seepage hole 11 is arranged at intervals along the length direction of the drainage ditch body 1.
[0035] In some embodiments, a one-way valve is also provided on the seepage hole 11, which allows the seepage water of the pavement layer to flow into the drainage channel and prevents the water in the drainage channel from seeping back to the pavement layer. Of course, whether the one-way valve is provided can be set according to needs.
[0036] Preferably, a one-way slope is provided in the seepage hole 11, and the height of the slope close to the road surface is greater than the height close to the first drainage ditch 15a, which can further ensure that the seepage water from the road surface flows into the first drainage ditch 15a through the seepage hole.
[0037] In an optimized implementation manner, a filter screen 17 is provided on the drainage through hole 16, a filter screen installation groove 18 is provided at the bottom of the first open drainage ditch 14a, the frame of the filter screen 17 is embedded in the filter screen installation groove 18, filter screen installation grooves 18 are provided on both sides of the drainage through hole 16, and both sides of the filter screen frame are respectively embedded in the filter screen installation grooves 18 on the corresponding sides. After the frame is installed, the filter screen installation groove 18 is filled with waterproof mortar.
[0038] In an optimized implementation mode, the drainage through holes 16 are arranged along the entire length of the drainage ditch body 1. Of course, the drainage through holes 16 can also be holes arranged at intervals at the bottom of the first open drainage ditch 14a.
[0039] In an optimized implementation manner, the first open drainage ditch 14a is in an arc shape that is wide at the top and narrow at the bottom, and the drainage through hole 16 is opened at the lowest point of the arc. The drainage through hole 16 is located above the first hidden drainage ditch 15a, so as to facilitate the water in the first open drainage ditch 14a to be discharged into the hidden drainage ditch 15.
[0040] The drainage ditch body 1 is square in shape, the first drainage hidden ditch 15a is square in shape, the bottom of the first drainage open ditch 14a is arc-shaped, and the volume of the first drainage hidden ditch 15a is larger than the volume of the first drainage open ditch 14a, which facilitates the discharge of water in the first drainage open ditch 14a and improves the drainage capacity of the ditch.
[0041] In this embodiment, the width of the drainage ditch is reduced, and the grille cover plate may not be provided in the upper first drainage ditch 14a, so as to facilitate the cleaning of sediments, reduce the space occupied in the tunnel, and improve the utilization rate of the space in the tunnel.
[0042] Example 2
[0043] As the instruction manual Figure 3As shown, another structure of a drainage ditch body is shown, the drainage channel includes a second open drainage ditch 14b and a second hidden drainage ditch 15b which are arranged in sequence along the width direction of the drainage ditch body 1. The second hidden drainage ditch 15b is arranged in the side wall of the drainage ditch body 1 facing the road surface, and the seepage hole 11 is opened on the side wall of the second hidden drainage ditch 15b and is connected with the second hidden drainage ditch 15b. Preferably, the second open drainage ditch 14b is not connected with the second hidden drainage ditch 15b, and the seepage hole 11 is arranged on the side wall of the second hidden drainage ditch 15b for discharging the seepage water of the road surface layer 31 through the second hidden drainage ditch 15b. The upper end surface of the drainage ditch body 1 is flush with the road surface layer 31, and the top of the second hidden drainage ditch 15b can be used as the road surface layer 31.
[0044] Preferably, the second open drainage ditch 14b is L-shaped.
[0045] Example 3
[0046] As the instruction manual Figure 4 As shown, another structure of the drainage ditch body is shown. The drainage ditch body in this embodiment has the same structure as that in Embodiment 2 and is not described again. Preferably, the second open drainage ditch 14b is U-shaped.
[0047] Example 4
[0048] As the instruction manual Figure 5 and 6 As shown, the utility model also provides a prefabricated tunnel drainage ditch, including a plurality of drainage ditch segments, wherein the drainage ditch segments adopt the drainage ditch segments described in any one of Examples 1-3, and each of the drainage ditch segments is connected in sequence and installed in a ditch installation groove 4 between the tunnel pavement 3 and the tunnel curb 2.
[0049] Preferably, the tunnel pavement 3 includes a pavement layer 31 and a cushion layer 32, the pavement layer 31 is located above the cushion layer 32, a ditch mounting groove 4 is provided between the tunnel pavement 3 and the tunnel curb 2, the upper end surface of the drainage ditch body 1 is flush with the pavement layer 31, the bottom of the drainage ditch body 1 extends into the cushion layer 32, and the filling layer 5 is provided between the bottom of the drainage ditch body 1 and the cushion layer 32. At the same time, the filling layer 5 is also provided between the side wall of the drainage ditch body 1 and the tunnel curb 2; the top of the tunnel curb 2 is higher than the upper end surface of the drainage ditch body 1.
[0050] In the above three embodiments, adjacent drainage ditch bodies 1 are assembled in the tunnel by splicing, and an anti-seepage layer 19 is provided at the joint position, as shown in the attached manual. Figure 6 As shown, specifically, the anti-seepage layer 19 is made of waterproof mortar, and the joints are densely filled with waterproof mortar to prevent water leakage in the drainage ditch.
[0051] Preferably, the filling layer 5 also adopts waterproof mortar.
[0052] In an optimized implementation mode, a grille cover is provided above the open drainage ditch 14 of the drainage ditch body 1 to ensure walking safety on the pavement layer.
[0053] After the drainage ditch body 1 in Example 2 is installed, the L-shaped structure of the drainage ditch body 1 abuts against the tunnel curb 2, and a second drainage open ditch 14b is formed between the drainage ditch body 1 and the tunnel curb 2.
[0054] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0055] Those skilled in the art will appreciate that the present invention can be implemented in many other specific forms without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been described, it should be understood that the present invention should not be limited to this embodiment, and those skilled in the art can make changes and modifications within the spirit and scope of the present invention as defined by the attached claims.
Claims
1. A tunnel prefabricated drainage ditch segment, comprising a drainage ditch body, wherein the drainage ditch body has a drainage channel, characterized in that: A seepage hole for discharging seepage water from the road surface is provided on the side wall of the drainage ditch body facing the road surface. The seepage hole is connected to the drainage channel in the drainage ditch body, and there is a certain distance between the seepage hole and the bottom of the drainage channel.
2. The prefabricated tunnel drainage ditch segment according to claim 1, characterized in that: The drainage ditch body includes an upper structure and a lower structure, the drainage channel includes a first open drainage ditch in the upper structure and a first hidden drainage ditch in the lower structure, a through drainage hole is provided between the first open drainage ditch and the first hidden drainage ditch, and the seepage hole is opened on the side wall of the lower structure and is connected to the first hidden drainage ditch.
3. The prefabricated tunnel drainage ditch segment according to claim 2, characterized in that: A filter screen is arranged on the drainage through hole.
4. The prefabricated tunnel drainage ditch segment according to claim 2, characterized in that: The drainage through hole is arranged along the entire length of the drainage ditch body.
5. The prefabricated tunnel drainage ditch segment according to claim 2, characterized in that: The first open drainage ditch is in an arc shape that is wider at the top and narrower at the bottom.
6. The prefabricated tunnel drainage ditch segment according to claim 1, characterized in that: The drainage channel includes a second open drainage ditch and a second hidden drainage ditch which are arranged in sequence along the width direction of the drainage ditch body. The second hidden drainage ditch is arranged in the side wall of the drainage ditch body facing the road surface. The seepage hole is opened on the side wall of the second hidden drainage ditch and is connected to the second hidden drainage ditch.
7. The prefabricated tunnel drainage ditch segment according to claim 6, characterized in that: The second open drainage ditch is L-shaped or U-shaped.
8. A prefabricated tunnel drainage ditch, comprising a plurality of drainage ditch segments, characterized in that: The drainage ditch segment is the drainage ditch segment according to any one of claims 1 to 7, and each of the drainage ditch segments is connected in sequence and installed in a ditch installation groove between the tunnel pavement and the tunnel curb.
9. The prefabricated tunnel drainage ditch according to claim 8, characterized in that: A filling layer is arranged inside the side ditch installation groove.
10. The prefabricated tunnel drainage ditch according to claim 9, characterized in that: The material of the filling layer is waterproof mortar.