Deeply-buried drainage tunnel structure
By using a reverse filter sealing structure composed of circular tube-type plastic blind pipes, drainage gravel and non-woven geotextile in the concrete block flow holes of deep buried drainage holes, rapid disassembly and renewal are achieved, solving the problem of difficulty in maintaining traditional structures and improving drainage efficiency and structural stability.
Patent Information
- Application Number
- CN202420926933.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The traditional deep buried drainage hole anti-filtration sealing structure is difficult to achieve rapid update and disassembly, which increases maintenance costs and affects the long-term and stable operation of the drainage system.
Round tube-type plastic blind pipe is used as the anti-filtration sealing structure, the internal is filled with drainage gravel, the outer part is wrapped with non-woven geotextile, and it is set in the flow guide holes of the concrete blocks to achieve rapid disassembly and updates.
By quickly dismantling and updating the anti-filtration sealing structure, the problem of difficulty in maintaining the traditional structure is solved, the stability of the structure is enhanced, the drainage efficiency is improved, and the safe operation of water conservancy projects is provided.
Smart Images
Figure CN222700927U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water seepage drainage equipment, and in particular relates to a deep-buried drainage hole structure. Background Art
[0002] In the process of water conservancy project construction, the deep-buried drainage hole structure, as a key engineering structure, is widely used in the collection and drainage work at the deep bottom of backfill soil. The main function of this structure is to effectively collect and treat groundwater or rainwater in the deep-buried ditch caused by backfill soil to prevent it from having an adverse effect on the main structure of the downstream project. However, traditional drainage holes are often unable to effectively drain water, which in turn poses a potential safety threat to downstream buildings. The anti-filtration and plugging structure is a key component in the drainage hole structure, which is used to prevent external impurities from entering the drainage system while allowing water to pass through. Traditional anti-filtration and plugging structures are often difficult to achieve simple updating and disassembly, which not only increases maintenance costs, but also affects the long-term stable operation of the drainage system. Utility Model Content
[0003] The utility model aims to provide a deep-buried drainage hole structure, which solves the problem that the existing drainage hole anti-filtration and plugging structure is difficult to update and disassemble.
[0004] The technical solution adopted by the utility model is a deep-buried drainage hole structure, including a gully channel, a drainage tunnel is opened on one side below the gully channel, the extension direction of the drainage tunnel intersects with the extension direction of the gully channel in space, the axis of the drainage tunnel and the bottom of the gully channel form a slope of 1% to 2%, a blocking structure is provided at one end of the drainage tunnel close to the gully channel, a crushed stone drainage layer is provided at the end of the blocking structure away from the drainage tunnel, the crushed stone drainage layer is located at the bottom of the gully channel, and a backfill soil layer is laid on the top of the crushed stone drainage layer relative to the inner side of the gully channel.
[0005] The utility model is also characterized in that:
[0006] The plugging structure comprises a concrete block, a plurality of diversion holes are opened in the concrete block along the axial direction of the drainage tunnel, and an anti-filtration plugging structure is arranged in the diversion hole.
[0007] The anti-filtration plugging structure comprises a circular tubular plastic blind pipe, which is fitted with the inner wall of the diversion hole, the inside of which is filled with drainage gravel b, and the outside of which is wrapped with a non-woven geotextile b.
[0008] The gravel drainage layer comprises a non-woven geotextile a, which is in a bag shape and filled with drainage gravel a.
[0009] The drainage tunnel and the sealing structure are cast integrally with concrete.
[0010] The beneficial effects of the utility model are:
[0011] The deep-buried drainage hole structure provided by the utility model installs an anti-filtration plugging structure in the diversion hole. The anti-filtration plugging structure consists of a circular plastic blind pipe, drainage gravel filled inside the circular plastic blind pipe, and a non-woven geotextile wrapped outside the circular plastic blind pipe. The structure can be quickly disassembled and updated according to the use cycle, thereby solving the problem of difficult updating and disassembly of the existing drainage hole anti-filtration plugging structure, enhancing the stability of the structure, improving the drainage efficiency, and providing a strong guarantee for the safe operation of the water conservancy project and the stability of downstream buildings. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the planar structure of the deep buried drainage hole structure of the utility model;
[0013] Figure 2 for Figure 1 Structural diagram from perspective A;
[0014] Figure 3 It is a structural schematic diagram of the blocking structure in the deep-buried drainage hole structure of the utility model;
[0015] Figure 4 for Figure 3 Schematic diagram of the structure from perspective B.
[0016] In the figure, 1. gully channel, 2. backfill soil layer, 3. drainage tunnel, 4. blocking structure, 41. concrete block, 42. diversion hole, 5. gravel drainage layer, 51. non-woven geotextile a, 52. drainage gravel a, 6. circular tube type plastic blind pipe, 7. non-woven geotextile b, 8. drainage gravel b. DETAILED DESCRIPTION
[0017] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.
[0018] The deep buried drainage hole structure provided by the utility model is as follows: Figure 1 and Figure 2 As shown, it includes a gully channel 1, and a drainage tunnel 3 is opened on one side below the gully channel 1. The extension direction of the drainage tunnel 3 intersects with the extension direction of the gully channel 1 in space. The axis of the drainage tunnel 3 and the bottom of the gully channel 1 form a slope of 1% to 2%, that is, the elevation of the starting bottom plate is high and the elevation of the outlet bottom plate is low, which can smoothly drain the infiltrated water.
[0019] A blocking structure 4 is provided at one end of the drainage tunnel 3 close to the gully channel 1. The blocking structure 4 and the drainage tunnel 3 are cast as a whole with concrete, or dowel bars are reserved at the end of the drainage tunnel 3 close to the blocking structure 4 during casting, and then cast into a whole for a second time, thereby forming a blocking structure 4 with excellent stability, which can support and resist the lateral earth pressure of backfill soil and drainage gravel.
[0020] A gravel drainage layer 5 is provided at one end of the sealing structure 4 away from the drainage tunnel 3. The gravel drainage layer 5 is located at the bottom of the gully channel 1. The width and height of the gravel drainage layer 5 are not less than the size of the drainage tunnel 3, and can effectively filter and guide the leakage water. A backfill soil layer is laid on the top of the gravel drainage layer relative to the inner side of the gully channel.
[0021] like Figure 3 As shown, the blocking structure 4 includes a concrete block 41. The concrete block 41 is provided with a plurality of diversion holes 42 along the axial direction of the drainage tunnel 3. The diameter and spacing of the reserved diversion holes 42 can be flexibly adjusted according to the scale of the gully channel. Generally, the diameter of the diversion holes should be 20 to 40 cm, and the spacing should not be less than 20 cm. This can avoid the potential threat of excessive leakage to the structure and ensure the unobstructed drainage system. The diversion holes 42 penetrate the concrete block 41, and an anti-filtration blocking structure is provided in the diversion holes 42.
[0022] like Figure 4 As shown, the anti-filtration blocking structure includes a circular tubular plastic blind pipe 6, which is fitted with the inner wall of the diversion hole 42, and the interior of the circular tubular plastic blind pipe 6 is filled with drainage gravel b8. The circular tubular plastic blind pipe 6 is wrapped with a non-woven geotextile b7, which can prevent soil particles from entering the blind pipe, thereby achieving effective filtering and guiding of water.
[0023] like Figure 2 As shown, the gravel drainage layer 5 includes a non-woven geotextile a51. After the concrete strength of the drainage tunnel 3 and the blocking section reaches 75% of the design strength, the non-woven geotextile a51 is laid at the bottom of the gully channel 1 within 3 to 5 m from the front end of the inlet of the drainage tunnel 3. The non-woven geotextile a51 is in the shape of a bag, and the bag of the non-woven geotextile a51 is filled with drainage gravel a52, which can effectively filter and guide the leakage water.
[0024] The deep-buried drainage hole structure provided by the utility model has the following working principle: when in use, backfill soil needs to be filled into the top of the gravel drainage layer 5 relative to the gully channel 1 according to the design requirement of the gully backfill foundation surface height, and backfilled and compacted to form a backfill soil layer 2; soil particles in the backfill soil layer 2 are blocked at the top of the gravel drainage layer 5; the infiltrated water in the backfill soil layer 2 is filtered by the non-woven geotextile a51 and the drainage gravel a52, and enters the blocking structure 4; the infiltrated water passes through the non-woven geotextile b7 and enters the plastic conduit 6; the water is effectively filtered by the drainage gravel b8, and the remaining soil particles are blocked outside the blocking structure 4, and the infiltrated water is guided into the drainage tunnel 3 and discharged.
[0025] When the anti-filtration plugging structure is updated, the plastic conduit 6, the drainage gravel b8 inside the plastic conduit 6, and the non-woven geotextile b7 outside the plastic conduit 6 are dismantled and updated.
[0026] Example 1
[0027] The deep buried drainage hole structure proposed in this embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a gully channel 1, and a drainage tunnel 3 is opened on one side below the gully channel 1. The extension direction of the drainage tunnel 3 intersects with the extension direction of the gully channel 1 in space, and the axis of the drainage tunnel 3 and the bottom of the gully channel 1 form a slope of 1% to 2%.
[0028] A blocking structure 4 is provided at one end of the drainage tunnel 3 close to the gully channel 1. The blocking structure 4 and the drainage tunnel 3 are integrally cast with concrete, or dowel bars are reserved at the end of the drainage tunnel 3 close to the blocking section during casting, and then cast a second time to form a whole, thereby forming a blocking structure 4 with excellent stability.
[0029] A gravel drainage layer 5 is provided at one end of the sealing structure 4 away from the drainage tunnel 3. The gravel drainage layer 5 is located at the bottom of the gully channel 1 and can effectively filter and guide leaked water. A backfill soil layer 2 is laid on the top of the gravel drainage layer 5 relative to the inner side of the gully channel 1.
[0030] Example 2
[0031] The deep buried drainage hole structure proposed in this embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a gully channel 1, and a drainage tunnel 3 is opened on one side below the gully channel 1. The extension direction of the drainage tunnel 3 intersects with the extension direction of the gully channel 1 in space, and the axis of the drainage tunnel 3 and the bottom of the gully channel 1 form a slope of 1% to 2%.
[0032] A blocking structure 4 is provided at one end of the drainage tunnel 3 close to the gully channel 1. The blocking structure 4 and the drainage tunnel 3 are integrally cast with concrete, or dowel bars are reserved at the end of the drainage tunnel 3 close to the blocking section during casting, and then cast a second time to form a whole, thereby forming a blocking structure 4 with excellent stability.
[0033] A gravel drainage layer 5 is provided at one end of the sealing structure 4 away from the drainage tunnel 3. The gravel drainage layer 5 is located at the bottom of the gully channel 1 and can effectively filter and guide leaked water. A backfill soil layer 2 is laid on the top of the gravel drainage layer 5 relative to the inner side of the gully channel 1.
[0034] like Figure 3 As shown, the plugging structure 4 includes a concrete block 41 , and the concrete block 41 is provided with a plurality of diversion holes 42 along the axial direction of the drainage tunnel 3 . The diversion holes 42 penetrate the concrete block 41 , and an anti-filtration plugging structure is provided in the diversion holes 42 .
[0035] like Figure 4As shown, the anti-filtration blocking structure includes a circular tubular plastic blind pipe 6, which is fitted with the inner wall of the diversion hole 42, and the interior of the circular tubular plastic blind pipe 6 is filled with drainage gravel b8. The circular tubular plastic blind pipe 6 is wrapped with a non-woven geotextile b7, which can prevent soil particles from entering the blind pipe, thereby achieving effective filtering and guiding of water.
[0036] Example 3
[0037] The deep buried drainage hole structure proposed in this embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a gully channel 1, and a drainage tunnel 3 is opened on one side below the gully channel 1. The extension direction of the drainage tunnel 3 intersects with the extension direction of the gully channel 1 in space, and the axis of the drainage tunnel 3 and the bottom of the gully channel 1 form a slope of 1% to 2%.
[0038] A blocking structure 4 is provided at one end of the drainage tunnel 3 close to the gully channel 1. The blocking structure 4 and the drainage tunnel 3 are integrally cast with concrete, or dowel bars are reserved at the end of the drainage tunnel 3 close to the blocking section during casting, and then cast a second time to form a whole, thereby forming a blocking structure 4 with excellent stability.
[0039] A gravel drainage layer 5 is provided at one end of the sealing structure 4 away from the drainage tunnel 3. The gravel drainage layer 5 is located at the bottom of the gully channel 1 and can effectively filter and guide leaked water. A backfill soil layer 2 is laid on the top of the gravel drainage layer 5 relative to the inner side of the gully channel 1.
[0040] like Figure 3 As shown, the plugging structure 4 includes a concrete block 41 , and the concrete block 41 is provided with a plurality of diversion holes 42 along the axial direction of the drainage tunnel 3 . The diversion holes 42 penetrate the concrete block 41 , and an anti-filtration plugging structure is provided in the diversion holes 42 .
[0041] like Figure 4 As shown, the anti-filtration blocking structure includes a circular tubular plastic blind pipe 6, which is fitted with the inner wall of the diversion hole 42, and the interior of the circular tubular plastic blind pipe 6 is filled with drainage gravel b8. The circular tubular plastic blind pipe 6 is wrapped with a non-woven geotextile b7, which can prevent soil particles from entering the blind pipe, thereby achieving effective filtering and guiding of water.
[0042] like Figure 2 As shown, the gravel drainage layer 5 includes a non-woven geotextile a51, which is in the shape of a bag. The bag of the non-woven geotextile a51 is filled with drainage gravel a52, which can effectively filter and guide the leakage water.
Claims
1. Deep buried drainage hole structure, characterized in that: The invention comprises a gully channel (1), wherein a drainage tunnel (3) is provided on one side below the gully channel (1), wherein the extension direction of the drainage tunnel (3) intersects with the extension direction of the gully channel (1) in space, wherein the axis of the drainage tunnel (3) and the bottom of the gully channel (1) form a slope of 1% to 2%, wherein a blocking structure (4) is provided at one end of the drainage tunnel (3) close to the gully channel (1), wherein a crushed stone drainage layer (5) is provided at one end of the blocking structure (4) away from the drainage tunnel (3), wherein the crushed stone drainage layer (5) is located at the bottom of the gully channel (1), and a backfill soil layer (2) is laid on the top of the crushed stone drainage layer (5) relative to the inner side of the gully channel (1).
2. The deep buried drainage hole structure according to claim 1 is characterized in that: The plugging structure (4) comprises a concrete block (41), the concrete block (41) is provided with a plurality of diversion holes (42) along the axial direction of the drainage tunnel (3), and a reverse filtration plugging structure is provided in the diversion hole (42).
3. The deep buried drainage hole structure according to claim 2 is characterized in that: The reverse filtration plugging structure comprises a circular tubular plastic blind pipe (6), the circular tubular plastic blind pipe (6) is fitted with the inner wall of the diversion hole (42), and the interior of the circular tubular plastic blind pipe (6) is filled with drainage gravel b (8).
4. The deep buried drainage hole structure according to claim 3 is characterized in that: The circular plastic blind tube (6) is wrapped with a non-woven geotextile b (7).
5. The deep buried drainage hole structure according to claim 1, characterized in that: The gravel drainage layer (5) comprises a non-woven geotextile a (51), wherein the non-woven geotextile a (51) is in the shape of a bag, and the bag of the non-woven geotextile a (51) is filled with drainage gravel a (52).
6. The deep buried drainage hole structure according to claim 1, characterized in that: The drainage tunnel (3) and the blocking structure (4) are integrally cast with concrete.