CN210507326U - Cut and lead ecological escape canal of type - Google Patents
Cut and lead ecological escape canal of type Download PDFInfo
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- CN210507326U CN210507326U CN201921301370.3U CN201921301370U CN210507326U CN 210507326 U CN210507326 U CN 210507326U CN 201921301370 U CN201921301370 U CN 201921301370U CN 210507326 U CN210507326 U CN 210507326U
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- drainage ditch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model relates to a cutting and guiding type ecological drainage ditch, which is characterized in that a drainage ditch (10) is excavated in an area where underground water undercurrent is relatively developed, and a pebble cushion layer (4) and geotextile (7) are laid at the bottom of the drainage ditch (10); one side of the first side slope (11) is provided with a precast concrete filter plate (6), the other side of the second side slope (12) is provided with a precast concrete plate (9), and the slope feet of the first side slope (11) and the second side slope (12) are provided with concrete tooth walls (8); the grass planting brick (2) that permeates water is laid to first side slope (11) bank top one side in escape canal (10) to grass planting (1), coarse sand bed course (3), cobble bed course (4) in laying under the brick of grass planting brick (2) permeates water, lay two-layer plastics blind pipe (5) under cobble bed course (4), geotechnological cloth is wrapped up in to plastics blind pipe (5), and plastics blind pipe (5) vertical drainage ditch (10) direction is laid, to escape canal lopsidedness. The utility model discloses can with rain and flood and groundwater high efficiency, discharge into in the river course rapidly.
Description
Technical Field
The utility model relates to a soil and water conservation and drainage waterlogging technical field, this kind of neotype is cut and is led type ecological escape canal can cut earth's surface rainfall flood runoff and partial groundwater undercurrent and lead and get into the ditch in, combine engineering measures such as low reaches drainage pump station, improve drainage waterlogging efficiency. The escape canal function of this form is: one side of the ditch can guide the surface runoff into the ditch and also can intercept the underground water underflow into the ditch, and the other side of the ditch only can guide the surface runoff into the ditch. The drainage ditch is suitable for areas where underground water undercurrent is relatively developed, particularly areas where the pavement on one side of the drainage ditch is hardened and the other side of the drainage ditch is in a natural landform, such as drainage of waterlogging on the side of an expressway.
Background
The traditional drainage ditch is mostly a soil ditch or adopts stone masonry for slope protection, the soil ditch is easy to collapse when running for a long time, and the siltation is serious; the stone masonry revetment is not easy to adopt mechanized construction, the construction quality is difficult to control, the manufacturing cost is relatively high, underground water outside the revetment is difficult to guide into the ditch, and underground water exchange is not facilitated. The ecological drainage ditch is different from the traditional drainage ditch, is a ground drainage channel which is protected by adopting plant measures or combining plant measures with engineering measures at the ditch bottom and the ditch wall, and has low manufacturing cost, good landscape effect and high ecological benefit. The intercepting and guiding type ecological drainage ditch is a novel type ecological drainage ditch, not only has the landscape of a common ecological drainage ditch and the functions of filtering and purifying surface rainfall flood runoff, but also can intercept underground water underflow, guide the underground water underflow and discharge the underground water overflow, and can effectively reduce the groundwater level.
Disclosure of Invention
The utility model aims at inventing the escape canal of novel structure, this escape canal can cut off surface runoff and groundwater undercurrent and lead into the ditch for in the engineering measure of soil and water conservation and drainage waterlogging technical field. Its innovation point lies in using the combination of filter plate bank protection and blind pipe water conservancy diversion, and when the surface runoff was catched into the escape canal, the groundwater undercurrent can also be intercepted to the filter plate bank protection, leads to the escape canal with partial undercurrent. The longitudinal gradient of the drainage ditch is properly increased, and rain flood and underground water are efficiently and quickly drained into a river channel by combining a downstream drainage pumping station, so that the problem of secondary salinization of soil is relieved.
The structure for realizing this function is such that: the utility model provides a cut and lead type ecological escape canal which characterized in that: in an area where underground water undercurrent is relatively developed, a drainage ditch is excavated, the terminal of the drainage ditch is connected with a drainage river channel, the depth of the drainage ditch is determined according to the development condition of the local underground water undercurrent, and a pebble cushion layer and geotechnical cloth are paved at the bottom of the drainage ditch; one side of the first slope revetment is provided with a precast concrete filter plate, the other side of the second slope revetment is provided with a precast concrete plate, and slope feet of the first slope and the second slope are provided with concrete tooth walls; paving water-permeable grass planting bricks on one side of the top of the first side slope of the drainage ditch, planting grass, and planting grass on one side of the top of the second side slope on the other side; the medium coarse sand cushion layer and the pebble cushion layer are laid under the bricks of the permeable grass planting bricks, two layers of plastic blind pipes are laid under the pebble cushion layer, geotechnical cloth is wrapped outside the plastic blind pipes, the plastic blind pipes are laid in the direction perpendicular to the drainage ditch, the plastic blind pipes are arranged in a plum blossom shape and incline to one side of the drainage ditch. The drainage ditch adopts concrete filter plate bank protection, and the optional 2cm in filtration pore diameter, side slope should satisfy stable requirement, and the toe sets up the gecko, and the ditch bottom is laid cobble layer and geotechnological cloth. Section form: firstly, a trapezoidal section; second, compound cross section. The structure is as follows: one side is paved with a plastic blind pipe and a lining filter plate, and the other side is lined with a concrete slab, so that the drainage ditch is suitable for an area that one side guides surface runoff into the ditch and also intercepts underground water underflow into the ditch, and the other side only guides the surface runoff into the ditch.
In order to accelerate the drainage speed of the waterlogged water, the longitudinal gradient of the bottom of the drainage ditch can be increased as much as possible under the condition of meeting the requirement of no flushing and no silting. The section size should satisfy the overcurrent requirement. The overflow is the sum of the surface runoff and the groundwater underflow entering the ditch, as shown in fig. 1 and 2.
Q=Qs+Qg1
A=Q/v
In the formula:Qflow of drainage ditch, m3/s；
QsSurface water runoff, m3/s；
Qg1Subsurface water underflow flow into a trench, m3/s；
AWater cross-sectional area of drainage ditch, m2；
v-flow velocity in m/s in the gutters.
The utility model discloses its innovation point lies in using the combination of filter plate bank protection and blind pipe water conservancy diversion, and when the drainage ditch was remitted to the surface runoff, the filter plate bank protection can also intercept groundwater undercurrent, with the leading-in drainage ditch of part undercurrent. The longitudinal gradient of the drainage ditch is properly increased, and rain flood and underground water are efficiently and quickly drained into a river channel by combining a downstream drainage pumping station, so that the problem of secondary salinization of soil is relieved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the convergence of the present invention;
fig. 3 is a schematic view of the cross-section of the present invention.
In the figure, 1, planting grass; 2. permeable grass planting bricks; 3. a medium coarse sand cushion layer; 4. a pebble cushion layer; 5. a plastic blind pipe; 6. prefabricating a concrete filter plate; 7. geotextile; 8. concrete tooth walls; 9. precast concrete slab, 10, drainage ditch, 11, first side slope, 12, second side slope, 13, groundwater underflow Q g1,14. Surface water runoff Q s，15. Undercurrent zone, 16, water level.
The specific implementation mode is as follows:
the embodiments are such with reference to the accompanying drawings: the utility model provides a cut and lead type ecological escape canal which characterized in that: in an area where underground water undercurrent is relatively developed, a drainage ditch 10 is excavated, the terminal of the drainage ditch 10 is connected with a drainage river channel, the depth of the drainage ditch 10 is determined according to the development condition of the local underground water undercurrent, and a pebble cushion layer 4 and geotextile 7 are laid at the bottom of the drainage ditch 10; one side of a first side slope 11 is provided with a precast concrete filter plate 6, the other side of a second side slope 12 is provided with a precast concrete plate 9, and the slope feet of the first side slope 11 and the second side slope 12 are provided with concrete tooth walls 8; paving water-permeable grass planting bricks 2 on one side of the top of a first side slope 11 of the drainage ditch 10, planting grass 1, and planting grass 1 on one side of the top of a second side slope 12 on the other side; the medium coarse sand cushion layer 3 and the pebble cushion layer 4 are laid under the bricks of the permeable grass planting bricks 2, two layers of plastic blind pipes 5 are laid under the pebble cushion layer 4, the plastic blind pipes 5 are wrapped with geotextile, the plastic blind pipes 5 are laid in the direction perpendicular to the drainage ditch 10, and the plum blossom-shaped arrangement is inclined towards one side of the drainage ditch. The drainage ditch adopts concrete filter plate bank protection, and the optional 2cm in filtration pore diameter, side slope should satisfy stable requirement, and the toe sets up the gecko, and the ditch bottom is laid cobble layer and geotechnological cloth. Section form: firstly, a trapezoidal section; second, compound cross section. The structure is as follows: one side is paved with a plastic blind pipe and a lining filter plate, and the other side is lined with a concrete slab, so that the drainage ditch is suitable for an area that one side guides surface runoff into the ditch and also intercepts underground water underflow into the ditch, and the other side only guides the surface runoff into the ditch.
In order to accelerate the drainage speed of the waterlogged water, the longitudinal gradient of the bottom of the drainage ditch can be increased as much as possible under the condition of meeting the requirement of no flushing and no silting. The section size should satisfy the overcurrent requirement. The overflow is the sum of the surface runoff and the groundwater underflow entering the ditch, as shown in fig. 1 and 2.
=Qs+Qg1
A=Q/v
In the formula:Qflow of drainage ditch, m3/s；
QsSurface water runoff, m3/s；
Qg1Into trenchesSubsurface water underflow flow rate, m3/s；
AWater cross-sectional area of drainage ditch, m2；
v-flow velocity in m/s in the gutters.
The interception and guide type drainage ditch can intercept and guide surface runoff and underground water subsurface flow into the ditch. During rainfall, flood and rainwater retained on the earth surface seep downwards through the permeable grass planting bricks, are filtered by the medium-coarse sand layer and flow into the two layers of plastic blind pipes. The outside of the blind pipe is wrapped with geotextile, so that the blockage caused by the entering of soil and sand can be prevented. The two layers of blind pipes are vertically arranged in a plum blossom shape in the drainage ditch and are inclined towards the drainage ditch so as to ensure that the downward-seeped rainwater is guided into the ditch; meanwhile, high-water-level underground water is intercepted and flows into the ditch through the concrete filter plate slope protection.
Claims (3)
1. The utility model provides a cut and lead type ecological escape canal which characterized in that: in an area where underground water undercurrent is relatively developed, a drainage ditch (10) is excavated, the terminal of the drainage ditch (10) is connected with a drainage river channel, the depth of the drainage ditch (10) is determined according to the development condition of the local underground water undercurrent, and a pebble cushion layer (4) and geotextile (7) are laid at the bottom of the drainage ditch (10); one side of the first side slope (11) is provided with a precast concrete filter plate (6), the other side of the second side slope (12) is provided with a precast concrete plate (9), and the slope feet of the first side slope (11) and the second side slope (12) are provided with concrete tooth walls (8); paving water-permeable grass planting bricks (2) on one side of the top of the first side slope (11) of the drainage ditch (10), planting grass (1), and planting grass (1) on one side of the top of the second side slope (12) on the other side; coarse sand bed course (3), cobble bed course (4) in laying under the brick of grass planting brick (2) permeates water, lay two-layer plastics blind pipe (5) under cobble bed course (4), and geotechnological cloth is wrapped up in to plastics blind pipe (5), and plastics blind pipe (5) vertical drainage ditch (10) direction is laid, and the plum blossom form is arranged, to escape canal one side slope.
2. The intercepting-type ecological drain ditch according to claim 1, wherein: the aperture of the filtering hole of the precast concrete filtering plate (6) of the drainage ditch (10) is 1-3 cm.
3. The intercepting-type ecological drain ditch according to claim 1, wherein: the section size of the drainage ditch (10) should meet the overflow requirement, the overflow is the sum of the surface runoff and the groundwater underflow entering the ditch, and the calculation formula is as follows:
Q=Qs+Qg1
A=Q/v
in the formula:Qflow of drainage ditch, m3/s；
QsSurface water runoff, m3/s；
Qg1Subsurface water underflow flow into a trench, m3/s；
AWater cross-sectional area of drainage ditch, m2；
v-flow velocity in m/s in the gutters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921301370.3U CN210507326U (en) | 2019-08-13 | 2019-08-13 | Cut and lead ecological escape canal of type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921301370.3U CN210507326U (en) | 2019-08-13 | 2019-08-13 | Cut and lead ecological escape canal of type |
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| Publication Number | Publication Date |
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| CN210507326U true CN210507326U (en) | 2020-05-12 |
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| CN201921301370.3U Active CN210507326U (en) | 2019-08-13 | 2019-08-13 | Cut and lead ecological escape canal of type |
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| CN (1) | CN210507326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396990A (en) * | 2019-08-13 | 2019-11-01 | 山东省水利科学研究院 | One kind cutting conductivity type eco-drainage ditch |
-
2019
- 2019-08-13 CN CN201921301370.3U patent/CN210507326U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396990A (en) * | 2019-08-13 | 2019-11-01 | 山东省水利科学研究院 | One kind cutting conductivity type eco-drainage ditch |
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