CN211816304U

CN211816304U - Rainwater leaching caching and utilizing structure based on fertilizer tank

Info

Publication number: CN211816304U
Application number: CN201922239969.5U
Authority: CN
Inventors: 何寿迎; 张志华; 王殿斌; 姜德鸿; 展昀; 闫强刚; 董成祥
Original assignee: QINGDAO INSTITUTE OF SURVEYING AND MAPPING SURVEY
Current assignee: QINGDAO INSTITUTE OF SURVEYING AND MAPPING SURVEY
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-10-30
Anticipated expiration: 2029-12-13

Abstract

The utility model belongs to the technical field of underground drainage facility, a rainwater leaching storage and utilize structure based on fertile groove is related to. The utility model provides a rainwater leaching buffer memory and utilize structure based on fertile groove, includes: the compacted backfill layer, the clay water-blocking layer, the broken stone water-storing layer and the planting soil layer are sequentially arranged in the fertilizer groove from bottom to top; vertical gravel percolation pipes are arranged in the gravel water storage layer and the planting soil layer; and a ground surface permeable layer is laid on the top of the gravel infiltration pipe. The utility model discloses a buffer memory and utilize structure are leached to rainwater based on fertile groove utilizes waterproof geomembrane water barrier and clay water barrier as double-deck water proof measure, prevents that the rainwater from infiltrating to the fertile groove below of foundation ditch. The water stored in the macadam water storage layer can be used as irrigation water or domestic sanitary water for residents to design green plants, and the purposes of saving energy, reducing emission and reducing drinking water consumption can be achieved.

Description

Rainwater leaching caching and utilizing structure based on fertilizer tank

Technical Field

The utility model belongs to the technical field of underground drainage facility, a rainwater leaching storage and utilize structure based on fertile groove is related to.

Background

Along with the construction of cities, the large-area implementation of ground hardening, rainwater is difficult to infiltrate into the soil layer in rainy season, thereby rapidly collecting and forming urban waterlogging. At present, the construction of sponge cities enables cities to have water storage capacity, and has positive construction significance for relieving urban waterlogging. The building such as residential area, office building is as the main component part in city, if at the construction in-process, lets the building have the rainwater and absorbs the sponge effect that the ability will promote the city greatly, reduces the emergence of urban waterlogging.

At present, a large number of basements are built in most buildings, and when the basements are built, if a fertilizer tank formed by an excavated foundation pit has rainwater absorbing capacity, a large number of precipitation in a cell range can be absorbed in a short time, so that the collection of rainwater is favorably delayed.

Current china utility model patent 208009393U discloses a foundation fertile groove backfill structure of non-permeating water based on sponge city, including the stratum of non-permeating water, the stratum of non-permeating water is provided with excavation supporting and puts the slope, the stratum upper end of non-permeating water is provided with the main part bottom plate, the main part bottom plate right-hand member is provided with the major structure post, the space that the excavation supporting of major structure post and non-permeating water stratum put between the slope has set gradually first muck layer and second muck layer from under from last, the second muck layer is provided with a plurality of rainwater storage infiltration devices that communicate each other, second muck layer top is provided with rainwater filtration collector, rainwater storage infiltration devices communicates each other through connecting tube and rainwater filtration collector, rainwater filtration collector top is provided with the layer of permeating water. The base of the fertilizer groove is provided with a blind ditch for draining leaked rainwater and discharging the rainwater out of the fertilizer groove. The defects and shortcomings of the patent are: the rainwater filter collectors are buried in the soil layer of the fertilizer groove, the collectors are easy to break under the soil pressure, the rainwater filter collectors have the advantages of being difficult to maintain and high in construction cost, the blind ditch is arranged on the base to guide water, automatic drainage is difficult to achieve through a water guide path, the underground water level is prone to being lifted, and therefore the safety of a basement is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides a rainwater leaching buffer memory and utilize structure based on fertile groove. The utility model discloses be suitable for the building within range to have stable aquifer, and have the basement of stabilizing the water barrier.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a rainwater leaching buffer memory and utilize structure based on fertile groove, includes: the compacted backfill layer, the clay water-blocking layer, the broken stone water-storing layer and the planting soil layer are sequentially arranged in the fertilizer groove from bottom to top; broken stone percolation pipes are arranged in the broken stone water storage layer and the planting soil layer; and a ground surface permeable layer is laid on the top of the gravel infiltration pipe.

Further preferably, an impermeable water-proof layer is laid between the clay water-proof layer and the gravel water-storage layer.

Further preferably, the impermeable water-resisting layer is an impermeable geomembrane.

Preferably, the gravel water storage layer is formed by compacting gravel with the diameter of 1-3 cm.

Further preferably, the gravel infiltration pipe is formed by vertically compacting gravel.

Further preferably, the thickness of the clay water-blocking layer is 1-1.5 m.

Further preferably, the surface water permeable layer is composed of water permeable bricks or sand-free concrete.

The utility model discloses a buffer memory and utilize structure are leached to rainwater based on fertile groove utilizes waterproof geomembrane water barrier and clay water barrier as double-deck water proof measure, prevents that the rainwater from infiltrating to the fertile groove below of foundation ditch. If there is a small amount of rainwater when oozing to fertile groove below, the rainwater can get into and stabilize the aquifer, because the better and stable water level of keeping of the water permeability of stabilizing the aquifer, a small amount of rainwater oozes down to stabilize the aquifer and can not influence and stabilize the water level and rise, can not influence the anti design of floating and the anti measure of floating of basement. The water stored in the macadam water storage layer can be used as irrigation water or domestic sanitary water for residents to design green plants, and the purposes of saving energy, reducing emission and reducing drinking water consumption can be achieved.

Drawings

FIG. 1 is a schematic longitudinal section of the embodiment of the present invention showing the structure of the basement and the rainwater leaching buffer and utilization structure based on the fertilizer trough;

fig. 2 is a sectional view taken along line a-a in fig. 1.

In the figure: 1. a soil layer; 2. a clay water barrier layer; 3. stabilizing the water level of the aquifer; 4. stabilizing the aqueous layer; 5. a basement; 6. a foundation pit supporting structure; 7. compacting the backfill layer; 11. a ground surface permeable layer; 12. planting a soil layer; 13. a vertical gravel infiltration pipe; 14. a water-bearing stratum of crushed stone; 15. a clay water-blocking layer; 16. a water impermeable geomembrane barrier.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The rainwater leaching buffer memory and the utilization structure based on fertile groove that this embodiment provided include that the from the bottom up that sets up in fertile groove is in proper order: the soil-water-resistant soil-film water-resistant soil-layer soil-planting layer comprises a compacted backfill layer 7, a clay water-resistant layer 15, a water-resistant geomembrane water-resistant layer 16, a macadam. Wherein, vertical compacted gravel percolation pipes 13 are arranged in the gravel water storage layer 14 and the planting soil layer 12. And a ground surface permeable layer 11 consisting of permeable bricks or non-sand concrete is laid on the top of the gravel infiltration pipe 13.

The construction steps of the rainwater leaching buffer and utilization structure based on the fertilizer tank of the embodiment are as follows:

when basement 5 excavates to the basement, adopt foundation ditch supporting construction 6 to strut peripheral soil layer 1, clay water barrier 2, stable aquifer 4, form the fertile groove of foundation ditch between basement 5 and foundation ditch supporting construction 6. And when the foundation pit fertilizer groove is backfilled, conventional compaction backfilling is adopted for the position below the stable aquifer 4 to form a compaction backfilling layer 7. And after backfilling to the top elevation of the stable aquifer 4, backfilling from clay from the bottom elevation of the clay water-resisting layer 2 by clay, wherein the backfilling thickness is about 1-1.5 m to form a clay water-resisting layer 15, paving an impermeable geomembrane water-resisting layer 16 on the upper part of the clay water-resisting layer 15, and paving a crushed stone water-storing layer 14, wherein the crushed stone water-storing layer 14 is compacted crushed stone with the size of 1-3 cm. The upper part of the gravel aquifer 14 is backfilled with a planting soil layer 12 for plant growth. And a vertical gravel percolation pipe 13 is arranged in the middle of the backfilled planting soil layer 12, and the gravel percolation pipe 13 is composed of vertical compacted gravel. And a ground surface permeable layer 11 consisting of permeable bricks or non-sand concrete is laid on the top of the gravel infiltration pipe 13.

When precipitation is present, rain water can leach into the gravel aquifer 14 through the planting soil layer 12 or the gravel percolation pipe 13. Rainwater is temporarily stored in the gravel water storage layer 14, and the rainwater on the gravel water storage layer 14 can be taken out by a property unit for greening irrigation and the like. The impervious geomembrane water-stop layer 16 and the clay water-stop layer 15 prevent rainwater from infiltrating downwards, and adverse effects such as rise of basement water level and the like caused by rainwater infiltration are avoided.

The utility model discloses a buffer memory and utilize structure are leached to rainwater based on fertile groove utilizes the upper portion space that lies in stable ground water level in the fertile groove of foundation ditch, sets up certain thickness and continuous metalling and receives storage space as the rainwater. The volume of the crushed stone water storage layer of each meter of the fertilizer tank is 4.5m calculated according to the width of the fertilizer tank being 1.5 m and the height being 3 m³If the porosity is 20%, the water storage layer of the crushed stone in the fertilizer tank can hold 0.9 m per linear meter³. Taking a basement with 100m length and width positions as an example, when the section of the crushed stone water storage layer of the fertilizer tank is 4.5m²In time, can store water 360 m³At a thickness of 100mmFor example, precipitation in the basement is 1000m³The water storage layer of the gravels can absorb 36 percent of precipitation. The gravel water storage layer can favorably slow down the collection of rainwater and reduce the urban drainage pressure.

Claims

1. The utility model provides a rainwater leaching buffer memory and utilize structure based on fertile groove, its characterized in that includes: the compacted backfill layer, the clay water-blocking layer, the broken stone water-storing layer and the planting soil layer are sequentially arranged in the fertilizer groove from bottom to top; vertical gravel percolation pipes are arranged in the gravel water storage layer and the planting soil layer; and a ground surface permeable layer is laid on the top of the gravel infiltration pipe.

2. The structure of claim 1, wherein a water-tight and water-proof layer is laid between the clay water-proof layer and the gravel water-proof layer.

3. The manure pit-based rainwater leaching buffering and utilization structure according to claim 2, wherein the impermeable water-resisting layer is an impermeable geomembrane.

4. The rainwater leaching and caching and utilizing structure based on the fertilizer trough of claim 1, wherein the gravel water storage layer is formed by compacting 1-3 cm-sized gravel.

5. The rainwater leaching, caching and utilizing structure based on the fertilizer trough of claim 1, wherein the gravel infiltration pipe is formed by vertically compacting gravel.

6. The rainwater leaching, buffering and utilizing structure based on fertilizer trough of claim 1, wherein the clay water-blocking layer is 1-1.5 m thick.

7. The structure for storing and utilizing rainwater leaching based on fertilizer tanks according to claim 1, characterized in that the ground surface permeable layer is composed of permeable bricks or sand-free concrete.