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Multi-stage purification type grass planting ditch special for green sponge and construction method thereof

A grass-planting ditch and stage purification technology, which is applied to the multi-stage purification grass-planting ditch for green sponge and its construction field, can solve the problems that the grass-planting ditch cannot be purified at the same time, the grass-planting ditch cannot be discharged quickly, and the cost of excessive rainwater is high, so as to prolong the surface runoff The effect of length, quick and easy construction, and simple structure

Active Publication Date: 2021-03-02
JIANGSU LONG LEAPING ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-stage purification type grass-planting ditch dedicated to green sponge, which is used to solve the technical problems that the traditional grass-planting ditch cannot purify the grass-planting ditch and seepage rainwater at the same time, and cannot quickly discharge excess rainwater, and the technical problems of complex construction and high cost

Method used

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  • Multi-stage purification type grass planting ditch special for green sponge and construction method thereof
  • Multi-stage purification type grass planting ditch special for green sponge and construction method thereof
  • Multi-stage purification type grass planting ditch special for green sponge and construction method thereof

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Embodiment 1

[0053] like figure 1 and figure 2 As shown, the first filter area includes planting soil layer 15 , sand layer 16 and zeolite layer 17 sequentially from top to bottom, and the base 112 of the baffle plate 11 is buried in the zeolite layer 17 . Rainwater in urban roads according to figure 1 The arrow below indicates that it enters the grass planting ditch, and the water in the infiltration part enters the inside of the baffle plate 11 after being filtered by the above three layers, and finally the relatively clean water flows from the Figure 4 The water collection pipe 22 is shown entering the city drain.

[0054] Further, in a specific embodiment of the present invention, the second filter area includes multiple, and different second filter areas have different particle sizes according to the order in which the water flows through. diameter from thick to thin. Because the water flow in the water flow area has a certain route, along with the flow of the water flow, the wa...

Embodiment 2

[0063] A construction method for a multi-stage purification type grass-planting ditch dedicated to green sponges, comprising the following steps:

[0064] Step 1. Dig a trapezoidal ditch with a wide top and a narrow bottom on both sides of the road in the area to be constructed, clear the bottom and compact it, and install a water collection pipe 22 at the bottom of the ditch near the outflow area 2;

[0065] Step 2: Spread a layer of zeolite on the surface of the tamped ditch bottom, then place the base 112 of the baffle 11 on the zeolite, and use a water stop to adhere the baffle 11 and the baffle 11 to form a water flow channel 1, Then spread a layer of zeolite on the base 112, so that the base 112 of the baffle plate 11 is pressed in the zeolite layer 17; a sand layer 16 is laid on the zeolite foundation, and a water-permeable geotextile is used between the two to separate; the sand layer 16 Lay planting soil layer 15 on the basis to plant turf; form infiltration zone and ...

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Abstract

The invention provides a multi-stage purification type grass planting ditch special for green sponge and a construction method thereof. The grass planting ditch is divided into an upper water flow area and a lower infiltration area through vegetation; the infiltration area is a first filtering area which is vertically distributed; baffles and second filtering areas are further arranged in the water flow area, and the baffles are matched with the wall of the grass planting ditch to divide the grass planting ditch into a plurality of water flow channels in the width direction; the second filtering areas are arranged at the end-to-end joints of every two water flow channels; the outlet of a flow channel is disposed at an outflow area, and an overflow wall is arranged between the water flow channel closest to the road surface and the outflow area to separate the water flow channel from the outflow area; each baffle comprises a base and a partition plate, the base is buried in the infiltration area, and the partition plate is exposed to the top of the water flow area; the baffle is hollow overall, permeation holes are formed in the surface of the base and are communicated with the interior of the baffle; a water collecting pipe is further arranged in the infiltration area and located below the outflow area, and the water collecting pipe is buried in a position equivalent to or lowerthan the height of the base of the baffle.

Description

technical field [0001] The invention relates to sponge city technology, in particular to a multi-stage purification grass-planting ditch dedicated to green sponges and a construction method thereof. Background technique [0002] With the development of urbanization, the number of impermeable roads in cities increases, which is prone to urban waterlogging and excessive peak runoff. At the same time, rainwater runoff carries a large amount of pollutants into the municipal pipe network and increases the downstream organic matter load. Therefore, the construction of sponge cities is of great significance. [0003] Grass-planting ditches refer to surface ditches planted with vegetation, which are suitable for the surrounding areas of impermeable surfaces such as roads, squares, parking lots, urban roads and urban green spaces, and can also be used as pretreatment for low-impact development facilities such as bioretention facilities and wet ponds facility. Grass planting ditches ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14E03F3/04E03F3/06E03F3/02
CPCC02F1/001C02F3/32E03F3/04E03F3/06E03F3/02C02F2103/001
Inventor 宗媛张瑞斌刘清泉李澄周乃周舟王乐阳李婧
Owner JIANGSU LONG LEAPING ENG DESIGN
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