CN101775839B - Rainwater penetrating-discharging integrated ecological system - Google Patents

Abstract

A rainwater infiltration-drainage integrated ecological system, including seepage inspection wells distributed on the ground of the building area, seepage drainage ditches connected to each seepage inspection well in a network, and horizontal connecting pipes between the two, the seepage inspection wells Permeable holes are distributed on the side wall and bottom surface, and a gravel layer is laid on the periphery of the seepage inspection well, and a layer of permeable geotextile is laid on the periphery of the gravel layer. The wellhead of the seepage inspection well is equipped with a trash interception basket, and the wellhead is covered with a permeable well cover. The side wall of the permeable drainage ditch is distributed with permeable holes, a gravel layer is laid on the periphery of the permeable drainage ditch, a layer of permeable geotextile is laid on the periphery of the gravel layer, and the top of the permeable drainage ditch is covered with a drainage ditch grate cover. The design principle of the invention is simple, the construction is convenient, water can be saved, urban rainwater runoff can be reduced, and municipal drainage pressure can be relieved. It can not only realize the initial interception of rainwater, purify water quality, but also realize the infiltration of rainwater, conserve underground water sources and beautify the surrounding ecological environment. .

Description

Rainwater infiltration-discharge integrated ecosystem

technical field

The invention relates to a system for utilizing rainwater resources, in particular to a system for utilizing rainwater resources in building quarters.

Background technique

In cities, rainwater falling on the ground or roofs is directly discharged to the municipal drainage pipe network through the rainwater grates on the ground or the gutters on the ground, which increases the runoff of rainwater in the city and increases the drainage pressure of the municipal pipe network. Especially in today's large-scale demolition and reconstruction of cities and the construction climax of a large number of new residential areas, many new residential areas need to lay deep-buried rainwater pipes and connect them with the existing municipal drainage network, which increases the existing municipal drainage network. load. On the other hand, because most of the rainwater fails to return to the ground, the groundwater level in the city has been greatly reduced year by year. The reduction of groundwater sources has made the city a dry island and deteriorated the ecological environment of the city.

At present, some solutions to this problem are to establish rainwater collection ponds and non-permeable rainwater collection pipe networks in the building area, and the collected rainwater will be recharged to the ground as water for landscaping in the community after sedimentation and filtration, but in order to achieve smooth drainage In order to reduce the effect of water seepage and prevent pipe network blockage, more rainwater inspection wells should be installed on the ground, and the wells should be connected with shorter pipes. However, too many rainwater inspection wells will not only increase the cost of infrastructure in the community, Moreover, it will affect the landscape effect of the ground, and direct connection with pipes will cause a large rainfall load in the pool, and it will not be able to achieve a good infiltration effect. What's more, when there is a sudden heavy rain, due to the poor drainage in a short period of time, a large amount of rainwater and road debris will pour into the rainwater outlet, which will easily cause the rainwater outlet to be blocked and the local low-lying land to be too deep. Cause regional traffic paralysis, and even regional rain and flood disasters. To sum up, the existing methods generally only use the means of complete discharge or complete recovery of rainwater or partial infiltration and utilization. There is no mature rainwater infiltration-discharge integrated system, and this problem needs to be solved urgently.

Contents of the invention

The purpose of the present invention is to provide a rainwater infiltration-drainage integrated ecological system to solve the existing technical problems of rainwater infiltration, unreasonable structure of the drainage system and poor infiltration effect.

To achieve the above object, the present invention adopts the following technical solutions:

This rainwater infiltration-drainage integrated ecosystem includes seepage inspection wells distributed on the ground of the building area, seepage drainage ditches connected to each seepage inspection well in a network, and horizontal connecting pipes between the two. Permeable holes are distributed on the side wall and bottom surface, and a gravel layer is laid on the periphery of the seepage inspection well, and a layer of permeable geotextile is laid on the periphery of the gravel layer. The wellhead of the seepage inspection well is equipped with a trash interception basket, and the wellhead is covered with a permeable well cover. The side wall of the permeable drainage ditch is distributed with water permeable holes, the periphery of the permeable drainage ditch is laid with a gravel layer, the periphery of the gravel layer is laid with a layer of permeable geotextile, the top of the permeable drainage ditch is covered with a drainage ditch grate cover, and the drainage ditch grate cover and The ground is level.

The laying slope of the seepage drainage ditch between the adjacent seepage inspection wells is 0.01-0.02, and the laying gradient of each seepage inspection well is from high to low.

The seepage inspection well at the lowest laying slope is connected with the municipal drainage pipe network or the rainwater collection tank by the drainage pipe.

Both the seepage inspection well and the seepage drain are made of resin concrete.

The opening diameter of the permeable holes on the seepage inspection well and the seepage drainage ditch is 8-10 mm, and the opening rate is 1.5-3%.

A layer of permeable geotextile is laid between the periphery of the seepage inspection well and the seepage drainage ditch and the gravel layer.

The horizontal connecting pipe is a plastic pipe made of HDPE, and the connection between the horizontal connecting pipe and the side wall of the seepage inspection well and the seepage drainage ditch is provided with a reinforcing plate.

The cross-section of the permeable drainage ditch is U-shaped, with a width of 100-600mm. The corners of the bottom of the permeable drainage ditch are provided with brackets, and the length of each drainage grate cover is 600-1000mm. `` ``

The dirt-blocking basket is made of stainless steel, and the outer periphery of the dirt-blocking basket is covered with non-woven geotextile.

The trash basket is funnel-shaped, and water-permeable channels are distributed on its side walls.

Compared with the prior art, the present invention has the following characteristics and beneficial effects:

The rainwater utilization of the present invention has multiple functions such as saving water and alleviating water resource crisis, increasing groundwater content through rainwater infiltration, improving regional ecological environment, reducing and slowing down rainwater discharge, and reducing urban rainstorm and flood disasters. The invention discharges the rainwater falling on the ground or the roof to the rainwater infiltration-discharge integrated ecological system. The rainwater is stored and infiltrated through the infiltration drainage ditch and the infiltration inspection well, and a part of the water is infiltrated. Traditional rainwater pipes, rainwater outlets, and rainwater inspection wells use infiltration open trenches to collect and discharge rainwater, save ground rainwater outlets, and reduce the number of ground rainwater inspection wells, thereby improving the ground landscape effect of the building community. The traditional deep-buried rainwater pipes are reduced, which can reduce the difficulty of laying outdoor pipe networks. The seepage drainage ditch belongs to the ground drainage, which is convenient for cleaning and management, and avoids the harm caused by the blockage of traditional rainwater pipes. Both the seepage inspection well and the seepage drainage ditch are made of resin concrete, which has good water flow capacity and good ring stiffness, and also has a seepage function, which can play an initial role in filtering and purifying rainwater.

The design principle of the invention is simple, the construction is convenient, water can be saved, urban rainwater runoff can be reduced, and municipal drainage pressure can be relieved. It can not only realize the initial interception of rainwater, purify water quality, but also realize the infiltration of rainwater, conserve underground water sources and beautify the surrounding ecological environment. , It can also discharge excess rainwater normally, has the drainage function of conventional drainage pipes, and has the effect of killing three birds with one stone. It is a way and means to better utilize rainwater. The present invention is suitable for the rainwater utilization system of moderate-scale building quarters, and the whole system is a complete set of equipment products. In a specific project, the amount of rainwater infiltration, storage, discharge, and project scale must be calculated and determined according to the "Technical Specifications for Rainwater Utilization Engineering in Buildings and Residential Areas".

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of the longitudinal section of the present invention.

Fig. 2 is a structural schematic diagram of a cross section of the present invention.

Fig. 3 is a structural schematic diagram of a cross-section of a penetration detection well.

Fig. 4 is a structural schematic diagram of a permeable manhole cover.

Fig. 5 is a schematic structural view of the trash interception basket.

Figure 6 is a schematic diagram of the structure of the infiltration drainage ditch.

Reference signs: 1-seepage inspection well, 2-seepage drainage ditch, 3-transverse connecting pipe, 4-permeable hole, 5-gravel layer, 6-permeable geotextile, 7-permeable manhole cover, 8-drainage grate cover, 9-basket for intercepting dirt, 10-permeable channel, 11-reinforcing plate, 12-bottom support.

Detailed ways

The embodiment is shown in Figure 1 and Figure 2. This rainwater infiltration-drainage integrated ecosystem includes seepage inspection wells 1 distributed on the ground of the building area, seepage drainage ditches 2 connected to each seepage inspection well in a network, and both The horizontal connection pipe 3 between them, the side wall and the bottom surface of the penetration inspection well 1 are distributed with permeable holes 4, the periphery of the penetration inspection well is laid with a gravel layer 5, and the periphery of the gravel layer is laid with a layer of permeable geotextile 6. The wellhead of the well 1 is provided with a trash interceptor basket 9, and the wellhead is covered with a permeable manhole cover 7; the side wall of the permeable drainage ditch 2 is distributed with permeable holes, and a gravel layer is laid on the periphery of the permeable drainage ditch, and a gravel layer is laid on the periphery of the gravel layer. One layer of permeable geotextile, the top of the permeable drainage ditch is covered with a drainage ditch grate cover 8 flush with the ground.

The laying gradient of the seepage drainage ditches 2 between the adjacent seepage inspection wells is 0.01-0.02, and the laying gradient of each seepage inspection well is from high to low. The seepage inspection well 1 at the lowest laying slope is connected with the municipal drainage pipe network or the rainwater collection tank by the drainage pipe.

Both the seepage inspection well 1 and the seepage drainage ditch 2 are made of resin concrete. The opening diameter of the permeable hole 4 on the seepage inspection well 1 and the seepage drainage ditch 2 is 8-10 mm, and the opening rate is 1.5-3%.

As shown in FIG. 3 , the horizontal connecting pipe 3 is a plastic pipe made of HDPE, and the connection between the horizontal connecting pipe and the side wall of the seepage inspection well and the seepage drainage ditch is provided with a reinforcing plate 11 .

As shown in FIG. 5 , the trash interception basket is made of stainless steel, funnel-shaped, and has water-permeable channels 10 distributed on its side walls. The outer periphery of the trash basket is covered with non-woven geotextiles.

Referring to Fig. 6, the cross-section of the infiltration drainage ditch 2 is a U-shaped structure with a width of 100-600mm, and the length of each drainage grate cover 8 is 600-1000mm. The drain grate cover can be hollowed out or grid-shaped, and its permeable holes can be designed into letter shapes, text shapes or various pattern shapes according to the needs of the surrounding environment in addition to the conventional strip shape and circle shape. The length of each section of seepage drainage ditch 2 can be more than 2 meters. The upper edge of the seepage drainage ditch 2 is L-shaped, and the two edges are symmetrical so as to embed the drainage ditch grate cover. The bottom corner of the seepage drainage ditch 2 has a reinforced bottom Hold 12.

The working process of the present invention: the rainwater first falls on the ground and the roof, and then enters the infiltration facility after converging. In the infiltration inspection well, it is first intercepted and filtered by the interception frame, and after the filtration, the rainwater is filled in the gravel layer and continuously infiltrated at the same time. As the rainfall continues, the rainwater will continue to increase, and the rainwater will infiltrate while being stored. The excess rainwater will overflow the outlet of the seepage inspection well and enter the infiltration drainage ditch, and then the rainwater will be stored and infiltrated in the infiltration drainage ditch, and so on. A seepage inspection well, that is, continuous storage and infiltration throughout the entire infiltration-drainage integration. When the maximum rainwater load of the system is exceeded, the system will drain the excess rainwater to the downstream municipal pipe network or into the rainwater collection tank for further processing. recycle and re-use.

Claims (8)

1. rain penetration-discharging integrated ecological system; It is characterized in that: comprise be distributed in the building ground, sub-district penetration inspection well (1), be infiltration gutter (2) and the transverse connecting pipe between the two (3) that network is connected in each penetration inspection well; The sidewall of said penetration inspection well (1) and bottom surface are distributed with permeable hole (4); The periphery of penetration inspection well is laid with layer of gravel (5); The periphery of layer of gravel is equipped with the permeable geotextiles of one deck (6), is provided with in the well head of penetration inspection well (1) to block the dirty dirty basket (9) that cuts, and is stamped permeable well lid (7) on the well head; The sidewall in said infiltration gutter (2) has permeable hole, and infiltration periphery, gutter is laid with layer of gravel, and the layer of gravel periphery is equipped with the permeable geotextiles of one deck, and gutter grating (8) is stamped at the top in infiltration gutter, and gutter grating (8) is concordant with ground;

The gradient of laying of permeating gutter (2) between the said adjacent penetration inspection well is 0.01～0.02, each penetration inspection well lay the gradient from high to low;

The said penetration inspection well (1) that lays gradient lowest part is connected with municipal drainage pipe network or rainwater collecting pit by gutter.

2. rain penetration-discharging integrated ecological system according to claim 1 is characterized in that: the resin concrete material is all adopted in said penetration inspection well (1) and infiltration gutter (2).

3. rain penetration-discharging integrated ecological system according to claim 1 is characterized in that: the opening diameter of the permeable hole (4) on said penetration inspection well (1) and the infiltration gutter (2) is 8～10mm, percent opening 1.5～3%.

4. rain penetration-discharging integrated ecological system according to claim 1 is characterized in that: be equipped with the permeable geotextiles of one deck (6) between the periphery in said penetration inspection well (1) and infiltration gutter (2) and the layer of gravel (5).

5. rain penetration-discharging integrated ecological system according to claim 1; It is characterized in that: said transverse connecting pipe (3) is the plastic pipe of HDPE material; The junction in transverse connecting pipe and penetration inspection well sidewall and infiltration gutter is equipped with gusset plate (11).

6. rain penetration-discharging integrated ecological system according to claim 1; It is characterized in that: the cross section in said infiltration gutter (2) is the U-shaped structure; Wide is 100～600mm; The bottom comers place in infiltration gutter (2) has collet (12), and the length of every gutter grating (8) is 600～1000mm.

7. rain penetration-discharging integrated ecological system according to claim 1 is characterized in that: said blocking dirty cut dirty basket and is the dirty basket of blocking of stainless steel, and the peripheral closure of blocking dirty basket has non-woven geotextile.

8. rain penetration-discharging integrated ecological system according to claim 7 is characterized in that: the said dirty basket (9) that blocks is distributed with water-permeable passage (10) for infundibulate on its sidewall.

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