CN215252082U

CN215252082U - Concave type green belt system of urban road sponge facility

Info

Publication number: CN215252082U
Application number: CN202120545574.2U
Authority: CN
Inventors: 王晓晓; 王超; 李潇; 任振方; 张涛; 衣然; 朱江; 刘源
Original assignee: Beijing General Municipal Engineering Design and Research Institute Co Ltd
Current assignee: Beijing General Municipal Engineering Design and Research Institute Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-21
Anticipated expiration: 2031-03-16

Abstract

A recessed green belt system of an urban road sponge facility comprises a motor vehicle lane, a non-motor vehicle lane and a recessed green belt positioned between the motor vehicle lane and the non-motor vehicle lane, wherein a seepage overflow well is arranged in the recessed green belt, and an overflow pipe of the seepage overflow well is connected to a rainwater inlet connecting pipe; a longitudinal shallow dish type side ditch is arranged on one side of the concave green belt close to the non-motor vehicle lane, the longitudinal shallow dish type side ditch is arranged along the longitudinal direction of the non-motor vehicle lane road in a through manner, a transverse shallow dish type side ditch communicated with the longitudinal shallow dish type side ditch is arranged at the position of the seepage overflow well, and the transverse shallow dish type side ditch extends to the position of the seepage overflow well; the longitudinal shallow dish-shaped kerbs are laid directly outside the kerbs close to the non-motor vehicles. A large amount of rainwater can flow into the infiltration overflow well, has also avoided a large amount of rainwater to erode the soil body simultaneously. The rainwater absorption function of the road green belt is realized, and the rainwater storage, seepage, purification and drainage within the road range are realized.

Description

Concave type green belt system of urban road sponge facility

Technical Field

The utility model belongs to the technical field of sponge city infrastructure construction, specifically a recessed formula greenbelt system of urban road sponge facility is disclosed.

Background

The method for making the concave-down green belt of the road sponge facility is suitable for machine-non (motor vehicle and non-motor vehicle) separation belts of three-way and four-way urban roads, and the concave-down green belt is widely applied to various newly-built urban roads along with the construction of sponge cities. The existing concave type green belt is made by arranging a non-separating belt of a greening machine in a red line of a road into a concave type, namely the surface of planting soil is 0.05-0.1 m lower than the pavement of a motor vehicle lane, and arranging a seepage overflow well in the concave type green belt. The overflow pipe of the seepage overflow well is connected with the rainwater inlet connecting pipe, so that rainwater in a road range can be stored, seeped, purified and discharged. However, since a large amount of rainwater is collected in the green belt, there are several problems:

1. rainwater collects runoff to soil bodies in the sunken green belt, particularly soil bodies close to one side of the non-motor vehicle road are washed for a certain time, so that the back of a curb at the side of the non-motor vehicle road is exposed and leaked after a long time, and the rain water is unstable and easy to collapse;

2. rainwater is stored in the concave greening belt for a long time and slowly seeps downwards, and the rainwater soaks plants for a long time, so that the influence on the growth of the plants in the greening belt is large;

3. the temperature of the rainwater at the initial stage of the road is higher, and the rainwater flowing into the green belt has certain influence on the growth of plants;

4. the initial rainwater in the range of the non-motor vehicle lane and the sidewalk has certain pollutants, and certain filtration and purification are also needed.

At present, in the implementation method of the concave type green belt, relevant measures aiming at the existing problems are not provided, so that the conventional method that a large amount of rainwater is concentrated in the concave type green belt needs to be changed urgently, and the rainwater consumption function of the road green belt is enhanced.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a recessed formula greenbelt system of urban road sponge facility, its aim at solve the rainwater collect the rainwater that causes in the greenbelt in a large number soak the plant for a long time, the rainwater temperature is higher and the rainwater has certain pollutant to the destruction of plant, and to the technical problem that the kerbstone back soil that is close to non-motor vehicle lane one side erodees and makes its unstability collapse easily.

The utility model discloses a realize through following technical scheme:

a concave type green belt system of an urban road sponge facility comprises a motor vehicle lane, a non-motor vehicle lane and a machine-non separation belt positioned between the motor vehicle lane and the non-motor vehicle lane, wherein the machine-non separation belt is a concave type green belt, a seepage overflow well is arranged in the concave type green belt, and an overflow pipe of the seepage overflow well is connected with a rainwater port connecting pipe; a longitudinal shallow dish-shaped side ditch is arranged on one side edge of the concave green belt close to the non-motor vehicle lane, the longitudinal shallow dish-shaped side ditch is arranged along the longitudinal direction of the non-motor vehicle lane road in a full-length mode, a transverse shallow dish-shaped side ditch communicated with the longitudinal shallow dish-shaped side ditch is arranged at the position of the permeation overflow well, and the transverse shallow dish-shaped side ditch extends to the permeation overflow well; the longitudinal shallow-dish type side ditch is directly paved outside the kerb close to the non-motor vehicle road.

The widths B of the upper openings of the longitudinal shallow disc-shaped side ditch and the transverse shallow disc-shaped side ditch are both 20 cm-30 cm, the depths h2 of the ditches are both 15cm, and the thickness h3 of the mat layer laid in the ditches is 5cm-6 cm.

The in-ditch bedding layer adopts shallow dish type side ditch auxiliary material, shallow dish type side ditch auxiliary material select rubble, cobblestone or building rubbish environmental protection brick regeneration aggregate to pave, combine grass planting to plant simultaneously, constitute ecological shallow dish side ditch.

The shallow-dish-shaped side ditch auxiliary material is directly spread on a green belt soil layer at the bottom of a ditch, grass seeds are spread on the green belt soil layer, and the particle size of broken stone, cobblestone or construction waste environment-friendly brick recycled aggregate is 2-5 cm.

The cross sections of the longitudinal shallow dish type side ditches and the transverse shallow dish type side ditches are arc or trapezoid with concave ditch bottoms; the upper end surfaces of the upper openings of the longitudinal shallow disc-shaped side ditches and the transverse shallow disc-shaped side ditches are flush with the concave type green belts (3).

The width of the transverse shallow dish-shaped side ditch is gradually contracted from the end of the longitudinal shallow dish-shaped side ditch to the infiltration overflow well, and the width of the transverse shallow dish-shaped side ditch at the narrow head is 20-30 cm, namely the width B of the upper opening ditch.

The utility model has the advantages that:

the utility model discloses a set up shallow dish type side ditch in concave formula afforestation separate belt down, along the setting of leading to long of non-motor way road direction to horizontal intercommunication infiltration overflow well has realized holding back most non-motor way and the rainwater that the pavement runoff got off, avoids the rainwater instantaneous to collect concave formula greenbelt low point and plant department, soaks the plant for a long time, influences vegetation. Firstly, can protect the rainwater to come to the soil body of one side and avoid erodeing, secondly can solve a large amount of rainwater and concentrate on the greenbelt, to the soaking of plant roots, the plant is unfavorable for the condition of growth, thirdly is through the direct connection of shallow dish shape side ditch and infiltration overflow well, the walking route of rainwater has been stipulated, the purification and the infiltration of rainwater have been guaranteed to the material of shallow dish type side ditch cobble, with the infiltration overflow well direct continuous normal use of sponge facility under the condition of having guaranteed the greenbelt topography landscape of difference, can make the design theory in sponge city no longer be restricted mud in the formula green belt that sinks. The shallow dish side ditch has also played the filtration purification effect to the initial stage rainwater, has played certain cushioning effect, realizes holding, oozing, clean, arranging of road within range rainwater.

Drawings

FIG. 1 is a schematic plan view of the system of the present invention and the longitudinal and transverse shallow dish-shaped gutters,

figure 2 is a schematic cross-sectional view of 1-1 of figure 1,

figure 3 is a schematic cross-sectional view 2-2 of figure 1,

FIG. 4 is a schematic cross-sectional view of the shallow dished side channel in the longitudinal and transverse directions.

Description of the figure numbering:

the system comprises a motor vehicle lane 1, a non-motor vehicle lane 2, a sidewalk 21, a curb 22, a recessed green belt 3, a seepage overflow well 31, a seepage overflow well cover top 311, a sewage blocking basket 312, an overflow pipe 32, a longitudinal shallow disc type side ditch 4, a transverse shallow disc type side ditch 41, an environment-friendly rain water inlet 5, a rain water inlet connecting pipe 6, a drainage inspection well 7, an anti-seepage geotextile 8, a green belt soil layer 9, a shallow disc type side ditch auxiliary material 10, a sidewalk pavement structure R, a non-motor vehicle lane pavement structure F, a motor vehicle lane pavement structure J, an upper opening ditch width B, a ditch depth h2, a ditch inner cushion layer thickness h3, a seepage overflow well cover top elevation a and a lowest point elevation B of the recessed green belt.

Detailed Description

Referring to fig. 1-4, the utility model discloses a recessed green belt system of urban road sponge facility, including motorway 1, non-motorway 2, be located the machine-vehicle separation zone between motorway 1, non-motorway 2, the machine-vehicle separation zone be recessed green belt 3, set up infiltration overflow well 31 in recessed green belt 3, the overflow pipe 32 of infiltration overflow well insert inlet pipe 6 and see fig. 3; a longitudinal shallow dish type side ditch 4 is arranged on the concave type green belt 3 close to one side of the non-motor vehicle lane 2, the longitudinal shallow dish type side ditch 4 is arranged along the longitudinal direction of the non-motor vehicle lane 2, as shown in figure 1, a transverse shallow dish type side ditch 41 communicated with the longitudinal shallow dish type side ditch 4 is arranged at the position of the seepage overflow well 31, and the transverse shallow dish type side ditch extends to the position of the seepage overflow well 31, as shown in figure 3; can extend to the well wall to contact with the well wall; the longitudinal shallow dish-shaped kerb 4 is laid directly adjacent to the non-motor vehicle curb 22.

The widths B of the upper openings of the longitudinal shallow dish-shaped side ditch 4 and the transverse shallow dish-shaped side ditch 41 are both 20 cm-30 cm, the depths h2 of the ditches are both 15cm, and the thickness h3 of the cushion layer paved in the ditches is 5cm-6cm, which is shown in figure 4.

The in-ditch bedding layer adopt shallow dish type side ditch auxiliary material 10, shallow dish type side ditch auxiliary material 10 select rubble, cobblestone or building rubbish environmental protection brick regeneration aggregate to pave, combine grass planting to plant simultaneously, constitute ecological shallow dish side ditch.

The shallow-dish-shaped side ditch auxiliary material 10 is directly spread on a green belt soil layer 9 at the bottom of a ditch, grass seeds are spread on the green belt soil layer 9, and the particle size of broken stone, cobblestone or construction waste environment-friendly brick recycled aggregate is 2-5 cm.

The width of the transverse shallow dish-shaped side ditch gradually shrinks from the end of the longitudinal shallow dish-shaped side ditch to the infiltration overflow well 31 as shown in figure 1, and the width of the transverse shallow dish-shaped side ditch with a narrow head is 20 cm-30 cm, namely the width B of the upper opening ditch.

Examples

The system structure characteristics of the utility model shown in fig. 1-4 are not repeated herein with the above description, and the system construction of the utility model comprises the following steps:

1. complete the new construction of road pavement and rainwater pipeline

The method comprises the following steps of carrying out conventional construction on urban roads, firstly newly building a municipal pipeline, and then carrying out construction on a pavement structure and a green separation belt after the municipal pipeline is built;

2. arranging the green separation belt, and basically forming a concave soil layer according to the relationship between the lowest point elevation and the road surface elevation;

3. a seepage overflow well is newly built in the green belt, and the overflow pipe is communicated with a rainwater system of the motor vehicle lane;

4. shallow dish-shaped side ditches are reversely dug close to the non-motor vehicle road side in the green belt, broken stones or cobblestones and construction waste recycled aggregate are paved, and grass seeds are scattered. The shallow dish type side ditch is not required to be communicated with the seepage overflow well, and only the shallow dish type side ditch with the cross section to the seepage overflow well is required to be arranged at the position with the seepage overflow well, so that rainwater is guided to the position of the seepage overflow well as fast as possible. The 'reverse digging' is to form a concave green belt first and then reverse digging to form a shallow dish-shaped side ditch on the basis.

The working principle is as follows:

rainwater in the areas of the non-motor vehicle lanes 2 and the pedestrian walkways 21 flows into the longitudinal shallow-disc-shaped side ditches 4 along the longitudinal slopes of the cross slopes of the roads, most of the rainwater flowing down from the non-motor vehicle lanes and the sidewalks can be intercepted by the longitudinal shallow-disc-shaped side ditches, then the rainwater flows to the positions near the infiltration overflow well 31 along the transverse shallow-disc-shaped side ditches 41, a small part of the rainwater can overflow the shallow-disc-shaped side ditches to flow into the green belts 3, the plants in the green belts are prevented from being soaked by the rainwater for a long time, the growth of the plants in the green belts is protected, a large amount of rainwater can flow into the infiltration overflow well 31, and meanwhile, a large amount of rainwater is prevented from scouring soil bodies. Broken stones or cobblestones laid by the shallow-dish side ditches and construction waste recycled aggregate also play a role in filtering and purifying initial rainwater, play a role in buffering to a certain extent, realize the function of the road green belt in absorbing rainwater in the whole process, and realize storage, seepage, purification and drainage of rainwater in a road range.

Claims

1. A concave type green belt system of an urban road sponge facility comprises a motor vehicle lane, a non-motor vehicle lane and a machine-non separation belt positioned between the motor vehicle lane and the non-motor vehicle lane, wherein the machine-non separation belt is a concave type green belt, a seepage overflow well is arranged in the concave type green belt, and an overflow pipe of the seepage overflow well is connected with a rainwater port connecting pipe; the method is characterized in that a longitudinal shallow dish type side ditch (4) is arranged on one side of the concave type green belt (3) close to a non-motor vehicle lane (2), the longitudinal shallow dish type side ditch is arranged along the longitudinal direction of the non-motor vehicle lane, a transverse shallow dish type side ditch (41) communicated with the longitudinal shallow dish type side ditch (4) is arranged at the position of the seepage overflow well (31), and the transverse shallow dish type side ditch extends to the position of the seepage overflow well (31); the longitudinal shallow dish-shaped kerbs are laid directly adjacent to the exterior of the non-motor vehicle curb (22).

2. The recessed green belt system of an urban road sponge facility as claimed in claim 1, wherein the width B of the upper opening of each of the longitudinal shallow saucer-shaped side ditches and the transverse shallow saucer-shaped side ditches is 20cm to 30cm, the depth h2 of each ditch is 15cm, and the thickness h3 of the mat layer in each ditch is 5cm to 6 cm.

3. The recessed green belt system of an urban road sponge facility according to claim 2, wherein the in-ditch bedding layer is made of a shallow dish-shaped gutter auxiliary material (10), and the shallow dish-shaped gutter auxiliary material (10) is paved by using recycled aggregate of crushed stone, cobblestones or building rubbish environment-friendly bricks, and is combined with grass planting for forming the ecological shallow dish gutter.

4. The recessed green belt system of an urban road sponge facility according to claim 3, wherein the shallow dish-shaped side ditch auxiliary material (10) is directly spread on a green belt soil layer (9) at the bottom of the ditch, grass seeds are spread on the green belt soil layer (9), and the particle size of the recycled aggregate of the environment-friendly bricks of the gravel, the cobblestone or the construction waste is 2-5 cm.

5. The recessed green belt system of an urban road sponge facility as claimed in claim 1, wherein the cross section of the longitudinal shallow saucer-shaped side ditch and the transverse shallow saucer-shaped side ditch is arc-shaped or trapezoid with a recessed bottom; the upper end surfaces of the upper openings of the longitudinal shallow disc-shaped side ditches and the transverse shallow disc-shaped side ditches are flush with the concave type green belts (3).

6. The recessed green belt system of an urban road sponge facility according to claim 2, wherein the width of the transverse shallow dish-shaped gutter gradually shrinks from the end of the longitudinal shallow dish-shaped gutter to the infiltration overflow well (31), and the width of the transverse shallow dish-shaped gutter at the narrow end is 20cm to 30cm, namely the width B of the upper opening gutter.