CN108222210B

CN108222210B - A test device for sponge city research test

Info

Publication number: CN108222210B
Application number: CN201711293870.2A
Authority: CN
Inventors: 费凡; 王红武; 高雨妃
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2020-07-28
Anticipated expiration: 2037-12-08
Also published as: CN108222210A

Abstract

The invention relates to a test device for sponge city research tests, which comprises a cubic box body, a base arranged at the bottom of the box body and a stepped filter support arranged on the base, wherein the filter support comprises a perforated horizontal plate and a non-perforated vertical plate which are alternatively abutted, all the perforated horizontal plates and the non-perforated vertical plates form the stepped filter support together, a plurality of water storage spaces are arranged in the base, and the top of each water storage space is covered with one perforated horizontal plate. Compared with the prior art, the water storage capacity of at least one filter material layer or one water storage and drainage layer can be inspected through one test, or the water storage capacity of the two filter material layers or the water storage and drainage layer which are overlapped can be inspected at the same time, so that the test is flexible and variable, and the test efficiency is high; moreover, the device has controllable variables and more reliable test results.

Description

A test device for sponge city research test

Technical Field

The invention relates to the technical field of sponge cities, in particular to a test device for a sponge city research test.

Background

The sponge urban field is hot, and is increasingly concerned by people because of the advantages of relieving urban heat island effect, slowing down urban waterlogging, saving energy, reducing emission, insulating heat, beautifying the living environment of people and the like. The traditional test methods for sponge city research are divided into a small test, a middle test and a large test. The small test of the sponge city is generally a filter column test with the device volume of 0.4m 0.3m 0.2m, the large test is generally a box test with the device volume of 2m 1m 0.3m, and the large test device consists of a PVC or HDPE plastic box and an angle steel bracket. However, the current large-scale test device has one of the biggest disadvantages: because the blank comparison group needs to be independently arranged, and only one group of comparison test can be obtained in one test, but the test conditions are difficult to ensure to be completely the same in two different tests, so that not only larger manpower and material resources are needed, but also certain deviation exists in the result.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the test device for the sponge city research test with high test efficiency.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a test device for sponge city research test, this test device includes the box of a cube, sets up the base at the bottom half and sets up the ladder-shaped on the base strain the support, strain the support including the foraminiferous horizontal plate and the vertical board of sclausura of butt in turn, all foraminiferous horizontal plates and the vertical board of sclausura form the filter support of ladder-shaped jointly, be equipped with a plurality of water storage spaces in the base, the top in every water storage space covers a foraminiferous horizontal plate.

The number of the horizontal plates with the holes is 2-5. When foraminiferous horizontal plate is 3, whole straining holds in the palm and falls into 3 ladders, loads on the ladder of bottom and holds the drainage blanket, flushes with the bottom of last ladder until holding the drainage blanket, then loads the precoat on the upper portion that these two ladder cross-sections correspond, flushes with the bottom of the ladder of the superiors until the precoat, then evenly loads the soil layer on the upper portion that these three ladder cross-sections correspond, plants the plant on soil layer upper portion at last. During the test, at the even precipitation of top of plant, correspond the part in the superiors' ladder cross-section, precipitation passes the soil layer and directly gets into water storage space, and at middle ladder, precipitation passes through the soil layer in proper order and filters the bed of material and gets into water storage space, and in the ladder of lower floor, precipitation passes through the soil layer in proper order, filters the bed of material and holds water storage space behind the drainage blanket, through survey the ponding in precipitation and the final three water storage space, can investigate the water storage performance of filter the bed of material and holding the drainage blanket material through an experiment. According to the demand, only need test when experimental the water storage capacity that holds the drainage blanket or only need test the precoat, then the quantity of foraminiferous horizontal plate is 2, if 2 kinds of common water storage capacities that hold drainage blanket or precoat of survey, then the quantity of foraminiferous horizontal plate is 4 ~ 5, according to the experimental demand, selects the quantity of different box and foraminiferous horizontal plate promptly.

The base including the vertical lateral wall that divides of arranging of polylith that sets up at the bottom half, the lower extreme of the lateral wall that divides is airtight with the bottom of box, and two adjacent lateral walls that divide and bottom half form the water storage space together, the upper end of the lateral wall that divides and the bottom butt of the foraminiferous horizontal plate side that corresponds to be located the coplanar with the vertical board of the sclausura that corresponds, separately a plurality of water storage spaces, be used for collecting the precipitation that permeates, can survey the change of the quality of water after holding drainage blanket and the filter bed effect, and can not interfere with each other.

And a drain pipe is arranged at the bottom of each water storage space, a water stop clamp is arranged on each drain pipe, and the drain pipes are used for measuring the accumulated water quantity and the water quality.

The cross sections of the horizontal plates with holes are equal, and the aperture of the hole in each horizontal plate with holes is 0.4-8 mm.

The bottom of the box body is provided with a support, and the bottom of the support is provided with a roller, so that the device can be moved conveniently.

Compared with the prior art, the beneficial effects of the invention are embodied in the following aspects:

(1) through a test, the water storage capacity of at least one filter material layer or one water storage and drainage layer can be inspected, or the water storage capacity of two filter material layers or the water storage and drainage layer which are overlapped can be inspected at the same time, so that the test is flexible and changeable and the test efficiency is high;

(2) the variable is controllable, and the test result is more reliable.

Drawings

FIG. 1 is a schematic view of the structure of an apparatus in example 1;

FIG. 2 is a schematic view of the structure of an apparatus in example 2;

fig. 3 is a schematic structural view of the apparatus in embodiment 3.

Wherein, 1 is the box, 11 is the support, 2 is for straining the support, 21 is foraminiferous horizontal plate, 22 is the vertical board of sclausura, 3 is the base, 31 is the water storage space, 32 is the lateral wall that divides water, 33 is the drain pipe, 34 is the water clamp, 4 is for holding the drainage blanket, 5 is the filter bed, 6 is the soil layer, 7 is the plant.

Detailed Description

The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.

Example 1

A test device for sponge city research test is structurally shown in figure 1 and comprises a cubic box body 1, a base 3 arranged at the bottom of the box body 1 and a stepped filter support 2 arranged on the base 3, wherein the filter support 2 comprises perforated horizontal plates 21 and non-perforated vertical plates 22 which are alternatively abutted, all the perforated horizontal plates 21 and the non-perforated vertical plates 22 jointly form the stepped filter support 2, a plurality of water storage spaces 31 are arranged in the base 3, and the top of each water storage space 31 covers one perforated horizontal plate 21.

The quantity of foraminiferous horizontal plate 21 is 3 whole straining and holds in the palm 2 and divide into 3 ladders, loads on the ladder of bottom and holds drainage blanket 4, until holding drainage blanket 4 and flushing with the bottom of last ladder, then loads precoat 5 on the upper portion that these two ladder cross-sections correspond, until precoat 5 flushes with the bottom of the superiors ladder, then evenly loads soil layer 6 on the upper portion that these three ladder cross-sections correspond, plants 7 on 6 upper portions on soil layer at last. During the test, at the even precipitation of the top of plant 7, correspond the part in the superiors' ladder cross-section, precipitation passes 6 direct entering water storage space 31 of soil layer, at middle ladder, precipitation passes through soil layer 6 and filter material layer 5 in proper order and gets into water storage space 31, and in the ladder of lower floor, precipitation passes through soil layer 6 in proper order, filter material layer 5 and hold water storage space 31 of entering behind the drainage blanket 4, through survey the ponding in precipitation and the final three water storage space 31, can be through the water storage performance of once experimental investigation filter material layer 5 and the 4 materials of water storage blanket.

Base 3 is including setting up the water diversion lateral wall 32 of the vertical arrangement of polylith in box 1 bottom, the lower extreme of water diversion lateral wall 32 is airtight with box 1's bottom, and two piece adjacent water diversion lateral walls 32 and box 1 bottom form water storage space 31 together, the upper end of water diversion lateral wall 32 and the bottom butt of the foraminiferous horizontal plate 21 side that corresponds, and be located the coplanar with the vertical board 22 of the sclausura that corresponds, separately part a plurality of water storage spaces 31 alone, a precipitation for collecting the infiltration, can survey the change of the quality of water after holding drainage blanket 4 and the filter bed 5 effects, and can not interfere with each other.

The bottom of each water storage space 31 is provided with a drain pipe 33, a water stop clamp 34 is arranged on the drain pipe 33, and the drain pipe 33 is used for measuring the water accumulation amount and the water quality.

The cross sections of the horizontal plates with holes 21 are equal, and the aperture of the hole in each horizontal plate with holes 21 is 0.4-8 mm.

The bottom of the box body 1 is provided with a support 11.

Example 2

A similar device to that of example 1 was used, except that in this example only two perforated horizontal plates 21 were provided, so that the test only tested the water retention capacity of the filter layer 5, as shown in figure 2.

Example 3

The device similar to the device of the embodiment 1 is adopted, except that only four perforated horizontal plates 21 are arranged in the embodiment, and the device can measure the water storage capacity of the water storage and drainage layer 4, the single filter material layer 5 and the superposed two filter material layers 5 in three states, as shown in figure 3.

Claims

1. The utility model provides a test device for sponge city research test, its characterized in that, this test device includes the box of a cube, sets up the base in the bottom of the box and sets up the echelonment on the base strain the support, strain the support including foraminiferous horizontal plate and the vertical board of sclausura of butt in turn, all foraminiferous horizontal plates and the vertical board of sclausura form the echelonment jointly and strain the support, be equipped with a plurality of water storage spaces in the base, the top cover foraminiferous horizontal plate of every water storage space.

2. The test device for the sponge city research test as claimed in claim 1, wherein the number of the perforated horizontal plates is 2-5.

3. The test device for the sponge city research test as claimed in claim 1, wherein the base comprises a plurality of vertically arranged water-dividing side walls arranged at the bottom of the box body, the lower ends of the water-dividing side walls are sealed with the bottom of the box body, two adjacent water-dividing side walls and the bottom of the box body form a water storage space together, and the upper ends of the water-dividing side walls are abutted against the bottoms of the sides of the corresponding horizontal plates with holes and are positioned on the same plane with the corresponding vertical plates without holes.

4. The test device for the research test of the sponge city according to claim 3, wherein a drain pipe is arranged at the bottom of each water storage space, and a water stop clip is arranged on each drain pipe.

5. The test device for the sponge city research test as claimed in claim 1, wherein the cross section of each perforated horizontal plate is equal, and the aperture of the hole on each perforated horizontal plate is 0.4-8 mm.

6. The test device for the research test of the sponge city as claimed in claim 1, wherein a support is arranged at the bottom of the box body, and rollers are arranged at the bottom of the support.