CN210905121U - Nested formula sponge city core cylinder - Google Patents

Abstract

The utility model provides a nested formula sponge city core cylinder for increase surface infiltration under water in the sponge city construction field. The embedded sponge city core column body is divided into an embedded permeable filter core and a peripheral protection column barrel, wherein the embedded permeable filter core is used for realizing the increase of the high permeability of the subsurface infiltration rate. The utility model has the advantages that: the peripheral protection column cylinder with relatively small external gap and high strength ensures that the nested core column body is not extruded and deformed when being embedded in soil for practical use, and ensures the durability of the nested core column body structure; the embedded permeable filter element with larger internal gap and relatively lower strength increases the subsurface infiltration, and ensures the practicability of the embedded core cylinder body structure; the uniform requirements of water permeability and firmness of the traditional core column body can be met respectively by an internal and external nesting method, and then the core column body is skillfully combined, so that the nested sponge city core column body is more practical; simple preparation and more practicability.

Description

Nested formula sponge city core cylinder

Technical Field

The utility model belongs to sponge city construction field, in particular to nested formula sponge city core cylinder provides a new thinking for the development of assembled permeable component among the sponge city construction.

Background

At present, the contradiction between seasonal rain and flood disasters and water resource shortage becomes a key for restricting the benign development of cities in China. The demand of urban water is continuously increasing, the total amount of urban water resources is limited, and the water resources of most cities are close to or reach the development and utilization limit. The urban water resource in China is extremely deficient and relates to a wide range of problems, and the urban water in China causes about 2000 billion yuan of economic loss each year due to water shortage. Due to the influence of seasonal weather, the precipitation in summer is large in coastal areas and parts of inland areas in China, and seasonal precipitation is unevenly distributed. In addition, the surface hardening leads the impervious area to be increased rapidly, and increases the difficulty of surface rainwater infiltration. In order to deal with the dilemma of urban environment development, China successively implements strategies such as south-to-north water diversion, regional reclaimed water recycling, sponge city construction and urban comprehensive pipe galleries, wherein the sponge city construction scheme proposed and gradually implemented in 2012 becomes an important measure for solving urban waterlogging disasters and coping with water resource shortage.

The sponge city refers to a city which can be like a sponge and has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters and the like. The soil under rainfall has good water absorption, water storage, water seepage and water purification capabilities, and the water stored in the underground rock-soil layer can be released and utilized when water is needed. At present, the construction of sponge cities in China mainly uses the existing water areas, underground water storage facilities and other ways, and the reasonable construction of underground water storage spaces in urban areas becomes an important direction for the construction of sponge cities. Most of the existing sponge city construction adopts permeable pavement, ecological detention, artificial wetland, water system, municipal drainage and permeable pavement for design, and cannot economically utilize the self water storage and purification capacity of soil body. Meanwhile, the permeability coefficient of the soil body in the horizontal direction is 10-1000 times larger than that in the vertical direction under the influence of the layering characteristics of marine soil and land sedimentary soil. It is obvious that the prior measures such as permeable pavement and ecological detention which only depend on the vertical transport capacity of the soil body cannot transport the surface water to the underground soil layer quickly.

In fact, the long-term medium and small-sized rainwater cannot cause urban rainfall flood and waterlogging disasters, and seasonal and sudden heavy rain weather is the main reason for causing the rainfall flood disasters. Therefore, the sponge city construction technology is only effective technology capable of rapidly conveying the surface water to the underground sponge. In order to solve the main problem, the invention provides a water permeable component of a nested sponge city core column body: the embedded permeable filter element made of stones with larger particle sizes is used for improving the infiltration efficiency of surface water and effectively reducing surface water; the peripheral protection column cylinder made of stones with smaller particle sizes is used for strength protection of the nested sponge city core column body in the practical application process. The nested formula core cylinder that this paper provided combines together traditional sponge city core cylinder required water permeability and the tightness ingeniously of permeating water the component, really has played the effect of the component of permeating water in the sponge city, improves the ecological environment in city, improves people's quality of life.

Disclosure of Invention

In order to solve the problem, the utility model aims at providing a alleviate urban waterlogging harm, increase surface water infiltration rate's nested formula sponge city core cylinder.

In order to achieve the above object, the utility model adopts the following technical scheme: a nested sponge city core column body comprises an embedded permeable filter element and a peripheral protection column cylinder, wherein the diameter of the peripheral protection column cylinder 1 is 8-12 cm, and the length of the peripheral protection column cylinder is 100-150 cm; selecting pervious concrete with continuous graded stones with the particle size of 5-10 mm as a main material, and embedding a pervious filter element 2 with the diameter of 4-8 cm and the length of 100-150 cm; selecting pervious concrete which is made of stones with single grain size gradation of 16-31.5 mm as main materials and is positioned in the center of a peripheral protection column casing; the embedded permeable filter element 2 and the peripheral protection column casing 1 are mutually independent. The two are respectively stirred, poured and maintained, and are assembled into a whole in actual use.

The utility model has the advantages that: the water permeability and the firmness required by the water permeable component of the sponge city core column body are skillfully combined. The nested sponge city core column has the characteristics of novel conception, simplicity and convenience in preparation, higher practicability and the like, and can be widely applied to sponge city construction.

Drawings

FIG. 1 is a schematic axial cross-sectional view of a nested sponge city core column of the present invention;

figure 2 is the utility model relates to a nested formula sponge city core cylinder's cross section schematic diagram.

In the figure:

1. peripheral protection column

2. Embedded permeable filter element

Detailed Description

The structure of the nested sponge city core column provided by the utility model is explained in detail with the attached drawings.

The utility model provides a pair of nested formula sponge city core cylinder is in view of rainfall flood and waterlogging calamity, and the city waterlogging problem that seasonal, proruption torrential rain weather etc. brought is solved through embedding this member of permeating water of nested formula sponge city core cylinder in the soil body. The nested sponge city core column body is composed of an embedded permeable filter core and a peripheral protection column barrel. In the practical application process, the water permeability and the firmness required by the traditional sponge city core column body water permeable component are ingeniously combined together, so that the surface underwater permeability can be greatly increased, the actual service life of the water permeable component is prolonged, and the practicability and the durability of the sponge city water permeable component are improved.

As shown in fig. 1 and fig. 2, the utility model provides a nested sponge city core column, which comprises an embedded permeable filter element and a peripheral protection column, wherein the embedded permeable filter element 2 is embedded into the peripheral protection column 1, and the peripheral protection column 1 has a diameter of 8-12 cm and a length of 100-150 cm; selecting permeable concrete prepared from stones with 5-10 mm of continuous gradation grain diameter as a main material; the diameter of the embedded permeable filter element 2 is 4-8 cm, and the length of the embedded permeable filter element is 100-150 cm; selecting pervious concrete which is made of stones with single grain size gradation of 16-31.5 mm as main materials and is positioned in the center of a peripheral protection column casing; the embedded permeable filter element 2 and the peripheral protection column casing 1 are mutually independent. The two are respectively stirred, poured and maintained, and are assembled into a whole in actual use.

The utility model provides a pair of nested formula sponge city core cylinder can effectively increase the actual life of surface underwater infiltration efficiency and the component that permeates water when in-service use, and the required water permeability of this component that permeates water of sponge city core cylinder is ingeniously combined together with the practicality again simultaneously to make this component that permeates water of core cylinder more have practicality and durability in sponge city construction, provide new direction for the development of the component that permeates water in the sponge city.

Claims (2)

1. A nested sponge city core cylinder comprising: embedded filter core and the peripheral protection column casing of permeating water, its characterized in that: the embedded water permeable filter element (2) is embedded into the peripheral protection column barrel (1), and the diameter of the peripheral protection column barrel (1) is 8-12 cm, and the length of the peripheral protection column barrel is 100-150 cm; the pervious concrete is stones with continuous gradation of 5-10 mm in particle size; the diameter of the embedded water permeable filter element (2) is 4-8 cm, and the length of the embedded water permeable filter element is 100-150 cm; the pervious concrete is stones with single grain size grading of 16-31.5 mm in grain size and is positioned in the center in the peripheral protection column barrel.

2. The nested sponge city core column according to claim 1, characterized in that: the embedded water permeable filter element (2) and the peripheral protection column casing (1) are manufactured independently.

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