CN212835271U

CN212835271U - Small landscape dam system for slow flow soil conservation and water purification

Info

Publication number: CN212835271U
Application number: CN202021347383.7U
Authority: CN
Inventors: 顾亚兰; 庄凯; 刘雁丽; 王春浩
Original assignee: Jinpu Landscape Co ltd
Current assignee: Jinpu Landscape Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-30
Anticipated expiration: 2030-07-10

Abstract

The utility model relates to the technical field of water conservancy and hydropower and landscape engineering application, and discloses a small landscape dam system for slow flow, soil conservation and water purification, which comprises a water passing rockfill dam and a clay core wall rockfill dam; the overflow rock-fill dam consists of a soil filling area, a rock-fill area, masonry bars and a concrete panel; the clay core rock-fill dam comprises a non-overflow dam section and an overflow dam section; the clay core rockfill dam consists of a concrete panel, a cushion layer, a transition layer, a reverse filtration transition layer, a clay core, a dam top, a concrete base and a grouting curtain; and a concrete step is arranged on the water outlet dam surface of the overflow dam section to plant aquatic plants. The utility model discloses can alleviate the scouring action to water bottom and dam body, the pollutant in the effective processing water builds good ecological landscape simultaneously, and this view dam system possesses good slow flow and protects soil, improves quality of water, resumes ecosystem's comprehensive function.

Description

Small landscape dam system for slow flow soil conservation and water purification

Technical Field

The utility model relates to a water conservancy water and electricity and landscape engineering application technical field especially relate to a slow flow protects small-size view dam system of native water purification.

Background

With the development of society, the living idea and the living quality of people are continuously improved, and in order to meet the new expectation of people on good ecological environment, the urban landscape water system is used as an important component of urban landscape and has important significance for improving the living of residents and beautifying the environmental quality. In recent years, city landscape water systems are planned in many cities in response to the call of 'five water co-treatment' of the government around the construction of new rural areas and the transformation of old urban areas. The water surface in the ecological system plays important roles of flood control, waterlogging drainage, temperature and humidity regulation, air purification, dust absorption, noise reduction, urban microclimate improvement, health care, landscape beautification and the like. In the construction of artificial water landscapes such as rivers, artificial lake revetments and the like, increasing the water surface is one of the indispensable measures. According to the conventional method, the upstream landscape water surface and the downstream ecological flow are adjusted by arranging a concrete dam, an earth-rock dam and a steel dam at the downstream. How to construct an ecological, economic and beautiful dam under the condition of ensuring water retention and water storage becomes a problem which needs to be solved urgently by technical personnel in the field.

The earth-rock dam has simple structure, and is characterized in that an impervious body of the dam is formed by relatively impervious or weakly permeable earth materials and organic synthetic materials, and a dam shell is formed by earth-rock materials with relatively strong upstream and downstream water permeability and air permeability. The slope protection can adopt ecological protection and building materials and plant turf, shrubs and emergent and submerged plants, and a natural ecological system can be formed. However, the top of the earth-rock dam cannot overflow, and a spillway needs to be arranged on the bank to discharge the flood, so that the flood is prevented from overflowing the top of the dam, and the safety of the dam body is ensured. River flood soaks and falls violently, earth and rockfill dam crest and reservoir area water level difference are great, and hydrophilicity is poor, and earth and rockfill dam crest can not overflow, need set up spillway flood discharge on the bank, and excavation, investment and time limit for a project of building bank spillway influence greatly, and bank spillway or flood discharge culvert's view effect is relatively poor. The concrete dam is built by rigid materials such as concrete or masonry stone and the like, so that the concrete dam has the advantages of space saving, dam crest overflow, high safety coefficient and the like, but the surface of the concrete dam is always a vertical smooth surface, the form diversity is single, and the ecological and landscape effects are poor. With the conversion of the traditional single flood control function of the river channel into a new era water control idea of overall management of water resources, water ecology, water environment and water disasters, the traditional river channel management cannot meet the requirements of river sustainable development. In the design process of river control river-blocking buildings, how to realize the combination of water ecology, water landscape and water safety on the premise of ensuring the flood control safety of a river channel becomes a problem which needs to be solved by technical personnel in the field urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem in the prior art in the above-mentioned background art, and the small-size view dam system of water purification that slowly flows and protects soil that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a small-sized landscape dam system for slow flow, soil conservation and water purification comprises an overflow rockfill dam and a clay core rockfill dam, wherein the overflow rockfill dam consists of a soil filling area, a rockfill area, masonry bars and a concrete panel; the clay core rock-fill dam comprises a non-overflow dam section and an overflow dam section; the clay core rockfill dam consists of a concrete panel, a cushion layer, a transition layer, a reverse filtration transition layer, a clay core, a dam top, a concrete base and a grouting curtain; and a concrete step is arranged on the water outlet dam surface of the overflow dam section to plant aquatic plants.

Preferably, the rockfill area is filled with stones with the grain size of 60cm and the porosity of 22% -25%.

Preferably, the concrete of the concrete panel, the concrete base and the concrete ladder is C20 concrete.

Preferably, the slope ratio of the non-overflow dam section to the overflow dam section is 1: 3-1: 3.5, the height of the overflow dam section and the top of the concrete step from the dam top is 1-2 m, the width of the lower step is 1-1.5 m, and the height is 0.5-0.7 m.

Preferably, an energy dissipation pool is arranged at the bottom of the concrete step of the overflow dam section.

Preferably, the concrete ladder is internally provided with a hollow structure, and the planting layer, the zeolite layer, the ceramsite layer and the gravel layer are filled from top to bottom.

Preferably, the aquatic plants are planted in the planting layer and the downstream water body of the effluent dam surface.

Compared with the prior art, the utility model provides a small-size view dam system of water purification slowly flows and protects soil possesses following beneficial effect:

1. this small-size view dam system of slow flow soil conservation water purification, the water can slow down the velocity of water behind the water rock-fill dam, reduces the impact of rivers to river body bottom soil layer, realizes the function of slow flow soil conservation. The slow-flow water body can reduce the impact of facing the dam body simultaneously, and when the water level reached overflow dam section height, the water body flowed downwards step by step through the concrete ladder, combines the aquatic plant to build the view of artificial waterfall, and the dam crest can realize current function simultaneously. The flow velocity of the water body can be further reduced by the steps and the effect of the energy dissipation pool is combined, and the influence of the overflow water body on downstream plants is reduced. The overflowing water body is conveyed in the concrete step by step under the ecological action of microorganisms and animals and plants and the physical adsorption action of each matrix layer in the concrete step, the purification stroke and the hydraulic retention time are increased, an adhesion medium is provided for the microorganisms, the removal rate of COD (chemical oxygen demand) is more than or equal to 85%, the removal rate of SS (suspended substances) is more than or equal to 80%, the removal rate of heavy metals is more than or equal to 80%, and pollution factors in the treated water are greatly reduced and removed.

2. This small-size view dam system of slow flow soil conservation water purification, it is as an organic whole to collect retaining, current, interception upper reaches silt and polluted impurity, formation various aquatic organisms coexistence space through view dam system, and the water velocity of flow is lower, plants and has ornamental aquatic plant, has better view nature.

3. This gentle stream protects small-size view dam system of soil water purification, under the prerequisite of guaranteeing river course flood control safety, this view dam system realizes that water ecology, water landscape combine with water safety, and water resource, water ecology, water environment, water disaster are administered in a lump, possess good gentle stream protect soil, build the view, improve quality of water, resume ecosystem's integrated function.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can lighten the scouring action to water bottom and dam body, the pollutant in the effective processing water builds good ecological landscape simultaneously, and this view dam system possesses good slow flow and protects soil, improves quality of water, resumes ecosystem's integrated function.

Drawings

FIG. 1 is a schematic structural view of a small landscape dam system for water purification and soil conservation with slow flow;

fig. 2 is a schematic structural view of the clay core dam of the present invention;

fig. 3 is a schematic structural diagram of a concrete step of the clay core wall of the present invention.

In the figure: 100-water rock-fill dam; 200-clay core rockfill dam; 201-non-overflow dam section; 202-overflow dam section; 1-a soil filling area; 2-rockfill area; 3-building a stone strip; 4-concrete panels; 5-cushion coat; 6-a transition layer; 7-reverse filtering the transition layer; 8-clay core walls; 9-dam crest; 10-a concrete base; 11-grouting curtain; 12-concrete stairs; 13-an energy dissipation pool; 14-aquatic plants; 15-planting layer; a 16-zeolite layer; 17-a gravelly layer; 18-gravel layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a small landscape dam system for slow flow, soil conservation and water purification comprises a water passing rockfill dam 100 and a clay core rockfill dam 200, wherein the water passing rockfill dam 100 consists of a soil filling area 1, a rockfill area 2, masonry stone 3 and a concrete panel 4; the clay core rockfill dam 200 comprises a non-overflow dam section 201 and an overflow dam section 202; the clay core rockfill dam 200 consists of a concrete panel 4, a cushion layer 5, a transition layer 6, a reverse filtration transition layer 7, a clay core 8, a dam crest 9, a concrete base 10 and a grouting curtain 11; the water outlet dam surface of the overflow dam section 202 is provided with a concrete step 12 for planting aquatic plants 14.

In the embodiment, the rockfill area 2 is filled with stones with the maximum grain size of less than 60cm and the porosity of 22-25%.

In this embodiment, the concrete of the concrete panel 4, the concrete base 10 and the concrete step 12 is C20 concrete.

In this embodiment, the slope ratio between the non-overflow dam section 201 and the overflow dam section 202 is 1: 3-1: 3.5, the height of the overflow dam section 202 and the top of the concrete step 12 from the dam crest 9 is 1-2 m, the width of the lower step is 1-1.5 m, and the height is 0.5-0.7 m.

In this embodiment, an energy dissipation pool 13 is arranged at the bottom of the concrete step 12 of the overflow dam section for slow flow energy dissipation.

In this embodiment, the concrete step 12 is hollow, and filled with a planting layer 15, a zeolite layer 16, a ceramsite layer 17 and a gravel layer 18 from top to bottom.

In this embodiment, the aquatic plants 14 are planted in the planting layer 15 and the downstream water body of the dam surface, and are combinations of flooding-resistant and drought-resistant plants, such as etiolated iris, reed rhizome, verbena compressa, stiff balsam stem, and the like.

In the utility model, the water can slow down the velocity of water after water rock-fill dam 100, reduce the impact of rivers to river bottom soil layer, the function that realizes slowly flowing and protect soil can slow down the impact of holding the dam body simultaneously, when the water level reaches overflow dam section 202 height, the water flows downwards step by step through concrete ladder 12, combine aquatic plant 14 to build the view of artificial waterfall, dam crest 9 can realize the function of passing through can further slow down the water velocity through the ladder and combine the effect of energy dissipation pool 13 simultaneously, reduce the influence of overflow water to downstream plant overflow water through microorganism, the ecological action of animal and plant, combine the physical adsorption of each matrix layer in concrete ladder 12, water is carried step by step at concrete ladder 12, increase purification stroke and water conservancy dwell time, provide the adhesion medium for the microorganism, can realize that COD clearance is more than or equal to 85%, SS clearance is more than or equal to 80%, the removal rate of heavy metals is more than or equal to 80%, the pollution factors in the treated water are greatly reduced, the landscape dam system integrates water storage, passing and upstream silt and pollution impurities interception, various aquatic organism coexistence spaces are formed, the water flow rate is low, ornamental aquatic plants are planted, the landscape dam system has good landscape performance, and under the premise that the flood control safety of a river channel is guaranteed, the landscape dam system realizes the combination of water ecology, water landscape and water safety, comprehensively manages and controls water resources, water ecology, water environment and water disasters, and has good functions of slowing flow, soil conservation, landscape construction, water quality improvement and ecological system restoration.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A small-sized landscape dam system for slow flow, soil conservation and water purification comprises a water passing rockfill dam (100) and a clay core rockfill dam (200), and is characterized in that the water passing rockfill dam (100) consists of a soil filling area (1), a rockfill area (2), a masonry stone (3) and a concrete panel (4); the clay core rockfill dam (200) comprises a non-overflow dam section (201) and an overflow dam section (202); the clay core rock-fill dam (200) consists of a concrete panel (4), a cushion layer (5), a transition layer (6), a reverse filtration transition layer (7), a clay core wall (8), a dam top (9), a concrete base (10) and a grouting curtain (11); and a concrete step (12) is arranged on the water outlet dam surface of the overflow dam section (202) and is used for planting aquatic plants (14).

2. The small landscape dam system for slow flow, soil conservation and clean water according to claim 1, wherein the rockfill area (2) is filled with stones with a particle size of 60cm and a porosity of 22-25%.

3. A slow flow, soil conservation and clean water mini landscape dam system as claimed in claim 1, wherein the concrete of the concrete panels (4), concrete foundation (10) and concrete ladder (12) is C20 concrete.

4. The small landscape dam system for slow flow, soil conservation and clean water according to claim 1, wherein the slope ratio of the non-overflow dam section (201) to the overflow dam section (202) is 1: 3-1: 3.5, the height of the overflow dam section (202) and the top of the concrete step (12) from the dam crest (9) is 1-2 m, the width of the lower step is 1-1.5 m, and the height is 0.5-0.7 m.

5. The small landscape dam system with slow flow, soil conservation and pure water functions as claimed in claim 1, wherein an energy dissipation pool (13) is arranged at the bottom of the concrete step (12) of the overflow dam section.

6. A slow-flow soil-conserving water-purifying small-sized landscape dam system according to claim 1, wherein the concrete step (12) is hollow and filled with a planting layer (15), a zeolite layer (16), a ceramsite layer (17) and a gravel layer (18) from top to bottom.

7. The system of claim 1, wherein the aquatic plants (14) are planted in the planting layer (15) and the water body downstream of the dam surface.