Collapsed loess district rain flood collecting and storing cascade artificial lake system and design method

A technology for collapsible loess and artificial lakes, which is applied in the field of cascaded artificial lake systems for rainwater collection and storage in collapsible loess areas, which can solve problems such as insufficiency and achieve the effect of improving the environment

Inactive Publication Date: 2016-12-07
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although modern waterproof technology can solve the problem of underground seepage and soil infiltration to a certain extent, it is far from enough for the special topography and landform of the collapsible loess area. It must be considered in the overall structure to comprehensively solve the problem of infiltration. collapse problem

Method used

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  • Collapsed loess district rain flood collecting and storing cascade artificial lake system and design method
  • Collapsed loess district rain flood collecting and storing cascade artificial lake system and design method
  • Collapsed loess district rain flood collecting and storing cascade artificial lake system and design method

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Embodiment 1

[0059] This embodiment is a rainwater collection and storage cascade artificial lake system in a collapsible loess area, such as figure 1 Shown. This embodiment includes: an imported regulating sedimentation basin, the entrance regulating sedimentation basin and at least two artificial lakes with an anti-collapsing layer and an anti-seepage layer ( figure 1 Middle artificial lake A, artificial lake B, and artificial lake C. Limited to the restrictions of drawing, figure 1 Only 3 artificial lakes are drawn in the middle, but there can actually be 4, 5, or more) connections. The artificial lakes are arranged in vertical height to form steps and connect. The lake with the lowest water level is also provided with a retreat. Water subsystem.

[0060] The artificial lake system described in this embodiment is designed as a cascade artificial lake water system structure based on the characteristics of the soil in the collapsible loess area. Because the soil of collapsible loess is p...

Embodiment 2

[0082] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment on the artificial lake. In this embodiment, the upstream of the inlet regulating sedimentation basin is provided with a diversion control subsystem. The diversion control subsystem includes: a control culvert gate and an automatic control subsystem of the culvert gate. The upstream of the control culvert gate is connected to the urban rainwater collection pipe network. The downstream branch of the control culvert gate mentioned is connected with the retreat system and connected with the inlet regulating sedimentation basin, such as figure 2 Shown.

[0083] The rainwater collected by the artificial lake system may come from cities or other natural environments. In this embodiment, it mainly comes from the urban rainwater catchment area. The rainwater is collected into the artificial lake for storage through the urban rainwater pipe network and hardened ground. At the begi...

Embodiment 3

[0093] This embodiment is an improvement of the above embodiment, and is a refinement of the above embodiment on the artificial lake. The artificial lake in this embodiment includes: deep water area, shallow water area, gentle slope area, and beach area.

[0094] According to the difference in water depth and function of the artificial lake in the collapsible loess area, this embodiment is divided into four types: deep water area, shallow water area, gentle slope area and beach area. The specific distribution of each area is as follows:

[0095] 1) Deep water area: The main function is to form the reservoir capacity and construct the main lake body in the artificial lake area. In addition to meeting the requirements of the slope protection and masonry structure, the stable layout of the lake body's anti-seepage layer structure should be considered, and it should be arranged in the deep horizontal bottom area of ​​the artificial lake bottom. ;

[0096] 2) Shallow water area: Consider...

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Abstract

The invention relates to a collapsed loess district rain flood collecting and storing cascade artificial lake system and a design method. The system comprises an inlet adjusting desilting basin. The inlet adjusting desilting basin is connected with at least two artificial lakes with anti-collapse layers and anti-seepage layers. The artificial lakes are sequentially arrayed in the height direction to form a cascade and are connected. The lake of the lowest water level is provided with a recession subsystem. For the quite special geological conditions of collapsed loess, when modern anti-seepage and anti-leakage measures are taken, the cascade artificial lakes are adopted on the whole structure of the storing system, the size of each single artificial lake is controlled, and the larger water storage amount is achieved according to the limited bearing capacity of collapsed loess. During water storage flood prevention, aquatic plants and terrestrial plants are cultivated through the artificial lakes, so artificial beach lands and wet lands are formed; an artificial water landscape is established by means of water flow fall, the environment is improved, and places for ornamenting and sightseeing are provided for people.

Description

Technical field [0001] The invention relates to a rain-flood collection and storage cascade artificial lake system and a design method in a collapsible loess area, and is a water conservancy facility and a design method. Background technique [0002] Collapsible loess is widely distributed in parts of northeast, northwest, central and eastern China. The annual rainfall in these areas is not scarce, but more than 60% of the rainfall is concentrated in the three months of July to September, and the temporal and spatial distribution of rainfall and runoff is extremely uneven. The concentrated rainfall is completely destructive to the collapsible loess layer. Collapsible loess is a kind of soil with special properties, with relatively uniform soil texture, loose structure and well-developed pores. When not wetted by water, the strength is generally higher and the compressibility is lower. When wetted by water under a certain pressure, the soil structure will be quickly destroyed, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03F5/10E03F5/14E02B1/00E02B3/16
CPCE02B1/00E02B3/16E03F5/101E03F5/103E03F5/14
Inventor 曾平张丽丽钟莉鲁欣冷艳杰焦剑张婷
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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