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A cascaded artificial lake system and design method for rainwater collection and storage in collapsible loess areas

A technology of collapsible loess and design methods, applied in chemical instruments and methods, waterway systems, hydraulic engineering equipment, etc., can solve problems such as inadequacies, and achieve the effect of improving the environment

Inactive Publication Date: 2019-01-18
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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  • A cascaded artificial lake system and design method for rainwater collection and storage in collapsible loess areas
  • A cascaded artificial lake system and design method for rainwater collection and storage in collapsible loess areas
  • A cascaded artificial lake system and design method for rainwater collection and storage in collapsible loess areas

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Embodiment 1

[0059] This embodiment is a cascaded artificial lake system for rainwater collection and storage in collapsible loess areas, such as figure 1 shown. This embodiment includes: an inlet regulating grit chamber, which is connected with at least two artificial lakes ( figure 1 Middle artificial lake A, artificial lake B, artificial lake C. limited by cartographic constraints, figure 1 Only 3 artificial lakes are drawn in the figure, but there may actually be 4, 5, or more) connected. The artificial lakes are arranged in sequence according to the vertical height to form ladders and are connected. The lake with the lowest water level also has a retreat. water subsystem.

[0060] The artificial lake system described in this embodiment is designed as a cascaded artificial lake water system structure according to the soil quality characteristics of the collapsible loess area. Because the collapsible loess soil is particularly easy to be cut under the action of water flow, gullie...

Embodiment 2

[0082] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment on the artificial lake. The upstream of the inlet regulating desilting tank in this embodiment is provided with a diversion control subsystem, and the diversion control subsystem includes: a control culvert gate and a culvert gate automatic control subsystem, and the upstream of the control culvert gate is connected to the urban rainwater collection pipe network. The downstream bifurcation of the control culvert sluice is connected with the water regression system and with the inlet regulation desilting tank, as in figure 2 shown.

[0083] The rainwater collected by the artificial lake system can come from cities or other natural environments. In this embodiment, it mainly comes from the urban rainwater collection area. The rainwater is collected into the artificial lake for storage through the urban rainwater pipe network and hardened ground. In the early stage of r...

Embodiment 3

[0094] This embodiment is an improvement of the above embodiment, and is a refinement of the above embodiment about the artificial lake. The artificial lake described in this embodiment includes: a deep water area, a shallow water area, a gentle slope area, and a beach area.

[0095] In this embodiment, according to the different water depths and functions of the artificial lakes in collapsible loess areas, they are divided into four types: deep water areas, shallow water areas, gentle slope areas and beach areas. The specific distribution of each area is as follows:

[0096] 1) Deep water area: the main function is to form a water storage capacity and construct the main lake body in the artificial lake area. In addition to meeting the requirements of slope protection and masonry structure, the stable arrangement of the anti-seepage layer structure of the lake body should also be considered, and it should be arranged in the deep horizontal bottom area of ​​the artificial lake b...

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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 cascaded artificial lake system and design method for rainwater collection and storage 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 rare, but more than 60% of the rainfall is concentrated in the three months from July to September, and the temporal and spatial distribution of rainfall runoff is extremely uneven. Concentrated rainfall is completely destructive to collapsible loess layers. Collapsible loess is a kind of soil with special properties, its soil quality is relatively uniform, its structure is loose, and its pores are developed. When not wetted by water, it generally has higher strength and less compressibility. When soaked by water under a certain pressure, the soil structure will be destroyed rapidly,...

Claims

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Application Information

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Patent Type & Authority Patents(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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