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A method for road rain harvesting and greening in semi-arid areas

A semi-arid and highway technology, applied in waterway systems, buildings, water supply devices, etc., can solve the problems of high maintenance costs, failure to consider the use of precipitation resources, and failure to consider the use of rainwater, so as to save maintenance costs and save greening maintenance. cost effect

Active Publication Date: 2022-03-22
BEIJING FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in road design, the rainwater on the road surface generally enters the road drainage system, and then is discharged into the natural drainage system, and the utilization of rainwater is not considered.
At the same time, the utilization of precipitation resources is not considered in the greening design
[0004] In view of the lack of water resources in semi-arid areas, road greening often needs to be irrigated with water, and the maintenance cost is high, and the limited rainfall resources have not been effectively used

Method used

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  • A method for road rain harvesting and greening in semi-arid areas
  • A method for road rain harvesting and greening in semi-arid areas
  • A method for road rain harvesting and greening in semi-arid areas

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Embodiment Construction

[0033] The present invention provides following technical scheme: comprise the following steps:

[0034] Step 1. Collect local basic data, including meteorological data, main greening tree species, soil type, soil physical and chemical properties, etc.; rainfall data, mainly based on hydrological manuals of local provinces and cities. The main local greening tree species. The physical properties of the soil, such as porosity, permeability coefficient, etc.

[0035] Step 2. Analyze the basic data and calculate the rainfall at different frequencies respectively. The main design frequency includes the once-in-a-half-year rainfall P 0.5 , once a year rainfall P 1 , rainfall P once every three years 3 and the once-in-five-year rainfall P 5 ;

[0036] According to the hydrological manual, the rainfall with different frequencies and duration were obtained. The design rainfall can be calculated by using the rainfall-period-frequency curves (referred to as frequency curves (refer...

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Abstract

The invention discloses a method for rain collection and greening of roads in semi-arid areas, which includes collecting local basic data; analyzing the basic data, and calculating sub-rainfalls of different frequencies respectively; selecting road greening plant species, using S i Indicates that i represents the i-th plant; according to the plant species, determine the daily average water demand of a single plant in the growing season to determine the rainfall M that can be collected per unit area of ​​the road surface; determine the specification of the rain collection tree pool; determine the minimum number of tree pools and Tree species spacing; solve the problem that the rainwater on the road surface usually enters the highway drainage system, and then is discharged into the natural drainage system without considering the utilization of rainwater; at the same time, the utilization of precipitation resources is not considered in the greening design; for water resources in semi-arid areas Insufficient, road greening often needs to pull water for irrigation, the maintenance cost is high, and the limited rainfall resources have not been effectively used and other technical problems.

Description

technical field [0001] The invention relates to rain collecting and greening technology, in particular to a method for rain collecting and greening of highways in semi-arid areas. Background technique [0002] The rain-harvesting greening technology is based on the use of runoff, and uses the reasonable temporal and spatial distribution of rainfall resources as a means. In the climate environment of arid and semi-arid regions, rain-harvesting technical measures can be used to create a relatively suitable soil and water environment for tree growth. Use extremely limited precipitation resources to establish plantation ecosystems that are difficult to achieve in the natural state. [0003] At present, in highway design, rainwater on highway pavement generally enters the highway drainage system and then is discharged into the natural drainage system, without considering the utilization of rainwater. At the same time, the utilization of precipitation resources is not considered ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00E03F5/04E03F5/10
CPCA01G17/005E03F5/0401E03F5/0404E03F5/101
Inventor 齐实伍冰晨张瑞宾
Owner BEIJING FORESTRY UNIVERSITY
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