Rainwater regularized infiltration protection system for collapsed loess area, and construction method

Abstract

The invention discloses a rainwater regularized infiltration protection system for a collapsed loess area, and a construction method. Through arrangement of depressed green areas and waterproof geotextiles, the infiltration amount is maximized while soil safety and stability of collapsed loess below roads are protected; and by use of water storage, infiltration and purification capabilities of the depressed green areas and soil itself, rainfall directly compensates a city underground water system, such that the utilization rate of rainwater is improved, at the same time, the water quality and the water quantity of infiltrated rainwater are ensured, and compared to depressed green areas whose lower portions are completely wrapped, the construction is simple and the economic cost is lower. The protection system is simple in construction and quite low in economic cost, saves more geotextiles compared to conventional laying, and provides a safe and efficient regularized rainwater infiltration protection system of depressed green areas.

Description

technical field [0001] The invention relates to a protection system for rainwater infiltration in sunken green spaces, in particular to a system and a construction method for regularized rainwater infiltration protection in collapsible loess areas. Background technique [0002] In recent years, cities are often hit by heavy rains during the rainy season, and most areas will experience short-term waterlogging, causing serious waterlogging disasters in cities. On the one hand, due to the urban heat island effect, concentrated heavy rainstorms are prone to occur, and the fast and large flow rate of the storm flood peak reduces the runoff confluence time of serious road surface water, and the urban rainwater system has insufficient carrying capacity; on the other hand, rapid urbanization makes the urban surface There are fewer and fewer permeable areas, and the rainwater falls on the road surface and cannot infiltrate. After the rainwater pipes overflow, the rainwater can only c...

AI Technical Summary

Problems solved by technology

At present, under this soil condition, the sunken green space is usually not set up to prevent the damage of the pavement structure caused by the subsidence of the loess caused by the infiltration of rainwater; if the sunken green space is set, it is usually selected to lay geotextiles on all the structural sections of the green space to prevent rainwater from entering Loess, in the above method, there may be no infiltration of rainwater or rainwater cannot penetrate into the underlying soil and require a large number of geotextiles, which is not economical

Images