Method for filtering flood by sand land

Abstract

The invention discloses a method for filtering the flood by sand land. The method comprises the steps as follows: firstly, a canyon zone suitable for damming is selected for flood detention dam construction, and a gully is excavated in the position with a 300-500 m distance below the flood detention dam and parallel to the direction of the flood detention dam; then, a plastic pipe for leakage is selected, leakage holes are formed in pipe wall, and a valve is arranged at an outlet in one end of the plastic pipe; and the plastic pipe is paved forwards along the bottom of the gully to form an underground leakage drainage pipeline, pebbles, broken stone and / or sand grains are placed on the periphery of each leakage hole in the pipe wall, the pipeline is buried after pavement, and when water is required, all that is required is to turn on the valve to discharge the underground water. With the adoption of the method, the utilization efficiency of upstream flood is effectively improved, demands for water for downstream production and life are met, the water is clear, mineral content is high, the influence of uneven rainwater and water shortage in a dry season is reduced, the harmless utilization of the flood resource is realized, and the method is particularly suitable for being popularized and used in arid and semi-arid desertification areas.

Description

technical field [0001] The invention relates to a flood filtering method, in particular to a flood filtering method using sand to obtain clean drinking water, and belongs to the field of disaster prevention and mitigation. Background technique [0002] my country is a country with frequent natural disasters, and it is also a country with shortage of water resources, sparse vegetation and extremely fragile ecological environment. In the vast arid and semi-arid areas of Northwest China, rainfall is rare and mostly concentrated in July-September, and the annual precipitation is extremely uneven. Precipitation mainly occurs in the form of torrential rain, which can easily cause flood disasters such as floods and mudslides, causing great harm to the industrial and agricultural production of local people. [0003] In order to prevent and control floods in desertified areas and solve the water shortage of local residents, scholars at home and abroad have done a lot of research on ...

AI Technical Summary

Problems solved by technology

However, these studies focus on theoretical discussion and lack of practical experience. In particular, the research on the effect of vegetation restoration on sand-resistance and sand-fixation is very active. However, there is a lack of full consideration and research on how to reduce flood disasters in arid areas and improve and increase flood utilization efficiency. Regional flood disasters are difficult to cure, and it is difficult to fundamentally improve the production and living water of local residents