A way to restore dry rivers

Abstract

The invention discloses a method for recovering a dried-up river. The dried-up river is recovered with underground flow which is naturally formed or artificially manufactured serving as a water source. The method includes the following steps of firstly, constructing a reservoir; secondly, constructing the underground flow; thirdly, selecting the construction river reach; fourthly, conducting construction on the river reach. The underground flow can be intercepted by constructing an underground water intercepting wall and an overflow dam, the underground flow can then flow in the reverse direction along a fence defined by the water intercepting wall and the overflow dam and raised to the portion above the river bottom, and water flow raised to the portion above the river bottom flows in the reverse direction along the water intercepting wall, backflows by a distance till the water level rises to the topmost end of the overflow dam and then flows downward along the overflow dam to form a flowing river. The method is particularly suitable for recovering the seasonal dried-up river in the area where seasonal rainfall is unbalanced. The method is low in cost, no existing water resources need to be consumed, the underground flow is supplied by a reservoir water source all the year round, clay laying and replacing are adopted, and therefore the water retention capacity of the river channel is improved. A garden wetland landscape is constructed, and the living environment of people is beautified.

Description

technical field [0001] The invention relates to a method for restoring dry rivers, especially for seasonal rivers in regions with uneven seasonal precipitation. It can restore dry rivers, create wetland landscapes, and beautify people's living space. Background technique [0002] Affected by the climate, especially in northern my country where the seasonal precipitation is uneven, there are many seasonal rivers. These rivers only have water in the rainy season and dry up in the dry season. Reservoirs have been built in the upper reaches of rivers in many areas to collect rainwater in the rainy season and use it for irrigation and urban water supply in the dry season when water resources are scarce. The seepage of the reservoir is inevitable. When the underground surface of the reservoir and the river is a seepage layer that is easy to seep, and the lower layer is a water-retaining layer that is not easy to seep, a subsurface flow will be formed along the river between the s...

AI Technical Summary

Problems solved by technology

[0004] Existing methods to restore dry rivers usually use reservoir water diversion and groundwater replenishment, etc. These methods usually require a large amount of engineering, consume limited water resources or power resources, and are expensive and wasteful of resources.

Images