Water taking gallery of self flow type for underground reservoir

Abstract

This invention relates to a device in hydraulic engineering groundwater extraction, especially a spontaneity underground reservoir of water corridor. There is vertical well in sand stone. Collecting tunnel and diversion tunnel located in the groundwater below the water makes the vertical wells connect from one another. The direction of diversion tunnel is the same to the terrain slope. The diversion tunnel makes the water of vertical well out of the ground. This invention can replace small river valley emerges surface reservoir functions, storing basin of water, so that the groundwater basin rational allocate its resources, its quantity, water wide range of low-cost water, reducing water evaporation. This invention can directly get water in deep coverage river bed, and is appropriate to get water in mountain underground water reservoir.

Description

technical field [0001] The invention relates to a method or device for drawing groundwater in water conservancy projects, in particular to a water intake corridor for self-flowing underground reservoirs suitable for buildings in deep-covered river valleys and submerged overflow zones in arid areas. Background technique [0002] According to the research results of the 21st century water resources strategy in the United States, underground reservoirs are the most important means of regulating water resources in the 21st century. According to research at home and abroad, nature has circulated 12 trillion m of water through the ground for many years. 3 , which is equivalent to 30% of the total surface runoff, while the current water volume adjusted by humans with the help of surface reservoirs is only 2 trillion m 3 , thus it can be seen that there are at least 6 times of water collection capacity underground that is equivalent to surface reservoirs, and it is possible for peo...

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Problems solved by technology

At present, in order to solve the problem of storage and shortage of water resources in the small and medium-sized watersheds of inland rivers in arid areas, the construction of surface reservoirs, technical solutions of electromechanical wells and water intake corridors are only used as auxiliary measures for water resource storage. Although the technical method of the electromechanical well group has the advantages of small one-time investment and convenient control, it needs to use power to lift the water in the well pipe to the ground, the operation cost is high, and the water output of a single well is small. It is conducive to the concentration of water, but it is difficult to input water into the main canal to regulate and store water resources. The technical method of the underground reservoir formed by the existing water collection corridor at the alluvial fan in the front of the mountain has very limited water collection flow and water intake range. The size of the formed underground reservoir is small and cannot effectively replace the function of the surface reservoir. For example, the largest scale of the Kaner well in Xinjiang is 2m 3 / s, the water collection corridor is long, the flow cannot be controlled, and it is difficult to implement it below the sandy gravel aquifer. The existing radial shaft type water collection wells are divided into arrays, and the scale of a single well is generally 0.5m 3 Therefore, although the problems of "dams and the environment" caused by surface reservoirs are very prominent, the one-time investment is huge, and the economy is poor, it is still commonly used in small and medium-sized watersheds of inland rivers in arid areas. storage project mode

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