Large-scale karst low-lying land hydrophobic structure and construction method thereof

Abstract

The invention discloses a large-scale karst low-lying land hydrophobic structure and a construction method thereof. The large-scale karst low-lying land hydrophobic structure comprises a drainage ditch, a rain storing pool, a drainage gallery and a natural drainage pipeline. The rain storing pool is arranged in the center of the bottom of a low-lying land, drainage ditch, in the middle lower partof the low-lying land, is arranged perpendicular to the contour line, the drainage ditch is connected with the rain storing pool, the side wall of the rain storing pool is connected with the artificial drainage pipeline, the drainage gallery is a non-pressure tunnel, the height above sea level of the natural drainage pipe is less than the center of the bottom of the low-lying land, and the naturaldrainage pipe communicates with the center of the bottom of the low-lying land through a ponor. According to the large-scale karst low-lying land hydrophobic structure, the surface water in the kastelow-lying land is drained out through drainage structures, the rainfall in the low-lying land is gathered through the drainage ditch and the rain storing pool, dredged into the drainage gallery and discharged outside the low-lying land through the drainage gallery, meanwhile the characteristics that the kaste low-lying land natural pipeline is high in flow speed and large in flow amount are used,the underground water in the low-lying land is discharged from the natural kaste pipeline to an underground river system, and problems of waterlogging drainage, dangerous rock prevention, slope failure and the like in the large-scale karst low-lying land are effectively solved through the large-scale karst low-lying land hydrophobic structure and the construction method thereof.

Description

technical field [0001] The invention relates to a large-scale karst depression hydrophobic structure and a construction method thereof. Background technique [0002] Karst is well developed in Southwest my country, and there are carbonate rocks with huge thickness. Under the influence of tectonic movements, large-scale karst depressions often develop in the shape of beads, and there are large-scale underground river systems distributed below them. Sinkholes are commonly found at the bottom of karst depressions, which are connected to underground rivers through natural pipelines to discharge rainfall and catchment water in the depressions. Controlled by climatic conditions, the flood in the depression during the wet season has the characteristics of steep rise and fall, concentrated peak volume, and short peak duration. When the drainage is not smooth, the depression will be flooded. Due to the closed form of karst depressions and the poor communication ability with the out...

AI Technical Summary

Problems solved by technology

At the same time, as the surface vegetation and soil are excavated and cleared, the interception capacity of the surface in the depression is weakened, and the erosion capacity of the surface runoff is enhanced, which is easy to cause disasters such as flooding in the depression, collapse of dangerous rocks, and slippery slopes. Engineering projects cause huge losses

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