Maintainable composite drainage blind pipe

Abstract

The invention relates to a combined drainage blind pipe capable of being maintained. The combined drainage blind pipe comprises a double-wall permeable corrugated pipe and a fiber porous C-type core pipe embedded inside the double-wall permeable corrugated pipe. Based on the basic working principle, in geotechnical engineering, underground water containing minerals and other micro-particles flows through the embedded combined drainage blind pipe capable of being maintained for a long time, so that water scales are formed inside the fiber porous C-type core pipe. When the size of the water scales inside the pipe reach a certain degree and hinder drainage of the blind pipe, the water scales inside the pipe are removed through replacing the fiber porous C-type core pipe, and therefore it is guaranteed that the blind pipe achieves long-term smooth drainage. In addition, the replaced fiber porous C-type core pipe can still be used in a circulated mode after the scales are removed through cleaning.

Description

technical field [0001] The invention relates to a maintainable composite drainage blind pipe. Background technique [0002] At present, the drainage blind pipes in geotechnical engineering, especially the drainage blind pipes in tunnel engineering or slope engineering, mostly directly use single-structure permeable pipes or seepage drainage plastic blind pipes. During the long-term seepage and drainage process, minerals and other micro-particles in the groundwater will form scale (or water-alkali) in the blind pipe, which is difficult to remove and maintain. Finally, the groundwater behind the tunnel lining or behind the slope retaining structure cannot be discharged smoothly in time. Cause tunnel lining water leakage or slope instability and deformation and other diseases. Therefore, it is very necessary to arrange a maintainable drain blind pipe. Contents of the invention [0003] The primary purpose of the present invention is to provide a maintainable composite drain...

AI Technical Summary

Problems solved by technology

During the long-term seepage and drainage process, minerals and other micro-particles in the groundwater will form scale (or water-alkali) in the blind pipe, which is difficult to remove and maintain. Finally, the groundwater behind the tunnel lining or behind the slope retaining structure cannot be discharged smoothly in time. Cause tunnel lining water leakage or slope instability and deformation and other diseases

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