High-fill embankment drainage blind ditch and construction method

Abstract

The invention discloses a high-fill embankment drainage blind ditch and a construction method. The drainage blind ditch is arranged in an embankment higher than the foundation ground; and the drainageblind ditch is a solid blind ditch constructed by various building stones. The cross section of the solid blind ditch is composed of a mortar rubble layer, a solid blind ditch, a gravel layer, permeable geotextile and a coarse sand layer, wherein the mortar rubble layer is located on the bottom face and built on embankment filling soil, the solid blind ditch is located in the center of a mortar rubble layer foundation and composed of dry rubbles, and the periphery of the solid blind ditch composed of dry rubbles is covered and filled with the gravel layer, the periphery of the gravel layer iscoated with the permeable geotextile, and the periphery of the permeable geotextile is filled with the coarse sand layer. The invention discloses a high-fill embankment drainage blind ditch structureand a construction method. Water can be drained through the solid channel formed by the dry rubble, impurities can be effectively filtered through the permeable geotextile, the drainage channel is not blocked, a good drainage effect is achieved, local materials can be used, construction is convenient, the water permeability is good, accumulated water of a roadbed can be effectively drained, and the stability of the roadbed is kept.

Description

technical field [0001] The invention belongs to the technical field of building engineering construction, in particular to the technical field of road drainage engineering construction, in particular to a high-fill embankment drainage blind ditch and a construction method. Background technique [0002] At present, due to the overfilling of high-fill embankments, the settlement period is short, and the construction period is affected by precipitation and construction technology. Large embankment settlements often occur in the later stages, resulting in embankment diseases. Embankment filling is generally filled with soil and stone, which is greatly affected by water, and unsmooth drainage will cause landslides, which will affect the later operation. [0003] Setting drainage ditches in high-fill embankments is one of the methods to solve poor drainage at present; the existing drainage measures are setting drainage ditches or drainage filter pipes, and setting anti-filter laye...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the overfilling of high-fill embankments, the settlement period is short, and the construction period is affected by precipitation and construction technology, etc., and large embankment settlements often occur in the later period, resulting in embankment diseases

Embankment filling is generally filled with soil and stone, which is greatly affected by water, and poor drainage will cause landslides, which will affect the later operation

[0003] Setting drainage ditches in high-fill embankments is one of the methods to solve poor drainage at present; the existing drainage measures are setting drainage ditches or drainage filter pipes, and setting anti-filter layers on them, which have high construction costs and poor construction quality. Uncontrollable, easily deformed and damaged

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