Soil Shoulder Blind Ditch System with Concentrated Drainage at the Side of Pavement

Abstract

The invention relates to an earth shoulder blind ditch system for pavement edge centralized drainage. The defects such as water deposited on the pavement, sand barrier, snow barrier, inconvenience in sweeping, conflict with the guardrail position, small capacity, small longitudinal spacing of a draining tank, unsuitableness for small longitudinal slopes and zero longitudinal slope and poor anti-frost property exist in the pavement edge centralized drainage measures. According to the system disclosed by the invention, a cement concrete base is arranged on the roadbed top surface of the pavement edge along the longitudinal direction of the road; the cross section of the cement concrete base is U-shaped; a longitudinal groove is reserved in the groove bottom; a semi-transparent non-sand pipe is arranged at the groove bottom; a permeable pipe wall is arranged on the upper half part; an impermeable pipe wall is arranged on the lower half part; the upper part of the semi-transparent non-sand pipe is filled with graded broken stones to be surface of the roadbed slope. According to the system disclosed by the invention, the water on the pavement can be allowed to flow over to pavement and earth shoulder so as to permeate into the graded broken stone layer and further enters the semi-transparent non-sand pipe to flow along the longitudinal direction of the road so as to be discharged along with the draining tank, the water deposition and sand and snow barrier are avoided, the longitudinal slope adjustment capacity is high, the system can adapt to a small longitudinal slope or zero longitudinal slope road section, and frequent cutting of the side-slope protection project is avoided.

Description

technical field [0001] The invention belongs to the technical field of highway drainage engineering, and in particular relates to an earth shoulder blind ditch system for centralized drainage at the edge of the road surface. Background technique [0002] The technology of centralized drainage at the edge of the road surface is to set up water collection and drainage devices at the soil shoulders at the edge of the roadbed to intercept and discharge the rainwater on the road surface in a concentrated manner. The application of this technology can effectively eliminate the scouring hazard of road rainwater on the fill embankment slope, reduce the pressure of embankment slope protection, effectively reduce the amount of masonry for slope protection engineering, and save engineering investment. [0003] At present, this technology is widely used in domestic highways at all levels. There are two main solutions: ① Set up a raised water-retaining strip on the edge of the road surf...

AI Technical Summary

Problems solved by technology

Both of the above two types of schemes have their own shortcomings. The raised waterstop scheme has road surface water, sand blocking, snow blocking, unfavorable road cleaning, poor frost resistance, small longitudinal spacing of drainage grooves, and is not suitable for small longitudinal slopes and zero longitudinal slopes. Sloping road sections and other shortcomings; the scheme of the road edge water collection tank has the disadvantages of conflicting with the position of the roadside guardrail column, small capacity, small longitudinal spacing of the gutter, poor frost resistance, uncoordinated, easily damaged, and unsafe, and some schemes are designed to increase the capacity. So as to extend the spacing of the drains, even on the premise of changing the top width of the roadbed

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