Municipal road subgrade drainage structure and construction method thereof

Abstract

The invention relates to a municipal road subgrade drainage structure and a construction method thereof, and aims to solve the problems that when a to-be-repaired road section is located at a positionwith lower terrain, moisture in a surrounding soil layer with higher terrain is easy to permeate into the to-be-repaired road section under the effect of gravity when a foundation is excavated and trimmed, construction is influenced, and the construction quality is reduced. In the scheme, an intercepting ditch is excavated to further lower the terrain, then, the side wall of the intercepting ditch is supported by a baffle and a rubble layer; then, accumulated water in the soil layer in high terrains at the two sides of the intercepting ditch is pumped out through cooperation of a drainage pipe and a water suction pump; underground water in the high-terrain soil layers at the two sides of the to-be-repaired road section descends to the position below the drainage pipe, then backfilling andfoundation finishing are conducted, the proble of water accumulation in the foundation treatment process can be solved, the quality of the road foundation is improved, and the construction period canbe shortened more effectively. Thus, the subgrade drainage structure is beneficial to reducing collapse of the side wall of the intercepting ditch, and accumulated water in the high terrain can penetrate through the rubble layer to enter the drainage pipe.

Description

technical field [0001] The invention relates to the technical field of municipal engineering, in particular to a municipal road embankment drainage structure and a construction method thereof. Background technique [0002] At present, in the process of municipal road construction, when the topographical height difference of new roads changes greatly, the soil located on higher terrains will accumulate water in the soil due to factors such as rainfall, and will slowly pass through the interior of the soil layer due to the terrain difference, and will be collected. Into the soil layer of lower terrain, water accumulation will be formed, which will affect the construction of low-lying subgrade soil, and municipal roads are different from ordinary roads, especially for roads located in the center of the city, most of the roads are on both sides of the road. For side slopes, the accumulated water in the subgrade soil cannot be discharged from the side slopes by traditional method...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: because in the city, if a certain section of low-lying municipal road is renovated, there are often complete roads or house buildings around this section of the road, and there is no space for Vibratory rollers are used for compaction, and the above-mentioned existing technologies cannot be used to quickly infiltrate the accumulated water in the higher terrain, which makes it easy to form accumulated water on the road section to be repaired, affecting the construction effect or prolonging the construction period, so there is room for improvement

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