Expansive soil cutting structure and construction method thereof

Abstract

The invention discloses an expansive soil cutting structure. The expansive soil cutting structure comprises a pavement, waterproof geotextile and a roadbed which are in sequential arrangement from top to bottom, wherein a side slope provided with an intercepting ditch on the top is arranged on the side surface of the roadbed; anti-seeping geotextile is arranged between the side slope and the intercepting ditch; the slope surface of the side slope is provided with a side slope water seeping layer; a basic water seeping layer, a gravel soil layer, an expensive soil layer and a non-expensive clay layer are arranged between the side slope water seeping layer and the roadbed; the bottom of the basic water seeping layer is provided with at least one seeping ditch; a two-cloth one-film sealing layer and a water discharge pipe with holes are arranged in the seeping ditch; and a geogrid is arranged in the gravel soil layer and the expensive soil layer. A construction method comprises the following steps of performing side slope overexcavation; digging the bottom foundation of the basic water seeping layer; digging the seeping ditch; laying the two-cloth one-film sealing layer, and distributing the water discharge pipe; filling and building a basic water seeping layer and the side slope water seeping layer; filling and building the gravel soil layer and the expensive soil layer; trimming the slope surface of the side slope, and laying the planting soil layer; and arranging the intercepting ditch and the anti-seeping geotextile. The expansive soil cutting structure and the construction method well solves the road repair problems in an expansive soil region, and great popularization values are realized.

Description

technical field [0001] The invention relates to a road cutting structure and a construction method, and more specifically relates to an expansive soil road cutting structure and a construction method thereof. Background technique [0002] Soil erosion is currently the largest and most concerned ecological environment problem in the world. In recent years, due to large-scale infrastructure construction, China has become one of the countries with the most severe soil erosion in the world. There are many reasons for soil erosion, and in recent years, the amount of soil erosion caused by road construction has accounted for a considerable proportion in China. The wide range of influence and the degree of damage are gradually causing local governments and engineering technology along the road construction to attention of personnel. [0003] China is one of the countries with the widest distribution of expansive soil in the world. Due to the special engineering geological propert...

AI Technical Summary

Problems solved by technology

At present, the rapid development of highway construction and the rapid extension of the road network to mountainous areas and western regions have made the problem of expansive soil in highways more and more prominent. Every cut must be slippery", seriously affecting the progress and image of the project

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