Method for forming pavement of highway resisting large deformation of ground

Abstract

The present invention relates to a highway road surface forming method capable of resisting ground surface large-deformation. Said method includes the following steps: firstly, laying a layer tension-resisting geotechnical material on the top layer of roadbed, making edge-covering treatment of roadbed two sides whose width range is 30-50 cm on the geotechnical material, then laying broken stone hardcore whose thickness is 10 cm-15 cm on the geotechnical material, according to different non-uniform settlements respectively further laying road surface base layer and surface layer with different sizes, and between the road surface structure plate blocks of every layer filling flexible material with different widths.

Description

technical field [0001] The invention relates to a pavement forming method for an anti-large surface deformation highway, and is especially suitable for preventing and controlling new roads with large surface deformation in uneven subsidence areas. Background technique [0002] In order to meet the social and economic development, people have increased the development and utilization of underground resources, and resources such as coal, oil, natural gas, and groundwater have been continuously extracted from the ground, which will inevitably destroy the underground rock mass. The original stress balance state causes the stress redistribution in the rock and soil body, and the rock stratum moves, deforms and destroys. When the underground mining area reaches a certain range, the movement starting near the stope will expand to the surface, forming a surface deformation zone, and this deformation will directly affect the ground road, causing additional stress and displacement, se...

AI Technical Summary

Problems solved by technology

When the underground mining area reaches a certain range, the movement starting near the stope will expand to the surface, forming a surface deformation zone, and this deformation will directly affect the ground road, causing additional stress and displacement, seriously affecting The normal use of the road, but the current design of the road surface is only designed according to the small deformation specification, its ability to resist deformation is small, and when the surface has large uneven deformation, the existing road cannot meet the requirements of normal use

For such problems, at present, solutions such as road diversion or repeated maintenance are generally adopted, which may cause problems such as occupying a lot of cultivated land, cumbersome procedures, long construction period, and high cost.

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