Rainy season mountain area airport track subgrade and highway subgrade surface-cleaning method

Abstract

The invention discloses a rainy season mountain area airport track subgrade and highway subgrade surface-cleaning method. The rainy season mountain area airport track subgrade and highway subgrade surface-cleaning method includes the following steps: S1, for the mountain body that needs to be excavated, firstly using an excavator to uproot tree stumps after the felling, then using gums to gather the tree stumps and branches to a temporary spoil ground, and finally manually cleaning grass roots hard to be cleaned by the excavator; S2, if the mountain bodies that need to be excavated are not large in the area and are not connected, artificially spraying the herbicides on the mountain surface; S3, when the filling and the excavation are to be combined, artificially spraying the soil curing agent on the surface of the excavation in advance; and S4, performing dynamic compaction, crushing and vibrating on the filling and the excavation. The rainy season mountain area airport track subgradeand highway subgrade surface-cleaning method enables the originally disturbed loose soil to be easy to compact and stabilize, ensures the compaction degree of the track subgrade and the highway subgrade, eliminates the secondary surface-cleaning work caused by the rainy season, and is low in the cost.

Description

technical field [0001] The invention belongs to the field of airport roadbed and highway roadbed construction, and in particular relates to a surface cleaning method for airport roadbeds and highway roadbeds in mountainous areas in rainy seasons. technical background [0002] During the construction of mountainous airports and highways, when encountering hillsides that need to be excavated, first remove 15-30 cm of topsoil with high organic matter content, including grass roots, tree pockets, and planting layers. The purpose of cleaning the surface is to reduce the corruption of humus in the later stage The consolidation force of the soil decreases, resulting in quality hazards such as uneven settlement. The traditional method is to clean up the topsoil for the first time, and then fill it together after the adjacent fill is up. However, the reality is that when encountering 3- During the rainy weather in October, after clearing the topsoil for the first time, after 1-2 mont...

AI Technical Summary

Problems solved by technology

[0002] During the construction of mountainous airports and highways, when encountering hillsides that need to be excavated, first remove 15-30 cm of topsoil with high organic matter content, including grass roots, tree pockets, and planting layers. The purpose of cleaning the surface is to reduce the corruption of humus in the later stage The consolidation force of the soil decreases, resulting in quality hazards such as uneven settlement. The traditional method is to clean up the topsoil for the first time, and then fill it together after the adjacent fill is up. However, the reality is that when encountering 3- During the rainy weather in October, after clearing the topsoil for the first time, after 1-2 months of rainwater irrigation, the grass roots that were not completely cleaned up began to grow again, and what’s more, the small eucalyptus seedlings also began to grow to more than 1m High, some construction teams will consume manpower and use machinery for secondary surface cleaning, and some construction teams will not be willing to do treatment due to cost reasons, which will not achieve the purpose of completely removing humus soil, and the original soil on the hillside has been disturbed , without the gripping force of the plants, it is loose, and the rolling machine is not suitable for rolling along the slope surface, and the overall soil consolidation ability is unreliable, which will bring quality problems to the subsequent filling body construction.

[0003] It can be seen from the above that there are currently two problems in the cleaning of airport roadbeds and roadbeds in mountainous areas in rainy seasons: 1) the first cleaning is not complete, resulting in a large amount of manpower and mechanical work required for the second cleaning; 2) the original state of the hillside After a surface cleaning disturbance, the soil becomes loose and difficult to consolidate

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