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Guarantee measures for winter construction doc

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Update time:
2021-12-17
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Shen Xiaoling
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construction plan
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Brief introduction: 1、 Earthwork
1. When excavating earthwork in winter, thermal insulation materials can be used to cover or the topsoil can be ploughed and harrowed before freezing. The ploughing depth should be determined according to the climatic conditions, generally not less than 0.3m. If the foundation cushion cannot follow the construction closely, the foundation trench shall be covered to prevent the foundation soil from freezing.
2. The machines, tools and methods used for breaking frozen soil shall be determined according to soil quality, freezing depth, performance of machines and tools and construction conditions. When the thickness of frozen soil layer is small, scraper, bulldozer or excavator can be used for direct excavation. When the thickness of frozen soil layer is large, it can be broken by scarifier, frozen soil plow, heavy hammer impact, soil splitting cone (wedge) or blasting method.
3. When excavating earthwork in winter, if freezing damage may occur to the foundation of nearby buildings or other underground facilities, anti freezing measures should be taken.
4. When the frozen soil is abandoned on the upper side of the excavation, the distance from the slope angle of the dump to the upper edge of the excavation shall be the distance specified under normal temperature conditions plus the height of the dump.
5. In winter construction, anti-skid measures should be taken for transportation machinery and road to ensure safety. Thermal insulation and anti freezing measures shall be taken for mechanical equipment that may be damaged due to freezing.
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