How construction of a severe weather factory in Russia started

How to start the construction of a bad weather factory in Russia is as follows:

1. Earthwork projects should be avoided as much as possible during winter construction. If construction must be done in winter, the construction methods should be compared technically and economically. Sure. Make full preparations according to the determined construction methods to ensure continuous construction.

2. During winter construction, anti-skid and fire prevention measures should be taken on transportation roads and construction sites.

3. For earthworks excavated in winter, in order to prevent the soil from freezing, the topsoil method, snow covering method, insulation material covering method, and greenhouse method can be used according to local conditions to prevent the soil from freezing. Keep warm.

4. If frozen soil needs to be excavated in winter, methods such as pyrotechnic baking, steam melting, and electrical heating can be used to defrost the soil according to the depth of soil freezing and actual conditions. Excavation can be done after the soil has melted. If there are no freezing conditions, manual, mechanical, blasting and other methods can be used to excavate.

5. It is not advisable to replace the foundation with soil during winter construction (such as replacing artificial backfill with mixed soil, silty clay, etc. with sand and gravel cushions and lime soil cushions). If soil must be replaced, non-freezing sand, stone and soil should be used, and construction should be carried out under the condition that the ambient temperature is not lower than -5℃.

6. For frost-heaving soil, if the foundation has been frozen, the frozen soil layer should be removed entirely, or the frozen soil layer should be melted and compacted carefully. For non-frost heaving soil, the frozen soil layer should also be melted before the next construction process can be carried out.

7. When backfilling earthwork in winter, the thickness of each layer of soil should be reduced by 20-25% compared to normal temperature construction. The amount of reserved settlement should be increased compared with conventional construction.

8. The good soil excavated during winter construction should be piled up and covered to prevent it from being frozen and affecting the backfilling. All kinds of backfilling should be arranged to be completed before winter.