FIELD: construction.
SUBSTANCE: invention relates to construction and repair of underground gas pipelines laid in a layer of seasonally thawed and freezing soil. In order to exclude the possibility of occurrence of emergencies related to deformation of gas-conducting pipes at freezing of ground waters supplied at sealing unsealing into annular space of the case, arrangement of calcium chloride in the lower part of the case is provided. Amount of calcium chloride is determined taking into account volume of inter-tube space so that its concentration in ground water ensures impossibility of solution freezing at minimum possible temperatures of surrounding soil.
EFFECT: technical result of the invention is to exclude the possibility of deformation of gas-conducting pipes during freezing of ground water in the case, which will provide higher safety of gas supply to consumers during winter period and reduce costs for repair and restoration works.
1 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREVENTING DESTRUCTION OF GAS PIPELINES IN PROTECTIVE CASES | 2022 |
|
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