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冬季施工过程中,有时造成部分采暖、上水等管道冻结现象。我处一九七六年承建的某宿舍工程,由于使用的需要,必须于次年二月上旬交付使用。因此,我们在室外温度较低的情况下进行了供暖、供水的工作。在这期间,由于临时停电致使部分暖卫管道冻结不通,必须迅速化冻,以免管道冻裂。但该工程暖气过门处的回水干管及埋设在地下的自来水管,如果采用刨开地面烘管化冻,则不仅费工费时,增大土建的修补工作量,而且会延长交付使用的时间。为了使这
During winter construction, some pipes, such as heating and water supply, are sometimes frozen. The construction of a dormitory project that I undertook in 1976 must be delivered for use in the first half of February of the following year due to the need of use. Therefore, we performed heating and water supply at low outdoor temperatures. During this period, due to the temporary blackout, some of the warm and sanitary pipelines were frozen and they must be quickly thawed so as to prevent freezing of pipelines. However, the backwater mains of the project’s heating entrance and the underground water pipes buried in the ground will not only increase labor costs, but also increase the amount of civil repair work, and will also extend the delivery time. To make this