在浇制钢筋混凝土圈梁中,如果电工预埋的电线管进水,管内积水遇到严寒便会结成很长的“冰棍”(见图1),这就给电工扫管、穿线造成了困难。这种情况在我国北方冬季施工中容易出现。遇到这种情况,怎样才能将管中“冰棍”很快取出,进行扫管、穿线呢?这里介绍一个较为巧妙 In cast-in-place reinforced concrete ring beams, if an electric wire pipe embedded in an electrician enters the water, the accumulated water in the pipe will form a long “ice stick” when it encounters severe cold (see Figure 1). Drawstrings cause difficulties. This situation is prone to occur during winter construction in northern China. In such a case, how can I quickly remove the “ice stick” from the tube and carry out sweeping and threading? Here’s a clever introduction.