我们在西北、东北几个工地做抽水试验时,曾同时采用缩径管法、三角堰箱法和容积法进行对比试验。其结果表明,缩径管法比较实用、准确、方便。当然,缩径管也可用于空压机抽水试验,但须在缩径管后部另装一个空气分离器即可。 When we did pumping tests at several construction sites in the northwest and northeast, we used the method of reducing pipe diameter, triangular weir box method and volumetric method to carry out comparative tests. The results show that the shrink tube method is more practical, accurate and convenient. Of course, the reduction tube can also be used for air compressor pumping test, but to be installed in the back of the reducing tube another air separator.