用虹吸管来进行排水,是极为简便经济的,既不需水泵等设备,又不需燃料或电能。其应用范围;是排水区域的附近,有比预定动水位还要低的低地,如峡谷、湖泊等。但以前人们对虹吸管的应用条件,又加上了一条限制:就是不能把水吸到10米以上,因此,利用它来排水时,矿坑不能深于10米。理由据说是虹吸管中水之所以会流动,是受了大气压力的作用,而一个大气 Draining with a siphon tube is extremely simple and economical. It does not require equipment such as water pumps, nor does it require fuel or electricity. Its scope of application; is near the drainage area, there are lower than the scheduled level, such as valleys, lakes and so on. But in the past, people imposed a restriction on the application conditions of siphons: they cannot draw water to more than 10 meters. Therefore, when using it to drain, the pit cannot be deeper than 10 meters. The reason is said to be that the water in the siphon will flow because of the atmospheric pressure and the atmosphere