澳大利亚西部水利管理局使用液氮冷冻土壤,在不阻断火车繁忙运行的铁路干线下埋设了一根污水管道。该干线是澳大利亚佩思铁路主线的一部分,该处土壤主要成份是沙和泥炭,水位很高,采用常规的挖掘地沟的坚固措施是非常困难的。后采用液氮土壤冷冻法同时在铁轨底下形成两道冰墙(如图所示),然后在它们之间挖掘地沟,这样火车能照常在铁轨上运行。 Western Australian Water Authority uses liquid nitrogen frozen soil to bury a sewer line under a railway line that does not block the busy train operation. The main line is part of Australia’s Perth Railway main line, where the soil is dominated by sand and peat and has a very high water level. It is very difficult to adopt the conventional dredging measures. After using liquid nitrogen soil freezing method at the same time in the rail under the formation of two ice walls (as shown), and then digging trench between them, so that the train can run on the track as usual.