摘要
非开挖铺设和无砂铺设有许多益处。这些技术比传统的铺设方法可节约费用高达60%,并且有利于环境保护,预期其在今后的应用会越来越普遍。新的铺设技术对于管材及其材料提出了新的要求。新开发的管道系统大部分是复合管。
No-digging installation and Sandbed-free installation have many advantages. Using these techniques can reduce costs of the installations by up to 60% compared with traditional methods. Their use is expected to become increasingly popular in the coming years. New techniques introduce new requirements for pipes and raw materials. Most newly developed piping systems are based on multilayer pipe designs.
