人类文明不断发展,科学技术日新月异,人们的生活方式越来越丰富多彩,享受着现代文明给我们带来的实惠。通过电视、因特网,人们可以不出户而了解天下大事。在城市,各种管路和管线把水、电、煤气、热力等通进千家万户。大量的市政基础建设中传统的铺设管线的方式是挖沟、开渠、铺线和回填。随着城市建设规模扩大,出现了年年修 The continuous development of human civilization, science and technology are changing with each passing day, people’s life style is more and more colorful, enjoying the benefits brought to us by modern civilization. Through television and the Internet, people can learn about the world without leaving home. In cities, various pipelines and pipelines bring water, electricity, gas, and heat into millions of households. The traditional way of laying pipelines in a large number of municipal infrastructure constructions is to dig trenches, open channels, line and backfill. With the expansion of urban construction, there has been annual repairs