论文部分内容阅读
随着管道施工技术的不断发展,一种专门用于管沟细土回填的机械已在欧美国家得到广泛使用。管沟细土回填机的出现,改变了传统的用人工筛土进行管沟细土回填的施工方法。特别是自行式管沟细土回填机在石方段的管沟回填中更有其独特的优点。如该机械有粉碎岩石和振动筛土的功能,在钢质管道管沟细土的回填施工中,既可满足管底、管顶对细土回填厚度及粒径的要求,工作效率大大提高,节省了远距离外运细土的机械和人工筛细土的人力,同时对保护环境也极为有利。
With the continuous development of pipeline construction technology, a special machine for trench filling backfill has been widely used in Europe and the United States. The emergence of trench dredger backfill has changed the traditional method of construction of fine trench backfilling with artificial soil. In particular, the self-propelled trench dredger backfill in the stone section of the ditch backfill also has its unique advantages. If the machinery has the functions of crushing rock and vibrating screen soil, in the backfilling construction of the fine soil in the steel pipe trench, the requirement of the bottom and top of the pipe for the thickness and particle size of the fine backfill can be satisfied, the work efficiency is greatly improved, It saves manpower for mechanical and artificial sieving of fine soil for long distance transportation, and is also very beneficial for the protection of the environment.