非开挖地下管线修复与更换技术在中国的应用前景

l＇renchless Underground Pipeline Renovation and Replacement ot Technology Prospect in China

改革开放以来，我国大部分城市抓住发展契机都在搞建设，但计划赶不上变化快，地下管道在建设过程中缺乏长远考虑，遗留了诸多问题。当前，部分管道老龄化，破损严重，急需修复与更换。我们国家多采用明挖法进行施工，而国际上很多国家则运用非开挖地下管线修复与更换技术，与明挖法相比有保护环境，不影响交通，施．Y-隐蔽，社会效益高，技术先进等优点。这项技术在我国还处于初级阶段。技术经验不足，大多需要借用国外的设备。由于我国大城市管道陈旧和道路交通拥堵现象日趋严重，发展该技术迫在眉睫。国际上常用的修复技术有内衬插入法，模压内衬法，折叠内衬法，螺旋缠绕法等。这些方法各有优点，而“刮痧法”和“穿衣法”能兼并其中几种方法的优点。在我们国内市场，运用以上方法成功的案例也有，但并未得到推广。非开挖地下管线修复与更换技术出了应用于市政工程外，还可用于石油管线工程，地质工程等，在国内有巨大市场前景。

Since the reform and opening up, in most cities in China to seize the opportunity for development are engaged in construction, but plans to keep up with changes fast, underground pipes during the construction of a lack of long-term consideration, leaving behind a lot of problems. At present, the aging part of the pipeline, badly damaged in urgent need of repair and replacement. Our country to use more open-cut method of construction, many countries in the international use of trenchless underground pipeline repair and replacement of technology, compared with the open-cut method to protect the environment, does not affect traffic, hidden construction, social, advanced technology advantages. This technology in China is still in its infancy, lack of technical experience, most of them need to borrow foreign equipment. Due to the large cities in China pipeline is old and road traffic congestion is worsening and the development of the technology is imminent. On repair technology lined insert molding method of lining, fold lining method, spiral winding method. These methods have their advantages, while the scraping method and dress law merger in which the advantages of several methods.