路面井口是城市地下各种管线检查井与路面结合的部位。长期以来，城市道路的路面质量一直受到路面井口的困扰，井口周围的平整度、密实度难以保证，往往使井口凸起于路面，甚至在通车一段时间后产生沉降歪斜，而要对其进行校正、维修又是非常困难的。德国斯蒂尔公司开发了一种 Pavement wellhead is a city underground underground pipeline inspection wells and road parts. For a long time, the pavement quality of urban roads has been plagued by pavement wellheads. The smoothness and compactness around the wellheads are hard to guarantee. The wellheads are often raised on the pavement, and even after a certain period of time, sedimentation skew has to be corrected Maintenance is very difficult. A German company Steele has developed