Short preparation time and urgent start of construction: Urban projects are usually funded by the national government. In order to reduce the disturbance to the daily life of the majority of urban residents, the time requirements for construction are also very strict. It cannot be postponed, and the construction unit often lacks thoroughness to a certain extent according to the construction period and virtual progress plan; the construction site is narrow, and the workload of relocation is large: because the urban pipeline project is generally on the large and small roads in the city However, the demolition work of old and dilapidated houses is very large, and the construction site is relatively small. These factors often affect the environmental sanitation, air quality and traffic of urban construction sections, and bring great influence to the daily life, work and production of the general public. A lot of inconvenience has come, and at the same time, it has also increased. The progress control, arrangement and quality control of road construction projects have greatly increased the difficulty; underground pipelines and lines are complex: in the construction and implementation of urban pipeline projects, there are often encountered In some cases, for example, the location of pipelines such as water supply pipelines, heating pipelines, gas pipelines, power cables, and telecommunication cables is unclear. In the construction of urban pipeline engineering, if the site has high groundwater level, poor soil quality, rainwater, sewage and drainage projects, it is often affected by the geological conditions of the construction site, resulting in significant economic losses and serious social impacts.
