Trial operation of the first underground comprehensive pipe gallery in Sanya City, Hainan Province

The underground comprehensive pipe gallery in the southern section of the Haiyu East Line in Sanya City, Hainan Province has recently begun trial operation. It is understood that this is the first trial operation underground comprehensive pipe gallery in Sanya City, with a total length of 5,000 meters. The project adopts the mode of "design-purchase-construction-operation-transfer" and the franchise period is 20 years. This section of underground comprehensive pipe gallery is located under the central green belt of the road. It adopts a rectangular three-cabin section, which is divided into gas cabin, water cabin and electric cabin. The corridor pipeline includes water supply pipe, reclaimed water pipe, sewage pipe, gas pipe, power pipe, communication pipeline, etc. "The construction of underground pipe corridors can avoid frequent excavation of the road surface when water, electricity, gas and other units maintain equipment." The person in charge said that the project also set up special channels for pipe corridor operation and maintenance.