Ventilation and Humidity Control in Underground Utility Tunnel: an Under-Studied Topic_Crimson Publishers
Background Underground utility tunnel refers to a passage built underground to accommodate two or more types of urban engineering pipelines, including water supply pipes, sewer pipes, steam, gas, electricity, fiber optics, television cables, telephone cables, etc. It allows not only comprehensive utilization and resource sharing of underground space but also an easy and safe access to these service infrastructures for regular inspections and maintenance that would otherwise require recurring street works in the case of direct burial trenches, impacting on traffic, business, and environment. The initial investment is high but can be compensated by later benefits in maintenance. Modern municipal utility tunnels can be dated back to 1850’s when Paris built its first man-accessible tunnel that hosted water supply, sewage, and compressed air pipelines [1]. Since then many cities have embraced the ideas of utility tunnels to improve the quality of municipal services and city resilience. For ...