复杂高海拔GIL山岭隧道热害分析与绿色利用探讨OA

This study systematically evaluates the feasibility of employing energy tunnel technology to mitigate high-temperature thermal hazards in gas-insulated metal-enclosed transmission line(GIL)mountain tunnels located in complex and rugged terrain.Through a review of fundamental concepts of tunnel thermal hazards,combined with case studies and literature analysis,the primary causes of elevated ground temperatures are identified:the combined effects of deep-seated structural heat sources,conductive heat transfer along fractures,groundwater circulation,and locally high geothermal gradients.The study also clarifies the stringent temperature-control requirements for GIL tunnels and highlights the dual challenges of"internal thermal hazards"and"portal freezing hazards"in high-altitude regions.Conventional ventilation-based cooling methods are shown to be energy-intensive and economically inefficient.In response,this paper proposes and assesses the potential of energy tunnel technology,which incorporates heat-exchange pipes within the tunnel lining to actively extract heat from high-temperature rock masses for cooling purposes while transferring the captured heat to portal sections for frost prevention and auxiliary heating—thereby integrating thermal hazard control with geothermal utilization.Although further research is required in system design,groundwater interaction,and intelligent control strategies,the technology demonstrates clear advantages in holistically addressing thermal conflicts and reducing operational energy consumption.In conclusion,energy tunnel technology offers a green and sustainable solution for managing high-temperature conditions in GIL tunnels.It is recommended that pilot implementations be carried out in future projects and that design and control methodologies be further refined to promote practical application.