Research on the Key Green Elements of"Tunnel-Environment"in Mountain Railway
Research purposes:The complex geological conditions and fragile environment in mountainous areas make the construction of railway tunnels arduous in terms of environmental protection,soil and water conservation,etc.It is imperative to reduce the disturbance of tunnel construction to the regional environment and balance the relationship between tunnel construction and environmental stability.To clarify the key nodes of green coordinated development of"tunnel-environment"and formulate targeted strategies to reduce the adverse impact of tunnel construction on the regional environment,an analysis method of key green elements of"tunnel-environment"in mountain railway based on a multi-layer coupling network model is proposed.Research conclusions:(1)Based on clarifying the interaction relationship of the"tunnel-environment"in mountain railway,build an element system that includes tunnel green,interface,and environmental elements.Using the multi-layer coupling network model,each element is abstracted as the node of the network at different levels,and the organic relationship of each node in and between the network layers is established,which can establish the basis for the quantitative expression of the interaction relationship of the"tunnel-environment".(2)Taking a railway tunnel engineering in a mountainous area as an example,the network node importance assessment method is used to identify seven key green elements:tunnel section size,tunnel excavation length,tunnel blasting mode,tunnel ventilation mode,tunnel lining waterproof design,tunnel grouting and water plugging,tunnel ventilation equipment layout,which should be optimized and controlled.(3)The research results are in line with the engineering practice,and verify the applicability of the model,which can provide a basis for determining the key points to reduce the stress effect of railway tunnel construction in mountainous areas on the regional environment.
railway tunnel in mountainous arearegional environmentmulti-layer coupling network modelkey green elements
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