T/CI 027-2022 Road Design Standards for Dike Landslide Control Project

Scope

Main Technical Content: 1.0.1 When highways traverse areas prone to debris flows, the route should generally be avoided as much as possible. When it is necessary to pass through debris flow areas and the highway is threatened or damaged by debris flows, based on the conditions of debris flow formation, debris flow types, flow characteristics, and sedimentation and erosion patterns, while strengthening monitoring and forecasting, we should adhere to the principles of localized treatment, prioritizing drainage, and combining drainage with protection to actively adopt engineering measures to ensure the safety of highway structures and traffic. When conditions permit, we should utilize biological measures for ecological restoration and comprehensively prevent and control highway debris flow disasters. 1.0.2 The fundamental goal of highway debris flow prevention and control is to prevent or mitigate the damage to highway structures (roadbeds, pavements, bridges, culverts, and protective structures) caused by debris flows, ensure the orderly operation of highway traffic, and meet the needs of disaster relief and rescue road traffic. 1.0.3 The effective scope of highway debris flow prevention and control is generally within the highway maintenance area on both sides of the road, and may be extended to the inner side of the road to facilitate the establishment of effective debris flow interception, drainage, or source control and mitigation measures. 1.0.4 The objects of highway debris flow prevention and control include debris flow disasters, including roadbed subsidence, roadbed gaps, roadbed erosion, suspended reinforced concrete pavement panels, debris flow impact damage to bridge piers and abutments, and debris flow burial of roads. 1.0.5 Highway debris flow prevention and control should follow the physical evolution law of debris flow disasters, effectively control debris flow movement, impact, and burial through engineering measures, and consider the anti-c

Development Information

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