What are the technical points of highway project engineering analysis?

The engineering analysis should involve the survey and design period, the construction period and the operation period, with the construction period and the operation period as the main factors, and identify the impact sources and impact modes according to the environmental ecology, acoustic environment, water environment, ambient air, solid waste and social environment, and estimate the impact intensity of the sources.

In the stage of survey and design, the project analysis focuses on site selection, route selection and resettlement, detailing the relative position relationship between the project and various protected areas, regional road network planning, various construction schemes, environmentally sensitive areas and possible impacts.

The construction period is the main link of ecological damage and soil erosion of highway engineering, and the environmental impact and ecological damage brought by engineering land, bridge and tunnel engineering and auxiliary engineering (temporary works during construction period) should be considered emphatically. Explain the types and quantities of temporary land lease and permanent land acquisition in the analysis of engineering land, especially the location and quantity of basic farmland occupied; Explain the location, scale, construction method and construction time plan of the bridge and tunnel project; Auxiliary works include access roads, construction access roads, construction camps, work sites, various storage yards and waste residue storage yards. The location, type and area of the temporary land use and restoration plan should be explained, and the problem of topsoil preservation and utilization should not be ignored.

Attention should be paid to the environmental problems caused by the main project behavior during the construction period. For example, subgrade excavation involves the problem of spoil or transportation, subgrade filling needs soil transportation, tunnel excavation involves spoil blasting, sediment dredging and spoil in bridge foundation construction, etc.

During the operation period, traffic noise, "three wastes" in the management service area, linear engineering barriers and landscapes are mainly considered, and at the same time, environmental pollution and risk accidents that may occur during transportation are identified according to the environmental characteristics of the areas along the line and the types of goods that may be transported.

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