Is the acropolis larger than the river and smaller than the width of the green line of the river?
Scope of river management. Bailang River is a river with embankments, and its management scope covers the waters between embankments on both sides of the strait, beaches (including cultivated land), flood discharge areas, embankments on both sides of the strait, and berms 5 meters outside the toe of embankments; Greater than the river, less than the river and Baiyang River are all non-dike rivers, and the management scope is within 5 meters outside the river bank line.
Scope of dike protection. It is an extension of the scope of river management, in which the Bailang River is 200 meters, 50 meters larger than the river, and smaller than the river and Baiyang River.
Scope of reservoir management. Design the reservoir area below the beneficial water level line of the reservoir. Outside the toe of the channel section of the main dam of Fushan Reservoir100m, 50m outside the toe of the upstream and downstream slopes in the platform stage and 50m outside the toe of the auxiliary dam; Li Pan Reservoir, Shou Ping Reservoir, Chaijiahe Reservoir and Liu Jia Zhuangzi Reservoir are 30m away from the toe of the dam, 30m away from the tail of the dam and 10m away from the sideline of various buildings such as water diversion and drainage.
Scope of reservoir protection. So as to design the reservoir area between the favorable water level line and the check flood level line. The management scope of the main dam of Fushan Reservoir is 200m, and the management scope of the auxiliary dam is 200m150m; Li Pan Reservoir, Shou Ping Reservoir, Chaijiahe Reservoir and Liu Jia Zhuangzi Reservoir are 70 meters away from the connection area of dam management scope and 250 meters away from the connection area of water diversion, drainage and other buildings management scope.
What are the requirements for river bank greening construction?
(1) Construction is to make preparations before construction according to the design requirements, prepare and implement the construction plan, and carry out the construction until the initial maintenance and completion acceptance are completed.
(2) Before the river greening construction, the design and construction drawings should be carefully studied to understand the design intent; Prepare the construction organization plan and emergency plan in strict accordance with the design requirements; Investigate and analyze the site environment; Do a good job in site arrangement, remove construction waste and toxic and harmful solids and liquids; Necessary protection measures should be taken for the original good waterfront resources, such as natural vegetation, ancient and famous trees, solitary trees in good shape, etc.
(3) Properly handle the sequence of land and water site consolidation projects, arrange the mechanical shifts and access sequence, and avoid the damage to the foundation of revetment and retaining wall caused by construction.
(4) Terrain construction should be based on the vertical design and construction drawings, calculate the conversion coefficient of earthwork volume, and allocate earthwork in a comprehensive and balanced way: according to the design positioning map, calculate the range and quantity of earthwork transportation in water areas and land areas, and determine the running route of traffic flow; It is necessary to clean up the pollution in time to avoid polluting the water body.
(5) Keep loose topsoil with good texture, pile it up in a centralized way, and make full use of it when returning the soil: in order to make the original vegetation grow at an early date, the construction site should be covered with good topsoil; Or choose improved soil or exotic soil to meet the requirements of plant growth. Sludge is the best planting soil for aquatic plants.
(6) The planting of some plants in the water area should be arranged according to the design positioning map, and underwater planting devices, matrix filling and propagators or seedlings should be arranged and installed; The planting depth of aquatic plants should follow its ecological and biological characteristics, and the whole construction process should pay attention to water retention and moisture retention; Prevent plants from lodging after planting.
(7) The planting of some plants on the slope should be carried out at the same time as the revetment construction, and appropriate plant species should be selected according to the revetment type and water level change. Laying planting beds or digging suitable planting holes according to the design positioning map; Take temporary protective measures to control dust and soil erosion.
(8) Some plants in the land area should be planted in suitable planting holes according to the design positioning map, avoiding underground pipelines and underground facilities. In order to prevent surface soil erosion, the surface layer should be covered in time.