Intelligent Generation and Analysis of the Municipal Road Construction Scheme Based on the KNN Algorithm

Table 1

Excavation and filling scheme of soil subgrade.

Method name		Construction methods	Features
Soil subgrade filling	Layered filling	The subgrade cross section is layered and filled layer by layer from bottom to top.	The required compaction and stability can be obtained separately for each layer of soil.
	Vertical filling method	Vertical layered filling from the edge of the subgrade to the center line of the road.	It is suitable for filling deep valleys, steep slopes and ponds with large height and small horizontal area.
	Mixed fill method	After the subsoil is filled vertically, the upper soil is filled horizontally in layers.	It is suitable for high filling height and large filling volume, so that the upper soil of each layer can obtain better compaction degree.
Soil cutting excavation	Lateral full-width excavation method	After the subsoil is filled vertically, the upper layer is filled horizontally in layers. When the excavation depth is large, the excavation can be divided into multiple steps and layers.	The excavation height is controlled at about 2 m, which is suitable for projects with large lateral sags.
	Vertical excavation	Layered longitudinal excavation method: Excavate in vertical layers according to the degree of road along the road.	Suitable for projects with large excavation depths.
		Channel longitudinal excavation method: Excavate the channel longitudinally on the center line of the road and continue to excavate from there to both sides. The channel can be used for drainage or passage.
		Segmented longitudinal excavation method: excavate openings at multiple locations along the road, divide the road into multiple segments and excavate longitudinally.
	Mixed method	After longitudinal excavation of the channel, the horizontal full-width excavation method can be used to excavate, or the lateral channel can be excavated and widened on the basis of the longitudinal channel.	It is suitable for large excavation volume and can improve the efficiency to a certain extent compared with the single excavation method.