Metro Engineering Project Schedule Optimization Based on Wireless Network Communication and BIM Model Algorithm

Table 2

Number of main projects.

	Engineering	Unit	Quantity
Earthwork engineering	Excavation	m^3	612977
	Fill		835820
	Desilt		698211
	Subgrade earthwork		931880
Foundation treatment engineering	Precast concrete pipe pile	m	105523
	Track jet grouting pile		138480
Track engineering	Track laying	km	7.9
	Lay a railway track	Group	28
	Integral track bed	m^3	964
	Gravel track bed	m^3	12869
—	Dynamic lighting	m^2	156800
	Fire-fighting
	Drainage
	Ventilation works