What is the content of three-level monitoring alarm for foundation pit engineering?

Monitoring and alarm of foundation pit engineering level 1 1: the surrounding environment conditions are very complicated and the damage consequences are very serious, and the depth of foundation pit is h "; 12M, the engineering geological conditions are complex, the groundwater level is very high, and the conditions are complex, which seriously affects the construction.

2. Secondary monitoring and alarm of foundation pit engineering: The surrounding environmental conditions are complex and the damage consequences are very serious. The depth of the foundation pit is 6M3, and the level III monitoring alarm of the foundation pit project: the surrounding environmental conditions are simple, the damage consequences are serious, the foundation pit H≤6M, the groundwater level is low, and the conditions are simple, which has little impact on the construction.