The present application relates to a kind of GNSS joint static level instrument monitoring layered settlement method, and different depth target soil layer is respectively drilled and buried settlement steel
pipe, bottom is anchored in corresponding soil layer, top exposes surface;GNSS absolute reference point is set outside monitoring area, and the settlement steel
pipe anchored in stable soil layer is selected as relative reference point in area, top installs GNSS
receiver and
liquid storage tank, the top of remaining steel
pipe installs static level instrument, and connecting vessel
system is constructed by liquid passage, air passage line.Its
advantage is shown in: the present application will core monitoring equipment be all arranged in surface, fault can be directly surface maintenance, equipment can be completely recycled after monitoring, construction difficulty is low, and strong anti construction interference ability;By double reference
system, each soil layer high-precision absolute settlement can be directly exported, adapt
centimeter to meter level large settlement monitoring scene, can be applied to soft soil foundation treatment, foundation pit deformation, roadbed settlement and other types of
engineering monitoring scene.