Joint landslide monitoring system and method

A joint landslide monitoring method, comprising:

• continuously emitting, by a high-frequency electromagnetic wave monitoring module, electromagnetic wave signals into a monitoring area through a transmitting antenna, and scanning space of the monitoring area with emitted waves by changing a phase distribution on an aperture of the transmitting antenna;
• amplifying signals received by a receiving antenna and performing interference processing on the amplified signals to obtain target signals;
• and obtaining surface deformation information of the monitoring area according to a phase difference of the target signals, wherein the surface deformation information comprises a position of a landslide mass and landslide velocity information;
• propagating, by a low-frequency seismic wave monitoring module, seismic waves downward from a ground surface in the monitoring area, and receiving reflected waves from a creeping medium that the seismic waves encounter, wherein the reflected waves continue to propagate downward after reaching the ground surface;
• obtaining frequency-domain interference characteristics of internal creeping in the monitoring area according to the reflected waves received in multiple times;
• and determining, according to the frequency-domain interference characteristics, a longitudinal force on a 3D stratigraphic landslide mass shear surface in the monitoring area;
• and
• collecting, by a cloud platform, the surface deformation information sent by the high-frequency electromagnetic wave monitoring module and the longitudinal force on the 3D stratigraphic landslide mass shear surface sent by the low-frequency seismic wave monitoring module;
• determining a maximum subsidence amount and a subsidence velocity of the monitoring area according to the surface deformation information and the longitudinal force on the 3D stratigraphic landslide mass shear surface collected within a same period of time;
• and issuing alert information when the maximum subsidence amount exceeds a subsidence amount threshold or the subsidence velocity exceeds a subsidence velocity threshold.