In-situ evaluation method and system for loess collapsibility based on non-destructive time-domain reflection technology

An in-situ evaluation system for loess collapsibility based on non-destructive time domain reflectometry, comprising:

• an acquisition module configured to test a time-domain reflection waveform diagram of an undisturbed loess at a site layout point through the non-destructive time-domain reflection technology, and obtains a dielectric constant and conductivity of the undisturbed loess at the layout point according to the time-domain reflection waveform diagram;
• a calculation module configured to calculate the dry density and mass water content of the undisturbed loess at the site arrangement point in combination with the dielectric constant, electrical conductivity and indoor calibration parameters of the original loess at the arrangement point obtained by the acquisition module;
• and
• an evaluation module configured to perform an in-situ evaluation of the loess collapsibility through a mathematical model based on inputs of an original loess dry density, mass water content and basic physical property indexes calculated by the calculation module.