Quantitative recognition method for potential slip surface of rock slope

The invention discloses a quantitative recognition method for a potential slip surface of a rock slope. The method comprises the steps of performing distributive temperature detection for the rock at the side slope by the BOTDR/ BOTDA distributed fiber optic sensing technology to obtain the change on temperature of the rock caused by rain permeated; conducting correlation analysis for change on lithology, opening, underground water level and other parameters and the change on the temperature of rock through each monitoring hole in the side slope to determine the rainwater permeating structural plane of the side slope; comparing and analyzing the slip position of the side slope while detecting the distributed deformation to recognize the potential slip surface of the side slope. The method has the advantages of being simple, convenient to operate, safe and reliable; the method is applicable to the determination of the potential slip surface of the rock slope caused by raining.