Hydraulic coupling triaxial seepage system for detecting erosion rate based on nephelometry

The invention discloses a hydraulic coupling triaxial seepage system for detecting erosion rate based on nephelometry, which comprises a conventional triaxial experimental device, a settling funnel is arranged in a pressure chamber lofting area of the conventional triaxial experimental device, an erosion particle collecting chamber is arranged at the bottom of a pressure chamber, and a plurality of layered screens are arranged at an inlet of the settling funnel. The settling funnel outlet penetrates through the bottom end face of the pressure chamber and communicates with the erosion particle collecting chamber; the erosion particle collection chamber is communicated with the turbidity detection system through the turbidity detection water outlet and used for detecting the turbidity of the suspension liquid, the control device is connected with the turbidity detection system and used for obtaining the turbidity of the suspension liquid and calculating the erosion rate of the cohesive soil, the erosion rate of