Advanced geological forecast system of shield tunneling machine

The utility model discloses an advanced geological forecast system of a shield tunneling machine, which is applied to the technical field of engineering construction. Comprising a shock excitation device, a sound wave receiving device, a 24-channel optical fiber demodulator and a data processing terminal, wherein the shock excitation device comprises a hob vibration source arranged at the front end of the shield tunneling machine main body and an impact hammer vibration source which is a preset distance away from the hob vibration source, so that a two-way vibration source with two-side excitation is formed; the sound wave receiving device comprises a plurality of three-component sound wave optical fiber seismic sensors, a plurality of signal acquisition stations and a base station; the three-component sound wave optical fiber seismic sensors are arranged between the hob seismic source and the impact hammer seismic source and are used for receiving reflected wave signals; the 24-channel optical fiber demodula