Sound wave detection device and shield tunneling machine thereof

The utility model discloses a sound wave detection device and a shield tunneling machine thereof. The device comprises a sound wave transmitting mechanism and a sound wave receiving mechanism which are arranged on a cutterhead, the cutter head is provided with a plurality of concentric circles, the circle centers of the concentric circles coincide with the center of the cutter head, the sound wavereceiving mechanism comprises at least one set of sound wave receiving assembly, the same set of sound wave receiving assembly is arranged on the same diameter of the cutter head, and the sound wavereceiving assembly comprises a plurality of sound wave receivers. The number of the sound wave transmitting mechanism is at least one, and the sound wave transmitting mechanism and the sound wave receiver are both connected with the control system. The sound wave transmitting mechanism and the sound wave receiving mechanism are arranged in a simple and regular manner; it can be guaranteed that transmitted signals effective