Shield tunneling machine grouting pipeline system and shield tunneling machine thereof

The invention relates to the field of tunnel construction equipment, and particularly discloses a shield tunneling machine grouting pipeline system and a shield tunneling machine thereof. The grouting part comprises a mortar tank, a mortar stirrer mounted in the mortar tank, a grouting pump communicated with the mortar tank, a first controller for controlling the grouting pump to be opened or closed, a grouting pipeline communicated with the grouting pump, four grouting branches, a control unit, a backflow protection unit and a cleaning and recycling system; wherein each of the grouting pipeline and the grouting branch comprises an inner-layer pipe and an outer-layer pipe, the inner-layer pipe is made of a PE material, the outer-layer pipe is made of a metal material capable of being bent and deformed, and the inner-layer pipe is coaxially sleeved with the outer-layer pipe. According to the scheme, the outer-layer pipe has very good deformation and shaping capacity, so that the inner-layer pipe is bent synchr