Earth pressure balance shield excavation amount accurate weighing device and application method

The invention discloses an earth pressure balance shield excavation amount accurate weighing device and an application method.The earth pressure balance shield excavation amount accurate weighing device comprises a shield tunneling machine and a control console located in the shield tunneling machine, a spiral conveyor and a conveying belt are arranged in the shield tunneling machine, a weighing assembly is arranged between the spiral conveyor and the conveying belt, and the discharging end of the spiral conveyor is located above the weighing assembly; the feeding end of the conveying belt is located below the weighing assembly. The precise weighing device performs static weighing, is reliable in weighing precision, stable in weighing data and free of external interference, can set a weighing fixed value of a metering weighing sensor and adjust the opening and closing period of an openable baffle according to the field shield excavation condition, can understand the relation between the propelling distance an