A fast calculation system and method for shield attitude

Abstract

The invention discloses quick solution system and method for a shield attitude, and relates to the technical field of shield attitude solution. Two automatic measurement total stations are adopted; one automatic measurement total station is still arranged in a hanging basket; the other automatic measurement total station is arranged on a top bracket of a shield locomotive cabin which synchronously moves along with a shield tunneling machine; the static total station is used for carrying out real-time tracking measurement on the dynamic total station to obtain an instantaneous coordinate of a measurement station; the dynamic total station is used for monitoring three prisms on a shield tunneling machine body in real time to obtain the coordinate of the shield tunneling machine body under an engineering coordinate system; the data are fed back to a solution center through a wireless communication module; and the solution center is used for calculating conversion parameters between a shield coordinate system and the engineering coordinate system by combining the dip angle data of the shield tunneling machine returned by a tilt meter with the positions of the three prisms in the shield coordinate system according to a joint data solution model for space coordinate conversion, so as to determine the space positions of the head and tail centers of the shield tunneling machine, and comparing the space positions with design positions, so as to obtain the horizontal and vertical deviations of head and tail center points and the attitude angle of a machine body.

Description

technical field [0001] The invention relates to the technical field of shield attitude calculation, in particular to a shield attitude fast calculation system and method. Background technique [0002] The shield tunneling method is often used in the subway construction process, and determining the posture of the shield machine during the excavation process is the prerequisite for ensuring the smooth penetration of the shield tunneling machine. In the actual project, the branch wire measurement method is used to obtain the real-time posture of the shield machine by comparing the actual engineering coordinates of the shield tail and the incision with the design coordinates, including the horizontal deviation of the shield tail, the vertical deviation of the shield tail, the horizontal deviation of the incision, and the incision. There are 8 parameters including vertical deviation, yaw angle, rotation angle, pitch angle and the current mileage of the shield tail. [0003] The ...

AI Technical Summary

Problems solved by technology

However, when the backsight points are relatively close to each other, the coordinate error of the intersected measuring station is relatively large, which affects the accuracy of attitude calculation

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