Method for determining minimum horizontal turning radius of open-type TBM

The invention discloses a method for determining the minimum horizontal turning radius of an open-type TBM. The method comprises the steps of 1 obtaining the preliminary minimum horizontal turning radius of the TBM according to a stoke of a gripper cylinder of the TBM; 2 performing checking calculation and correction on the preliminary minimum horizontal turning radius. The method for determining the minimum horizontal turning radius of the open-type TBM achieves quick accurate calculation of the minimum horizontal turning radius of the open-type TBM and can effectively evaluate a design scheme, avoid the problem that the design does not meet the construction requirement and provide guidance for TBM optimization design.