Cccc National Engineering Research Center of Dredging Technology and Equipment Co., Ltd.

Jingdun Pang

Qing Xu

Yi Wu

Hongsheng Zhang

Yuanquan Miao

Weihao Song

Yanxing He

Jiandong Zhou

A calculation method for measuring the flatness of cross-section of a tunnel segment, comprising: mounting laser displacement sensors on a thrust cylinder assembly plane of a tunnel boring machine, an emitting laser beam of each sensor being parallel to an axis of a cylinder, being perpendicular to the propulsion cylinder assembly plane, and pointing to the end surface of a segment ring to be tested; the intersection of the straight line where the laser of each laser displacement sensor is located and the propulsion cylinder assembly plane is referred to as a base point P; the intersection formed between the laser of each laser displacement sensor and said segment ring is referred to as a measurement point P'; the corresponding spatial coordinates of each base point are represented by P(x,y,z); the corresponding spatial coordinates of each measurement point are represented by P′(x′,y′,z′); a rear shield axis vector n=(x,y,z).

Calculation method for measuring flatness of cross-section of tunnel segment based on spatial point-to-plane relation

Growing community of inventors

Shanghai, China

Jingdun Pang