SURVEY SYSTEM FOR SHIELD TUNNEL SEGMENT

摘要

PROBLEM TO BE SOLVED: To survey in a short period of time a skeleton of a tunnel constructed with a circumferential shield.SOLUTION: A survey system 1 for a shield tunnel segment of the present invention includes a guide rail 4 installed on an inner surface of a tunnel skeleton 3, a moving body 5 disposed on the guide rail 4 to be movable along the guide rail, and an arithmetic processing unit 34. The movable body 5 has mounted thereon an acceleration sensor 32 for measuring acceleration of the movable body, a gyroscope 33 for measuring angular velocity of the movable body 5, and a velocity sensor 31 for measuring velocity of the movable body 5 in relation to the guide rail 4. The arithmetic processing unit 34 calculates a three-dimensional position of the tunnel skeleton 3, using velocity data measured by the velocity sensor 31, acceleration data obtained by the acceleration sensor 32, and angular velocity data obtained by the gyroscope 33.SELECTED DRAWING: Figure 2