Method for monitoring surface collapse of shield tunnel by using transient electromagnetic method

The invention relates to the technical field of rail traffic engineering, and provides a method for monitoring surface collapse of a shield tunnel by using a transient electromagnetic method, which comprises the following steps of: 1, arranging a transmitting return wire frame on the surface, and covering a mileage section of the shield tunnel to be detected; 2, recording the coordinate of each angular point of the transmitting return wireframe; 3, arranging a receiving return wire frame in the shield tunnel, wherein the receiving return wire frame is located below the transmitting return wire frame; 4, starting measurement, and observing a secondary field value; and 5, periodically detecting, comparing, analyzing and judging the surface collapse condition of the shield tunnel. Detection can be carried out in the shield tunnel construction process and after operation, the flexibility is higher, and the working efficiency is higher. 本发明涉及轨道交通工程技术领域，提供一种利用瞬变电磁法监测盾构隧道地表塌陷的方法，其包括以下步骤：一、在地表布置发射回线框，将所需探测盾构隧道里程段囊括在内