SYSTEM FOR MEASURING A PRECEDING SUBSIDENCE OF THE FRONT OF A TUNNEL FACE AND ITS METHOD

摘要

The present invention is connected at regular intervals a plurality of after inserting drill a hole to a measuring apparatus equipped with a tilt sensor at a predetermined angle from the ceiling of the tunnel face front, a data logger, or by using a distant main terminal slope from said measurement device for reception by a change of the sensor in order to measure the prior settlement information of the tunnel face the front, the front tunnel face prior relates to subsidence measurement system and method. The present invention to achieve this in the tunnel face forward prior settlement system, a tunnel face 400 is inserted into a front ceiling 410 yirumyeonseo the ceiling 410 and the predetermined angle of the measurement to measure the tunnel face forward prior subsidence device 100; And a data logger (200) for outputting by receiving the tunnel face forward prior settlement information measured by the other hand, the measuring device for transmitting a control signal requesting the tunnel face forward prior settlement information to the measurement device.