CAVE-IN MONITORING SYSTEM OF TUNNEL, CAVE-IN MONITORING METHOD OF TUNNEL, AND DAMAGE MONITORING SYSTEM OF CIVIL ENGINEERING STRUCTURE

摘要

A cave-in monitoring system of a tunnel and a damage monitoring system of a civil engineering structure, comprising a network (3), a plurality of conductive coating patterns (4), a plurality of sensor net terminals, a plurality of relay base station terminals (7) provided in an existing facility (6), a route base station terminal (8), and a remote monitor (9). The inner wall face (2) is coated with the conductive coating pattern (4) which is then applied with a specified voltage from the sensor net terminal (5). Consequently, a current flows through the conductive coating pattern (4). When the inner wall face (2) is partially cracked and the conductive coating pattern (4) is broken at least partially, the resistance increases to lower the current level. The current level data is measured by means of the sensor net terminal (5) and transmitted from the sensor net terminal (5) to the remote monitor (9) trough the relay base station terminals (7), the route base station terminal (8), and the network (3). The remote monitor (9) estimates a cracking point from the current level data and displays the estimated point.