Sensing device for rock roof bed separation deformation monitoring

• Main Authors: WANG SHUAI, CHEN XIA, ZHANG BO, LYU SHIZHONG, ZHANG DINGDING, CHAI JING, YUAN QIANG, LIU QI, LI YI, SUN HUANGYU
• Format: Patent
• Language: Chinese; English
• Published: 19.11.2014
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The utility model discloses a sensing device for rock roof bed separation deformation monitoring. The sensing device includes multiple anchor flukes, multiple induction type sensors, a sensor supporting framework and a data acquisition card. The anchor flukes are uniformly distributed in rock boreholes in a rock roof of a roadway or a tunnel. The induction type sensors detect the bed separation deformation at positions where the multiple anchor flukes are distributed. The sensor supporting framework is fixed at a position below the rock roof. The data acquisition card is used for acquiring voltage signals output by the multiple inductance type sensors. The multiple inductance type sensors are all installed in the sensor supporting framework. Each of the multiple inductance sensors includes an iron core, a movable armature, two solenoid coils, a spring horizontally fixed between a vertical support and the movable armature, and a pulley suspended on a horizontal roof. The sensing device adopts inductance type s