SYSTEM OF DYNAMIC CONTROLLING ROOF-BASED SEPARATION BASED ON FIBER GRATING AND METHOD OF PRELIMINARY ALERT

摘要

FIELD: radio engineering, communication.;SUBSTANCE: structure includes three parts: a ground-based subsystem of data processing and controlling, an underground subsystem of data transmitting and communicating, and an underground sensor subsystem for data collecting. The ground-based subsystem of data processing and controlling is located in the ground control room and contains a ground-based main controlling computer, a fiber demodulator from the fiber grating and a power supply unit; the subsystem of data transmitting and communicating comprises a transmitting optical fiber for the mines and an optical fiber junction box and an underground sensor data acquisition subsystem comprising, at least, one roof-based separation controlling device based on the fiber grids. Continuous dynamic measurement of the roof section on the network in real time mode is obtained, the condition of changing the rock surrounding the production is obtained, and the acceptability of the anchor support parameters is checked. If the pre-alert threshold is exceeded, a pre-alert signal can be sent accordingly.;EFFECT: possibility of taking timely measures and preventing the collapse of the roof, which is very important for the size of the outer roof section and the stability of the development in the anchoring zone.;3 cl, 3 dwg