The Development of Rock Failure Electromagnetic Emission Monitoring System
(0) The research about electromagnetic emission (EME) during rock failure is very important to earthquake prediction and mine safety.A corresponding monitoring system has been developed according to the characteristics of EME signals during rock fracture,which include a wide frequency band and small amplitude of the inductive signals.The system is constituted by electromagnetic induction probe,signal-conditioning circuit and a computer for data acquisition.Among them,the electromagnetic induction probe can detect spatial magnetic field changes in a certain direction and convert it into electrical signals,the signal-conditioning circuit can magnify,filter and isolate signals acquired by the probe,and the computer for data acquisition is used for recording and displaying the detected signals.Several testing results have been achieved in rock failure experiments on marble that are carried out both by mechanical loading and expansion caused by chemical agents.
rock failure electromagnetic emission electromagnetic induction signal-conditioning circuit LabVIEW programming
HUANG Song-ling ZHU Fu-rong ZHU Hong-xiu WEI Zheng WANG Shen
State Key Lab of Power Systems Department of Electrical Engineering, Tsinghua University,Beijing 100 School of Mechanical Electronic & Information Engineering, China University of Mining & echnology Be
国际会议
济南
英文
401-406
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）