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首页> 外文会议>Scientific Conference with International Participation Information-Measuring Equipment and Technologies >APPLICATION OF AN INTEGRATED AND SELF-CONTAINED ELECTROMAGNETIC ACOUSTIC RECORDER FOR MONITORING THE ROCK MASS STRUCTURE AND DEVELOPMENT OF GEODYNAMIC PROCESSES IN ORE MINES
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APPLICATION OF AN INTEGRATED AND SELF-CONTAINED ELECTROMAGNETIC ACOUSTIC RECORDER FOR MONITORING THE ROCK MASS STRUCTURE AND DEVELOPMENT OF GEODYNAMIC PROCESSES IN ORE MINES

机译：集成和自包含的电磁声记录仪在矿石中监测岩体结构及地球动力学过程的发展

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摘要

The paper presents a block diagram of the recorder of electromagnetic and acoustic signals. The recorder provides monitoring of electromagnetic and acoustic signals under changing stress-strain state of heterogeneous materials and rocks. The analog amplifier input sensitivity of electromagnetic signals in 4 channels is 10 μV, that of the electromagnetic signal intensity is 10 μV and that of acoustic signals is 50 μV. The operating frequency range of recording is (1÷100) kHz. The averaging of electromagnetic and acoustic signal amplitudes is performed within 1 or 5 seconds. The data on electromagnetic and acoustic emission materials is recorded in digital format in the internal memory of the recorder. The recorder operates off-line within 7 days. Repeated testing of the recorder in natural conditions of the Tashtagol mine showed that the changes in the amplitude and frequency parameters of electromagnetic signals (EMC) indicate the structural damage in mines made of rocks which differ in their electrical properties. Measurements of the intensity of electromagnetic signals enable monitoring the changes in the stress-strain state of rocks during and after blasting and other geodynamic phenomena.
机译：本文介绍了电磁和声信号的记录器的框图。记录仪通过改变异质材料和岩石的应力 - 应变状态来提供对电磁和声信号的监测。 4个通道中的电磁信号的模拟放大器输入灵敏度为10μV，电磁信号强度的电磁信号强度为10μV，声信号的电磁信号强度为50μV。录制的工作频率范围是（1÷100）kHz。电磁和声信号幅度的平均在1或5秒内进行。电磁和声发射材料上的数据以记录器的内部存储器中的数字格式记录。录像机在7天内离线。在Tashtagol矿的自然条件下重复测试录像机，表明电磁信号（EMC）的幅度和频率参数的变化表明岩石中的结构损坏，其电气性质不同。电磁信号强度的测量使得监测爆破和其他地球动力学现象期间和之后的岩石应力 - 应变状态的变化。

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