Abstract
Microseismic monitoring technology can start from the most initial stage of rock deformation and track and monitor the progressive failure process of rock mass from the fracture of rock blocks to the instability of rock mass. Thus, the scientific nature of monitoring work is greatly promoted, and the accuracy and advance of the prediction of engineering and geological disasters are improved. In this paper, the fracture and instability of rock can be analyzed by analyzing the microseismic signals produced by rock failure; The location of microseismic source can be determined by multipoint synchronous data acquisition to determine the time when each sensor (at least 5) receives microseismic signals; Combined with practical engineering experience for underground engineering in growth, heading tunnel, put forward only sensor arrangement to take mobile, follow the semienclosed layout network. We hope to give some reference to the researchers who are concerned with microseismic monitoring technology.
Highlights
In recent years, microseismic technology has been gradually used as an early warning method for underground engineering safety monitoring and has conducted research on related microseismic activities
According to the rock block test conducted by the laboratory and the actual monitoring results at the mine site [15], the acoustic emission and microseismic signals of the rock mass have the following obvious characteristics: (1) the signal is random and nonperiodic; (2) the signal frequency range is very wide, and the upper limit can be as high as tens of thousands of hertz, or even higher; (3) the signal waveform is different, and the energy disparity is large; (4) the amplitude quickly attenuates with increasing distance
If a certain number of sensors are arranged around the source with a certain degree of network to form a sensor array, and when acoustic emission and microseisms occur in the monitoring body, the sensor can pick up the signal and convert this physical quantity into a voltage quantity or a charge quantity
Summary
Microseismic technology has been gradually used as an early warning method for underground engineering safety monitoring and has conducted research on related microseismic activities. The microseismic monitoring technology is still in the primary stage of application in China, resulting in its accuracy cannot meet the requirements of precise positioning of mine rock mass fracture, and lack of fast microseismic positioning and tracking monitoring required by microearthquake for accurate positioning of mine rock mass fracture. It will be the key and research focus of microseismic monitoring technology to explain and deal with mining problems in the future. It is hoped that this paper can provide some reference for the relevant personnel who study microseismic monitoring technology
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
