The Application and Prospect of Microseismic Technique in Coalmine

Microseismic monitoring technique has been developed for more than 50 years, and has successfully found it application in underground construction, tunnel, reservoir dam, oil production and so on. Because of its successful application in mine disaster prediction, tunnel safety, slope stability, people are getting more and more interested about it. This paper introduced the key technical points of microseismic signal acquisition, analyzed the physical meaning of several microseismic parameters, and introduced the application of microseismic monitoring technique in gas outburst monitoring, water disaster monitoring, rock burst monitoring, coalmine combustion zone monitoring, hydraulic fracturing zone monitoring, analyzed the technical breakthrough points of microseismic technique in each engineering field. Besides, this paper suggested that further studying the characteristic of rock deformation under stretching, compressing and bending stress, and establishing the relationship between rock characteristic and AE signal, investigating the AE signal characteristic of different rock broken pattern, are the developing direction of microseismic technique, and introduced some research progresses in this direction.