Coal mine underground micro-seismic monitoring sensor arrangement method based on P-wave incident direction
A technology for incident direction and microseismic monitoring, applied in seismology, mining equipment, mining equipment and other directions for logging records, can solve the problems of inconsistency, inability to give, and not considered in engineering, to improve monitoring accuracy and, Guaranteed effect of space layout, simplified modeling and calculation process
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[0047] (1) There is a risk of roof fall in the next area of a coal mine. In order to ensure the safety of underground mining, it is planned to introduce a microseismic monitoring system to monitor the area. The first batch is planned to be in the cube area A with side length of 100m 1 B 1 C 1 D. 1 - 4 sensors are installed on the boundary of ABCD, and now it is necessary to optimize the design of the positions of the 4 sensors.
[0048] (2) According to the force characteristics of the monitoring objects and the statistical laws of the source mechanism characteristics in the monitoring area, the main incident direction of the P wave of each source in the monitoring area is preliminarily judged as follows: image 3 As shown, the incident point can be represented by D, and the incident angle θ D = 30°. The direction of incidence belongs to the plane A in the vertical direction 1 D. 1 DA belongs to the plane ABCD in the horizontal direction.
[0049] (3) The construction...
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