Stope face impact risk pre-mining pre-evaluation method
A mining face and pre-evaluation technology, applied to measuring devices, instruments, scientific instruments, etc., can solve problems such as poor pertinence, low accuracy, and time-consuming and labor-intensive operations at the mining face, and achieve enhanced orthogonality of shock waves , saving resources and improving work efficiency
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[0029] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0030] Such as figure 1 Shown is a schematic diagram of the arrangement of seismic sources and geophones when pre-evaluating the impact risk of a working face in the present invention using the pre-evaluation method for the impact risk of a working face of the present invention.
[0031] The pre-mining pre-evaluation method for impact hazard of the working face is achieved by arranging a certain number of seismic sources and geophones in the open cut 2, return air lane 3 or transport lane 4 of the working face 1 pre-evaluated before mining. The evaluation of seismic CT detection technology includes the following steps:
[0032] (a) Perform laboratory experiments to confirm that seismic waves are in the direct roof, old roof and coal seam of the...
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