Method for detecting anisotropism P-wave of fractures of working face of mine
A technology of anisotropy and detection method, which is applied in the detection field of abnormally developed cracks in the mine working face, and achieves the effect of scientific detection method, reduction of lateral swing and strong correspondence.
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[0049] Embodiment 1: The anisotropic elastic P-wave detection method of the mine working face fracture comprises the following steps:
[0050] 1) First, in such as figure 1 The excitation shot point is arranged in the roadway on the side of the shot point shown, and the excitation parameters are as follows:
[0051] Location: the side of the mine working face close to the coal body to be detected;
[0052] Excitation drilling depth: 2.5m;
[0053] Exciting dose: 0.3Kg;
[0054] Drilling position: It is necessary to detect the middle of the coal body, more than 1m away from the bottom plate;
[0055] Drilling direction: along the coal seam direction;
[0056] Stimulation point spacing: 8~16m;
[0057] Detonator type: instant detonator;
[0058] Loading gun: positive charge, sealing mud to seal the whole hole.
[0059] 2) Second, in the case of figure 1 The detector point is arranged in the roadway on the side of the detector point shown, and the receiving parameters a...
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