Experimental Study of Single Structure Surface Dangerous Rock Mass Dynamic Characteristics Based on Constant Micromotion

Figure 11

Relative amplitude spectra corresponding to different crack depths of the cantilevered dangerous rock mass: (a) relative amplitude spectrum when the crack depth was 0 cm, (b) relative amplitude spectrum when the crack depth was 1 cm, (c) relative amplitude spectrum when the crack depth was 3 cm, (d) relative amplitude spectrum when the crack depth was 4 cm, (e) relative amplitude spectrum when the crack depth was 5 cm, and (f) relative amplitude spectrum when the crack depth was 6 cm.

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(b)

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