Where a mine dewatering pump discharge is grouted in how does one determine the modulus from which one can determine the wavespeed (celerity). The application is a vertical mine dewatering pump discharge line running vertically through rock and grouted in position. it is presumed that the modulus will be much higher than that for the pipe material as it is basically reinforced by the rock. Is there a maximum that should be used for wavespeed?
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