Determination of properties of structured rock mass by the acoustic method

An approach to determination of properties of a rock mass with a layered st ructure by acoustic sounding is proposed on the basis of solution of invers e problems of seismic probing. Methods for selecting the initial approximat ion ensuring convergence of iterative processes are indicated. The optimal parameters of the input signals and the duration of the output signal are f ound. It is shown that interlayer joints may serve as an indicator of the v ariation of external stress field in the mass.