Mining-induced Stress Measurement With Hydraulic Borehole Pressure Cells.
Proc 25th U S Symp on Rock Mech Evanston Illinois Soc Min Eng AIME Ch 22 1984 :204-211
This paper proposes an unconventional, simple, and practical method of measuring mining-induced ground stresses with hydraulic borehole pressure cells. The method is a direct ground stress measuring technique. It does not require the value of deformation modulus for back-calculation of stresses; instead, it directly measures the ground stress in situ. The applicability and practicality of the technique are shown by two case studies. The technique may be applied to monitoring a stress buildup that may lead to mine roof failure or to rock and coal outbursts.
Proc. 25th U.S. Symp. on Rock Mech., Evanston, Illinois, Soc. Min. Eng. AIME, Ch. 22, 1984, Pp. 204-211