Pressure sensor for monitoring mine safety Australian company, Mincad Systems Pty Ltd undertook an analysis of a new type of hydraulic stressmeter developed for monitoring rock stresses in underground mines. The stressmeter is inserted into a borehole and an internal hydraulic ?atjack in?ated to an initial "set" pressure which forces platens against the borehole side. Subsequent changes in hydraulic pressure indicate changes in the pressure of the surrounding rock. Although the stressmeter is a relatively simple physical device, its accurate modelling required that a number of analytical complexities be considered. These include: changing contact conditions; large plastic deformations; a complex loading sequence; incompressibility of hydraulic ?uid; and a requirement that the hydrauli

Join for free to read