Method of Determining the Triaxial Stress State in the Rock Mass with Directed Hydrofracturing / Metoda Określania Trójosiowego Stanu Naprężenia W Górotworze Z Użyciem Ukierunkowanego Hydroszczelinowania

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Abstract

Stress state in the rock mass determines design of mine workings, their proper maintenance, and safety of the personnel working there. That is why numerous methods of determining stress state in the rock mass have been devised. One of the categories of such methods are hydraulic ones. The most commonly known methods of hydrofracturing and the HTPF have certain limitations resulting from their assumptions. The presented method based on directed hydrofracturing of rocks enables determining values and directions of principal stresses in the rock mass, independently on the complexity of local stress state. The essence of the method, conditions of conducting tests and the method of calculating components of stress state basing on underground measurements are presented.

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