Investigation of stressed state of rocks around vertical excavations by photoelasticity method

Abstract

The stability of the rock massif when driving a group of mine workings depends to a great extent on their mutual location and the ratio of cross sectional dimensions, as well as on the nature of the application of loads. Below we consider the results of the study of the stressed state of rocks during the driving of two vertical workings at the Tekeli mine, where the shaft with a diameter of 6.7 m and the ore pass with a diameter of 3.4 m were driven at a distance between their axes of 15 m to the depth of horizon X (572 m). In unstable rocks the mutual influence of these workings on each other leads to significant deformations of rocks and their falls.

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