Evaluation of initial stressed state of salt massif by hydrofracturing method

Conclusions

1. The results obtained in this work lead to the conclusion that the form of the original stressed state of the salt massif in this particular section is close to hydrostatic, with intensity γH.

2. More precise quantitative evaluations must be based correspondingly on more representative input information. In this respect, the most important question is the preparation of the test holes, the quality of which must ensure that the planned volume of successful experiments will be performed; the holes must be located as far as possible from exposed surfaces, i.e., outside the zone of influence of mine workings.

Invaluable assistance in the various stages of performing the experimental work and processing the data has been rendered by the following staff members of the Mining Institute of the Siberian Branch of the Russian Academy of Sciences: I. L. Boltengagen, V. E. Petrov, S. E. Petrov, and R. Yun. To all of them, the authors wish to express their sincere gratitude.