Photoelasticity study of rock stress state around sub-stage drifts in thick steeply falling formations
Abstract
When developing powerful steeply falling formations with the division of the floor into sub-floors (for example, at hydro-mines), effective means of supporting the sub-floor drifts are required. The support should provide reliable stability of drifts and ease of its installation - conditions for high rates of drifting by shearers or hydro-monitors. The type of such support depends primarily on the amount of rock pressure, which is the result of the distribution of stresses in the rock mass around the excavation.
Область исследования:
Mining
References
- Gorodetsky P. I., Lukyanov Y. M., Abramov V. I. Large chamber centrifuge BKC-3 for modeling of stresses under the action of volumetric forces. Journal of Mining Institute, 1961, vol. XLIV, iss. 1.
- Frocht M. Photoelasticity, vols. I and II. OGIZ, 1948.
- Krasnov V. M. On solving the spatial problem of elasticity theory by the optical method. Academic notes of LSU. Series mathematics, 1969. vol. 8; 1944, vol. 13.
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