Determination of bearing capacity of inter-chamber potash pillars during hydrofilling of chambers
Authors:
Abstract
In underground mining of potash and rock salts, as is known, room-and-pillar mining systems are widely used, providing high labor productivity and low cost of mineral extraction. However, losses in inter-chamber pillars in these systems reach 50% at domestic potash and salt mines. Mineral losses can be significantly reduced by reducing the width of inter-chamber pillars by filling the mined-out chambers with backfill. The most economically effective is hydraulic filling with waste from concentrating plants, as in this case the issue of dump placement is solved at the same time. It is also expedient to fill the mined-out space with backfill material specially extracted for this purpose (sand, gravel) ...
Область исследования:
(Archived) Without section
Funding:
None
References
- Agoshkov M. I. , Trebukov A. L. Influence of backfilling on the design dimensions of inter-chamber pillars. Sbornik Metallurgiya i toplivo, No. 3. Izd-vo AN SSSR, 1961.
- Berg O. Ya. Physical bases of the theory of concrete and reinforced concrete strength. Gosstroyizdat, 1962.
- Berg O. Ya. Strength of concrete and other materials with different resistance to tension and compression in conditions of complex stressed state. Tr. VNIITrans, No. 36, 1960.
- Zenkov R. L. Mechanics of Bulk Soils. Mashgiz, 1952.
- Kuznetsov G. N. Mechanical Properties of Rocks. Ugletekhizdat, 1947.
- Panenkov Yu. I. About the Influence of Some Factors on Strength and Stability of Support Walls. . Zapiski Gornogo Instituta, vol. XLIV, issue 1, 1961.
- Penkov A. M., Vopilkin A. A. Calculation of supporting pillars in rock salt extraction. Izd-vo AN Ukr. SSR, 1950.
- Trebukov A. L. Application of the subsequent hydraulic filling at chamber development of ore deposits. Sbornik Razrabotka i obogashchenie rud KMA. Izd-vo AN SSSR, 1963.
- Shevyakov L. D. Fundamentals of Design of Coal Mines. Ugletekhizdat, 1950.