Optimization of filling mixture strength considering rock intensity

Optimization of filling mixture strength considering rock intensity

Blog Article

The relevance of the research is caused by the tendency to reduce the cost of managing the state of water-bearing Pipe Pouches rocks in underground mining of metal deposits of rock type.The aim of the research is to study the technical possibilities of minimizing strength of hardening filling mixtures while ensuring the safety of operations and maintain the quality of ore mined by taking into account the actual stresses.Methods: a review of theory and practice, using the results of field studies carried out with the involvement of material publications, simulation of the results of technological and economic research, summarizing the results of the study.Results.

The authors have systematized the information on interaction of natural stress fields and the stress arising from man-made intervention in underground mining with laying voids with hardening mixtures.It is noted that the practice of ore deposits exploration proved the absence of satisfactory adjustment between the design parameters and actual strength, their discrepancy to geostatic distribution law.The authors proposed the model of relationship between quality ore production figures and the state of rock arrays by the strength of geomechanical system elements.The paper introduces the results of field studies of a powerful deposit array stress state, confirming and explaining the irregular stress distribution.

Conclusions.Mountain massif and the rocks composing it are heterogeneous and stress in their elements may be determined adequately only instrumentally.The actual voltage can differ from the calculated values, being affected by geological faults of the crust.Differentiation of the Fridge Start Device filling mixture composition allows reducing the consumption of cement for their preparation taking into account the real state of the array.

This improves the technical and economic indicators of technique while maintaining a safe conditions of ore production.