Mostrando 21 - 26 Resultados de 26 Para Buscar '"hard rock"', tiempo de consulta: 0.10s Limitar resultados
  1. 21
    A Study of The Design Method and Similitude for A Small-Scale Test Drilling Rig (Part 1): An Application of The Geometrically Distorted Scaled Modeling Method
    por Mejbahul Sarker
    Publicado 2021
    “...Drillstrings often vibrate severely and tend to twist off during hard rock drilling. Therefore...”
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  2. 22
    Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
    por P. Nemaxwi, J.O. Odiyo, R. Makungo
    Publicado 2019
    “... events using Extended model for Aquifer Recharge and soil moisture Transport through unsaturated Hard...”
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  3. 23
    Early life exposures associated with risk of small intestinal neuroendocrine tumors.
    “... and hard rock mining during the earliest period (1883-1929) when safety from exposures was not considered...”
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  4. 24
    EXPERIMENTAL STUDY OF THE EFFECT OF COOLING LUBRICATING FLUIDS ON PENETRATION RATE IN A HARD AND SOFT ROCK DRILLING PROCESS
    “... prediction. These tests were conducted on seven soft and hard rock samples while using six fluids...”
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  5. 25
    A parametric sensitivity analysis for prioritizing regolith knowledge needs for modeling water transfers in the West African critical zone
    “...Abstract Hard rock aquifers (HRAs) in West Africa (WA) are located within a thick regolith layer...”
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  6. 26
    Numerical Studies of the Dynamics of the Roadheader Equipped with an Automatic Control System during Cutting of Rocks with Different Mechanical Properties
    por Piotr Cheluszka
    Publicado 2021
    “... and vibrations. Mining, especially in the case of hard rocks, is associated with large energy consumption, which...”
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