Saint Petersburg Mining University

Assessing subsidence at fuel-storage tanks in Moa Port, Cuba, using interferometric synthetic aperture radar and engineering-geological interpretation

This study investigates ground deformation affecting fuel-storage tanks TK-5 and TK-6 at Moa Port, Cuba, a coastal facility built on reclaimed ground. The analysis integrates Interferometric Synthetic Aperture Radar (InSAR), engineering-geological interpretation of borehole data,...

Influence of Induction Motor-Equivalent-Circuit Selection on Harmonic Power Quality Assessment in Industrial Power Supply System

As the share of nonlinear loads in the power supply systems of industrial enterprises increases, the importance of accurately estimating higher harmonics through modeling grows both in operation and in design. In this case, all network elements and loads are represented by their...

Исследование «колчеданского янтаря» с помощью ИК-спектроскопии

This work is devoted to the study of fossil resins from the collection of the Mining Museum using infrared spectroscopy (FTIR). Samples of amber from the Iset River in the Middle Urals, collected in the early 19th century and known as “Kolchedan amber”, were examined. For compari...

Совершенствование конструкции наддолотного калибрующе-эжекционного устройства для повышения эффективности разрушения горных пород в процессе строительства скважин

This research investigates the operational performance of ejection systems integrated into drilling rock-breaking assemblies. The object of the study is a near-bit reaming-ejection device (RED), which is installed in the bottom hole assembly (BHA) and is intended to improve botto...

Исследование тампонажных растворов с применением хромсодержащего катализаторного шлама для крепления скважин в зоне многолетнемерзлых пород

This article presents an experimental study of the effect of chromium (III) oxide, recovered from chromium-containing catalyst sludge, on the properties of grouting mortars used for well cementing in permafrost zones. The necessity of modifying grouting mortars to increase the st...

Domain-Specific Retrieval-Augmented Generation for Metallurgical R&D Knowledge Bases: A Hybrid Graph-Enhanced Approach

Metallurgical R&D search is difficult for a practical reason: useful evidence is rarely defined by one keyword. A production-support question can depend at the same time on material grade, process route, defect mechanism, property, test method, and numerical conditions. Conventio...