As an indispensable part of the lifeline for offshore gas and oil industry, submarine pipelines under long-term marine environmental loadings have historically been susceptible to earthquakes. This study investigates impact trench backfilling on residual liquefaction around a pipeline induced uplift combined action earthquake, ocean wave current loading. A fully coupled nonlinear effective stre...

The present paper considers aspects of underground iron ore mining in Ukraine, particular the level mine production and reserves basic fields. It analyzes generalizes practice using cemented rockfill under difficult hydrogeological conditions Pivdenno-Bilozerske high-grade field. Belozersky district is only one Ukraine that, without any technological cycle beneficiation, can provide both domest...

Abstract Anti-mud agents could improve the efficiency of action water reducers in concrete by preferentially. The anti-mud agent was preferentially adsorbed on clay surface, which reduces ineffective adsorption reducing to paste, thereby improving reduction efficiency. However, its application high-sediment content coal gangue gypsum backfill materials had not been reported. In this paper, comp...

The paper analyzes the positive and negative aspects of various technological solutions for liquid brines used during development polymineral potash ore deposits considers problem determining choice optimal approach by considering geological, technical, environmental, financial factors. study issues utilization reduction components discharges in production fertilizers, simultaneous valuable los...