Physico-Chemical nanomaterials science

Catastrophic phenomena on marine slopes and artificial dams in presence of nanostructured iron aluminosilicates 
Panko A.V.1, Kovzun I.G.1, Prokopenko V.A.1,2, Nikipelova O.M.3, 
Tsyganovich О.А.1,2, Oliinyk V.O.1
1 F.D.Ovcharenko Institute of biocolloid chemistry of NAS of Ukraine, 
Ak.Vernadskogo Blvd. 42, Kyiv 03680, Ukraine. E-mail: gr.k.ibcc@ukr.net
2 National technical University of Ukraine «KPI», 
Peremohy Ave., 37, building 4, Kyiv 03056, Ukraine. 
3 SA «Ukrainian Research Institute of Medical Rehabilitation and Balneology, Ministry of Health of Ukraine», Lermontovskiy Lane 6, Odessa 65014, Ukraine.

Causes of catastrophic phenomena [1] aided by nanostructured iron aluminosilicates (NIASs), which are the main components of marine sediments and grounds of artificial dams were considered using model systems, and physicochemical and biological methods. With the aid of physicochemical geomechanics (PCGM) and rheological methods, it was showed the formation of initial conditions for sediment stress shifting on marine slopes and dams with the formation of mudflows caused by viscous effects of ultraanomaly [2] and then of hyperanomaly, which trigger a laminar flow of dispersions. It was shown, for the first time, the role of wind waves in the formation of phaseolin and deep marine sediments under influence of physicochemical, biocolloidal, and geomechanical factors, and in provoking of NIAS sediments shifting. Nanochemical, biocolloidal, and geomechanical models of the processes occurring both in conditions of laminar and in followed avalanche-like turbulent flow of huge large-tonnage sediment masses [1] were presented. Estimation of catastrophic consequences of underwater avalanches onto bottom structures of seas and oceans are considered, and social consequences of mudflows caused by dam collapsing were estimated too. General recommendations for the prevention of those phenomena using advances of modern PCGM and rheology and developments in investigations concerning the creation of respective ecogeobiotechnologies are presented. 

1.	Scheidegger A.E. Physical aspects of natural catastrophes. – Elsevier, 1975, 304 p. 
2.	Panko A.V., Kovzun I.G., Nikipelova O.M. et al. // Springer Proc. in Physics.– 2018,214, P.215-230 https://doi.org/10.1007/978-3-319-92567-7_13
3.	Shchukin E.D., Pertsov A.V., Amelina E.A., Zelenev A.S. Colloid and Surface Chemistry. – Elsevier, 2001, 747 p.