Селевые явления на всесезонном туристско-рекреационном комплексе Мамисон

Abstract

Introduction. The territory of North Ossetia-Alania has significant potential for recreational development. One of these favorable areas is the high-mountain gorge Mamison, where the Zemegondon and Kozydon rivers merge, which, downstream, form the Mamikhdon River. The government decided to create an all-season tourist and recreational complex “Mamison”. It is planned to create a world-class resort here. Purpose of research. Assessment of mudflow hazard in the area of the “Mamison” and forecast of the dynamics of its development. Materials and methods of research: published scientific and technical information, archival and stock materials, previous reports on engineering surveys on the territory of the “Mamison” were used. The mudflow hazard assessment was carried out using the method of full-scale specialized field survey. Field work to assess mudflow hazard was completed in July 2023. Research results. An assessment of the mudflow hazard at the “Mamison” and the surrounding area revealed: the number of mudflow rivers - 14; morphological type of mudflow sources: incisions, potholes, rocky areas, eroded surfaces; frequency of mudflows - on average once every 3–5 years; mudflow volumes - from 1000 to 50 000 m3 , very rarely (once every 50 years) can exceed 100 000 m3 ; genesis of mudflows - rain, snow-rain and glacial-rain. It has been established that the main influence on mudflow occurrences is exerted by hydrometeorological conditions (snowmelt, precipitation). Based on the results of the study, a mudflow hazard map was created for the territory of the “Mamison” and the adjacent territory, where mudflow channels, mudflow sources, transit zones and mudflow deposits are identified. Conclusion. The territory of the “Mamison” is very dangerous for mudflows. As the recreational development of the region increases, the frequency of mudflows will increase, which will lead to an increase in mudflow hazard. To reduce mudflow activity in the territory under consideration, it is necessary to carry out measures: include in the throughput capacity of hydraulic structures the costs of not only storm runoff, but also mudflows; creation of an effective system for monitoring mudflow conditions.