Irina Khubulava

The work reviewed and evaluated various genesis debris flow phenomena recently formatted in the Mletiskhevi, accordingly in revealed necessity of treatment modern debris flow against measures. Based on this, it is proposed the debris flow against truncated semi cone shape construction, which elements are contained in the car's secondary tires. Its constituent elements (sections) due to the possibilities of amortization and geometric shapes is effective and sustainable towards debris flow hitting force. The construction is economical, because after crossing the debris flow in the river bed, the riverbed is not cleanable, also the elements of the building are resource saving. For assessment of influence of cohesive debris flow at the construction and evaluation of the construction effectiveness have been implemented calculation in the specific assumptions with approved methodology. According to the calculation, it was established that after passing debris flow in the debris flow construction (in 3 row case) its hitting force reduced 3 times, that causes reduce of debris flow speed and kinetic energy, as well as sedimentation on a certain section on of water drain in the lower part  of the construction. Based on the analysis and report on the debris flow against construction, it can be said that construction is effective, inexpensive, technically relatively easy-to-reach measure, that's why its implementation is prospective. 

The paper describes the chemical characteristics of well water used by the population living in the Koleti lowlands. It is concluded that wells used by the population for drinking require permanent studies.

The paper determines the chemical characteristics of the water wells used by the rural population in the Kolkheti lowland. The results of the water quality examination of water wells used by rural population in 7 municipalities of Kolkheti have been listed. It is also necessary to prepare recommendations for the neutralization of polluting places to prevent further water pollution of the water wells.

The paper presents the predicting methods of the current mudflow processes in the water catching basin of River Cheremi ravine (Velistsikhe village). It has been shown the    dependence between the expense and provision rates of eventuated mudflow. The maximum cost of ensuring different percentage of mudflow has been calculated, according to which the maximum expense of 1% of turbulent mudflow is 767,6 m3/sec. The result obtained by the research in turn is a great ecological threat.

Soil erosion processes occurrent on the vulnerable slopes of the Gldaniskhevi river ravine are considered in the work. Namely, by means of approved empirical dependence, on Mamkoda adjoining  vulnerable slopes, values of eroding coefficient, degree of damage and erosion numerical  characteristics were determined.In order to make the results more precise and to elaborate effective soil anti erosive geo mat (eroded sections control devices), field integrated polygon was arranged on Mamkoda settling adjoining vulnerable slope. There, at the same time, soil erosion dynamics study (control section) as well as the investigation on soil anti erosive effectivity and ability of bio diversity renewal of two different of each other geo mats (the worldwide approved geo mat “Jute Mat” and Georgian product geo mat “Luffaeromat”) were conducted.On the base of research having been carried out on the polygon control section, it has been ascertained,  that theoretical outcomes received on Mamkoda adjoining vulnerable slopes stand close to those of attained in field conditions, that stipulates reliability of data, gained as the result of researches fulfilled with the purpose to determine soil erosion intensity. As for field researches fulfilled on the experimental sections of the integrated polygon, it was ascertained, that from the soil anti erodibility point of view as well as that of bio diversity renewal ability geo mat “Luffaeromat”, created by us, is more effective, than geo mat “Jute Mat”, that allows us to give recommendation for its implementation. 

The catchment basin of the Jokhtaniskhevi (Jokhtani ravine) – the right tributary of the debris flow nature Gldaniskhevi river, which is situated on the territory of Tbilisi, is considered in the study. There, according the recent period, erosion-landslide genesis great intensity debries flow phenomena has been formatted with 5 year intervals.

In order to study debris flow processes occurent in one of the Gldaniskhevi debris flow nature Jokhtani ravine, namely, in its catchment basin, and to ascertain hydraulic and morphometric parametres of the debris flow, the field researchers has been carried out in spring 2017.

After chamber treatment of the data, gained during the field researches and by the use of approved empirical dependence, recieved by Proffesor Givi Gavardashvili, various percentage provision maximal discharges were ascertained in the Jokhtaniskhevi catchment basin.

According the calculation of the approved empirical dependence given in the study, 1% provision maximal discharge of debris flow of Jokhtaniskhevi has been ascertained, which is 359,6 m3/sec. That poses great danger to the population of Tbilisi, the capital of Georgia, and active, effective measures are needed to implement for softening the predictable ecological disaster.

In the article are presented field researches implemented carried out at the investigated integrated polygon, as a result of which ascertained that at the controlled section active erosive processes take place, that negatively reflect as at the very slope, so at the ecological state of Gldaniskhevi River catchment basin. Researches carried out at thr experienced sections of investigated integrated polygon show that geo mat "Luffaeromat" is more effective than geo mat "Jute Mat". This is confirmed by comparison of quantity of masses sediment runoff washed out at the correspondent investigated sections as well as plants growth dynamic at the geo mats.

The assessment quality of well water used for drinking by population, have been researched seven municipality of west Georgia, particularly Samegrelo region, where main sources of drinking water is well water.

In the article, the Lattice Type Debris Flow against Construction is presented, built at the surrounded by the flow principle, has been implemented theoretical research for evaluation Debris Flow influence on that.

Effective modern measures against soil erosion are presented in the paper and appropriate recommendations are developed.

In this article it is discussed dependence of the soil's layer's on the angle of inner friction, for the soils which are under limited conditions.

It is established that for the angles with little bend, angle of inner friction has bigger marker for bigger width of the soil's layer's, for which limited conditions are reached. Such kind of result is natural, but for bigger marker of angle band effect is opposite.

It's established how to calculate angle bend and it's given concrete e[amples to proof this paradoxical properties.

The paper gives the general anti debris flow measures classification considering their purpose and conditionse of use. In analyses the data from the survey on the basis of laboratory and theoretical researches as well, as the assesment of their implementation opportunites.       

In the Borjomi Valley as a result of field recognition research, in the Nagvarevi Ghele(gully) near to vil. Daba fixed debris flow phenomena provoked by negative result of ecocide (fire). It has been established quanties characteristics of erosion debris flow processes.iit has been done forecast for evaluation of risks of geodynamic processes running in Borjomi valley (catchments basin of Nagvarevi Ghele(gully).

For study soil protectable characteristics of geo mat “Luffaeromat”, carried out  laboratory research on it, positive results received on the base its laboratory research show as necessity its research in the field conditions, to ultimately determine expediency of introduction of geo mat “Luffaeromat to achieve stabilization of  vulnerability slopes.

The laboratory research implemented by us is attempt to create innovation measure against soil erosion, which will enable us to protect vulnerability territories by using geo mat “Eroecomat”- made cheap and ecological clean materials (technical cotton).

In the territory of Georgia, outgoing Baku-Tbilisi-Erzurum transport corridor expected debris flow phenomena of quantitative characteristics, dtermines their degree of reliability and assesses the risk.

The paper discusses the modern GEO MAT “Cotonmat” developed through laboratory and field experiments, which is an innovative, inexpensive means of landslide, which can be used to promote the stabilization of landslides.

The article considers the morphometric indicators of the erosive slope of the transport corridor located in the area of Gldani village on the left side of the catchment basin of river Kura.

The paper is devoted to predicting the plane erosion of soil using the well-established hydro-mechanical method proposed by Acad. Ts. Mirtskhoulava.

The paper deals with the question of obtaining simplified empirical dependences for calculating maximum discharges of water. 

The paper presents the study of phytomelioration measures against soil erosion, in particular, two artificial test plots were arranged on the territory of Georgia, on which field studies were conducted. The conducted studies enable us to use phytomelioration methods against erosive-flood events.

Doctoral Thesis Referee

Master Theses Supervisor

Doctoral Thesis Supervisor/Co-supervisor

Scientific editor of monographs in foreign languages

Scientific editor of a monograph in Georgian

Editor-in-Chief of a peer-reviewed or professional journal / proceedings

Review of a scientific professional journal / proceedings

Member of the editorial board of a peer-reviewed scientific or professional journal / proceedings

Participation in a project / grant funded by an international organization

Participation in a project / grant funded from the state budget

Patent authorship

Membership of the Georgian National Academy of Science or Georgian Academy of Agricultural Sciences

Membership of an international professional organization

Membership of the Conference Organizing / Program Committee

National Award / Sectoral Award, Order, Medal, etc.

Honorary title

Monograph

Handbook

Research articles in high impact factor and local Scientific Journals

Publication in Scientific Conference Proceedings Indexed in Web of Science and Scopus