Results of studies of volumetric geogrid

Introduction. As part of the work on the study of methods of protection of slopes from erosion using bulk geogrid was found the problem of leaching the filler material from the cells under the influence of water flow. The relevance of the work is due to the widespread use of bulk geogrid structures in the construction, which are the subject of the study. The aim is to develop recommendations for the choice of the material of the filler volume geogrid. The objectives of the study are to study the factors affecting the efficiency of retention of the filler. The practical significance lies in the fact that scientifically-based recommendations on the choice of the filler material of bulk geogrids have been developed. For many years, the improvement of structures and the development of new solutions for the protection of structures from water erosion were carried out by various specialists in the field of hydraulic research of objects of hydraulic and transport construction, including: I. Levi, A. Guryev, N.In. Khanov, Yu.M. Kosichenko, K.D. Kozlov, W. Müller, O. Kief, Y. Schary and others. Materials and methods. The method of research was to conduct a complex of theoretical and experimental work in the laboratory. Practical methods taking into account the specifics of the study include the implementation of experiments. Theoretical methods are associated with the planning of experiments, traditional statistical methods of information processing, analytical calculations. Results. On the basis of the performed experiments high efficiency of retention of large aggregate (crushed stone) and small (sand) volume geogrid under the influence of water flow was revealed. Based on the calculations of the critical velocities of particle drift from the slope and stability calculations of the geogrid on the slope, the limit values of the slopes with bulk geogrids are obtained. Conclusions. These tests have led to the conclusion that one of the key reasons for the collapse of the slopes is the wrong choice of filler material. In addition, the developed technique of selection of parameters of volumetric geogrid as to not flood prone and flood prone slopes.