Application of Nonwoven Geosynthetic Materials in Construction in Wetlands

Abstract

The article contains the results of research on the development of optimal in terms of time and complexity of work, energy intensity, consumption of materials and cost, the design of the roadbed for use in the construction of oilfield roads in wetlands. Trunk oil and gas pipelines in Western Siberia and north of the European part of Russia began to be built approximately from the mid-1960s. From the very beginning, designers faced serious problems: complex natural and heavy ground and hydro geological conditions, namely, permafrost soils and swamps. The length of the swamp sections is tens and hundreds of meters, and in some cases – tens of kilometers. Road construction in wetlands is a very difficult engineering task. Conditions of excessive moisture, extremely low load-carrying capacity of marsh soils, a characteristic deficiency of quality mineral materials - all this creates obstacles, the overcoming of which is associated with significant material costs. The average cost of road construction through the swamp is 3-5 times higher than in normal conditions. A constructive solution for the roadbed using a layer of non-woven synthetic material in the cage to ensure year-round and uninterrupted movement of technological transport for maintenance of oil facilities was chosen.