Engineering-geological region of Far East is rather risky for operation of railway structures which is defined by changing engineering-geological conditions. The authors suggest their difficulty evaluation approach based on the analysis of engineering-geological conditions integral index defining the rate of the areas’ and sections usefulness for transportation assimilation using fuzzy logic theory.
The causes and conditions of landslide hazard in a 35 m deep, 240 m long rock excavation located at 46 km of the Izvestkovaya - Chegdomyn line, passing in the eastern marginal part of the Bureyn middle massif, which is central to the Amur geoblock of the Pacific mobile belt, characterized by complex and diverse engineering and geological conditions, were studied in detail. Seven fracture systems have been identified, three of which are major. A general conclusion is valid for the whole caving area: the fracture hollowness of rocks is abnormally high, and the blockiness of rocks is dense. Three zones have been studied in the weathering crust, their total thickness is about 40 m. Stability of excavation slopes is a little more than unity, but during earthquakes of intensity 4.0 points and more, collapses up to several hundred cubic meters are possible.
В связи со все более расширяющимися попытками использования системной методологии в инженерно-геологических исследованиях вырисовывается важная задача анализа и определения соответствующего круга понятий и терминов, на основе которых стали бы возможны постановка новых задач и поиски новых решений ....
Прирост мировой добычи полезных ископаемых составляет 5-6 % в год. Особенно быстрыми темпами растет доля их добычи открытым способом. При всех своих достоинствах этот способ добычи минерального сырья вызывает большие изменения геологической среды ...
