Testing the Effect of Undermining on Positional Accuracy of the Digital Technical Map of Ostrava in the Přívoz Cadastral District / Přívoz Kadastrinio Rajono Įtakos Ostravos Skaitmeninio Techninio Žemėlapio Poziciniam Tikslumui Padarinių Tyrimas / Анализ Влияния Разрушающих Сил На Позиционную Точность Цифровой Технической Карты Г. Острава В Кадастровом Районе Привоз
Abstract:Intensive underground exploitation took place in the area of the Ostrava corporate town in recent past. After the coal mining was shut down in 1994 gradual subsidence in the town area has slowed down, however, establishing of the Digital Technical Map of Ostrava (DTMMO) dates back to 1992. When working a seam the original geostatic and tectonic stress state in the surrounding rock mass changes, which is accompanied by rock transformation and displacement from the roof towards the stope. Undermining is manifest… Show more
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