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EN
The specificity of the activities of the Lower Silesian Branch of the Polish Geological Institute - National Research Institute (PGI-NRI) is due to main factors: (1) mosaic-like geological structure of Lower Silesia, (2) the wealth of various mineral resources, (3) centuries-old mining traditions of the region. Initially, the researches included mainly geological cartography, subsequently expanding the scope of work to include regional (structural) geology and deposit geology. The contribution of applied geology, especially hydrogeology and environmental geology, has increased significantly in the previous decades. Three chapters present different periods of the Lower Silesian Branch of the PGI-NRI with its most important milestones for the Polish geology in the last seven decades. This division includes three periods: (1) years of development (1949-1989); (2) years of stagnation (1989-2013), and (3) years of disorganization (2014-2019). The period of intensification of geological researches carried out by the Lower Silesian Branch of the PGI-NRI lasted until the years of the so-called system transformation. During that period, the programs of deep boreholes were finished. In the 1990s, detailed cartographic works in Lower Silesia were completed. Acute shortage of new factographic material caused the necessity to analyze the archival material stored during previous decades at the Lower Silesian Branch. In 2014, it has practically decommissioned the regional branches, including the Lower Silesian Branch. Full centralization has led to the liquidation of both the branches’ independence and their previous focus on the implementation of tasks related to the specificity of a given region. In the forthcoming future, new challenges would depend on a proper organization chart of the PGI-NRI and the position of the regional branches in this scheme.
2
Content available remote Modułowy system wiertniczy VLI drilling seria 1000 – cele i zadania
PL
W artykule przedstawiono budowę modułową maszyny, opisano system zarządzania wierceniami kierunkowymi DDMS, zasady projektowania otworów kierunkowych oraz zadania i cele postawione modułowemu systemowi wiertniczemu VLI serii 1000 produkcji australijskiej.
CS
Jednim z hlavnich problemu, ktery pfedstavuje znacne komplikace pri rcalizaci tezebnich praci v nadlozi uhelnych sloji v Severoceske hnedouhelne panvi je vyskyt pevnych hornin, jejichz tezba kontinualni technologii je velmi obtiźna nebo dokonce nemozna. Stanoveni pfesne polohy techto pevnych teles je proto nezbytnym pfedpokladem pro uspesne provadenf techto praci. Jednou z metod, ktere mohou prispet reseni tohoto problemu je urcovani pozice techto teles s vyuzitim technologie plnoprofiloveho vrtani (rotacniho, pfip. rotećne pfiklepneho) pfi soućasnem sledovani zakladnich zadanych a vyslednych parametru reżimu vrtani (tzv. mechanicka karotaź). V ćlanku jsou shrnuty nektere zakladni poznatky, ktere byly ziskany pfi realizaci teto metodiky na Dole Bilina v letech 2007/2008, vcetne pfikladu vyhodnoceni grafickych zaznamu mefici aparatury, ktera byla nateto lokalite nasazena.
EN
Geological drilling exploration represents very important activity necessary to gam information utilizable for the purposes of mining process regulation in the all lignite mining localities of open pit mines in the North Bohemian Basin. Beside the classic methods used for the determination of drilled rocks such as drill core taking, which is otherwise of high quality but very costly, the method of mechanical bore hole logging represents important information source utilizable in drilling process. This method is based on the principle of the observation of basic engaged and final parameters of the drilling process and their evaluation in relation to drilled rocks. This method is available especially in the areas typical of expressively different of drilled rocks. It is possible to use this method in conditions of the coal bed's hanging wall in the mining localities of open pit mines in the North Bohemian Basin, distinguished by typical presence of solid rocks with a markedly different rocks' solidity in comparison with adjacent rocks in the coal bed's hanging wall. The methodology listed above was field tested and evaluated in mining conditions of the Bilina mine.
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