Sinking of 1 Bzie shaft in difficult hydrogeologic conditions with the application of combined lining and high-performance concretes
Data: Czwartek 26.02.2015
Sesja: International Mining Forum 2015 – część II
Godzina/Sala: 9:45 - 10:00 - A
Tytuł: Sinking of 1 Bzie shaft in difficult hydrogeologic conditions with the application of combined lining and high-performance concretes
Since 2009 Kopex – Przedsiębiorstwo Budowy Szybów S.A. (Kopex – Shaft Sinking Company) has been carrying out sinking of 1 Bzie shaft for Borynia-Zofiówka-Jastrzębie Coal Mine belonging to Jastrzębska Spółka Węglowa S.A.
The article presents meaning of the proper selection of sinking method and type of shaft lining in difficult geological conditions of the deposit overburden. In relation to the occurrence of formations of low-strength parameters, especially in the conditions of watered and gasified rock mass, the special methods were applied: fore injection for consolidation and strengthening, ground rods, drainage holes. Application of proper methods and technological disciplines enabled the safe shaft sinking at the most difficult section in the deposit overburden.
Accordingly to the difficult hydrogeological conditions, an appropriate structure of combined shaft lining was applied: panel-concrete and steel-concrete using the high-performance concretes.
Materiały video: video