Ověření kvality horninového prostředí během ražby tunelu s využitím MWD dat z vrtacích souprav

Abstract

BORSKÁ, Markéta. Rock quaility verification using MWD data. Diploma thesis. Ostrava: VŠB – Technical University of Ostrava, Faculty of Civil Engineering, 2020. 59 p. This diploma thesis deals with the verification of the quality of the rock environment using MWD data. Measurements during drilling and analysis of the obtained MWD (measurement while drilling) data is, thanks to its simplicity and clear graphic output, a very often used method of verifying the rock mass at a depth of several tens of meters in front of the face. Thanks to this technology, the excavation cycle and the type of reinforcement can be modified, the quality of the rock environment can be verified and a timely response to change can be made. Although it is not a very old method, its use has become a common part of excavation technology in Scandinavia. Today, drilling rigs can record up to 8 basic parameters, on the basis of which we can determine 3 basic parameters important for geotechnics, which is the inflow of water into the face, rock strength and the degree of failure. This work is divided into two levels: the theoretical and practical level, where the MWD data from drilling rigs are evaluated, with which I verified the quality of the rock environment.