Porovnání vlivu horninových injektáží na ražbu stanice metra

Abstract

This diplom thesis deals with the influence of rock injections on the construction of the southern part of the mined one-metro station Pankrác D and the interchanges on the new route Prague metro D. The introductory part describes the basic parameters of the new route of the Prague metro and station Pankrác D including the geological hydrogeological and geotechnical properties of the soil-rock environment. In the next part I deal with the actual technical solution of proving the influence of rock injections on the execution of the excavation of the station or, to the surrounding existing buildings, in particular metro C tunnels. I propose procedures for verifying the efficiency of rock injections in the given environment before excavating the station itself. I deal in detail with 3D modeling and geotechnical calculations of excavations in MIDAS GTS NX, including statistical evaluation of inputs and outputs by the LHS method. In one chapter I deal with the design of geotechnical monitoring, the existing buildings, the station itself and the interchanges during the excavation. At the end, I evaluate the influence of the rock grouting on the excavation itself and on the existing existing buildings, in particular the tunnels of the metro line C.