Methodics of computing the results of monitoring the exploratory gallery

• Main Author: Krúpa Víazoslav
• Format: Article
• Language: English
• Published: Technical University of Kosice 2000-09-01
• Series: Acta Montanistica Slovaca
• Subjects: precise exploration by the driving exploratory gallery; full profile driving; electronic geomechanical monitoring
• Online Access: http://actamont.tuke.sk/pdf/2000/n3/1krupa.pdf

At building site of motorway tunnel Viòové-Dubná skala , the priority is given to driving of exploration galley that secures in detail: geologic, engineering geology, hydrogeology and geotechnics research. This research is based on gathering information for a supposed use of the full profile driving machine that would drive the motorway tunnel. From a part of the exploration gallery which is driven by the TBM method, a fulfilling information is gathered about the parameters of the driving process , those are gathered by a computer monitoring system. The system is mounted on a driving machine. This monitoring system is based on the industrial computer PC 104. It records 4 basic values of the driving process: the electromotor performance of the driving machine Voest-Alpine ATB 35HA, the speed of driving advance, the rotation speed of the disintegrating head TBM and the total head pressure. The pressure force is evaluated from the pressure in the hydraulic cylinders of the machine. Out of these values, the strength of rock mass, the angle of inner friction, etc. are mathematically calculated. These values characterize rock mass properties as their changes. To define the effectivity of the driving process, the value of specific energy and the working ability of driving head is used. The article defines the methodics of computing the gathered monitoring information, that is prepared for the driving machine Voest Alpine ATB 35H at the Institute of Geotechnics SAS. It describes the input forms (protocols) of the developed method created by an EXCEL program and shows selected samples of the graphical elaboration of the first monitoring results obtained from exploratory gallery driving process in the Viòové Dubná skala motorway tunnel.