The main objective of this study was to investigate the performance of a roadheader used for the excavation of Küçüksu Sewage Tunnel having a length of 1037.52 m. The tunnel is located in Anatolian part of Istanbul and constructed by STFA for Istanbul Water and Sewerage Administration (ISKI). Detailed statistical analysis showed that net advance rate of the roadheader is directly influenced by ...

This paper presents a novel integrated method for interactive characterization of fracture spacing in rock tunnel sections. The main procedure includes four steps: (1) Automatic extraction traces, (2) digitization trace maps, (3) disconnection and grouping (4) measurement set spacing, total surface quality designation (S-RQD) value. To evaluate the performance proposed method, sample images wer...

RMR, Rock Mass Rating, is one of the famous rock classifications. However, RMR was proposed empirically and absolutely depends on the experience of engineer. Therefore, engineering verification is needed for RMR system itself. In this study, the factor analysis and the multiple regressions were performed in order to evaluate the validity of rating factor of RMR. Also numerical analysis was carr...

This paper proposes a fault diagnosing system for the Ice-Storage Air-Conditioning System (ISACS) to supervise operation conditions of brine chillers. Combining Radial Basis Function Network (RBFN) and Robust Quality Design (RQD), an Enhanced RBFN (ERBFN) is proposed pursue fast accurate diagnosis. The RQD method used adjust parameters in training stage improve searching ability, good performan...

Abstract Mineral and hydrocarbon exploration relies heavily on geological geotechnical information extracted from drill cores. Traditional drill-core characterization is based purely the subjective expertise of a geologist. New technologies can provide automatic mineral analysis high-resolution core images in non-destructive manner. However, automated rock mass presents significant challenge du...