Evaluation of Controlled Blasting Quality for Rock-Mass Tunneling Based on Multiple Indices

• DOI: 10.1061/jcemd4.coeng-12025
• Publication Date: 2022-11-11T04:05:13Z
• Authors: Yao Yin; Jianxiu Wang; Baoping Zou; Jinghua Zhang; Youhua Su; Qing Sun
• Keywords: Classification of discontinuities

Current index factors considered in tunnel blasting quality evaluation are relatively onefold, as well the unrefined standards, which may debase reliability of evaluations. In this study, an system tunnel-controlled was first established considering characteristics geometry and safety. The fractal dimensions contours were calculated based on field over/underbreak data using wavelet analysis. Then, grades weights obtained via cluster analyses innovative combination weighting method, respectively. Finally, unascertained measure model (UMM) applied Zigaojian Tunnel evaluation. results indicate that grade turns down with increase intensive degree discontinuities rock mass. UMM makes more refined compared traditional scoring prepares important basis for optimization construction.