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| Content Provider | Springer Nature Link |
|---|---|
| Author | Chen, Ming Lu, Wen bo Zhang, Wen ju Yan, Peng Zhou, Chuang bing |
| Copyright Year | 2014 |
| Abstract | Acoustic velocity is an important parameter to evaluate the mechanical properties of fractured rock masses. Based on the in situ acoustic velocity measurement data of ~20 hydropower stations in China, we assessed the acoustic velocity increase of rock masses as a result of consolidation grouting in different geological conditions, such as fault sites, weathered areas and excavation-induced damage zones. We established an empirical relationship between the acoustic velocity of rock masses before and after consolidation grouting, and examined the correlation between acoustic velocity and deformation modulus. A case study is presented about a foundation consolidation grouting project for an intake tower of Pubugou Hydropower Station. The results show that different types of rock masses possess distinct ranges for resultant acoustic velocity increase by consolidation grouting. Under a confidence interval of 95 %, the ranges of the increasing rate of acoustic velocity in a faulted zone, weathered zone, and excavation-induced damage zone are observed to be 12.7–43.1, 12.3–31.2, and 6.9–14.5 %, respectively. The acoustic velocity before grouting and its increasing rate can be used to predict the effectiveness of consolidation grouting. |
| Starting Page | 1259 |
| Ending Page | 1274 |
| Page Count | 16 |
| File Format | |
| ISSN | 07232632 |
| Journal | Rock Mechanics and Rock Engineering |
| Volume Number | 48 |
| Issue Number | 3 |
| e-ISSN | 1434453X |
| Language | English |
| Publisher | Springer Vienna |
| Publisher Date | 2014-07-06 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hydraulic engineering Rock mass Consolidation grouting Acoustic velocity Geophysics/Geodesy Civil Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Geology Geotechnical Engineering and Engineering Geology Civil and Structural Engineering |
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