Assessments on slope instabilities triggered by engineering excavations near a small settlement (Turkey)
文献类型：期刊论文
| 作者 | TUNCAY Ergün |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2018-01 |
| 卷号 | 15期号:1页码:114-129 |
| 关键词 | Slope Instability Back-analysis Remedial Measures |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-017-4718-z |
| 通讯作者 | TUNCAY Ergün |
| 英文摘要 | In this study, the mechanisms of slope instabilities triggered by engineering excavations at location of a planned tunnel portal in the northwest region of Turkey were assessed, and stability of the current slopes which has impacts on safety of a settlement (village) and agricultural fields was investigated. In the first stage of the study, in order to identify the geological units and structural properties of the sedimentary rocks in the area, to clarify the mechanisms of instabilities and to characterize discontinuity and rock mass properties field works were conducted. In this content, geotechnical boreholes, geophysical explorations between the boreholes, line surveys to explore discontinuity properties, preparation of slope profiles using topographical techniques and sampling of rock blocks and discontinuity planes were performed. In the second stage, laboratory tests were carried out on the samples to determine the geomechnical properties of the slope forming materials and discontinuities. Then, back analyses of the instabilities were made to assess the responsible shear strength parameters of the geological units during failures by considering laboratory shear test results too. Based on the back-analyses of the failures, the strength properties of the slope debris were estimated, and it has been clarified that the residual shear strength properties are the factors controlling slip mechanism along the beddings. Following the stability analyses, it is understood that a further instability along the mass or bedding planes in the failed and redesigned area are not expected, if the current slope geometry is not changed. However, safety factor calculated for the slope in the debris is 1.1 which is well below the recommended value in the literature. The minimum safety factor for currently stable slopes which were cut at the eastern part of the failed area is 1.22 which is also less than that suggested in literature. Some remedial measures such as mini-pile or slope flattening are suggested after analyses to increase the factor of safety for this part below the settlement. |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/20786]  |
| 专题 | Journal of Mountain Science _Journal of Mountain Science-2018_Vol15 No.1 |
| 推荐引用方式 GB/T 7714 | TUNCAY Ergün. Assessments on slope instabilities triggered by engineering excavations near a small settlement (Turkey)[J]. Journal of Mountain Science,2018,15(1):114-129. |
| APA | TUNCAY Ergün.(2018).Assessments on slope instabilities triggered by engineering excavations near a small settlement (Turkey).Journal of Mountain Science,15(1),114-129. |
| MLA | TUNCAY Ergün."Assessments on slope instabilities triggered by engineering excavations near a small settlement (Turkey)".Journal of Mountain Science 15.1(2018):114-129. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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