A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method
In this study, a stability analysis approach for fractured rock mass slopes is proposed by combining the strength reduction method (SRM) with the undirected graph theory (UGT). First, the original shear strength parameters of all the fractures are divided by the same reduction coefficient to generat...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-01-01
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| Series: | Geomatics, Natural Hazards & Risk |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/19475705.2020.1814428 |
| _version_ | 1811270880471285760 |
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| author | Yuan Wei Tan Hanhua Niu Jiandong Peng Shu Xue Yanyu Wang Wei Sun Xiaoyun |
| author_facet | Yuan Wei Tan Hanhua Niu Jiandong Peng Shu Xue Yanyu Wang Wei Sun Xiaoyun |
| author_sort | Yuan Wei |
| collection | DOAJ |
| description | In this study, a stability analysis approach for fractured rock mass slopes is proposed by combining the strength reduction method (SRM) with the undirected graph theory (UGT). First, the original shear strength parameters of all the fractures are divided by the same reduction coefficient to generate new shear strength parameters, which are used for numerical simulations of the fractured rock mass slope. Second, the connectivity of the failure fractures is analyzed with a self-developed code, which is developed based on UGT. If no fracture clusters are fully connected from the top of the slope to the toe or free face of the slope, the slope is considered to be stable, and the reduction coefficient is incremented. The above calculation procedures are repeated until there is exactly right a fracture cluster is fully connected (i.e. slope is leaded to critical state). The reduction coefficient that coincides with the critical state is considered as the safety factor of the slope, and the fractured rock mass encompassed by the connected failure fractures is regarded as the unstable part of the slope. Finally, the proposed method is applied to analyze the stability and the potential failure range of a steep slope to verify its validity. |
| first_indexed | 2024-04-12T22:11:03Z |
| format | Article |
| id | doaj.art-a8109b96fd4a41138279065e15348db8 |
| institution | Directory Open Access Journal |
| issn | 1947-5705 1947-5713 |
| language | English |
| last_indexed | 2024-04-12T22:11:03Z |
| publishDate | 2020-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj.art-a8109b96fd4a41138279065e15348db82022-12-22T03:14:46ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132020-01-011111849186310.1080/19475705.2020.18144281814428A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction methodYuan Wei0Tan Hanhua1Niu Jiandong2Peng Shu3Xue Yanyu4Wang Wei5Sun Xiaoyun6School of Civil Engineering, Shijiazhuang Tiedao UniversityResearch and Development Department, Guizhou Province Quality and Safety Traffic Engineering Monitoring and Inspection Center Co. LTDSchool of Civil Engineering, Central South UniversityResearch and Development Department, China Railway 18TH Bureau Group CO. LTDResearch and Development Department, China Railway 24TH Bureau Group CO. LTDSchool of Civil Engineering, Shijiazhuang Tiedao UniversitySchool of Civil Engineering, Shijiazhuang Tiedao UniversityIn this study, a stability analysis approach for fractured rock mass slopes is proposed by combining the strength reduction method (SRM) with the undirected graph theory (UGT). First, the original shear strength parameters of all the fractures are divided by the same reduction coefficient to generate new shear strength parameters, which are used for numerical simulations of the fractured rock mass slope. Second, the connectivity of the failure fractures is analyzed with a self-developed code, which is developed based on UGT. If no fracture clusters are fully connected from the top of the slope to the toe or free face of the slope, the slope is considered to be stable, and the reduction coefficient is incremented. The above calculation procedures are repeated until there is exactly right a fracture cluster is fully connected (i.e. slope is leaded to critical state). The reduction coefficient that coincides with the critical state is considered as the safety factor of the slope, and the fractured rock mass encompassed by the connected failure fractures is regarded as the unstable part of the slope. Finally, the proposed method is applied to analyze the stability and the potential failure range of a steep slope to verify its validity.http://dx.doi.org/10.1080/19475705.2020.1814428fractured rock massslope stability analysisundirected graph theorystrength reduction methodjoints and fractures |
| spellingShingle | Yuan Wei Tan Hanhua Niu Jiandong Peng Shu Xue Yanyu Wang Wei Sun Xiaoyun A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method Geomatics, Natural Hazards & Risk fractured rock mass slope stability analysis undirected graph theory strength reduction method joints and fractures |
| title | A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method |
| title_full | A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method |
| title_fullStr | A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method |
| title_full_unstemmed | A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method |
| title_short | A new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method |
| title_sort | new criterion for defining the failure of a fractured rock mass slope based on the strength reduction method |
| topic | fractured rock mass slope stability analysis undirected graph theory strength reduction method joints and fractures |
| url | http://dx.doi.org/10.1080/19475705.2020.1814428 |
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