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Stability Analysis of a Debris Slope by Micropile Reinforcement Technique: A Case Study from the North-Western Himalayas
https://orcid.org/http://orcid.org/0000-0001-8741-8685
https://orcid.org/http://orcid.org/0000-0003-3775-7026
https://orcid.org/http://orcid.org/0000-0002-6706-3626
Debris slides take place when a mass of soil or debris slides down over a slip or failure surface. Mitigation or control of such sliding mass frequently poses an engineering challenge. Micropiles are many a times used to stabilize a slope under certain circumstances. To analyze the effect of micropiles on slope stability, one requires to determine the geo-mechanical properties of the strata, slope geometry, micropile diameter, lengths, and locations of such installations. Hence, it becomes a complex interaction problem. In the present study, an active landslide in Tehri Garhwal district of Uttarakhand state of India has been chosen for demonstration of micropile reinforcement technique. After characterization of the slope material, factor of safety of the untreated slope under different degree of saturation have been evaluated by utilizing different limit equilibrium methods for static and pseudo-static conditions. Since the failure surfaces for all the simulated scenarios have been obtained at deeper depths, it was fathomed that deep-seated slip movements need to be arrested partially or fully for which slope reinforcement with micropiles will be a good choice. A parametric analysis was conducted to assess stability of the slope with single rows of micropiles with different diameter, spacing, and aspect ratios. The results show that the slope stability improves satisfactorily for certain cases.
Stability Analysis of a Debris Slope by Micropile Reinforcement Technique: A Case Study from the North-Western Himalayas
https://orcid.org/http://orcid.org/0000-0001-8741-8685
https://orcid.org/http://orcid.org/0000-0003-3775-7026
https://orcid.org/http://orcid.org/0000-0002-6706-3626
Debris slides take place when a mass of soil or debris slides down over a slip or failure surface. Mitigation or control of such sliding mass frequently poses an engineering challenge. Micropiles are many a times used to stabilize a slope under certain circumstances. To analyze the effect of micropiles on slope stability, one requires to determine the geo-mechanical properties of the strata, slope geometry, micropile diameter, lengths, and locations of such installations. Hence, it becomes a complex interaction problem. In the present study, an active landslide in Tehri Garhwal district of Uttarakhand state of India has been chosen for demonstration of micropile reinforcement technique. After characterization of the slope material, factor of safety of the untreated slope under different degree of saturation have been evaluated by utilizing different limit equilibrium methods for static and pseudo-static conditions. Since the failure surfaces for all the simulated scenarios have been obtained at deeper depths, it was fathomed that deep-seated slip movements need to be arrested partially or fully for which slope reinforcement with micropiles will be a good choice. A parametric analysis was conducted to assess stability of the slope with single rows of micropiles with different diameter, spacing, and aspect ratios. The results show that the slope stability improves satisfactorily for certain cases.
Stability Analysis of a Debris Slope by Micropile Reinforcement Technique: A Case Study from the North-Western Himalayas
https://orcid.org/http://orcid.org/0000-0001-8741-8685
https://orcid.org/http://orcid.org/0000-0003-3775-7026
https://orcid.org/http://orcid.org/0000-0002-6706-3626
Debris slides take place when a mass of soil or debris slides down over a slip or failure surface. Mitigation or control of such sliding mass frequently poses an engineering challenge. Micropiles are many a times used to stabilize a slope under certain circumstances. To analyze the effect of micropiles on slope stability, one requires to determine the geo-mechanical properties of the strata, slope geometry, micropile diameter, lengths, and locations of such installations. Hence, it becomes a complex interaction problem. In the present study, an active landslide in Tehri Garhwal district of Uttarakhand state of India has been chosen for demonstration of micropile reinforcement technique. After characterization of the slope material, factor of safety of the untreated slope under different degree of saturation have been evaluated by utilizing different limit equilibrium methods for static and pseudo-static conditions. Since the failure surfaces for all the simulated scenarios have been obtained at deeper depths, it was fathomed that deep-seated slip movements need to be arrested partially or fully for which slope reinforcement with micropiles will be a good choice. A parametric analysis was conducted to assess stability of the slope with single rows of micropiles with different diameter, spacing, and aspect ratios. The results show that the slope stability improves satisfactorily for certain cases.
Stability Analysis of a Debris Slope by Micropile Reinforcement Technique: A Case Study from the North-Western Himalayas
Lecture Notes in Civil Engineering
Ghosh, Chandan (Herausgeber:in) / Kolathayar, Sreevalsa (Herausgeber:in) / Pandit, Koushik (Autor:in) / Singh, Mahendra (Autor:in) / Sahoo, Jagdish Prasad (Autor:in)
02.03.2022
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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