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Slope stability simulation is one of potential landslide mitigation that executed by PT. Arutmin Indonesia. Previous simulation didn't added dynamics of rainfall as <br /> <br /> <br /> input. To get closest modeling results to real phenomenon, dynamic data of rainfall that...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/20165 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Slope stability simulation is one of potential landslide mitigation that executed by PT. Arutmin Indonesia. Previous simulation didn't added dynamics of rainfall as <br />
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input. To get closest modeling results to real phenomenon, dynamic data of rainfall that affect pore pressure condition is actually needed. This research explains the dynamics of change in pore pressure due to precipitation infiltration and its effect on slope stability at mine area. Parameter in following analysis of slope stability in this research is parameters of <br />
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mechanics, pore pressure which is represented in pressure head, and safety factor (FS). TRIGRS simulation gives larger pore pressure value and smaller FS value <br />
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compared to SLIDE which increase landslide vulnerability. Both variables have positive linear correlation coefficient value about 0,40 which indicates good connection. One of alternative solutions to lower pore pressure to achieve slope stability is dewatering activities that produce groundwater level that will be used as simulation input data. This research use two dewatering scenarios, horizontal drain holes installation 100m space (DH 100m) and 50m space (DH 50m). Optimum value acquired by DH 50m dewatering scenario. It's capable of narrowing critical zone <br />
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area until 29% while DH 100m only able to achieve 7% compared with natural condition. |
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