STUDY OF SOIL SLOPE REINFORCEMENT WITH SOIL NAILING METHOD USING IRONWOOD, CASE STUDY OF HAULING ROAD SLOPE IN PT CIPTA KRIDATAMA COAL MINE
Slope failure is a phenomenon that often occurs in open pit mines, both on pit slopes and backfill slopes. One of the most common types of slope failure is arc failure, which generally occurs on slopes composed of soil material, fracture rock masses, and weathered rock material. One way to preven...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/85006 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Slope failure is a phenomenon that often occurs in open pit mines, both on pit slopes and
backfill slopes. One of the most common types of slope failure is arc failure, which generally
occurs on slopes composed of soil material, fracture rock masses, and weathered rock
material. One way to prevent arc failure is by reinforcing the mine slope or changing the slope
geometry. Ground nailing with wood material is one form of reinforcement commonly used on
slopes in mining areas with soil material, especially on temporary excavation slopes. Besides
being easily available, the use of wood can also reduce costs and is quite easy to implement.
However until now there are not many guidelines that can be used in the installation of
wood/timber nailing in the mining world, especially in Indonesia which has a variety of wood
plants. This lack of guidelines has led to the installation of timber nailing on mine slopes
sometimes not having a strong scientific basis and becoming ineffective. This study examines
the effect of various geometry parameters for installing timber nailing on earthen mine slopes,
including the spacing of timber nailing, and the geometry pattern to determine the best way to
install the nailing. In the case of haul road side slopes, it was found that soil nailing using
timber was done vertically, in rows parallel to the slope strike, with 5m spacing between nails
and the timber used was ironwood. Recommendations for the installation of mine slope
reinforcement with timber materials have also been made referring to the research case,
including the calculation of safety factors on slopes using the Bishop method in slide 6.0,
deformation analysis using RS 2 and comparison with the results of daily movement monitoring
obtained from the shooting of monitoring prisms. |
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