ANALYSIS EFFECT OF MATERIALS AND DIGGING POSITIONS ON DIGGING FORCES ON A EXCAVATOR 13.5 TON
Demolition and excavation are important mining processes. Excavation can be done mechanically using a hydraulic excavator on reasonably soft and distributed material. Mining expenses can be reduced by selecting tools that are appropriate for the type of material and production targets. The effective...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/69094 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Demolition and excavation are important mining processes. Excavation can be done mechanically using a hydraulic excavator on reasonably soft and distributed material. Mining expenses can be reduced by selecting tools that are appropriate for the type of material and production targets. The effectiveness of excavation can be influenced by a number of factors, one of which is the excavation distance. The study was done to assess the influence of excavation distance on excavation efficacy. The specific energy required to extract the material reveals the level of effectiveness of excavation. It uses the value of the excavation force and the volume of the excavation to calculate the specific energy value. The excavation force is calculated using the Artificial Neural Network (ANN) approach, which predicts strain changes that occur during excavation.
Data was acquired utilizing the Data Acquisition System (DAQ) technique. DAQ components include sensors or transducers that convert physical properties to electrical signals, DAQ gear, and a computer. This test is performed under a variety of settings based on the angle of the bucket when pressed. The angles employed are 50°, 60°, 70°, 80°, and 90°. With two excavation materials, the excavation distance is 4 meters and 5 meters from the tool body.
Excavated materials with dry characteristics have a lower specific energy value than excavated materials with wet features. The graph shows that the specific energy of material 2 is always lower than that of material 1. The effective excavation distance is 5 meters, as evidenced by the value of the volume excavated, which is more than the distance of 4 meters and a smaller value of specific energy. The effective excavation angle for material 1 is 80° with a specific energy value of 36.90 kJoule/m3 and 90° with a specific energy value of 54.98 kJoule/m3. |
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