Improvement of overall equipment performance of underground mining machines

1. Overall efficiency (ῃOE)

1.1. Overall efficiency is the product of CU based on AMH and Production Efficiency of subjected machine or equipment.

2. INLUENCING FACTORS OF PRODUCTIVITY

2.1. In underground mining operation wide variety of parameters are affecting to the productivity

2.2. Machine related problems such as breakdown of LHD, poor performance of LHD

2.3. Mine related problems such as breakdown of drill machine, lack of sufficient blasted ore

2.4. These records will present a comprehensive idea of failure characteristics of the machine

3. RESULTS AND DISCUSSION

3.1. After identifying the influencing parameters of productivity, it is necessary to determine the performance of equipment

3.2. The month wise details regarding maintenance hours, breakdown

4. Percentage Availability (PA)

4.1. It is defined as the available percentage of machine to perform its specified task at its working face

4.2. calculating the percentage availability SSH is taken as total TSH for a period

4.3. The idle period of less than or equals to 15 minutes can be ignored

5. Production Efficiency (ɳPE)

5.1. Production efficiency is defined as the ratio of actual production to its target production of the equipment.

5.2. When an LHD machine is treated as individual equipment i.e. performing the operations of both loading

6. The overall equipment performance (OEP) of the machines are mainly depends on its effective utilization

7. Producing of projected level minerals in a stipulated period of time is mostly depends upon proper utilization of equipment and their consequences

8. Capacity Utilization (CU)

8.1. CU can be defined as the ratio of working hours of the machine

8.2. Production efficiency is defined as the ratio of actual production to its target production of the equipment