Sensitivity Analysis of Transport Machinery Configuration in Underground Cavern Group Construction

Abstract

The method of drilling and blasting is widely used in the construction of an underground cavern group. In the whole process, the slagging occupies 40–60% of overall cycle time. Therefore, it is important to optimize transport machinery configuration in order to reduce the time of slagging, and improve the overall efficiency of construction. In this paper, sensitivity analysis was applied to study the relations among the time of slagging, configuration of truck, and the number and capacity of loader when trackless transport was utilized in the construction of an underground cavern group. The analysis was based on the data of underground cavern group in JINPING II hydropower construction. The analysis results could be used to guide the configuration of mechanical equipment.