Research on comparison and selection of vertical shaft development schemes in technical renovation projects

In order to reduce the investment of vertical shaft development in technical renovation projects,shorten the period of the infrastructure construction,three types of shaft development programs making full use of existing shaft development projects and surface structures are put forward to match the production capacity of the north and south plants in view of the different layout of the deep shaft opening projects to better adapt to the occurrence of deep ore bodies.The investment estimates are made for the three schemes respectively.The quantitative and qualitative analysis methods are adopted to analyze the vertical development programs.After economic and technical analysis, operational analysis and comparison of infrastructure cycles, the third scheme is the best vertical development program.The research results indicate that the third scheme makes full use of the existing shaft development project and surface structure to meet the needs of production and upgrading transportation, and that the lifting capacities of the southern and north main well match with the production capacity.Due to the use of central diagonal ventilation, ventilation effect of the third program with less investment and shorter construction period is good.