On January 10, as the final concrete placement was done in the station, the air intake shaft at JM Mine and ZB Gold Mine (Section 2) was successfully completed 87 days ahead of schedule, after 200+ days of hard work.
The scope of work includes 843m deep shaft, 5m of pre-heated air inlet and 5m station at -445mL. With total contract period of 350 days, mobilization was commenced in December 2020 and construction on March 26, 2021.
During construction, JCHX Overseas Division & JCHX headquarters provided great support and all employees on site made tremendous efforts to surmount all challenges by proactively taking following measures:
– Adopt closed-loop management, centralized procurement of daily use articles, establish recreational facilities to spice up spare time for employees;
– Land leveling, installation of water & power supply facilities, and construction of access road were done in parallel to the establishment of temporary facilities on the bank;
– Reduce construction noise by placing sand & gravel at hole bottom and water at shaft bottom, install shaft cover, build noise barrier and install rubber layer at tipping chute;
– Facilitate urgent spare parts needs based on its own turn milling facilities;
– Handle UG water inrush through adopting water catcher to shaft pump station and install additional pumps on stage;
Under the unremitting efforts of all workers, after over 200 days of hard work, the air intake shaft is successfully completed with additional works of 16.1m pump station and 3m pipes done, making a total work quantity of 872.1. Actual work period is only 263.05 days, 86.95 days ahead of schedule. Meanwhile the average sinking rate reached 102.78m.
JCHX team at Bor project will continue to work hard and think proactively in the new year to make bigger contributions to the company and bring more satisfaction to the Owner.
