Successful breakthrough was achieved at LV Decline of Kamoya Copper & Cobalt Mine at the sound of a blast on 24th Aug by Beam Mining & Construction SARL, marking another triumph of breakthrough in ultra-long single-end development, following the successful breakthrough at HV decline of this project.
LV decline is one of the key works for access to the deep orebody from the surface. The successful breakthrough of LV decline highly facilitates subsequent works and operations of mechanized fleet, improves underground haulage conditions, and enables the installation, lowering and transportation of large equipment and materials.
Since commencement of works at deep orebody of Kamoya Copper & Cobalt Mine in H2 2019, multiple challenges were encountered due to complex geological and hydrological conditions, such as karst cave aquifer, fissure aquifer, weak breccia layer. The fissure aquifer alone is nearly 700m long, which brought more risks to the works, especially under difficult ventilation and drainage conditions in long-distance single-end development.
Rising to the challenges, breaking new ground, and fighting tough battles are the spirits of JCHX workers. Looking back, over 1,000+ day and night, the team put safety and quality first during construction, worked closely with the Owner to formulate targeted measures to work through aquifer, such as cover-drilling, grouting, shortening cover drilling length and reducing advance per blast, depending on which work was progressed with high efficiency and good safety performance. Management personnel stuck on site to work hand-in-hand with front-line employees and to ensure the implementation of various safety and technical measures and ensure the progress of all works.
