On 16 Dec, a long-distance full-section breakthrough achieved at HDV Decline of Kamoya Copper & Cobalt Project.
The sinking and driving works in deep orebody at Kamoya Copper & Cobalt Mine is a key project which connect surface to the underground development works, and which shall lay a solid foundation for the establishment of haulage, ventilation, drainage systems in deep zone, and marks a milestone in expediting the development of UG sulfide ore.
The HDV decline is 3989m long with a gradient of -12%, portal elevation at 1465.3m, bottom at 1109.8m. The development work is completed within 883 days, during which a record was created with monthly advancement of 211m/4610.35m³ in single-end decline development, with average monthly development during whole progress of 115m.
Multiple challenges were encountered during the execution of works such as karst cave aquifer, fissured water-bearing stratum, weak breccia, long-distance ventilation, nevertheless all members on site work fearlessly and came up with effective measures through brainstorming.
Particularly during the night shift on 8 Feb, a large karst cave aquifer was encountered during development, for which over 1000m drainage pipes were installed immediately with additional pumps established for dewatering, followed by the construction of bulkhead and grouting for water sealing. The work progress was successfully maintained with such effective measures meanwhile valuable experiences in water control under special rock condition accumulated.
All members on site shall continue to work with enthusiasm and self-motivation, to accomplish annual target while create better records under the fifth five-year strategic plan.
