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Coal Engineering ›› 2026, Vol. 58 ›› Issue (8): 15-21.doi: 10.11799/ce202608003

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Design of hoisting conveyance arrangement and key technological innovations for the auxiliary shaft of Shitoumei No. 2 Mine#br#

  

  • Received:2026-04-27 Revised:2026-06-29 Online:2026-08-15 Published:2026-08-31

Abstract:

To address the engineering challenges such as the efficient lowering of large-scale equipment and the coordinated operation of dual systems in the auxiliary vertical shaft of ultra-large mines, and to improve mine production efficiency, this study takes the Shitoumei No.2 Mine with a designed production capacity of 8.00 Mt/a as the research object to carry out the design of hoisting container layout schemes and research on key technological innovations for the auxiliary vertical shaft. In combination with the mine's hoisting task requirements, three layout schemes were proposed, namely the combination of wide and narrow cages with a shaft diameter of 10.0 m, the configuration of wide and narrow cages with a shaft diameter of 10.6 m, and the combination of wide cage and transport cage. A systematic comparative analysis was conducted from three dimensions: technical performance, economy and system reliability. The results show that the scheme of wide and narrow cage configuration with a shaft diameter of 10.6 m (Scheme 2) features sufficient hoisting capacity and safer and simpler equipment loading and unloading operations. Although its one-time construction investment is slightly higher, it has high system redundancy and strong risk resistance with prominent comprehensive advantages, thus being identified as the optimal scheme. To ensure the implementation of the optimal scheme, key technologies such as the customized structural design of a special double-deck wide cage and the optimization of integral lowering technology for large hydraulic supports were developed. Through measures including precise dimension optimization, high-strength and lightweight structural design, and the matching optimization of lowering process and system capacity, the safe and efficient integral lowering of 48 t hydraulic supports was realized, which solved the core technical problems in the hoisting of the auxiliary vertical shaft of ultra-large mines. The research results provide a reliable reference for the hoisting design of auxiliary vertical shafts in ultra-large mines under the same conditions and have a demonstrative significance for promoting the technological progress of coal mine vertical shaft hoisting.

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