Full
Outline
To address the challenges of complex preparation work and difficult roadway excavation within backfill bodies encountered in thick ore bodies using conventional open stoping with subsequent filling mining method, a new stoping technique combining remote-controlled LHD with flat-bottom structures for ore removal has been proposed. Based on the ore removal system utilizing LHD with flat-bottom structures, theoretical calculation formulas for the ore removal volume contribution coefficient of LHD were established under the working conditions of four different stope layout directions and stope structure parameters. An optimized method for determining the stope structure parameters was proposed for the improved traditional open stoping with subsequent filling mining method. Taking the Bangzhong Zinc-Copper Mine as the engineering background, an application research on the open stoping with subsequent filling mining method based on the LHD with flat-bottom structure mining system was carried out. The design method of the mining site structure parameters was also introduced. The results show that, the method can achieve a 21% reduction in stope preparation engineering quantity, an approximately 12% decrease in ore loss, and a 22% ore output ratio for remote-controlled LHD (the theoretical value is 19.6%). The preparation-cutting-extraction cycle of a single stope is comparable to that of the original mining method. The study results provide innovative solutions for the safe and efficient extraction of thick and large ore bodies.
39
13
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
