Stoping technical method for controlling hanging wall surrounding rock ground pressure by adopting stope room retention blasted pile

• Main Authors: ZHANG RUI, HAO XIANFU, LIU CAILIN, MENG HUIMEI, CHAI HENGSHAN, JIN MINGZHEN, WANG ZHONGQUAN, JIAO MANDAI, WANG YONGZHI
• Format: Patent
• Language: Chinese; English
• Published: 22.10.2021
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; MINING OR QUARRYING

The invention relates to the technical field of stoping, and discloses a stoping technical method for controlling hanging wall surrounding rock ground pressure by adopting a stope room retention blasted pile. The stoping technical method comprises a stress rising area, a stress tending-to-be-normal area, a stress normal area, a retention blasted pile and a goaf interval, and further comprises the following steps of: S1, combined blasting: performing blasting for stope room stoping in four times, carrying out four-time blasting on a 0m middle section, a 12m subsection and a 26m subsection according to the areas I, II, III and IV, and controlling hanging wall ore to be discharged in a lagging manner; and S2, ore removal: conducting ore removal from the footwall after each time of blasting, and keeping the ore within a certain range below the hanging wall surrounding rock. The stope room retention blasted pile can be adopted to control the hanging wall surrounding rock ground pressure according to an ore body di