Surrounding column stoping method for high and large point columns of underground mine

• Main Authors: WAN LINHAI, LI XIAOZUAN, WU FEI, GAO TAO, WANG YI, SUN JIAN
• Format: Patent
• Language: Chinese; English
• Published: 28.12.2021
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; MINING OR QUARRYING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention belongs to the technical field of underground mine mining, and particularly relates to a surrounding column stoping method for high and large point columns of an underground mine. The surrounding column stoping method comprises the following specific steps that S1, an artificial concrete false roadway is erected, specifically, after stoping and mining in a stope are finished, the artificial concrete false roadway is erected on an ore body to the bottom of a to-be-stoped ore column by utilizing an artificial false roadway technology, corner cutting mining is carried out on the top and the bottom of a stoping pillar by personnel and materials through the false roadways, so that the form of the pillar is relatively regular, thereby the ore body is obtained, and surrounding rocks are arranged on the ore body; and S2, concrete surrounding columns are built, and the ore body is treated by using a scaffold and a formwork. According to the stoping mode, the safety of personnel and equipment channels is