Cutting-well-free steeply inclined thin ore body mining method

• Main Authors: WANG WEIPING, PAN GUIHAI, MA YINYU, CHEN XINZHENG, LIU LISHUN, ZHOU YABO
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2022
• 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 provides a cutting-well-free steeply-inclined thin ore body mining method, and relates to the technical field of steeply-inclined thin ore body mining, and the method specifically comprises the following steps: 1) ore block division: an ore body is divided into stages and subsections in the vertical direction, a stope is arranged along the trend, and the width is the thickness of the ore body; (2) exploiting a project, wherein a footwall is arranged in a stage along a vein transportation roadway and an ore pass, and a mining area slope ramp is used for communicating the subsection project; (3) mining preparation engineering is conducted, specifically, outside-vein roadways and ore pass united channels are arranged in a segmented mode, and rock drilling roadways are arranged in the ore body in the trend direction; (4) drilling and blasting are conducted, specifically, parallel upward large-diameter empty holes and medium-length holes are constructed in a drilling channel, the diameter of the larg