Thin ore body up-down medium-length hole subsequent filling mining method

Abstract

The invention discloses a thin ore body up-down medium-length hole subsequent filling mining method which comprises the following steps: arranging a stope along an ore body according to the occurrence and inclination angle of the ore body without reserving top and bottom columns; stope parameters are determined; mining and cutting: horizontally constructing a bottom drift-following roadway along the ore body in the middle section, considering a bottom ore receiving roadway, a cutting roadway and a bottom rock drilling roadway along the drift-following roadway, constructing a transportation roadway outside the drift, and constructing an ore removal roadway to connect the drift-following roadway with the transportation roadway; constructing a vein-following roadway on the upper middle section along the ore body, and determining the size of the vein-following roadway according to downward rock drilling equipment and blasting parameters; the cutting courtyard is formed by two-time blasting of an upper section and a lower section; stoping is conducted, downward holes and upward holes are constructed at the same time in the upper and lower vein-following rock drilling space in a bidirectional staggered mode, all the drilled holes are parallel holes, then ore breaking is conducted in a two-time detonation mode or a sequential detonation mode, and ore drawing is conducted from an ore drawing roadway to a vein-following roadway through an outside-vein transportation roadway; and filling is conducted, all the channels are blocked, subsequent filling is conducted on the goaf, and the thin ore body can be rapidly and efficiently stoped in a low-lean-loss mode.

Description

technical field [0001] The invention belongs to the field of mine ore body mining, and in particular relates to a mining method for subsequent filling of upper, lower, middle and deep holes of a thin ore body. Background technique [0002] When thin ore bodies are mined, the shallow hole ore retention method is generally used for mining, which has problems such as high labor intensity, low degree of mechanization, high production costs, and low mining efficiency. In recent years, with the advancement and development of technology, for this type of ore body, it is proposed to use medium and deep holes for mining, but due to the huge limitation of equipment accuracy, YGZ90 or T150 drilling rigs are mainly used for construction, and the overall rock drilling efficiency is low. It is difficult to control the dilution loss, and the cutting of the raised shaft requires manual or raised drilling rig construction, which has certain safety risks. The mining and cutting work requires ...

AI Technical Summary

Problems solved by technology

[0002] When thin ore bodies are mined, the shallow hole ore retention method is generally used for mining, which has problems such as high labor intensity, low degree of mechanization, high production costs, and low mining efficiency.

In recent years, with the advancement and development of technology, for this type of ore body, it is proposed to use medium and deep holes for mining, but due to the huge limitation of equipment accuracy, YGZ90 or T150 drilling rigs are mainly used for construction, and the overall rock drilling efficiency is low. It is difficult to control the loss of dilution, and the cutting of the raised well requires manual or raised drilling rig construction, which has certain safety risks, and the amount of mining and cutting works is large, resulting in the overall recovery efficiency being inferior to the original shallow hole retention method.

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