A Partition Upward Layered Filling Mining Method for Medium Thick and Steeply Inclined Extremely Broken Orebody

Abstract

The present invention provides a layered upward filling mining method for medium-thick, sharply inclined and extremely broken ore bodies, which includes: dividing the ore block structure, dividing the ore body into multiple stages in the vertical direction, and dividing the ore body along the direction of the ore body within the stage For multiple stopes, the stope is divided into multiple partition units, and isolated ore walls are reserved between the partition units; the specific steps are as follows: mining standard engineering, in each partition unit, arrange the stage transportation level roadway, stage mine exit horizontal roadway, and personnel Traveling wind patio, pedestrian walking ventilation patio connection lane, ore chute and filling return air patio; cutting and support: pre-supporting and controlling the broken ore body with long anchor cables in the bottom layer; blasting: drilling upward holes in the bottom layer , Caving the upper layered ore; back mining ore extraction: the stope mining sequence, each section in a stope is mined layer by layer from bottom to top at the same time, one layer is mined, one layer is filled, and so on, until the entire stope is mined. Its advantages are: ①Increased safety, high ore recovery rate, high-efficiency mining, ④Less mining volume.

Description

technical field [0001] The invention relates to the technical field of filling and mining technology, and more specifically, relates to a mining method of layered upward layered filling of medium-thick, steeply inclined and extremely broken ore bodies. Background technique [0002] At present, the mining methods for medium-thick and steeply inclined extremely broken ore bodies mainly include segmental caving method without pillar, segmental caving method with pillar, upward horizontal layered filling mining method, upward approach filling method, etc., among which : [0003] The main advantages of pillarless segmented caving method and natural caving method are: the mining method has simple structure, great flexibility, and does not require ore pillars; Mechanized supporting operation, good safety, low mining cost and high production efficiency. Its main disadvantages are: drawing ore under the overburden rock, the loss and dilution rate is high, generally 15% to 40%; the ...

AI Technical Summary

Problems solved by technology

Its main disadvantages are: the loss and dilution rate is high, generally 15% to 40%, when the ore is drawn under the overburden rock; the ventilation condition is poor, and a special ventilation tunnel needs to be constructed; the maintenance workload of the equipment is large, and the maintenance cost is high

Its main disadvantages are: due to segmental mining, the workload of development and mining is large, and the mining cost is high

The main disadvantages are: the exposed area of ​​the stope is large, the personnel and equipment work in the open field, the safety is poor, and the production capacity of the stope is small;

The main disadvantage is that the mining section is small, the mining process is complicated, and the production capacity of the stope is small;

[0007] In summary, the caving method has a high loss dilution rate and serious damage to the surface environment; the upward horizontal layered filling mining method has poor production safety and small stope production capacity; the approach method has complex mining processes and small stope production capacity

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