Zoned upward layering filling mining method for medium-thick steep dip extremely-broken ore body

Abstract

The invention provides a zoned upward layering filling mining method for a medium-thick steep dip extremely-broken ore body. The method comprises the steps that a ore block structure is divided, the ore body is divided into a plurality of stages in the vertical direction, a plurality of stopes are divided along the direction of the ore body in the stages, the stopes are divided into a plurality ofpartition units, and isolated ore walls are reserved between the partition units. The method comprises the specific steps that stope preparation engineering is carried out, and a stage transportationroadway, a stage ore drawing transverse roadway, a human traveling windmill shaft, a human traveling windmill shaft connecting roadway, an ore pass and a filling return windmill shaft are arranged ineach partition unit; cutting and supporting are carried out, particularly, long anchor cable pre-supporting protection roof control is carried out on the broken ore body at the bottom pulling layer;blasting is carried out, particularly, upward holes are drilled on the bottom pulling layer, and upper-layer ore caving is carried out; and stoping and ore drawing are carried out, particularly, according to the stope mining sequence, each partition area in a stope is simultaneously mined layer by layer from bottom to top, one layer is mined, one layer is filled, and the like until the whole stopeis completely mined. The method has the advantages that the safety is improved, the ore recovery rate is high, the mining is efficient, and the stope preparation amount is small.

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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