Chute for storing ore in opencast quarry and mining method of opencast quarry

Abstract

The invention provides a chute for storing ore in an opencast quarry and a mining method of the opencast quarry. The advantages of stepped mining and layered mining in safety and economy are fully absorbed, an opencast mining method for unified management of ore rock humping through the chute by use of natural dip angles and height difference of hillsides is formed, and the technical problem that safe uphill transportation roads are difficult to build when bamboo shoot type isolated peak ore deposits are mined in the stepped manner is solved. Original terrains are fully used, and the safe production requirement can be met while the best economic benefit is obtained; the defect of increase of the production cost due to the fact that ore retained on rock drilling platforms partially after blasting each time needs to be transported secondarily when the bamboo shoot type isolated peak ore deposits are mined in the layered mining manner is overcome.

Description

technical field [0001] The invention relates to the technical field of ore deposit mining, in particular to a chute for ore-drawing in an open-pit quarry and a mining method for the open-pit quarry. Background technique [0002] At present, open-pit mining plays a decisive role in the mining industry. According to statistics, the proportion of open-pit mining in the world's mineral resources has accounted for two-thirds. In the open-pit mining of non-metallic deposits, the main mining techniques include step mining and layered mining. [0003] In step mining, the ore rock is divided into several horizontal layers according to a certain thickness, and it is mined layer by layer in a ladder shape from top to bottom, and a certain advance relationship is maintained; In the stope, at the same time, to make the mining and transportation equipment reach the working level, it is necessary to build an uphill road; Enlargement, the opening of the new step working face enables the s...

AI Technical Summary

Problems solved by technology

[0005] When mining the bamboo shoot-shaped isolated peak deposit (with a slope greater than 45°), if the bamboo shoot-shaped isolated peak deposit is mined by steps, it will be difficult to build a safe uphill transportation road, and at the same time, it is difficult to maintain a certain advanced relationship between the steps of each layer, and there are potential safety hazards , and the production scale of the bamboo shoot-shaped isolated peak deposit is generally small, and the use of stepped mining will increase the infrastructure cost and prolong the production time; A large amount of investment in transportation roads, but after each blasting, part of the ore stranded on the rock drilling platform needs to be re-transported, which will greatly increase production costs; there is an urgent need for a safe, reliable and low-cost open-pit mining method

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