SU968408A1 - Method of working sloping thick ore deposits - Google Patents

Description

(54) METHOD FOR DEVELOPING SUSPENSIVE LOW-PREPARED ORE DEPOSITS

The invention relates to the mining industry and can be used. It is called for the underground mining of steeply low-grade ore bodies.

There is a method of downward excavation — difficult deposits or interchamber pillars using an advanced trench or target, under the cover of a multi-layered timber floor of logs 1.

There is also known a method of developing steeply low-grade ore bodies in small capacity, including a descending layer-by-layer ore extraction with a solid face from the rebels, fixing frames, laying wooden decking directly on the soil or on struts, laying laying up rocks and scraper delivery of broken ore ore dischargers and rebels .2.

The disadvantages of the known methods are that when mining the ore beneath the flooring, which is laid directly on the soil or on the struts, due to the absence of space between the exploding ore mass and the flooring, the flooring may be damaged by an explosion, which will cause spilling of the backfill,

material for broken ore and deterioration of safe working conditions in the downhole.

The aim of the invention is to improve. improvement of work safety and reduction in the consumption of fixing materials.

The goal is achieved by installing the flooring above the cleaning space of the excavation layer.

10 and as the layers are excavated, they are released by rearranging the spacer mines, starting from the boundaries of the block and changing the direction of work in the adjacent layers.

15

The drawing shows the ore body being worked along the strike, a vertical section.

The unit for training is prepared with drifts 1 and rebels 2.

20

The clearing dredging is started with a solid bottom-to-bottom crushing of the first several layers of ore from the soil of the upper haulage road 1. The broken ore is scraped to the ore-discharge

25 branches of the insurgents 2.

To enclose the clearing space 3, a row of sliding metal mines 4 is installed in the block from one block boundary to another.

Claims (2)

30, and they were erected with a flexible wooden deck mat 5c with a rock cushion 6 due to undercutting side rocks or using rock from mining and sinking works. As the layers are crushed and dug out and the broken ore is cleaned, 8 sliding ore-resistant plants are installed in a new row, removing them from the upper row and gradually laying the floor on them. In adjacent layers, the direction of work is reversed, thus preventing the floor from slipping into one l direction. .The application of the proposed method of development ensures an increase in the safety of operations and a reduction in the consumption of fixing materials, as well as an increase in the stability of the material and the reliability of its management. Claims of Invention A method for developing steeply dipping low-thickness ore deposits. / / / including the excavation of ore by solid bottom from horizontal upward layers, laying of insulating depleted flooring on spacer ditches and delivery of rebels broken by it to the ore-discharge branches, in order to increase the safety of work and reduce the consumption of fixing materials the flooring is installed above the cleaning space of the excavation layer and, as the layers are excavated, lower it by rearranging the spacer beds, starting from the block boundaries, changing the direction p bot in adjacent layers. Sources of information taken into account in the examination 1..The author's certificate of the USSR No. 78512, cl. E 21 C 41/06, 1948. 2. Popov G.N. Technologists and complex mechanization of the development of ore deposits. M., Nedra, 1976, p. 257-258 (prototype).