SU825964A1 - Method of working thick steeply-inclined ore bodies - Google Patents

Description

(54) METHOD FOR DEVELOPING POWERFUL HEAVY DROPPING

ORE BODIES

The invention relates to the mining industry and can be used in the underground mining of powerful steeply dipping ore deposits.

There is a method of chamber development of powerful mineral deposits with ellipse-shaped chambers, mixing them along strike with respect to each other to a height equal to half the height of the floor, using the scraper openings of the upper horizon for drilling deep wells and breaking down ore in neighboring lower-lying chambers, and the chambers work out, when the top half of them are in the concrete layer, and not the USA in the ore massif l.

The disadvantage of this method is in large outcrops of the host rocks, which causes a severe dilution of the ore due to self-destruction of the host rocks, and the bottom development experiences increasing rock pressure of the entire massif of the concrete massif and underworked rocks transmitted through the narrowed lower part of the overlying chamber to the ore massif in which the development of the horizon of release.

There is also known a method for developing powerful steeply dipping ore bodies, which includes ore blasting in chambers of the first and second phases, located across the stretch with deep squalves drilled from subsurface drilling workings with the formation of a roof of arched chambers and vertical chambers walls, production of ore and laying the worked out space of chambers hardening a mixture of 2.

The disadvantages of this method are the extremely large dilution from the collapse of the host rocks and the high costs of sinking and maintaining the workings passed on the ore.

Claims (1)

The purpose of the inventive is to reduce the number of mines from the collapse of the host rocks to the cost of sinking and maintaining the costs of ore. The goal is achieved by the fact that the camera is fought off, leaving the unitary pillar on the height of the CBO-I substage with the apex directed to iBepx, and the broken ore drops the node with its own weight tin between the adjacent surfaces of the specified 1 walls of adjacent chambers. FIG. 1 shows the ore deposit along the strike of the treatment horizon; FIG. 2, section AA — FIG. 1; Within the floor, which is prepared by field transport 1 and. The first two drifts across the strike of the deposit are divided into chambers 1 and t, respectively, first to the second turn. In the lower sub-floor, transport lines 3 and loading races 4 to the border of neighboring chambers intended for ore output pass through the center of the chambers of the first stage. From the transport substations of the upper substage, which were completed during the development of the overlying chambers, drilling and blasting chamber reserves with accumulation of trenches 5 to the full height of the sub-floor, limited by the inclined and vertical ore walls of adjacent chambers of the second stage, was completed, the ore was released from the chambers into the pit. full-time races 4. First-run chambers of the first stage fill the concrete with the use of bookmarks, transport ort of the overlying horizons. After hardening, the zak dock proceeds to develop the chambers of the second stage in the same sequence of operations as chambers of the first stage. The application of the proposed method in the mining industry reduces the dilution of the ore from the collapse of the surrounding rocks and reduces the cost of penetration of the mine workings. Formula of the Invention A method of developing powerful steeply dipping ore bodies, including ore blasting in chambers of the first and second stage, located across the deep well, drilled from sublevel drilling ribs with the formation of a roof of vaulted chambers and vertical walls of the chamber, ore slugging and laying out the developed space of chambers. a mixture, characterized in that, in order to reduce the dilution from the collapse of the host rocks and the costs of sinking and maintaining the workings, passed through the ore, they beat off, leaving the ore pillar to the height of the vaulted substage with the apex directed upwards, and the broken ore is released under the weight of its own weight between the inclined surfaces of the specified pillar and the walls of adjacent chambers. Sources of information taken into account in examination 1, Author GCCP certificate No. 134242, cl. E 21 C 41 / O6, 1960, 2, USSR Copyright Certificate No. 153893, cl. E 21 C 41 / O6, 1962 (prototype).