SU756013A1 - Method of mining thick ore deposits - Google Patents

Description

The invention relates to the mining industry and can be used in the development of powerful deposits of valuable ores ·

There is a method of developing powerful deposits by continuous excavation with chambers (vertical cut-outs, panels) with drilling workings on the hanging side of the field and delivery workings on a recumbent side, drilling and blasting breaking and unloading ore from the chamber with self-propelled equipment followed by filling the developed space by hardening laying [1 ].

A drawback of the existing method are the losses of valuable ore in the ridges on the bottom of the unit, the limited ^{productivity,} and ⁵ telnost danger of reference works in connection with the need to stay in the purification of the working space.

There is a method of developing powerful ore deposits, including a continuous 20 ore-digging chambers, carrying out the workings of the upper and lower cuttings, drilling and blasting ore blasting into the compensation space, the release of ore and laying out

botanical space hardening mixture [2].

This method is characterized by low efficiency of mining.

The aim of the invention is to increase the efficiency of mining.

This goal is achieved by the fact that the development of the lower sweep expands at a site equal to the width of the chamber, install supports in them, mount vibration feeders on the latter at an angle to the horizon, and form the formwork obliquely to the roof of the said sweep from the sides and ends of the vibrating feeders and simultaneously with the laying the previously spent adjacent chamber fills the space under the formwork and vibrating feeders, and after hardening they beat off the chamber reserves on the equipped cutting, and also on the formwork with lateral and the end face vibrating feeder sets the angle of repose.

FIG. 1 shows practiced

cameras, in plan; in fig. 2 - section A — A

FIG. one; in fig. 3 — section B — B of FIG. one.

756013

The division of the reservoir into excavation areas and chambers 1 of penetration of drilling workings 2 and the workings of the lower undercut 3 are carried out by known methods and machines. Segment of the camera 1 from the array and drilling of wells 4 are also known methods and machines. Before crushing the ore in the chamber being prepared for mining in the workings of the lower sweep 3, supports 5 are installed. The height of each of the supports 5 is determined by the place so that the vibrating feeder 6 mounted on them is set at the required angle to the horizon at which the most favorable parameters of its operation are ensured (productivity, completeness ore production, lower energy costs for ore delivery). From the sides of the vibrating feeders 6 install the formwork 7 to the roof making the lower sweep 3, then fill the remaining volume of the lower sweep hardening bookmark simultaneously with the filling of the waste and prepared for the camera tab. Hardening tab in the waste space serves, for example, through the filling well 8 from the ventilation-filling the horizon.

When filling the workings of the lower sweep 3 under the vibrating feeders form the base 9, and under the protection of formwork 7 - ore discharge trench 10 of the hardening bookmark 11.

After hardening the tabs 11, layer-by-layer breaking of the ore is carried out using wells 4 into the compensation space using known techniques.

The release of broken ore from chamber 1 is conducted by vibrating feeders 6. Ore is delivered and transported by known means, for example by conveyors 12.

After the ore is released from the chamber, the vibrating feeders 6 are disassembled, preparatory work is carried out on the bottom of the neighboring chamber according to the technology described above, and filling the developed space with a hardening tab.

After hardening the tabs, the adjacent chamber is tested, and the cycle repeats.

In order to reduce the loss of ore in the bottom of the chamber, making the lower sweep 3 within the contour of the chamber being prepared for mining can be increased to the maximum possible width, based on the stability conditions of the ore body, i.e., the chamber is completely hooked. If under the conditions of the stability of the array it is impossible to completely hook the camera, then between the workings of the lower hooking 3 leave the tape supporting pillars. The seizure of tape supporting pillars is carried out by well-known methods after working out the area (series of chambers) of hardening the bookmark. In order to reduce the loss of broken ore on the artificial bottom and reduce the number of vibrating feeders 6 in chamber 1, formwork 7 can be installed at an angle of repose of broken ore. In order to increase the strength of the artificial bottom with vibrating feeders mounted into it 6, the filling of the workings of the lower hooking 3 can lead to a hardening bookmark of increased strength.

The application of the proposed method of developing powerful ore deposits by continuous excavation chambers eliminates ore losses from the deposit and the ore collapsed over the artificial bottom, ensures high performance of the chamber for the production and loading of ore through the use of high-performance vibrating feeders mounted on an artificial bottom and significantly reduce the cost of construction of the artificial bottom from the hardening bookmark.

Claims (3)

Claim 1. The way to develop powerful ore deposits, including continuous ore extraction by chambers, carrying out the workings of the upper and lower cuttings, drilling and blasting ore blasting into the compensation space, production of ore and laying the worked-out space with a hardening mixture, in order to increase the efficiency of mining by simplifying manufacturing of the artificial bottom and reducing the time for preparing the chamber, making the lower sweep expand on the area equal to the width of the chamber, install supports in them, mount the latter on them The idle feeders are angled to the horizon, and from the sides and the ends of the vibrating feeders, install the formwork obliquely up to the roof of the indicated hooking and simultaneously with the laying of the previously spent adjacent chamber fill the space under the formwork and vibrating feeders, and after hardening the tabs beat off the chamber stocks on the equipped hooking. 2. The method according to π. 1, characterized in that the production of notches in the area equal to the width of the chamber, increase in cross section to the maximum possible width. 3. The method according to p. 1, characterized in that the formwork from the sides and end of the vibrating feeder set at an angle of repose ore.