RU1789718C - Flexible separating roofing - Google Patents

Abstract

Usage: in the underground development of steeply falling ore bodies of medium power. SUMMARY OF THE INVENTION: The overlap consists of separate rectangular sections 1 and, in particular, a conducting grid 3. The latter is located above sections 1. For connection by ropes 8, sections 1 are arranged to form common cells. 3 ill.

Description

Figure 1

The invention relates to the mining industry and can be used in the development of steeply falling ore bodies of medium power .. ,,. ,, by the opinion of a flexible dividing overlap.

A flexible dividing overlap is known which consists of synthetic net webs. Unlike ceilings made of sections, including longitudinal and transverse metal tapes, or metal strips and ropes, or several layers of metal nets, a 1 and 5 overlap made of synthetic mesh canvases improves the efficiency of the ceilings in contact with the host rocks and reduces ore depletion .

Flexible synthetic overlap has a significant impact on the formation of the discharge patterns and the quality of the exploded ore recovery under collapsed rocks. The horizontal arrangement of the floor during its movement to the discharge horizon ensures maximum extraction of ore from the treatment unit. Knowing the position of a moving floor in the space of a treatment unit filled with blasted ore and collapsed rocks provides the ability to control the process of ore discharge under the floor. In the case of metal ceilings, due to their high conductivity, this problem can be solved by geophysical methods. A more effective flexible dividing floor made of synthetic fabrics does not have this property, which is its drawback.

The purpose of the invention is to reduce the cost of installation of the ceiling, the uniform distribution of its bearing capacity and the provision of control over the position of the ceiling in space during ore production and control of this process.

The goal is achieved in that the synthetic base of the ceiling is additionally provided with a conductive mesh placed above the rectangular sections, which are located with the possibility of superimposing the outermost cells of the neighboring sections with the formation of common cells for placement of the connecting cable.

In FIG. 1 shows a section of a flexible partition floor; in FIG. 2 is a flexible dividing overlap at the junction of adjacent sections; in FIG. 3 is a cross-sectional view of the strike of the block being worked out.

The flexible dividing overlap consists of separate sections 1 of a rectangular shape made by weaving a net

blades of synthetic ropes 2 and current-conducting grids 3 of the same size as the sections, or smaller, interconnected by a wire with an inlet, and with a current source 4, which is located in the output 5. wire 6 with a coil 7 for free exhaust winder. Synthetic sections are interconnected by superimposing edge cells of adjacent sections on top of each other.

ha and passing through them connecting channels 8, the total bearing capacity of which corresponds to the bearing capacity of the ceiling. Bearing capacity requirements do not apply

5 to the conductive part of the floor, since it plays the role of only an electric current conductor, the location of which relative to the outlet workings in the block is determined by electrical exploration methods. An example of a specific application is the installation of a flexible dividing ceiling made of net webs made of synthetic ropes with a diameter of 16 mm and a carrier

5 with a capacity of 3.6 tf. With this in mind, as well as whose size is 0.2 m, the ceiling section has a load capacity of 24 t / m. In order to evenly distribute the load bearing capacity of the floor, the net webs are joined by superimposing one another, into which seven ropes are passed with a total bearing capacity of at least 24 t / m. For example, a roll volume 5 is rolled on top of a synthetic substrate onto a metal mesh (such as a netting) which is connected by wire to an electrical circuit with a current source at the level of the discharge horizon. The overlap moves evenly

0 together with the rock mass, does not allow the penetration funnel to develop, protecting the ore from dilution. The outlet figures in this case expand, and the ore ridges between the outlet openings to a certain extent

5 are crushed by a horizontally spaced overlap, thereby reducing block losses. The position of the flexible dividing overlap with conductive grids forming one conductive surface, not necessarily continuous, is controlled by the charged body method. One electrode is grounded in the preparatory mine 9 at a distance of 5-10 or more times greater

5 sizes of flexible floor, the second is the conductive part of the floor. In the circuit created in this way, low-frequency current is excited by means of a generator, which is included in the set of equipment for low-frequency inductive electrical exploration 4, located in the orth-race 5. Further, in block rebels and in the well 10, 100 mm in diameter, drilled by the NKR-100 m between with delivery horizons parallel to the lying side of the ore body in the center of the block; periodically during the general ore discharge period, the vertical component of the alternating magnetic field strength is measured using serial ASL equipment -40 or Lapis-11. To this end, the sensor 12 is moved along the well and block risers. According to the anomalies of the vertical component of the magnetic field strength, the location of the overlap is fixed at the ends (through block risers) and the price

5

block (downhole), and the nature of the overlap movement at the indicated points is determined by the displacement of the anomalies.

The plan of works for the production of ore from under the ceiling is compiled so that it falls horizontally under the pressure of the collapsed rocks, which ensures maximum extraction of the mineral. The adjustment of the release plan is performed by the control of the movement of the floor.

An advantage of the present invention is its ability to be subject to observation by electrical prospecting methods.

Claims (1)

SUMMARY OF THE INVENTION A flexible dividing ceiling including rectangular sections connected by connecting ropes made of intertwined synthetic ropes with the formation of cells, characterized in that, in order to reduce the cost of installing the ceiling, uniform distribution of its carrier the ability and control of the position of the overlap in space during ore discharge and control of this process, it is equipped with a conductive grid placed over rectangular sections, which are arranged to superimpose the outermost cells of adjacent sections with the formation of common cells for placement of connecting ropes in them. FIG. g