SU1129361A1 - Matching unit for mine workings - Google Patents

Abstract

MINE OF OPTIMIZATION OF MINING WORKS, including vertical and horizontal lining areas, differing in that, in order to reduce material costs for lining, the assembly is provided with slotted mine workings adjacent to the lining, and the opposite slot minements form: an ellipse contour with a larger axis, directed along the direction action of the maximum one voltage in the fixed space.

Description

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Od t The invention relates to the mining industry and is intended for the construction of the junction of shafts with shaft workings and its protection from rock pressure in conditions of underground construction and operation. A known conjugation node, comprising a part of the vertical shaft and stem trunking, is performed. sustained separately and independently of each other to. However, this unit does not provide sufficient stability of the lining. The closest to the proposed result and technical essence is the junction of mine workings, including the vertical and horizontal sections of the C2 3 lining. A disadvantage of the known assembly is the high consumption of materials on the lining at the junction points. . The purpose of the invention is to reduce the consumption of materials for lining. The goal is achieved by the fact that the junction of the mine workings, including the vertical and horizontal parts of the lining, is provided with slotted mine workings adjacent to the lining, and the opposite slotted mine workings form an ellipse contour with a greater ocW, directed along the direction of the maximum main stress in the fixed space . Figure 1 shows the common VID5 junction node in Figure 2 - a diagram of the projections of the arrangement of the slots for the case if the direction of the maximum principal voltage coincides with the direction of the trunk axis, sections A-A and B-B. I. The mating unit includes the trunk 1, the trunk shaft 2, the permanent support 3 of the same profile as outside the interface, the fixed space 4, filled with malleable material. In the massif of the walls of the trunk along its axis in the planes passing through the OSII near-mine workings, slits 5 are made in the gap between them. Slotted workings 5 are made in the form of a series of parallel wells 6, which are selected as approximations of 1.2 to the center of the junction of variable depth. So that the contour 7 of two opposite slits deep in the array has the shape of an ellipse with the dimensions of the axes 3d and 2d. The gaps 8 between the wells are destroyed, for example, by blasting small discharges. The ellipse axes of the contours of the slots are oriented in such a way that the major axis is directed along the maximum principal stress in the mountain range. Data on the direction of main stresses is taken from the results of tectonophysical studies of the region. The gateway operates as follows. As a result of unloading slots in the walls of the trunk in places of greatest stress concentrations and creating conditions for lining and rock slip, the array of rocks in the volume contoured by the elliptical profile of the cracks is deformed without fixing the entire pressure value on the support. The support thus perceives only a part of the stresses, and the main magnitude of the stresses from the loop of the windings is transferred to the array to the depth of the end of the slits and is perceived by the array, which is in a volumetric stress state and can hold much larger stresses without destruction. As a result of this design of the interface, the stability of the support mats is significantly increased without cutting large dome-shaped cavities. The organization of the work on sinking the proposed gateway can be carried out according to the following scheme. After the construction of the last (before the mating) link of the permanent lining 9 and the upper support shoe 10 aisle d, by stopping the trunk 1 up to the soil of the pristolny working method 2 of the mating. The barrel is the same section as before mating. At the same time, bmf t pmura in the bottom of the barrel and horizontal wells 6 in the walls of the barrel to form relief slots. As the bottom center approaches, the depth of the horizontal wells is increased so that along contour 7 there are two oppositesJ 1

In the depths of the array, an elliptical profile with 3d and 2d axes is formed.

The destruction of the remaining between the horizontal wells of the pillars 8 for final clearance of the deposits is carried out, for example, by spraying them with dispersed small charges. After breaking the rock and cleaning it, a temporary support was built. The described operations are repeated in all work cycles until they reach the level of the soil near the tree trunk. Then, the horizontal part of the interface is penetrated with the erection of temporary support. After completion of the dissection, permanent support 3 is erected both in the trunk and in the trunk workings of the interface unit. Having completed these works, they resume the sinking of the trunk below the soil of the stump production. All work is carried out in the same way.

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as in the upper part of the junction assembly, except that the depth of the horizontal wells to form gaps is reduced as it approaches the lower support shoe 11.

The use of the proposed junction provides, in comparison with the prototype, a significant decrease in metal consumption due to a reduction in the cross section of the workings in the junction area J and an increase in productivity and construction speed due to a decrease in the amount of work.

15 for cutting and fastening} improvement of working conditions and operation of the junction node, since the dimensions of the plants are much smaller. In this case, the load on the support mate

20, the gaps are drawn at the indicated interfaces and their configuration is significantly reduced, which increases the stability of the interface.

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Claims (1)

MINING JOINT NODE, including vertical and horizontal sections of the lining, characterized in that, in order to reduce the cost of materials for the lining, the node is equipped with slotted openings adjacent to the lining, and the opposite slotted openings form? * An ellipse contour with a larger axis directed along the direction of action of the maximum main voltage in the fixed space. § ω с £ 3 й С © со Oh>