SU1559182A1 - Mine working support - Google Patents

Abstract

The invention relates to mining and can be used for fastening mine workings. The goal is to increase the sustainability of production by creating a constant contact of flexible pickups with its contour (K) under the action of alternating deformations on it. The support consists of short 3 and long 4 anchors (A). Short A 3 are fixed within the zone of 5 intensive displacements of rocks, and long A 4 are moved beyond its limits. Flexible pods are fastened on A 4, which are made of series-connected multi-pin elements (E) 10 and 17. E 10 are made in the form of rounded brackets, deforming in the direction perpendicular to K generation, and E 17 - in the form of springs deforming in the parallel direction its K. The stiffness of the E 10 is greater than the stiffness of the E 17. Through the E 10, 17 and the shanks A 4 a flexible link 16 is passed, fixed on the shanks A 9,20. During the tension of the flexible coupling 16, the entire system E 10.17 is in a prestressed state. Under the action of alternating deformations on K, the interaction of E 10.17 between them ensures a constant contact of E 10 with K of generation. 2 hp f-ly, 3 ill.

Description

and the shanks A 4 missed the flexible connection 16, attached to the shanks A 9, 20. When tensioning the flexible connection 16, the entire system E 10, 1.7 is in a prestressed

condition. Under the action of alternating deformations on K, the interaction of E 10, 17 between them ensures a constant contact of E 10 with K of development, 2 Cp. f-ly, 3 ill.

The invention relates to mining and can be used for fastening mine workings.

The aim of the invention is to increase the stability of production by creating a constant contact of flexible pickups with its contour under the action of alternating deformations on it.

FIG. 1 shows the fixed production, general view; in fig. 2 - rounded bracket; in fig. 3 - long anchor shank.

The support consists of 2 short 3 and 4 long anchors installed along the contour 1. Anchors 3 are fixed within the zone of 5 intensive rock displacements. Anchors 3 are visited by a net-tack 6 adjacent to contour 1, covered with sprayed concrete (not shown).

The long anchors 4 are installed at the places of change of the curvature of the rock contour 1 and secured with the help of locks 7 located in the holes of the wells 8 behind the zone 5 of intensive rock displacements. On the long anchor 9 is installed elastic element 10, made in the form of a rounded bracket. The element 10 due to the presence of the hole 11 is pressed to the contour 1 and the grid-tightening 6 with the help of the base plate 12 and the nut 13 screwed on the shank of the long anchor 9. Through the lugs 14 long anchors 4 and the hole 15 of the elements 10 the bending is missed 16. Between the elements 10 on the flexible coupling 16 spring elastic elements 17 are placed, having a stiffness less than the stiffness of the elastic elements 10. Closing elastic element 18 is pressed by the jack 19 and fixed on the anchor 20 similar to its fastening on the anchor 9.

The support works as follows. After the installation of short anchors with a mesh-tightening and covering it with a foundation stone, a carrier rock zone is created in the range of the length of short anchors. Due to the construction of long

Anchors and installations of elastic elements of the bearing rock zone are suspended on long anchors, since their locks are brought out of the zone of intensive rock displacements. The tension of the flexible connection and its location parallel to the development contour provide the response of the round brackets to the displacing pedigree.

0

five

0

contour, increasing jamming

the structural blocks of the marginal array are interconnected, while the entire system of elastic elements is in a prestressed state.

5 With the displacement of the breed contour

Claims (3)

Inwardly, the support works in the mode of increasing resistance due to the increase in the resistance of spring elastic elements with a clamp-shaped element. In the case of restoration of the rock contour (array unloading mode) as a result of the interaction of differently rigid elastic elements, the reaction of their repulse to the rock contour remains constant. With repeated unloading and array loads, i.e. in case of multiple alternating deformations, for example, multiple underworking or development, the interaction of the support structure is not disturbed, thus achieving its efficiency and reliability. Invention Formula 5 1 Mine support, including anchors attached to the zone of intensive rock placement and associated flexible clamps interacting with the production contour, so that, in order to increase production stability by creating permanent contact flexible pickups with its contour under the action of alternating deformations on it, flexible pickups are made in the form of successively interconnected flexible elements, and the elements having greater rigidity are made deforming in the direction Perpendicular vfabotki circuit, and the elements with lower hardness - in a direction parallel to its contour. 2. Kpenij according to claim 1, characterized in that the elements that are deformed in the direction perpendicular to the contour of generation have the form of rounded brackets, facing convexity 91826 towards the contour of the excavation, and the elements deforming in the direction parallel to its contour are the type of springs. 3. Krep popp. 1 and 2, characterized in that the elements are placed on a flexible connection connected to the shanks of the anchors. FIG. 2 h & Fig.d TO