SU1610030A1 - Yielding metal-concrete support and method of erecting same - Google Patents

Abstract

The invention relates to the mining industry and is intended to fasten mine workings in difficult mining conditions. The purpose of the invention is to increase the carrying capacity of the support. For this, the interconnected nodes of compliance (UE) curved hollow-bearing elements (NE) lining is made of paired I-beams with the formation of a box-shaped cavity (KP). At the same time, the UE is made in the form of an insert made of paired channels, oriented by shelves to each other with the formation of a box section and installed between two neighboring NEs in their gearbox. The liner is connected to the NE by clamps, strips and nuts. In the middle part of the liner are mounted stop flanges with the possibility of contact with the ends of the NE. On the bottoms of the coupled channels, wedge-shaped cuts are made in contact with the interframe straps mounted at the ends of the ne. For erection, the NE supports are installed in turn and connect their UE with maximum expansion. Then, a filler is injected under pressure of 2-3 atm in the form of a fine-grained concrete mortar through the holes made in the NE after the exhaustion of the design code has been exhausted. The lining can be fixed making any sections, ring and arched shape. 2 sec. f-ly, 7 ill.

Description

 The invention relates to the mining industry and can be used for fastening mining in difficult mining conditions. The aim of the invention is to increase the carrying capacity of the support.

Fig. 1 shows a malleable metal lining in its original state and a dashed line after compliance; in Fig. 2, the position of the supports until the implementation of satisfaction; on fig.Z - the same. upon completion of the compliance and injection of the aggregate; figure 4 - section aa on figo1; on fig.Z - section bb in fig.t; on fig 6 - node I in figure 1; figure 7 - section bb In figure 6.

Pliable metal-concrete lining includes curved hollow metal bearing elements 1, made of paired I-beams with the formation of a box-shaped cavity 2, ductility nodes, made in the form of an insert 3 of paired channels, oriented by shelves to each other to form a box-section 4. between two adjacent bearing elements 1 in their box-shaped cavity 2, liners 3 are movably connected to the bearing elements 1 by means of clamps 5, rails b and nuts 7, and in the middle part 3 accommodated thrust flanges

8c contact with the ends

9 carrier elements 1, with wedge-shaped cuts 10 made on the bottoms of paired channel inserts} 3

in contact with interframe straps 11 mounted on the ends of the supporting elements 1, while in the supporting elements 1 there are holes 12 for injecting filler 13 into the box-shaped cavities 2 of the supporting elements 1.

The production of lining elements is carried out in the factory, and their assembly and installation in the mine working.

The support is installed on the maximum thrust, the pliable mode of its operation is provided and after the design has been exhausted (after shrinking, fig. 3), the filling of the aggregate 13 in the form of fine-grained concrete solution under pressure 2- is made through holes 12, filled in the bearing elements 1 3 atm (0.2-0.3 MPa).

The support shrinks after the possibility of deepening the interframe clamps 11 in the wedge-shaped iO of the compliance yoke and abutting the ends of the 9 bearing elements 1 against the stop flanges 8.

The deepening of the interframe struts 11 in the compliance slot 10 occurs with increasing resistance, which is an extremely important factor for the uniform and proportional redistribution of the concentrated efforts on. perimeter lining.

After abutting the ends 9 of the supporting elements 1 on the thrust flanges of rigidity 8, the wedge-shaped cut of the compliance 10 will be sealed, and the holes for installation (passage) of the frame frames 11 will be sealed with the help of a washer 14.

The optimum range of pressure of injection of a concrete solution (for

51610030

filler 13) into the void system of the proposed construction is 2–3 atm (0.2–0.3 MPa), which ensures penetration of the filler 13 and sufficient compaction of the solution in the body of bearing elements 1,

When a concrete solution is injected with a hermal density (mobility) into the system of emptiness of the structure with a pressure of 2 atm, it clogs up due to the roughness of the walls, and when it is pressurized with a pressure of 3 atm, water is pressed from the concrete mixture, which is negative | 5 tflno affects its strength.

The interframe bars 11 pro-P5 1 price through a tubular strut that C1 | is particularly stable with a hollow metal supporting cops and a filler placed in their cavity, characterized in that, in order to increase the holding capacity, hollow metal supporting elements of a cr are made of paired I-beams beams with the formation of box-shaped five, and the nodes of compliance are made in the form of an input from a paired channel-oriented shelves to each other with the formation of a box-section and installed between two carriers elements in their cavity, while the liner is dinene with carriers of the center of clamps, strips and nuts, and with it a part of the insert is placed emphasis

 .,. psi chssshti insert placed on

Bathing frames (rings) along the axis of generation are flanges with the possibility of contact with ki, and also makes it possible with stator ends of bearing elements, with adjacent frames adjacent to each other mounted with longitudinal straps 11, to set each other relative to each other. a friend without a distance rule.

The structure of the support can be made ka: to from the beam of an I-beam profile, such as from and from channels.

The lining of the sections, annular and arched can be fastened with a lining 30 When fastening the excavation with an arch-shaped form, the lower sections of the elements are removed, the metal sheets are welded onto the supporting structures and the concrete pads are placed

wedge-shaped cuts are made on the bottoms of the coupled channels with the possibility of contact with interframe straps

25 mounted on the ends of the bearing elements, while in the bearing elements there are holes for injecting or filling the box-shaped strips of metal bearing elements.

2. A method of erecting malleable metal-concrete lining, including alternately installing and connecting the nodes of flexibility of the load-bearing elements with maximum expansion

35 in the cavity of the carrier elements of the filler after the exhaustive turn of the design, characterized in that the injection of the filler is performed under pressure 2 Formula of the invention)

1. Compliant metal concrete krfp, including interconnected curved nodes

hollow metal bearing elements and a placeholder placed in their cavities, characterized in that in order to increase the bearing capacity of the support, hollow metal support elements of the support are made of paired I-beams with the formation of a box-shaped cavity, and the nodes of compliance are made in the form of an insert from paired channels, oriented shelves to each other with the formation of a box section and installed between two adjacent bearing elements in their box cavity, while the liner is connected to supporting elements by means of clamps, strips and nuts, and in the middle part of the insert placed persistent

psi chssshti insert placed on

flanges with the possibility of contact with the ends of the bearing elements, and

20 flanges with the possibility of contact with the ends of the bearing elements, and

thirty

wedge-shaped cuts are made on the bottoms of the coupled channels with the possibility of contact with the frame frames

25 mounted on the ends of the bearing elements, while in the bearing elements there are holes for pumping the filler into the box-shaped cavities of the metal bearing elements.

2. A method of erecting compliant metal-concrete lining, including alternately installing and connecting bearing units with maximum thrust with nodes, loading the filler carrier elements in the cavity after the design has been exhausted, in which the filling of the filler is performed under a pressure of 240 3 atm, and as a filler use fine-grained concrete solution,

1610030 CL / X / X ///

Y / y 5

Aa

FIG.

FIG. 2

B b

eleven

I / 333

FIG. five

.6 7

9.6

In In

Fie.7

Claims (2)

Claim 1. Malleable metal-concrete support, including curved hollow metal bearing elements interconnected by malleability nodes? cops and placed in their cavity aggregate, characterized in that. in order to increase the load-bearing capacity of the lining, the hollow metal supporting elements of the lining are made of paired I-beams with the formation of a box-shaped cavity, and the compliance nodes are made in the form of an insert of paired channels oriented by the shelves to each other with the formation of a box-section and installed between two adjacent bearing elements in their box cavity, while the liner is connected to the supporting elements by means of clamps, strips and nuts, and in the middle of the liner there are thrust flanges with the possibility of contact with the ends of the supporting elements, moreover, wedge-shaped slots are made on the bottoms of the paired channels with the possibility of contact with interframe couplers installed at the ends of the supporting elements, and holes are made in the supporting elements for pumping the filler into the box-shaped cavities of the metal supporting elements. 2. A method of erecting a compliant metal-concrete roof support, which includes alternately installing and connecting the yielding nodes of the load-bearing elements with maximum thrust, pumping aggregate in the cavity of the load-bearing elements after exhausting the ductile course of the structure, characterized in that the filler is injected under a pressure of 23 atm, and use as a filler fine concrete mortar, 1610030 '' // /// /// Figure 5 Figure 2