RU1809080C - Device for underground structures pressing-in - Google Patents

Abstract

Usage: for the construction of vertical workings in urban and industrial underground construction. SUMMARY OF THE INVENTION: the device includes piles, a power mechanism and a cutting knife. The piles are located along the inner contour of the underground structure, have in the lower part of the window and each is equipped with a spacer mechanism located inside the pile and consisting of a power element, a wedge and segments connected to it, a hinge mounted on the inner walls of the pile with the possibility of extension through the windows. 1 s.p., f-ly, 5 ill.

Description

The invention relates to underground construction and can be used for the construction of vertical workings in urban and industrial underground construction.

The purpose of the invention is to increase the reliability of the device due to the possibility of phased implementation of piles.

The use of piles with a spacer mechanism providing sufficient load-bearing capacity instead of piles having a vertical slot and drilled to the full design depth, when using which an accumulation of deviations with an increase in the depth of immersion is observed, allows replacing the process of single introduction of piles to the full depth by the process of phased introduction of piles providing the ability to correct deviations in subsequent stages of implementation. This in turn eliminates the possibility of jamming of the device. In addition, equipping the piles with a spacer mechanism reduces their

quantity. All of the above allows to increase the reliability of the device in comparison with the prototype.

Figure 1 shows the device in plan, General view; in FIG. 2 - section aa in figure 1; in FIG. 3 - section bB in figure 2, with folded segments; figure 4 is the same with extended segments; figure 5 - section bb in Fig.Z.

The device consists of piles 1, which are an I-beam, sheathed by plates 2, in the lower part of which there are windows 3. Inside the piles in their lower part there is a spacer mechanism, consisting of an element in the form of two hydraulic jacks 4, a wedge 5, segments b and straps 7. The hydraulic jacks 4 are fixed to the pile, and their rods are connected to the wedge 5 installed in the slot of the wall of the I-beam in such a way that its edges are guides during its reciprocating movement. Segments 6 are fixed to the flanges of the I-beam on axles 8 and can be extended through windows 3.

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The wedge 5 and segments 6 are kinematically connected to each other by strips 7. In the upper part of the pile from its outer side, a power mechanism is fixed, which is hydraulic jacks 9, whose bodies are rigidly connected to the piles, and the rods to the consoles 10 mounted on cutting knife 11.

The device operates as follows.

The required number of piles 1 is installed along the inner contour of the mine under construction and immersed in the soil to the required depth using any mechanism, for example, vibration absorbers (not shown). Then, under the action of hydraulic jacks 4, the wedge 5 is moved to its lowest position. In this case, the segments 6, turning around the axes 8 through the windows 4 in the plate 2, are embedded in the ground, providing the calculated bearing capacity of the piles. A cutting knife 11 is mounted on the surface and the first lining ring is connected to it, and the hydraulic jack rods 9 of the power mechanism - with consoles 10. The hydraulic jacks 9 are turned on and the cutting knife 11 and the first support ring are crushed with the simultaneous development of the bottom and delivery of soil to the workings.

After that, the hydraulic jacks 4 are turned on and the wedge 5, moving upward, by means of the straps 7 returns segments 6 to their original position. Then, hydraulic jacks 9 are turned on for a return stroke and piles 1 are introduced by the value of the next

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walkers, and with hydraulic jacks 4 segments 6 are pushed into the ground.

The next ring of temporary or permanent support is mounted on the surface and, including hydraulic jacks i9 of the power mechanism, crush the underground structure.

After completing the work in the indicated sequence, the production passes to the design depth. After this, the piles are removed for reuse.

Claims (2)

1. A device for crushing underground structures, including hollow piles, a cutting knife of an underground structure and power mechanisms associated with piles and a cutting knife, which are included in order to increase reliability by the possibility of phased introduction of piles, the latter are made with windows in the lower part, are located along the inner contour of the underground structure and each is equipped with a spacer mechanism located inside the piles and made of a power element and a wedge connected to it and from segments pivotally mounted on Cored oil pile walls extendable through the window lift mechanism and fixed to the pile with its outer side. 2. The device according to claim 1, with the exception that the windows, segments and wedges are located in several rows along the height of the pile. Aa Fig.Z FIG. 4