Roof lifting shed structure beside roadway chamber

Abstract

The utility model discloses a roof lifting structure beside a roadway chamber. The roof lifting structure is arranged on the top of a main roadway at the position of the chamber. Comprising longitudinal beams arranged at the side top of a roadway chamber, and the arrangement direction of the longitudinal beams is consistent with the trend of a roadway; two stand columns are arranged at the bottoms of the longitudinal beams at intervals and arranged on the two sides of the chamber correspondingly. A plurality of stand columns are arranged on the opposite sides of the chambers of the roadway at intervals. Arched beams are installed between the longitudinal beams and the stand columns on the opposite sides of the chamber. Wherein the cross section of the arched girder is U-shaped; the arched beams are installed between the longitudinal beams and the stand columns on the opposite sides of the chamber, the arched beams can deform after being pressed, the convergence amount of the top and the sides is reduced, and therefore the compression resistance effect of the shed lifting structure can be improved, and the roof fall danger is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel support, in particular to a top lifting structure beside a tunnel chamber. Background Art

[0002] Coal mining is primarily done underground, requiring the excavation of numerous tunnels. Maintaining smooth tunnels and stable surrounding rock using tunnel support is crucial for coal mine construction and production. The fundamental purpose of tunnel support is to mitigate and reduce surrounding rock movement, preventing excessive reduction in tunnel cross-section and preventing the collapse of dispersed and damaged surrounding rock.

[0003] At the intersection roof within 5m of the excavation working face, anchor net support is not possible due to the presence of the chamber, and passive support is usually required by lifting the scaffolding and inserting beams. However, due to the large span, the steel beams are prone to bending, causing the bulging support to collapse sideways, and even the risk of collapse-induced roof collapse. Utility Model Content

[0004] The purpose of the utility model is to provide a roof lifting structure next to a tunnel chamber to improve the compressive resistance of the supporting structure at the tunnel chamber.

[0005] The utility model adopts the following technical solutions: a tunnel chamber side top lifting structure is arranged on the main tunnel top at the tunnel chamber position; it includes a longitudinal beam arranged on the top of the tunnel chamber side, and the layout direction of the longitudinal beam is consistent with the direction of the tunnel;

[0006] Two columns are arranged at intervals at the bottom of the longitudinal beam, and the two columns are arranged on both sides of the chamber respectively;

[0007] Several support columns are installed at intervals on opposite sides of the tunnel chamber;

[0008] An arch beam is installed between the longitudinal beam and the supporting columns on the opposite side of the chamber;

[0009] The cross section of the arch beam is U-shaped.

[0010] Preferably, the arch beam is connected to the end of the longitudinal beam through a connecting plate;

[0011] The support column arranged on the opposite side of the chamber is connected to the other end of the longitudinal beam through the connecting plate integrally formed on the top of the support column;

[0012] The cross section of the connecting plate is U-shaped, and the U-shaped opening of the connecting plate faces the top of the main tunnel;

[0013] The U-shaped opening size of the connecting plate is larger than the U-shaped opening size of the longitudinal beam, and the arch beam is overlapped in the U-shaped opening of the connecting plate.

[0014] Preferably, the bottom end of the connecting plate is fixedly connected to the longitudinal beam, and the smaller angle formed between the connecting plate and the top surface of the longitudinal beam is 20-50°.

[0015] Preferably, edges are extended outward on both sides of the connecting plate and the arch beam.

[0016] Preferably, the connecting plate and the arch beam are fixed by a connecting assembly;

[0017] The connecting assembly includes two U-shaped clamping plates arranged opposite to each other;

[0018] Each end of the U-shaped splint is provided with an edge plate extending outward;

[0019] The edge plates of the two U-shaped clamps are connected by bolts.

[0020] Preferably, the bolt is a U-shaped bolt, which is buckled onto the outside of one of the U-shaped clamping plates.

[0021] The beneficial effect of the present invention is that the present invention installs an arch beam between the longitudinal beam and the columns on the opposite side of the cavern, and the arch beam can deform itself after being compressed, so that the convergence of the top and sides is reduced, thereby improving the pressure resistance of the lifting structure and reducing the risk of roof collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a framework of a roof-lift structure next to a tunnel chamber in an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the position relationship between the arch beam and the longitudinal beam;

[0024] Figure 3 Schematic diagram of the fixing method of the arch beam and the connecting plate in an embodiment of the present invention.

[0025] Among them: 10. Longitudinal beam; 20. Arch beam; 30. Connecting plate; 40. Column; 50. U-shaped splint; 60. U-shaped bolt. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] The utility model discloses a roof lifting structure beside a tunnel chamber, such as Figure 1 As shown, the top of the main tunnel is set at the chamber position; it includes a longitudinal beam 10 set at the top of the tunnel chamber side, and the layout direction of the longitudinal beam 10 is consistent with the direction of the tunnel; two columns 40 are arranged at intervals at the bottom of the longitudinal beam 10, and the two columns 40 are respectively arranged on both sides of the chamber; a number of support columns 70 are arranged at intervals on the opposite side of the tunnel chamber; an arch beam 20 is installed between the longitudinal beam 10 and the support columns 70 on the opposite side of the chamber; wherein, the cross section of the arch beam 20 is U-shaped.

[0028] The utility model installs an arch beam 20 between the longitudinal beam 10 and the column on the opposite side of the cavern. When the arch beam 20 is compressed, it can deform itself, reducing the convergence of the top and sides, thereby improving the pressure resistance of the shed structure and reducing the risk of roof collapse.

[0029] In one embodiment, Figure 2 As shown, the arch beam 20 is connected to the end of the longitudinal beam 10 through a connecting plate 30; the column 40 arranged on the opposite side of the chamber is connected to the other end of the longitudinal beam 10 through the connecting plate 30; the cross-section of the connecting plate 30 is U-shaped, and the U-shaped opening of the connecting plate 30 faces the top of the main tunnel; the size of the U-shaped opening of the connecting plate 30 is larger than the size of the U-shaped opening of the longitudinal beam 10, and the arch beam 20 is overlapped in the U-shaped opening of the connecting plate 30.

[0030] The aforementioned U-shaped opening is a general term; in practice, it can also be V-shaped, W-shaped, or other shapes. This type of cross-sectional interface allows the arch beam 20 to deform under pressure, thereby reducing the pressure on other associated components. Furthermore, through the overlapping structure, when the arch beam 20 deforms under pressure, it moves within the connecting plate 30, releasing the pressure through deformation and thus reducing the stress on the longitudinal beam 10.

[0031] More specifically, the bottom end of the connecting plate 30 is fixedly connected to the longitudinal beam 10, which is in turn fixedly connected to the support column 70 on the opposite side of the chamber. The minimum angle formed between the connecting plate 30 and the top surface of the longitudinal beam 10 is 20 to 50 degrees. Preferably, the angle between the two components is 30 degrees. Furthermore, the connecting plate 30 and the longitudinal beam are welded, using surface-contact welding. From a mechanical perspective, the horizontal component of the top pressure is small, making it less likely to cause a collapse.

[0032] Both sides of the connecting plate 30 and the arch beam 20 extend outwardly with edges. The edge design can provide a limiting effect when the arch beam 20 moves in the connecting plate 30.

[0033] In order to increase safety, the connecting plate 30 and the arch beam 20 are fixed by a connecting assembly. Figure 3 As shown, the connecting assembly includes two opposing U-shaped plates 50; each U-shaped plate 50 has an outwardly extending edge plate at its end; the edges of the two U-shaped plates 50 are connected by bolts. The connecting assembly integrates the arch beam 20 and the connecting plate 30, preventing lateral displacement of the arch beam 20 and increasing stability.

[0034] As a specific implementation form, the bolt is a U-shaped bolt 60, which is buckled on the outside of one of the U-shaped clamping plates 50. By using the U-shaped bolt 60, the connection of the U-shaped clamping plates 50 can be made more compact.

[0035] The U-shaped beam support structure of this utility model has excellent compressive resistance and can be used in locations such as the tunneling bottom bend to avoid the chamber and the winch chamber. It has good performance and does not deform in the later stage of use, adding a safety line for roof management. Moreover, after using this utility model, the need for secondary reinforcement support is eliminated, avoiding secondary renovation. This not only saves manpower but also greatly reduces material costs. Each chamber support saves at least 8,000 yuan, and each drift saves at least 40,000 yuan. The safety benefits are immeasurable.

Claims

1. A roof lifting structure beside a tunnel chamber, characterized in that: The main tunnel is arranged at the top of the tunnel chamber; it includes a longitudinal beam (10) arranged at the top of the tunnel chamber side, and the layout direction of the longitudinal beam (10) is consistent with the direction of the tunnel; Two columns (40) are arranged at intervals at the bottom of the longitudinal beam (10), and the two columns (40) are respectively arranged on both sides of the chamber; A plurality of support columns (70) are arranged at intervals on opposite sides of the chamber of the tunnel; An arch beam (20) is installed between the longitudinal beam (10) and the support column (70) on the opposite side of the chamber; Wherein, the cross section of the arch beam (20) is U-shaped.

2. A roof-lift structure beside a tunnel chamber as claimed in claim 1, characterized in that: The arch beam (20) is connected to the end of the longitudinal beam (10) through a connecting plate (30); The support column (70) provided on the opposite side of the chamber is connected to the other end of the longitudinal beam (10) via a connecting plate (30) integrally formed on the top of the support column (70); The cross section of the connecting plate (30) is U-shaped, and the U-shaped opening of the connecting plate (30) faces the top of the main lane; The U-shaped opening size of the connecting plate (30) is larger than the U-shaped opening size of the longitudinal beam (10), and the arch beam (20) is overlapped in the U-shaped opening of the connecting plate (30).

3. A roof-lift structure beside a tunnel chamber as claimed in claim 2, characterized in that: The bottom end of the connecting plate (30) is fixedly connected to the longitudinal beam (10), and the smaller angle formed between the connecting plate (30) and the top surface of the longitudinal beam (10) is 20 to 50 degrees.

4. A roof-lift structure beside a tunnel chamber as claimed in claim 2 or 3, characterized in that: Both sides of the connecting plate (30) and the arch beam (20) have edges extending outwards.

5. The roof-lift structure beside the tunnel chamber according to claim 4, characterized in that: The connecting plate (30) and the arch beam (20) are fixed via a connecting assembly; The connecting assembly comprises two U-shaped clamping plates (50) arranged opposite to each other; Each end of the U-shaped clamping plate (50) is provided with an edge plate extending outward; The edges of the two U-shaped clamping plates (50) are connected by bolts.

6. A roof-lift structure beside a tunnel chamber as claimed in claim 5, characterized in that: The bolt is a U-shaped bolt (60), and the U-shaped bolt (60) is buckled on the outside of one of the U-shaped clamping plates (50).

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