Temporary supporting structure for underground excavation tunnel

Abstract

The utility model provides a temporary supporting structure for a subsurface tunnel, which belongs to the field of construction supporting equipment and comprises a supporting frame, an inner supporting component and a supporting back plate. The supporting frame is composed of four supporting columns, and mounting plates are mounted at the bottom ends of the four supporting columns; the supporting frame is composed of the four supporting columns, the bottom ends of the supporting columns are installed and fixed through the installation plate, the connecting bases are installed on the inner sides of the tops of the supporting columns, every two adjacent supporting columns are fixedly connected through the cross beams arranged between the connecting bases, and therefore the supporting frame is composed of the supporting frame, and the mode that a simple supporting column is used for supporting is replaced. The longitudinal beams are arranged on the inner side of the cross beam, the connecting pieces are connected to the inner sides of the longitudinal beams and the cross beam, the inner supporting beams are arranged between the adjacent longitudinal beams, and the mounting holes are formed in the surfaces of the inner supporting beams and the connecting pieces, so that the inner supporting beams are fixedly connected with the longitudinal beams, the structural strength of the supporting frame is enhanced, meanwhile, occupied space is reduced, and underground excavation construction is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of construction support equipment, in particular to a temporary support structure for a dark-dug tunnel. Background Art

[0002] With the continuous advancement of scientific and technological modernization and industrial modernization, tunnel construction plays a vital role in the construction of three-dimensional transportation. During tunnel excavation, necessary support for dangerous rock masses is often required to prevent them from collapsing, thereby improving construction safety efficiency and reducing casualties. During tunnel excavation, due to uncertain hydrogeological conditions and a complex construction environment, temporary support for the tunnel is required to ensure subsequent construction safety. Traditional temporary support structures use simple support columns and roof plates to temporarily support the tunnel. However, due to the dense distribution of support columns, they occupy a large amount of space. Furthermore, the lack of reinforcement between the support columns results in low structural strength, making them unable to meet the needs of continuous construction. Utility Model Content

[0003] The purpose of the present utility model is to provide a temporary support structure for a dark excavated tunnel, so as to solve the problem that the traditional temporary support structure proposed in the above-mentioned background technology adopts simple support columns and a top plate to temporarily support the tunnel. Since the support columns are densely distributed, they occupy more space. At the same time, there is no reinforcement structure between the support columns, which makes the support structure strength low and cannot meet the needs of continuous construction.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temporary support structure for a dark excavated tunnel, comprising a support frame, an inner support assembly and a support back plate;

[0005] The support frame is composed of four support columns, the bottom ends of the four support columns are installed with mounting plates, the top inner sides of the support columns are fixedly installed with connecting seats, and a crossbeam is connected between two adjacent connecting seats, and the four support columns are connected to each other through the crossbeam;

[0006] The inner support assembly includes a plurality of longitudinal beams arranged on the inner sides of two corresponding transverse beams, connecting pieces are fixedly connected to both sides of the longitudinal beams and the inner sides of the transverse beams, and a plurality of inner support beams are arranged between adjacent longitudinal beams. The surfaces of the connecting pieces and the inner support beams are provided with mounting holes, and the inner support beams are installed between adjacent longitudinal beams through the mounting holes.

[0007] The top end of the support column is connected to the installation column, the top end of the installation column is provided with an installation groove, an I-beam is placed inside the installation groove, and the support back plate is installed on the top of the I-beam.

[0008] As a preferred solution of the present invention: side panels are installed on both sides of the surface of the installation column, the surfaces of the side panels are provided with through holes, and screws are inserted and connected inside the through holes.

[0009] As a preferred solution of the present invention: a fixing clamp is installed on the surface of the screw rod, the top of the fixing clamp is fixed to one side of the I-beam, and locking wheels are threadedly connected at both ends of the screw rod.

[0010] As a preferred solution of the present invention: a connecting plate is installed at the middle of the bottom end of the beam, a mounting piece is installed at the bottom of the support column, and a reinforcing rib is provided between the connecting plate and the mounting piece.

[0011] As a preferred solution of the present invention: a sliding groove is provided on the surface of the fixing clamp, and the screw rod is inserted into the sliding groove.

[0012] As a preferred solution of the present invention: one end of the support column and the installation column are both installed with a fixing seat, and the fixing seats are fixedly connected by bolts.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The support frame is composed of four support columns, the bottom ends of the support columns are fixed by mounting plates, and connecting seats are installed on the inner sides of the tops of the support columns. Two adjacent support columns are fixedly connected by a crossbeam provided between the connecting seats, so that the support frame forms a support frame, which replaces the simple support column support method. A plurality of longitudinal beams are provided on the inner sides of the crossbeams, and connecting plates are connected to the longitudinal beams and the inner sides of the crossbeams. An inner support beam is provided between adjacent longitudinal beams, and mounting holes are provided on the surfaces of the inner support beams and the connecting plates, so that the inner support beams are fixedly connected to the longitudinal beams, thereby strengthening the structural strength of the support frame, reducing space occupation, and facilitating dark excavation construction;

[0015] (2) A mounting groove is provided at the top of the mounting column, an I-beam is placed inside the mounting groove, and the support back plate is installed on the top of the I-beam, so that the tunnel excavation is temporarily supported by the support back plate, providing force support for the top of the excavation surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the inner support assembly of the present utility model;

[0018] Figure 3 This is a schematic diagram of the fixing clip installation structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the reinforcing rib installation structure of the present invention.

[0020] In the figure: 1. Support frame; 101. Support column; 102. Mounting plate; 103. Connecting seat; 104. Crossbeam; 2. Internal support assembly; 201. Longitudinal beam; 202. Connecting plate; 203. Internal support beam; 204. Mounting hole; 3. Support back plate; 4. Mounting column; 5. Mounting groove; 6. I-beam; 7. Side plate; 8. Through hole; 9. Screw; 10. Fixing clamp; 11. Locking wheel; 12. Connecting plate; 13. Mounting plate; 14. Reinforcement rib; 15. Sliding groove; 16. Fixing seat. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 4 , a temporary support structure for a dark tunnel, comprising: a support frame 1, an inner support assembly 2 and a support back plate 3;

[0023] See also Figure 1 , Figure 2 , Figure 4 The support frame 1 is composed of four support columns 101, and the bottom ends of the four support columns 101 are installed with mounting plates 102. A connecting seat 103 is fixedly installed on the inner side of the top of the support column 101. A crossbeam 104 is connected between two adjacent connecting seats 103. The four support columns 101 are connected to each other through the crossbeam 104. The internal support assembly 2 includes a plurality of longitudinal beams 201 arranged on the inner sides of two corresponding crossbeams 104. Connecting plates 202 are fixedly connected on both sides of the longitudinal beams 201 and the inner sides of the crossbeams 104. Several internal support beams 203 are provided between adjacent longitudinal beams 201. Mounting holes 204 are opened on the surfaces of the connecting plates 202 and the internal support beams 203. The internal support beams 203 are installed between adjacent longitudinal beams 201 through the mounting holes 204.

[0024] During specific use: the support frame 1 is composed of four support columns 101, the bottom ends of the support columns 101 are fixed by mounting plates 102, and connecting seats 103 are installed on the inner sides of the tops of the support columns 101. The two adjacent support columns 101 are fixedly connected by the crossbeams 104 provided between the connecting seats 103, so that the support frame 1 forms a support frame, replacing the simple support column 101 support method, a plurality of longitudinal beams 201 are provided on the inner sides of the crossbeams 104, and the longitudinal beams 201 and the inner sides of the crossbeams 104 are connected with connecting plates 202, and inner support beams 203 are provided between adjacent longitudinal beams 201, and mounting holes 204 are provided on the surfaces of the inner support beams 203 and the connecting plates 202, so that the inner support beams 203 are fixedly connected to the longitudinal beams 201, so that the structural strength of the support frame 1 is enhanced, while reducing the space occupied and facilitating the underground excavation construction.

[0025] See also Figure 1 , Figure 3 The top of the support column 101 is connected to the mounting column, the top of the mounting column 4 is provided with a mounting groove 5, an I-beam 6 is placed inside the mounting groove 5, and the supporting backboard 3 is installed on the top of the I-beam 6.

[0026] During specific use: an installation groove 5 is opened at the top of the installation column 4, an I-beam 6 is placed inside the installation groove 5, and the support backboard 3 is installed on the top of the I-beam 6, so that the tunnel excavation is temporarily supported by the support backboard 3, providing force support for the top of the excavation surface.

[0027] See also Figure 3 Side panels 7 are installed on both sides of the surface of the mounting column 4, and a through-hole 8 is opened on the surface of the side panel 7. A screw 9 is inserted and connected inside the through-hole 8. A fixing clamp 10 is installed on the surface of the screw 9. The top of the fixing clamp 10 is fixed to one side of the I-beam 6, and locking wheels 11 are threadedly connected to both ends of the screw 9.

[0028] During specific use: side panels 7 are installed on both sides of the surface of the mounting column 4, and a through-hole 8 is opened on the surface of the side panel 7. The screw 9 is inserted into the through-hole 8. A fixing clamp 10 is slidingly provided on the surface of the screw 9. When the locking wheel 11 on the surface of the screw 9 is rotated, the locking wheel 11 moves on the surface of the screw 9 and pushes the fixing clamp 10 closer to the I-beam 6. The I-beam 6 is fixed to the top of the mounting column 4 through the fixing clamp 10, which facilitates the installation and subsequent disassembly of the support backboard 3.

[0029] See also Figure 1 , Figure 4 A connecting plate 12 is installed at the middle of the bottom end of the crossbeam 104 , a mounting piece 13 is installed at the bottom of the support column 101 , and a reinforcing rib 14 is provided between the connecting plate 12 and the mounting piece 13 .

[0030] During specific use: a connecting plate 12 is installed in the middle of the bottom end of the beam 104, and a mounting piece 13 is installed at the bottom of the support column 101. The connecting plate 12 and the mounting piece 13 are connected by a reinforcing rib 14, so that the reinforcing rib 14 is installed between the beam 104 and the support column 101 to improve the stability of the structural connection.

[0031] See also Figure 3 A sliding groove 15 is provided on the surface of the fixing clamp 10 , and the screw rod 9 is inserted into the sliding groove 15 .

[0032] During specific use: a sliding groove 15 is opened on the surface of the fixing clamp 10, and the screw 9 is inserted into the sliding groove 15, so that the fixing clamp 10 can be adjusted in height on the surface of the screw 9 to meet the installation space between the structural parts.

[0033] See also Figure 3 One end of the support column 101 and the installation column 4 are both installed with a fixing seat 16, and the fixing seats 16 are fixedly connected by bolts.

[0034] During specific use: the support column 101 and one end of the installation column 4 are installed with a fixing seat 16, and the fixing seats 16 are connected together by bolts, so that the support column 101 and the installation column 4 are easy to install and disassemble.

[0035] The support frame 1 is composed of four support columns 101. The bottom ends of the support columns 101 are fixed by mounting plates 102. A connecting seat 103 is installed on the inner side of the top of the support column 101. Two adjacent support columns 101 are fixedly connected by a crossbeam 104 provided between the connecting seats 103, so that the support frame 1 forms a support frame, which replaces the simple support column 101 support method. A plurality of longitudinal beams 201 are provided on the inner side of the crossbeam 104. The longitudinal beams 201 and the inner sides of the crossbeams 104 are connected with connecting plates 202. An inner support beam 203 is provided between adjacent longitudinal beams 201. The surfaces of the inner support beam 203 and the connecting plate 202 are provided with mounting holes 204, so that the inner support beam 203 is fixedly connected to the longitudinal beam 201, so that the structural strength of the support frame 1 is enhanced, while reducing the space occupied and facilitating the underground excavation construction.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A temporary support structure for a dark tunnel, characterized in that: include: A support frame (1), the support frame (1) is composed of four support columns (101), the bottom ends of the four support columns (101) are all installed with mounting plates (102), the top inner sides of the support columns (101) are fixedly installed with connecting seats (103), a crossbeam (104) is connected between two adjacent connecting seats (103), and the four support columns (101) are connected to each other through the crossbeam (104); An inner support assembly (2), the inner support assembly (2) comprising a plurality of longitudinal beams (201) arranged inside two corresponding transverse beams (104), connecting pieces (202) being fixedly connected to both sides of the longitudinal beams (201) and the inner sides of the transverse beams (104), a plurality of inner support beams (203) being arranged between adjacent longitudinal beams (201), mounting holes (204) being provided on surfaces of the connecting pieces (202) and the inner support beams (203), and the inner support beams (203) being mounted between adjacent longitudinal beams (201) through the mounting holes (204); A supporting back plate (3) is provided, wherein the top end of the supporting column (101) is connected to a mounting column (4), a mounting groove (5) is provided at the top end of the mounting column (4), an I-beam (6) is placed inside the mounting groove (5), and the supporting back plate (3) is mounted on the top of the I-beam (6).

2. A temporary support structure for a dark tunnel according to claim 1, characterized in that: Side plates (7) are installed on both sides of the surface of the installation column (4), and the surface of the side plates (7) is provided with through holes (8), and screw rods (9) are inserted and connected inside the through holes (8).

3. A temporary support structure for a dark tunnel according to claim 2, characterized in that: A fixing clamp (10) is installed on the surface of the screw rod (9), and the top of the fixing clamp (10) is fixed to one side of the I-beam (6). The two ends of the screw rod (9) are threadedly connected to locking wheels (11).

4. The temporary support structure for a dark tunnel according to claim 1, characterized in that: A connecting plate (12) is installed at the middle of the bottom end of the crossbeam (104), a mounting plate (13) is installed at the bottom of the support column (101), and a reinforcing rib (14) is provided between the connecting plate (12) and the mounting plate (13).

5. The temporary support structure for a dark tunnel according to claim 3, characterized in that: A sliding groove (15) is provided on the surface of the fixing clamp (10), and the screw rod (9) is inserted into the sliding groove (15).

6. The temporary support structure for a dark tunnel according to claim 1, characterized in that: One end of each of the support column (101) and the installation column (4) is provided with a fixing seat (16), and the fixing seats (16) are fixedly connected by bolts.

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