High-strength combined supporting structure for soft rock deformation tunnel

Abstract

The utility model relates to the technical field of tunnel engineering, in particular to a high-strength combined supporting structure for a soft rock deformation tunnel. Comprising a main supporting plate and a secondary supporting plate, and return assemblies are connected in concave openings of the main supporting plate and the secondary supporting plate and are supported between the inner walls of side plates of the main supporting plate and the secondary supporting plate; the left side and the right side of the main supporting plate and the left side and the right side of the secondary supporting plate are each provided with a vertical supporting assembly, each vertical supporting assembly comprises a vertical supporting column and a fixed supporting plate, the top end and the bottom end of each vertical supporting column are each connected with one fixed supporting plate, and a spring sleeve is connected between the fixed supporting plate at the top and a side plate of the secondary supporting plate. A spring sleeve is connected between the fixed supporting plate at the bottom and the outer wall of the side plate of the main supporting plate; according to the high-strength combined supporting structure for the soft rock deformation tunnel, vertical elastic deformation can be generated when vertical loads are borne, the influence of soft rock deformation is effectively relieved, safety and stability of the tunnel structure are protected, and unstable factors in the construction process are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel engineering technical field especially relates to a high strength combined support structure for soft rock deformation tunnel. BACKGROUND

[0002] The soft rock deformation tunnel is a kind of tunnel engineering type, and its feature is that the rock penetrated by the tunnel belongs to soft rock, and the soft rock usually refers to the rock with low compressive strength and easy to be subjected to plastic deformation or rupture under external force, such as shale, mudstone, sandstone and the like, and the rock is easy to deform under geological action and easy to extrude the tunnel, increasing the deformation and stability risk of the tunnel.

[0003] The existing high strength combined support structure for soft rock deformation tunnel is mostly supported by rigid support structure in the process of use, but after the soft rock deformation extrusion, the rigid support structure is prone to connection misplacement, and the misplacement can reduce the support effect on the tunnel during secondary extrusion, thereby easily affecting the stability of the tunnel. UTILITY MODEL CONTENT

[0004] The utility model discloses a rigid support structure in the prior art is prone to misplacement.

[0005] The utility model provides a high strength combined support structure for soft rock deformation tunnel, including main support board and secondary support board, and main support board and secondary support board are the elastic horn-shaped concave plate, main support board and secondary support board are set up back to back one above the other, and the concave mouth of main support board and secondary support board is connected with reset component, and reset component is supported between the inner wall of the side plate of main support board and secondary support board.

[0006] One group of vertical support component is arranged on the left side and the right side of main support board and secondary support board respectively, and vertical support component includes vertical support column and fixed support plate, and vertical support column can be telescopic, and one fixed support plate is connected with the top end and bottom end of vertical support column respectively, spring sleeve is connected between the fixed support plate of top and the side plate of secondary support board, and spring sleeve is connected between the fixed support plate of bottom and the outer wall of the side plate of main support board.

[0007] Further, the inner wall of the side plate of main support board and secondary support board is fixed with connecting plate and rubber plate, connecting plate is connected with the side plate through bolt, connecting plate and rubber plate are connected through adhesive layer, and adhesive layer is located between connecting plate and side plate, and reset component is connected with connecting plate.

[0008] Further, the reset assembly comprises a connecting piece, a fixing rod, a reset sleeve and a reset pull rod, the connecting piece is fixedly connected with the connecting plate, the first ends of the fixing rod and the reset pull rod are hinged with the connecting piece, the second end of the fixing rod is fixedly connected with the reset sleeve, and the second end of the reset pull rod is movably sleeved with the reset sleeve.

[0009] Further, the vertical support post comprises a fixing post and a protection sleeve, the fixing post is fixedly connected with the fixing support plate, the end of the fixing post is connected with a spring, and a limiting ring is fixedly connected on the fixing post, the protection sleeve is movably sleeved with the upper and lower fixing posts, and the limiting ring is used for stopping the protection sleeve.

[0010] Further, the end of the reset pull rod extending into the reset sleeve is fixedly connected with a guide plate, the guide plate is slidably connected with the inner wall of the reset sleeve, a limiting spring is connected between the guide plate and the reset sleeve, a reset spring is sleeved on the reset pull rod, one end of the reset spring is connected with the guide plate, and the other end of the reset spring is connected with the reset sleeve.

[0011] Further, the horizontal plates of the main support plate and the secondary support plate are both provided with limiting grooves, connecting blocks are movably clamped in the limiting grooves, and the main support plate and the secondary support plate are movably connected through the connecting blocks.

[0012] Compared with the prior art, the advantages of the utility model lie in:

[0013] The high-strength combined support structure for the soft rock deformation tunnel can produce vertical elastic deformation when bearing vertical load, effectively reduces the influence of soft rock deformation, protects the safety and stability of the tunnel structure, and reduces the unstable factors in the construction process.

[0014] Through the reset assembly and the connecting block, when the main support plate and the secondary support plate are subjected to vertical load, the main support plate and the secondary support plate are deformed, the reset assembly is stretched, the deformation of the main support plate and the secondary support plate is reduced, and the main support plate and the secondary support plate are quickly restored, meanwhile, the connecting block is used for maintaining the connection between the main support plate and the secondary support plate, so that the main support plate and the secondary support plate are prevented from being completely staggered, and the equipment is prevented from being unable to normally support.

[0015] The main support plate, the secondary support plate and the vertical support assembly are connected through the spring sleeve, and the horizontal deformation between the parts is slowed down. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of a high-strength combined support structure for a soft rock deformation tunnel;

[0017] Figure 2 It is a schematic view of a limiting groove;

[0018] Figure 3 It is a schematic view of the connection between the connecting plate and the reset assembly;

[0019] Figure 4 is a schematic view of the vertical support column.

[0020] Figure 5 is an exploded view of the reset assembly.

[0021] In the figure: 1-main support plate; 2-secondary support plate; 3-connection plate; 4-reset assembly; 41-connection piece; 42-fixed rod; 43-reset sleeve; 44-reset pull rod; 45-reset spring; 46-limiting spring; 5-spring sleeve; 6-fixed support plate; 7-fixed support column; 8-limiting groove; 9-connection block; 10-rubber plate; 11-adhesion layer; 12-limiting ring; 13-protection sleeve; 14-spring. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0023] As shown in Figure 1 : a high-strength combined support structure for soft rock deformation tunnel, comprising a main support plate 1 and a secondary support plate 2, the main support plate 1 and the secondary support plate 2 are elastic horn-shaped concave plates; the main support plate 1 and the secondary support plate 2 are arranged back to back one above the other; the concave mouth of the main support plate 1 and the secondary support plate 2 is connected with a reset assembly 4, and the reset assembly 4 is supported between the inner walls of the side plates of the main support plate 1 and the secondary support plate 2.

[0024] Each of the left and right sides of the main support plate 1 and the secondary support plate 2 is arranged with a group of vertical support assemblies, the vertical support assembly comprises a vertical support column and a fixed support plate 6, the vertical support column is telescopic, the top end and the bottom end of the vertical support column are connected with one fixed support plate 6 respectively, the fixed support plate 6 at the top is connected with a spring sleeve 5 between the side plate of the secondary support plate 2, and the fixed support plate 6 at the bottom is connected with a spring sleeve 5 between the outer wall of the side plate of the main support plate 1; the spring sleeves 5 on the same group of vertical support assemblies cross X to support the fixed support plate 6 at the top at the same time, which can improve the transverse torsional strength of the vertical support assembly.

[0025] As shown in Figure 1 , Figure 3 : the inner wall of the side plate of the main support plate 1 and the secondary support plate 2 is fixed with a connection plate 3 and a rubber plate 10, the connection plate 3 is connected with the side plate through bolts, the connection plate 3 is connected with the rubber plate 10 through an adhesion layer 11, and the adhesion layer 11 is located between the connection plate 3 and the side plate; the reset assembly 4 is connected with the connection plate 3.

[0026] AsFigure 3 、 Figure 5 As shown: the return assembly 4 includes a connecting member 41, a fixed rod 42, a return sleeve 43 and a return pull rod 44. The connecting member 41 is fixedly connected to the connecting plate 3. The first ends of the fixed rod 42 and the return pull rod 44 are hinged to the connecting member 41. The second end of the fixed rod 42 is fixedly connected to the return sleeve 43. The second end of the return pull rod 44 is movably connected to the return sleeve 43.

[0027] A guide plate is fixed to one end of the return rod 44 that extends into the return sleeve 43. The guide plate is in sliding contact with the inner wall of the return sleeve 43. The retaining rings at the guide plate and the tube mouth of the return sleeve 43 slidably support the return rod 44. A limit spring 46 is connected between the guide plate and the return sleeve 43. A return spring 45 is sleeved on the return rod 44. One end of the return spring 45 is connected to the guide plate and the other end is connected to the return sleeve 43. When the return rod 44 slides in the return sleeve 43, the limit spring 46 and the return spring 45 extend and contract respectively. After the external force at both ends of the return assembly 4 is unloaded, the return assembly 4 can automatically reset. When the primary support plate 1 and the secondary support plate 2 are under pressure, the return assembly 4 resists deformation. After the pressure on the primary support plate 1 and the secondary support plate 2 is unloaded, the return assembly 4 assists the primary support plate 1 and the secondary support plate 2 in restoring.

[0028] like Figure 4 As shown: the vertical support pillar includes a fixed pillar 7 and a protective sleeve 13. The fixed pillar 7 is fixedly connected to the fixed support plate 6. The end of the fixed pillar 7 is connected to a spring 14. A limiting ring 12 is fixedly connected to the fixed pillar 7. The protective sleeve 13 is movably connected to the upper and lower fixed pillars 7. The limiting ring 12 is used to stop the protective sleeve 13. The limiting ring 12 and the protective sleeve 13 cooperate to limit the compression stroke of the vertical support pillar.

[0029] like Figure 2 As shown, the transverse plates of the primary support plate 1 and the secondary support plate 2 are both provided with limit slots 8, and the limit slots 8 are movably connected with connecting blocks 9. The primary support plate 1 and the secondary support plate 2 are movably connected via the connecting blocks 9. The connecting blocks 9 are provided to improve the stability of the connection between the primary support plate 1 and the secondary support plate 2, and to prevent the primary support plate 1 and the secondary support plate 2 from being completely misaligned.

[0030] The utility model discloses a main support board 1 and secondary support board 2 are extruded to the outside, and the main support board 1 and secondary support board 2 are opened to the outside, and the reset component 4 is pulled, and the reset component 4 is pulled to drive reset pull rod 44 extrusion reset spring 45, and simultaneously, the vertical support column is also extruded, and the main support board 1 and secondary support board 2 can be dislocated between possibly, guarantee that the main support board 1 and secondary support board 2 will not be thoroughly dislocated between through connecting block 9, and then reset spring 45 in the reset component 4 inside is used to assist the main support board 1 and secondary support board 2 reset, is used to improve the stability of support.

[0031] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high strength composite support structure for a soft rock deformation tunnel, characterised in that: The utility model relates to a kind of supporting plate, including main supporting plate (1) and secondary supporting plate (2), main supporting plate (1) and secondary supporting plate (2) are elastic horn-shaped concave plate;Main supporting plate (1) and secondary supporting plate (2) are arranged one above the other back to back;The concave mouth of main supporting plate (1) and secondary supporting plate (2) is connected with reset component (4), reset component (4) is supported between the inner wall of the side plate of main supporting plate (1) and secondary supporting plate (2); Main supporting plate (1) and secondary supporting plate (2) are arranged with a group of vertical support components on the left and right sides, vertical support component includes vertical support column and fixed support plate (6), vertical support column can be telescopic, and the top and bottom of vertical support column are connected with a fixed support plate (6), and the fixed support plate (6) of top is connected with spring sleeve (5) between the side plate of secondary supporting plate (2), and the fixed support plate (6) of bottom is connected with spring sleeve (5) between the outer wall of the side plate of main supporting plate (1).

2. A high strength composite support structure for a soft ground deformation tunnel according to claim 1, wherein: The inner wall of the side plate of main supporting plate (1) and secondary supporting plate (2) is fixed with connecting plate (3) and rubber plate (10), connecting plate (3) is connected with side plate by bolt, connecting plate (3) is connected with rubber plate (10) by adhesive layer (11), and adhesive layer (11) is located between connecting plate (3) and side plate;Reset component (4) is connected with connecting plate (3).

3. A high strength composite support structure for a soft ground deformation tunnel according to claim 2, wherein: The reset component (4) includes a connecting piece (41), a fixed rod (42), a reset sleeve (43), and a reset pull rod (44). The connecting piece (41) is fixedly connected with the connecting plate (3). The first ends of the fixed rod (42) and the reset pull rod (44) are hingedly connected with the connecting piece (41). The second end of the fixed rod (42) is fixedly connected with the reset sleeve (43). The second end of the reset pull rod (44) is movably sleeved with the reset sleeve (43).

4. A high strength composite support structure for a soft ground deformation tunnel according to claim 1, wherein: The vertical support column includes a fixed column (7) and a protective sleeve (13). The fixed column (7) is fixedly connected with the fixed support plate (6). The end of the fixed column (7) is connected with a spring (14). The fixed column (7) is fixedly connected with a limiting ring (12). The protective sleeve (13) is movably sleeved with the upper and lower fixed columns (7). The limiting ring (12) is used to stop the protective sleeve (13).

5. A high strength composite support structure for a soft ground deformation tunnel according to claim 3, wherein: The end of the reset pull rod (44) extending into the reset sleeve (43) is fixedly connected with a guide plate. The guide plate is slidably connected with the inner wall of the reset sleeve (43). A limiting spring (46) is connected between the guide plate and the reset sleeve (43). A reset spring (45) is sleeved on the reset pull rod (44). One end of the reset spring (45) is connected with the guide plate, and the other end is connected with the reset sleeve (43).

6. A high strength composite support structure for a soft rock deformation tunnel according to any one of claims 1 to 5, characterized in that: The horizontal plate of the main supporting plate (1) and the secondary supporting plate (2) is provided with a limiting groove (8). The connecting block (9) is movably connected in the limiting groove (8). The main supporting plate (1) and the secondary supporting plate (2) are movably connected through the connecting block (9).

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