Quick-assembly and quick-disassembly type temporary support device for tunnel

Abstract

The application discloses a fast-assembling and fast-disassembling type temporary rod piece supporting device for a tunnel, which comprises a spliced expanded steel beam foundation, and a plurality of supporting unit bodies which are detachably connected to the spliced expanded steel beam foundation and can adjust supporting working modes; the expanded steel beam foundation is arranged on the ground of the tunnel and serves as a stress foundation of the whole device, and the supporting unit bodies can be flexibly arranged on the expanded steel beam foundation according to actual needs, and can be in a vertical supporting working mode, a horizontal supporting working mode or a slant supporting working mode with adjustable supporting angles according to the surface to be supported, so that the tunnel structure is quickly supported and reinforced in multiple modes, and the support is flexible and efficient. The application has the advantages of simple structure, low cost, flexible and efficient installation, fast assembly and disassembly, efficient and orderly working mode transformation process, good supporting and reinforcing effect, high practicability and high safety.

Description

TECHNICAL FIELD

[0001] The present application relates to a fast assembly and disassembly type temporary rod support device for a tunnel, and belongs to the technical field of tunnel construction. BACKGROUND

[0002] In the process of tunnel construction, there are many reasons for the cracking and deformation of the tunnel structure, such as weak and broken surrounding rock, poor construction quality, or weak support parameters. If the continuous development of adverse deformation cannot be effectively inhibited in time, it is likely to develop into a tunnel collapse accident. The emergency control measures for the adverse deformation of the tunnel structure include two categories of hole slag backfilling counterpressure and additional temporary support. The hole slag backfilling counterpressure needs to be assisted by large machinery, and the construction space near the tunnel arch position is severely limited, so the backfilling operation is difficult. In addition, the hole slag backfilling counterpressure has a great impact on the construction progress, so the backfilling counterpressure scheme is not the best choice in actual construction, and in most cases, the scheme of adding temporary support is often preferred. The conventional temporary support includes temporary ring support, temporary transverse support, temporary vertical support and temporary inclined support, among which the overall stress effect of the temporary ring support is better, but the construction engineering quantity is relatively large, and the construction time required is relatively long, so it is difficult to achieve the rapid support and reinforcement effect of the initial support. Compared with the above, although the single use effect of the temporary transverse support, the temporary vertical support or the temporary inclined support is poor, but the construction speed is relatively fast, and it has obvious advantages in dealing with the extrusion deformation of the local position of the tunnel structure or the continuous deformation in a specific direction, so it is a practical temporary support and reinforcement measure.

[0003] The existing temporary transverse support, temporary vertical support and temporary inclined support are mostly temporarily processed from materials such as I-shaped steel. The temporary processing of the support rod needs to consume a certain amount of time, which may delay the opportunity for emergency rescue, and the processed support rod is only suitable for a specific cross-sectional size, so the material reuse rate is low. In addition, the contact effect of the simply processed support rod with the tunnel structure and the supporting ground is poor, and the rod is prone to deflection during the stress process, thereby affecting the overall support effect of the rod. It can be seen that the temporary reinforcement support rod has relatively obvious defects, and the entire support system has a lot of room for improvement. In view of the above, it has become a problem to be solved in the engineering field to study a fast assembly and disassembly type temporary rod support device for a tunnel. SUMMARY

[0004] In view of this, the purpose of the present application is to provide a fast assembly and disassembly type temporary rod support device for a tunnel, which can overcome the shortcomings of the prior art.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A fast assembly and disassembly type temporary support device for tunnel rod members comprises a spliced expanded steel beam foundation, and a plurality of support unit bodies with adjustable support working modes are detachably connected to the spliced expanded steel beam foundation; the support working modes of the support unit bodies include vertical support working modes, horizontal support working modes or inclined support working modes with adjustable support angles.

[0007] The aforementioned support unit bodies include directional support unit bodies and adjustable inclined support unit bodies; the directional support unit bodies include directional support connecting bases, and telescopic vertical support mechanisms and / or telescopic horizontal support mechanisms are arranged on the directional support connecting bases; the adjustable inclined support unit bodies include adjustable inclined support connecting bases, and adjustable inclined support mechanisms are rotatably connected to the adjustable inclined support connecting bases, and adjustment mechanisms for adjusting the support angles of the adjustable inclined support mechanisms are arranged on one side of the adjustable inclined support mechanisms.

[0008] The aforementioned expanded steel beam foundation includes a plurality of steel beam unit bodies spliced together, and a plurality of directional support unit bodies and / or adjustable inclined support unit bodies are selectively arranged on each column of the steel beam unit bodies.

[0009] Each column of the aforementioned steel beam unit bodies is anchored to the ground of the temporary support section of the tunnel, or telescopic connecting unit bodies are detachably connected to the side portions of the directional support connecting bases and the adjustable inclined support connecting bases, so that the steel beam unit bodies of adjacent columns are connected together through the telescopic connecting unit bodies.

[0010] The aforementioned directional support connecting bases and adjustable inclined support connecting bases are connected to the steel beam unit bodies through a clamping mode.

[0011] The aforementioned steel beam unit bodies include steel beam main bodies, and protrusions are arranged in the middle portions of the steel beam main bodies, so that the directional support unit bodies and the adjustable inclined support unit bodies are clamped on the steel beam main bodies through the protrusions, and fixed hole groups are symmetrically arranged on both side edges of the steel beam main bodies, and positioning steel pipes are arranged in the fixed hole groups.

[0012] The aforementioned directional support connecting bases include directional base main bodies, and first clamping grooves for clamping the steel beam unit bodies are arranged on the bottom surfaces of the directional base main bodies; connecting grooves are arranged on the top surfaces and the side surfaces of the directional base main bodies, and the telescopic vertical support mechanisms, the telescopic horizontal support mechanisms and the telescopic connecting unit bodies are selectively clamped on the directional base main bodies through the connecting grooves.

[0013] The adjustable oblique support connecting base comprises an oblique base body, the bottom surface of the oblique base body is provided with a second clamping groove for clamping a steel beam unit, the top surface is provided with a first rotating shaft connecting seat, one side surface is provided with a second rotating shaft connecting seat, the other side surface is provided with a groove type structure same as the connecting groove of the directional base body, the optional telescopic horizontal support mechanism and the telescopic connecting unit are clamped with the oblique base body through the groove type structure; a third rotating shaft connecting seat is arranged on the adjustable oblique support mechanism, the bottom end of the adjustable oblique support mechanism is hinged with the oblique base body through the first rotating shaft connecting seat, the bottom of the adjusting mechanism is hinged with the second rotating shaft connecting seat, and the upper part is rotationally connected with the adjustable oblique support mechanism through the third rotating shaft connecting seat.

[0014] The telescopic vertical support mechanism comprises a vertical jack member, the top rod end of the vertical jack member is provided with a first top support; the telescopic horizontal support mechanism comprises a horizontal jack member, the top rod end of the horizontal jack member is provided with a second top support; the adjustable oblique support mechanism comprises an oblique jack member, the top rod end of the oblique jack member is provided with a third top support; the telescopic connecting unit comprises a telescopic rod member, and the telescopic rod end of the telescopic rod member is provided with a fish type connecting fastener.

[0015] The first top support, the second top support and the third top support are all adjustable top pressing devices, and the adjustable top pressing device comprises a connecting bottom plate connected with a top plate through an elastic adjusting mechanism for adjusting the support angle of the top plate.

[0016] The elastic adjusting mechanism comprises at least four connecting springs arranged at four corners of the connecting bottom plate, the connecting bottom plate is connected with the top plate through the connecting springs, and a rubber top rod or a spherical top rod is arranged at the center position of the connecting bottom plate; the rubber top rod comprises a steel pipe, a compressible rubber head is arranged at the top of the steel pipe, the bottom end of the rubber top rod is fixedly connected with the connecting bottom plate, and the top end rubber head is abutted with the top plate; the spherical top rod comprises a fixed rod, a spherical end head is arranged at the top end of the fixed rod, a spherical groove matched with the spherical end head is arranged at the center position of the bottom surface of the top plate, the bottom end of the spherical top rod is fixedly connected with the connecting bottom plate, and the top end spherical end head is connected with the top plate in a spherical mode.

[0017] Compared with the prior art, the fast assembly and disassembly type tunnel temporary rod support device disclosed by the application is arranged on the ground of a tunnel section to be temporarily supported, comprises a spliced expanded steel beam foundation, and a plurality of support unit bodies in adjustable support working modes are detachably connected on the spliced expanded steel beam foundation; the expanded steel beam foundation is arranged on the ground of the tunnel and serves as a force receiving foundation of the whole device, the support unit bodies can be flexibly installed on the expanded steel beam foundation according to actual needs, and the support working modes thereof can be adjusted to be a vertical support working mode, a horizontal support working mode or an oblique support working mode with an adjustable support angle, so that the tunnel structure can be quickly supported and reinforced in multiple modes, and the support is flexible and efficient.

[0018] The beneficial effects of the present application are:

[0019] (1) The present application has simple structure and low cost, and the parts are small rod or block structure, which is small in size and easy to transport. At the same time, the device is designed by using the principle of building blocks, and the whole device has the functions of quick assembly and quick disassembly, and the working mode transformation process is efficient and orderly, which can realize the quick support and reinforcement effect of the tunnel structure.

[0020] (2) The present application can select and assemble parts according to actual needs, so as to selectively provide temporary transverse support, temporary inclined support, temporary vertical support and temporary combined support of various cross-section support forms, and various cross-section support forms can also be freely combined in the longitudinal direction of the tunnel, and work together. The whole rod support device has high flexibility and can effectively cope with different tunnel structure disease conditions.

[0021] (3) The present application realizes the length change of the support rod by using the jack, which can be applied to tunnels with different cross-sectional sizes, especially the adjustable inclined support jack designed by the present application, which can realize multi-angle inclined support effect, and the universality of the whole rod support device is greatly improved.

[0022] (4) The support unit of the present application adopts an adjustable pressing device to tightly support the inner wall of the tunnel, which can dynamically adjust the support direction according to the surface shape of the tunnel structure, has good support effect and high reliability.

[0023] (5) The temporary rod support device of the present application has good flexibility and wide application range, which can be arranged in two rows on both sides of the tunnel, and the spliced expanded steel beam foundation can be anchored on the ground to realize stable support while the middle position of the tunnel can be used for vehicle passing, or the two rows are connected by the telescopic connecting unit to make the whole rod support device mainly bear pressure under the action of the tunnel structure deformation pressure, and the structure stress is relatively reasonable, and the structural reliability and durability of the device are guaranteed.

[0024] Other advantages, objects and features of the present application will be set forth in part in the specification, and in part will become apparent to those skilled in the art upon examination of the following or can be learned from practice of the present application. The objects and other advantages of the present application can be realized and obtained by the following description. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings, in which:

[0026] Figure 1 is a structural schematic diagram of the present application.

[0027] Figure 2 is a structural schematic diagram of the connecting structure of the spliced extended steel beam foundation 1.

[0028] Figure 3 is a structural schematic diagram of the connecting structure of the telescopic vertical support mechanism 3 and the directional support connecting base 2.

[0029] Figure 4 is a structural schematic diagram of the connecting structure of the telescopic horizontal support mechanism 4 and the directional support connecting base 2.

[0030] Figure 5 is a structural schematic diagram of the connecting structure of the adjustable inclined support mechanism 6 and the adjustable inclined support connecting base 5.

[0031] Figure 6 is a structural schematic diagram of the connecting structure of the telescopic connecting unit body 8 and the directional support connecting base 2.

[0032] Figure 7 is a structural schematic diagram of the connecting structure of the telescopic connecting unit body 8 and the adjustable inclined support connecting base 5.

[0033] Figure 8 is a structural schematic diagram of the directional support connecting base 2.

[0034] Figure 9 is a structural schematic diagram of the telescopic vertical support mechanism 3.

[0035] Figure 10 is a structural schematic diagram of the telescopic horizontal support mechanism 4.

[0036] Figure 11 is a structural schematic diagram of the adjustable inclined support connecting base 5. Figure 1 .

[0037] Figure 12 is a structural schematic diagram of the adjustable inclined support connecting base 5. Figure 2 .

[0038] Figure 13 is a structural schematic diagram of the adjustable top pressing device (Example 1).

[0039] Figure 14 is a structural schematic diagram of the adjustable top pressing device (Example 2).

[0040] Figure 15 is a structural schematic diagram of the fish-shaped connecting fastener 803 in the open state.

[0041] Figure 16 is a structural schematic diagram of the fish-shaped connecting fastener 803 in the connected state.

[0042] Figure 17 Cross-sectional view of temporary vertical support mode.

[0043] Figure 18 Cross-sectional view of temporary horizontal support mode.

[0044] Figure 19 Cross-sectional view of temporary diagonal support mode.

[0045] Figure 20 Cross-sectional view of temporary horizontal and vertical combined support mode. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present application, and are not intended to limit the protection scope of the present application.

[0047] As shown in Figures 1-20 A fast assembly and disassembly type tunnel temporary rod support device includes a spliced expanded steel beam foundation 1, and a plurality of support unit bodies with adjustable support working modes are detachably connected to the spliced expanded steel beam foundation 1. Specifically, the support working modes of the support unit bodies include a vertical support working mode, a horizontal support working mode, or a diagonal support working mode with adjustable support angles. The expanded steel beam foundation 1 is arranged on the ground of the tunnel and serves as a force bearing foundation of the entire device. The support unit bodies can be flexibly installed on the expanded steel beam foundation 1 as needed, and the installation positions and the number of the support unit bodies are determined according to actual needs.

[0048] The support unit bodies include directional support unit bodies and adjustable diagonal support unit bodies.

[0049] The directional support unit bodies include a directional support connecting base 2, and a telescopic vertical support mechanism 3 and / or a telescopic horizontal support mechanism 4 are arranged on the directional support connecting base 2. The adjustable diagonal support unit bodies include an adjustable diagonal support connecting base 5, and an adjustable diagonal support mechanism 6 is hingedly connected to the adjustable diagonal support connecting base 5. The adjustable diagonal support mechanism 6 is provided with an adjusting mechanism 7 on one side for adjusting the support angle thereof. The adjusting mechanism 7 is a jack mechanism or an electric push rod mechanism.

[0050] The expanded steel beam foundation 1 includes a plurality of steel beam unit bodies spliced together, and multiple columns of the steel beam unit bodies are arranged along the longitudinal direction of the tunnel. The directional support unit bodies and / or the adjustable diagonal support unit bodies are arranged on each column of the steel beam unit bodies. The directional support unit bodies and / or the adjustable diagonal support unit bodies are selected according to actual use needs, and can be multiple directional support unit bodies, multiple adjustable diagonal support unit bodies, or multiple directional support unit bodies and adjustable diagonal support unit bodies combined.

[0051] Each column of steel beam unit is anchored on the corresponding ground of the temporary support section of the tunnel, or the telescopic connecting unit 8 is detachably connected to the side of the directional support connecting base 2 and the adjustable inclined support connecting base 5, so that the steel beam units of adjacent columns are connected together through the telescopic connecting unit 8.

[0052] The directional support connecting base 2 and the adjustable inclined support connecting base 5 are connected to the steel beam unit through a clamping mode.

[0053] The steel beam unit comprises a steel beam body 101, and a protrusion 102 is arranged in the middle of the steel beam body 101, so that the directional support unit and the adjustable inclined support unit are clamped on the steel beam body 101 through the protrusion 102. A fixed hole group is symmetrically arranged at both side edges of the steel beam body 101, and a positioning steel pipe 103 is arranged in the fixed hole group. According to the use requirement, a plurality of steel beam bodies 101 are overlapped with each other, and the positioning steel pipe 103 arranged in the fixed hole group is driven into the ground, so that the steel beam body 101 is fixed firmly.

[0054] Preferably, a U-shaped groove is arranged in the middle of the upper surface of the steel beam body 101, and the two side edges of the U-shaped groove are the positioning bases of the directional support unit and the adjustable inclined support unit. A plurality of spliced protrusions 102 are arranged in the U-shaped groove, the steel beam body 101 and the protrusion 102 are designed as a split splicing structure, the protrusion 102 can be arranged and installed only at the place where the support unit is needed, and the cost is more low.

[0055] The directional support connecting base 2 comprises a directional base body 201, a first clamping groove 202 for clamping the steel beam unit is arranged on the bottom surface of the directional base body 201; and a connecting groove is arranged on the top surface and the side surface respectively, so that the telescopic vertical support mechanism 3, the telescopic horizontal support mechanism 4 and the telescopic connecting unit 8 can be clamped with the directional base body 201 through the connecting groove. Preferably, the installation of the telescopic vertical support mechanism 3, the telescopic horizontal support mechanism 4 and the telescopic connecting unit 8 can be selected according to the actual use requirement.

[0056] The adjustable inclined support connecting base 5 comprises an inclined base body 501, the bottom surface of the inclined base body 501 is provided with a second clamping groove 502 for clamping the steel beam unit body, the top surface is provided with a first rotating shaft connecting seat 503, one side surface is provided with a second rotating shaft connecting seat 504, the other side surface is provided with a groove type structure 505 which is the same as the side surface connecting groove of the directional base body 201, the telescopic horizontal support mechanism 4 and the telescopic connecting unit body 8 are clamped with the inclined base body 501 through the groove type structure 505; and the adjustable inclined support mechanism 6 is provided with a third rotating shaft connecting seat 604, the bottom end of the adjustable inclined support mechanism 6 is hinged with the inclined base body 501 through the first rotating shaft connecting seat 503, the bottom of the adjusting mechanism 7 is hinged with the second rotating shaft connecting seat 504, and the upper part is rotationally connected with the adjustable inclined support mechanism 6 through the third rotating shaft connecting seat 604. Preferably, the installation of the adjustable inclined support mechanism 6, the telescopic horizontal support mechanism 4 and the telescopic connecting unit body 8 can be selected according to actual needs.

[0057] Specifically, the telescopic vertical support mechanism 3 comprises a vertical jack member 301, the first top support 303 is arranged at the end of the top rod 302 of the vertical jack member; the telescopic horizontal support mechanism 4 comprises a horizontal jack member 401, the second top support 403 is arranged at the end of the top rod 402 of the horizontal jack member; the adjustable inclined support mechanism 6 comprises an inclined jack member 601, the third top support 603 is arranged at the end of the top rod 602 of the inclined jack member. The telescopic connecting unit body 8 comprises a telescopic rod member 801, the fish type connecting fastener 803 is arranged at the end of the telescopic rod 802 of the telescopic rod member. The telescopic rod member 801 can be a jack mechanism or an electric push rod mechanism.

[0058] The bottom surface of the directional base body 201 is provided with a first clamping groove 202 matched with the protrusion 102, so that the directional support connecting base 2 is clamped on the steel beam unit body through the first clamping groove 202; the connecting grooves provided on the top surface and the side surface of the directional base body 201 include a vertical connecting groove 203 provided on the top surface of the directional base body 201 and a horizontal connecting groove 204 provided on the side surface, and a limiting beam 205 is hinged in the horizontal connecting groove 204; the bottom end of the vertical jack member 301 is provided with a first clamping part 304 matched with the vertical connecting groove 203, so that the vertical jack member 301 is clamped in the vertical connecting groove 203, and vertical support can be realized; specifically, the first clamping part 304 is a positioning wing plate symmetrically provided on the bottom end of the jack oil cylinder on both sides, the bottom part of the jack oil cylinder with the positioning wing plate is inserted into the vertical connecting groove 203, and the clamping of the directional support connecting base 2 and the telescopic vertical support mechanism 3 is realized. The bottom end of the horizontal jack member 401 is provided with a second clamping part 404 matched with the horizontal connecting groove 204, and the second clamping part 404 is provided with a limiting protrusion 405 corresponding to the limiting beam 205, so that the horizontal jack member 401 is clamped in the horizontal connecting groove 204 and clamped and limited by the limiting beam 205, preventing the horizontal jack member 401 from sliding out of the horizontal connecting groove 204 under external force; the bottom end of the telescopic connecting unit body 8 is provided with the same clamping structure as the bottom end of the horizontal jack member 401, so that the telescopic horizontal support mechanism 4 and / or the telescopic connecting unit body 8 can be installed in the horizontal connecting groove 204.

[0059] The bottom surface of the directional base body 201 is provided with a first clamping groove 202 matched with the protrusion 102, so that the directional support connecting base 2 is clamped on the steel beam unit body through the first clamping groove 202; the connecting grooves provided on the top surface and the side surface of the directional base body 201 include a vertical connecting groove 203 provided on the top surface of the directional base body 201 and a horizontal connecting groove 204 provided on the side surface, and a limiting beam 205 is hinged in the horizontal connecting groove 204; the bottom end of the vertical jack member 301 is provided with a first clamping part 304 matched with the vertical connecting groove 203, so that the vertical jack member 301 is clamped in the vertical connecting groove 203, and vertical support can be realized; specifically, the first clamping part 304 is a positioning wing plate symmetrically provided on the bottom end of the jack oil cylinder on both sides, the bottom part of the jack oil cylinder with the positioning wing plate is inserted into the vertical connecting groove 203, and the clamping of the directional support connecting base 2 and the telescopic vertical support mechanism 3 is realized. The bottom end of the horizontal jack member 401 is provided with a second clamping part 404 matched with the horizontal connecting groove 204, and the second clamping part 404 is provided with a limiting protrusion 405 corresponding to the limiting beam 205, so that the horizontal jack member 401 is clamped in the horizontal connecting groove 204 and clamped and limited by the limiting beam 205, preventing the horizontal jack member 401 from sliding out of the horizontal connecting groove 204 under external force; the bottom end of the telescopic connecting unit body 8 is provided with the same clamping structure as the bottom end of the horizontal jack member 401, so that the telescopic horizontal support mechanism 4 and / or the telescopic connecting unit body 8 can be installed in the horizontal connecting groove 204.

[0060] The first roof support 303, the second roof support 403 and the third roof support 603 are all adjustable roof pressing devices, which comprise a connecting bottom plate 1.1 connected with a top plate 1.2 through an elastic adjusting mechanism, and the elastic adjusting mechanism is used for adjusting the support angle of the top plate 1.2; during the support of the support unit body, the elastic adjusting mechanism can ensure that the top plate 1.2 is in a close support state with the inner wall of the tunnel.

[0061] The elastic adjusting mechanism comprises at least four connecting springs 1.3 arranged at four corners of the connecting bottom plate 1.1, so that the connecting bottom plate 1.1 is connected with the top plate 1.2 through the connecting springs 1.3, and a rubber top rod 1.4 or a spherical top rod 1.5 is arranged at the center position of the connecting bottom plate 1.1.

[0062] The rubber top rod 1.4 comprises a steel pipe, a compressible rubber head is arranged at the top of the steel pipe, the bottom end of the rubber top rod 1.4 is fixedly connected with the connecting bottom plate 1.1, and the top end rubber head is abutted with the top plate 1.2. During the support, the angle adjustment and deformation between the connecting bottom plate 1.1 and the top plate 1.2 are realized by the compression of the connecting spring 1.3 and the rubber head of the rubber top rod 1.4.

[0063] The spherical top rod 1.5 comprises a fixed rod, a spherical end head is arranged at the top end of the fixed rod, a spherical groove matched with the spherical end head is arranged at the center position of the bottom surface of the top plate 1.2, the bottom end of the spherical top rod 1.5 is fixedly connected with the connecting bottom plate 1.1, and the top end spherical end head is connected with the top plate 1.2 in a spherical manner. During the support, the deformation movement between the connecting bottom plate 1.1 and the top plate 1.2 is realized by the spherical connection structure at the top of the spherical top rod 1.5 and the compression deformation of the connecting spring 1.3. DETAILED DESCRIPTION

[0065] s1, preparation work: adopt relevant technical measures to clearly define the tunnel structure cracking deformation section, and then carry out leveling treatment on the ground of the corresponding section, and if necessary, a layer of gravel cushion or on-site mixed lean concrete can be added for ground reinforcement and leveling;

[0066] s2, according to the tunnel structure deformation condition, determine the temporary support reinforcement scheme, including determining the support section spacing and section support form, and arranging the enlarged steel beam foundation 1 on the ground of the corresponding section according to the temporary support reinforcement scheme,

[0067] If the ground needs to remain vehicle passing, the telescopic connecting unit body 8 is not suitable to be arranged, and the positioning steel pipe 103 should be arranged for necessary positioning of the enlarged steel beam foundation 1; if the site has conditions for arranging the telescopic connecting unit body 8, the positioning steel pipe 103 can not be arranged.

[0068] s3, after the installation of the expanded steel beam foundation 1 is completed, according to the temporary support reinforcement scheme, the directional support connecting base 2 and / or the adjustable inclined support connecting base 5 are selected and installed on the expanded steel beam foundation 1, and the telescopic vertical support mechanism 3, the telescopic horizontal support mechanism 4, the adjustable inclined support mechanism 6 and the telescopic connecting unit body 8 are selected and installed on the corresponding connecting base;

[0069] s4, the corresponding jacks are extended in batches according to the odd and even rows, so that the corresponding support rods preliminarily push against the tunnel structure; after all the support rods push against the tunnel structure, the jacking pressure of the jacks is adjusted again in batches according to the odd and even rows, so that the corresponding adjustable pressure devices are dead against the tunnel structure,

[0070] The support rods in the same row should support the tunnel structure synchronously to ensure that the overall force of the whole set of devices is symmetrical, and at the same time, the monitoring and measurement of the tunnel structure should be strengthened during the whole supporting process, and the working pressure of the corresponding jacks is adjusted according to the monitoring data;

[0071] s5, after the tunnel structure treatment is completed and stable, the jacks are depressurized in the reverse order of step s4, and the rod support device is removed in the reverse order of the above steps, and then the disassembled parts are arranged after the disassembly is completed, and are transported to the relevant position for standby.

[0072] The above is only a preferred embodiment of the present application, and is not limited to any form of the present application. Any simple modification, equivalent change and modification of the above embodiment without departing from the technical solution content of the present application, according to the technical essence of the present application, all still belong to the scope of the technical solution of the present application.

Claims

1. A quick-assembly and quick-disassembly tunnel temporary pole support device, characterized in that: It includes a spliced ​​enlarged steel beam foundation (1), on which several adjustable support units are detachably connected. The support units include vertical support, horizontal support or oblique support with adjustable support angle. The support unit includes a directional support unit and an adjustable inclined support unit; the directional support unit includes a directional support connecting base (2), on which a telescopic vertical support mechanism (3) and / or a telescopic horizontal support mechanism (4) are provided; the adjustable inclined support unit includes an adjustable inclined support connecting base (5), on which an adjustable inclined support mechanism (6) is rotatably connected, and on one side of the adjustable inclined support mechanism (6) is an adjustment mechanism (7) for adjusting its support angle; The spliced ​​enlarged steel beam foundation (1) includes several steel beam units spliced ​​together, which are arranged in multiple rows along the longitudinal direction of the tunnel. Each row of steel beam units is equipped with multiple directional support units and / or adjustable inclined support units. Each column of steel beam unit is anchored on the ground corresponding to the temporary support section of the tunnel, or a telescopic connecting unit (8) is detachably connected to the side of the directional support connecting base (2) and the adjustable inclined support connecting base (5), so that the steel beam units of adjacent columns are connected to each other through the telescopic connecting unit (8). The steel beam unit includes a steel beam body (101), and a protrusion (102) is provided in the middle of the steel beam body (101) so that the directional support unit and the adjustable inclined support unit are snapped onto the steel beam body (101) through the protrusion (102). Fixing hole groups are symmetrically provided on both sides of the steel beam body (101), and positioning steel pipes (103) are installed in the fixing hole groups.

2. The quick-assembly and quick-disassembly tunnel temporary pole support device according to claim 1, characterized in that: The directional support connecting base (2) and the adjustable inclined support connecting base (5) are connected to the steel beam unit by a snap-fit ​​method.

3. The quick-assembly and quick-disassembly tunnel temporary pole support device according to claim 1, characterized in that: The directional support connection base (2) includes a directional base body (201), and a first slot (202) for engaging with the steel beam unit is provided on the bottom surface of the directional base body (201); the top surface and the side surface are respectively provided with connecting slots, and the optional telescopic vertical support mechanism (3), telescopic horizontal support mechanism (4), and telescopic connecting unit (8) are engaged with the directional base body (201) through the connecting slots; The adjustable inclined support connecting base (5) includes an inclined base body (501), the bottom surface of which is provided with a second slot (502) for engaging with the steel beam unit, and the top surface is provided with a first rotating shaft connecting seat (503). One side is provided with a second rotating shaft connecting seat (504), and the other side is provided with a groove-shaped structure (505) identical to the connecting groove on the side of the directional base body (201). Optional telescopic lateral support mechanism (4) and telescopic connecting unit are also included. The element (8) is engaged with the inclined base body (501) through a groove structure (505); while the adjustable inclined support mechanism (6) is provided with a third rotating shaft connecting seat (604). The bottom end of the adjustable inclined support mechanism (6) is hinged to the inclined base body (501) through the first rotating shaft connecting seat (503). The bottom of the adjustment mechanism (7) is hinged to the second rotating shaft connecting seat (504), and the upper part is rotatably connected to the adjustable inclined support mechanism (6) through the third rotating shaft connecting seat (604).

4. The quick-assembly and quick-disassembly tunnel temporary pole support device according to any one of claims 1 or 3, characterized in that: The telescopic vertical support mechanism (3) includes a vertical jack component (301), and a first support (303) is provided at the end of the top rod (302) of the vertical jack component; the telescopic horizontal support mechanism (4) includes a horizontal jack component (401), and a second support (403) is provided at the end of the top rod (402) of the horizontal jack component; the adjustable inclined support mechanism (6) includes an inclined jack component (601), and a third support (603) is provided at the end of the top rod (602) of the inclined jack component; the telescopic connecting unit (8) includes a telescopic rod component (801), and a fish-shaped connecting fastener (803) is provided at the end of the telescopic rod (802) of the telescopic rod component.

5. The quick-assembly and quick-disassembly tunnel temporary pole support device according to claim 4, characterized in that: The first top support (303), the second top support (403) and the third top support (603) are all adjustable top pressing devices. The adjustable top pressing device includes a connecting base plate (1.1). The connecting base plate (1.1) is connected to the top plate (1.2) through an elastic adjustment mechanism for adjusting the support angle of the top plate (1.2).

6. The quick-assembly and quick-disassembly tunnel temporary pole support device according to claim 5, characterized in that: The elastic adjustment mechanism includes at least four connecting springs (1.3), which are evenly distributed at the four corners of the connecting base plate (1.1) so that the connecting base plate (1.1) is connected to the top plate (1.2) through the connecting springs (1.3). A rubber top rod (1.4) or a spherical top rod (1.5) is provided at the center of the connecting base plate (1.1). The rubber top rod (1.4) includes a steel pipe with a compressible rubber head at the top. The bottom end of the rubber top rod (1.4) is fixed to the connecting base plate (1.1), and the top rubber head abuts against the top plate (1.2). The spherical top rod (1.5) includes a fixed rod with a spherical end at the top. A spherical groove matching the spherical end is provided at the center of the bottom surface of the top plate (1.2). The bottom end of the spherical top rod (1.5) is fixedly connected to the connecting base plate (1.1), and the top spherical end is spherically connected to the top plate (1.2).

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