CN211258642U - Large-deformation support for reinforcing shaped inner supporting ring arch of soft rock tunnel - Google Patents

Abstract

The utility model relates to a soft rock tunnel regularization inner supporting ring arch reinforcement large deformation support, which comprises an easily detachable regularization inner supporting ring arch, a telescopic steel frame top supporting system and an arch changing temporary supporting frame; the easily detachable and stereotyped inner supporting ring arch comprises an annular inner supporting ring arch formed by connecting a plurality of ring arch units; the ring arch unit comprises reinforced concrete, electromagnets and iron blocks which are arranged on two sides of the reinforced concrete; when the two ring arch units are connected; the electromagnet of one annular arch unit is connected with the iron blocks of the adjacent annular arch units in a matching way; the utility model discloses an inner supporting ring is formed by a plurality of ring arch unit combinations, and every ring arch unit loops through electro-magnet and iron plate head and the tail and connects, when needs are connected, and the power of switch-on electro-magnet makes it produce magnetic force, can adsorb the iron plate, makes two adjacent ring arch unit link together. Each ring arch unit is connected in sequence to form an inner supporting ring; the construction method is simple and the construction speed is high.

Description

Large-deformation support for reinforcing shaped inner supporting ring arch of soft rock tunnel

Technical Field

The utility model relates to a tunnel supporting construction technical field, in particular to soft rock tunnel regularization internal stay encircles and consolidates large deformation and strut.

Background

In the process of excavating the tunnel, the excavated tunnel needs to be initially supported. When the construction is carried out in places with poor geology, various adverse conditions are often met. If the primary support is easy to deform greatly in soft rock areas, the tunnel is easy to collapse locally due to insufficient support force. To deal with these complications, the project is typically shut down and the tunnel is reinforced by placing supports. In the traditional supporting method, full framing is generally erected at a reinforcing section and then construction is carried out on the full framing, and the erection of the supporting generally adopts the modes of driving a long anchor rod and arranging a layer of primary supporting outside the primary supporting to form two primary supporting, prestressed anchor cables and the like. And in these construction methods, construction speed is comparatively slow, and setting up of full hall support needs a large amount of manpowers to need to occupy a large amount of spaces, with the tunnel blocking, be unfavorable for tunnel engineering's further construction, and after this construction section, demolish full hall support and still have a large amount of work load. In addition, the supports only play a role in reinforcing surrounding rocks in the tunnel construction process, the problem of large deformation in the construction process is solved, the supports need to be dismantled after the construction is finished, the dismantling mode of the construction method is complex, and the construction efficiency is low.

In view of the above problems, it is necessary to improve them.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the defect among the above-mentioned prior art, provide one kind and can restrict soft rock tunnel and strut the ring arch in the regularization and consolidate the large deformation support that takes place large deformation and the construction is simple, the efficiency of construction is high in soft rock tunnel.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: the shaped inner supporting ring arch for reinforcing the large-deformation support of the soft rock tunnel comprises an easily detachable shaped inner supporting ring arch, a telescopic steel frame top supporting system and an arch changing temporary supporting frame; the easily detachable and stereotyped inner supporting ring arch comprises an annular inner supporting ring arch formed by connecting a plurality of ring arch units; the ring arch unit comprises reinforced concrete, electromagnets and iron blocks which are arranged on two sides of the reinforced concrete; when the two ring arch units are connected; the electromagnet of one annular arch unit is connected with the iron blocks of the adjacent annular arch units in a matching way; the telescopic steel frame top support system comprises a mechanical box and a lower support sleeve fixedly arranged on the mechanical box, wherein the bottom of the lower support sleeve is sleeved with a spring, the top of the spring is provided with a spring partition plate, an upper support rod is arranged on the spring partition plate and sleeved in the lower support sleeve, two sides of the spring partition plate are connected with ropes, and correspondingly, a power mechanism for connecting the ropes is arranged in the mechanical box; the power mechanism comprises a partition board fixedly arranged in the mechanical box, an energy box and a pull rope motor are fixedly arranged on the partition board, and the energy box is connected with the pull rope motor through a lead; one end of the rope is connected with the spring partition plate, and the other end of the rope is connected with the pull rope motor; the rope pulling motor comprises a motor, a rotating rod, an outward extending rod, a winding drum support and a rope winding drum which are sequentially arranged; one side of the rope winding drum is connected with the motor, the rope is wound by rotating a rotating rod of the motor, the other side of the rope winding drum extends out of the drum support, a connecting piece is arranged on the side face of the rope winding drum, and a round hole is formed in the connecting piece; the bottom plate of the arch-changing temporary support frame; the T-shaped rod is fixedly arranged on the bottom plate, steel frames are arranged on two sides of the T-shaped rod, a steel frame groove is formed in one end, close to the T-shaped rod, of each steel frame, and the T-shaped rods are sleeved in the steel frame grooves and connected through the positioning adjusting mechanisms.

As an optimized proposal of the utility model, the external power supply of the electromagnet leads the electromagnet and the iron block to be separated or connected through the on-off of the power supply.

As a preferred scheme of the utility model, the outer part of the ring arch unit is closely attached to the primary support, and a supporting and positioning mechanism is fixedly arranged in the ring arch unit; the supporting and positioning mechanism comprises supporting rods which are fixedly arranged on the bottom supporting piece and symmetrically arranged, connecting rods which are vertical to the supporting rods are fixedly arranged on two sides of each supporting rod, and inclined struts are assembled at the joints of the connecting rods and the supporting rods; a cross rod is arranged at the top of the supporting rod, and a patch board is arranged on the cross rod; the bottom support piece is provided with a generator, and the generator is connected with the patch board through a lead.

As a preferred scheme of the utility model, location adjustment mechanism has cup jointed the threaded rod including setting firmly solid fixed ring on the both sides steelframe on the solid fixed ring of both sides, and the junction of solid fixed ring and threaded rod is provided with the nut.

As a preferred scheme of the utility model, a steel frame bottom plate is fixedly arranged at the bottom of the steel frame, and the inner side of the steel frame bottom plate is arranged on the bottom plate; the steel frame bottom plate comprises a connecting part and an operating platform part, the connecting part is fixedly connected with the operating platform part and is integrally formed, and the bottom of the steel frame is fixedly arranged between the connecting part and the operating platform part; the length of the connecting part is 2 times of that of the operating platform part.

As a preferred scheme of the utility model, the power mechanism comprises a partition board fixedly arranged in the mechanical box, an energy box and a pull rope motor are fixedly arranged on the partition board, and the energy box is connected with the pull rope motor through a wire; one end of the rope is connected with the spring partition plate, and the other end of the rope is connected with the pull rope motor; the bottom of mechanical box is provided with at least two sets of wheels, and the wheel equidistance is laid in the bottom of mechanical box.

As a preferred scheme of the utility model, a serving section of thick bamboo upper end is provided with the locating part, has set firmly the stay cord on the locating part, is connected with the crotch on the stay cord, and the crotch is used for hooking the round hole on the side connecting piece, fixed serving section of thick bamboo.

As an optimized scheme of the utility model, the length of machinery case is 2 times of bottom suspension sleeve width.

As an optimized proposal of the utility model, the outer diameter of the spring is less than the length of the spring clapboard.

As an optimized proposal of the utility model, the steel frame is in a triangular shape.

The utility model has the advantages that:

1. the utility model discloses an inner supporting ring is formed by a plurality of ring arch unit combinations, and every ring arch unit loops through electro-magnet and iron plate head and the tail and connects, when needs are connected, and the power of switch-on electro-magnet makes it produce magnetic force, can adsorb the iron plate, makes two adjacent ring arch unit link together. Each ring arch unit is connected in sequence to form an inner supporting ring. The construction method is simple and the construction speed is high.

2. The utility model discloses a support frame can make the width of support frame change through adjusting nut, steelframe and bracing piece to the size of adaptation tunnel entrance to a cave can make constructor be under construction in each position in tunnel.

3. The utility model discloses a support frame, telescopic steelframe lower part all are equipped with the wheel, have fine mobility in the work progress, accomplish the back when a construction section, can be quick remove support frame and telescopic steelframe to next construction section and be under construction. Compared with the traditional support, the method saves a large amount of workload of erection and removal and has high efficiency.

Drawings

FIG. 1 is a structural diagram of the shaped inner supporting ring arch reinforced large-deformation support for the soft rock tunnel of the utility model;

FIG. 2 is a schematic view of the telescopic steel frame top brace of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the temporary support stand of FIG. 1 according to the present invention;

fig. 4 is a partial enlarged view of the node B of fig. 2 according to the present invention;

FIG. 5 is a schematic view showing the connection between the electromagnet and the iron block of the adjacent ring arch units in FIG. 3 according to the present invention;

figure 6 is a schematic view of the electromagnet connection node of figure 1 according to the present invention;

FIG. 7 is a schematic view of the advanced microcatheter of FIG. 1 in accordance with the present invention;

FIG. 8 is a schematic view of the steel frame of FIG. 2 according to the present invention;

figure 9 is a top view of the present invention in figure 2;

figure 10 is a schematic view of the pull-cord motor of figure 2 in accordance with the present invention;

figure 11 is a schematic view of the roll support of figure 10 of the present invention;

figure 12 is an elevation view of the roll-holding apparatus of figure 10 in accordance with the present invention.

Reference numbers in the figures: the device comprises an advancing small guide pipe 1, a primary support 2, a machine box 3, a small guide pipe 4, a small hole 5, a grouting opening 6, a patch board 7, an electromagnet 8, an iron block 9, a lead wire 10, a tail end protrusion 11, an iron block protrusion 12, an electromagnet protrusion 13, an electromagnet tail end protrusion 14, an annular arch unit 15, reinforced concrete 16, a pull rope motor 18, a wheel 19, a partition plate 20, a generator 21, a rope 22, a spring 23, a spring partition plate 24, a lower support sleeve 25, an upper support rod 26, a nut 27, a wheel shaft 28, a support wheel 29, a rope winding drum 30, a rope winding drum support 31, an extension rod 32, a rotating rod 33, a motor 40, a round hole 41, a pull rope 42, a limiting piece 43, a side connecting piece 44 and a plug.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Example (b): as shown in fig. 1-12, the shaped inner supporting ring arch of the soft rock tunnel is used for reinforcing a large-deformation support, and comprises an easily detachable shaped inner supporting ring arch, a telescopic steel frame top supporting system and an arch-changing temporary supporting frame; the easily detachable and stereotyped inner supporting ring arch comprises an annular inner supporting ring arch formed by connecting a plurality of ring arch units 15; the ring arch unit 15 comprises reinforced concrete 16, electromagnets 8 and iron blocks 9 which are arranged on two sides of the reinforced concrete 16; wherein the reinforced concrete 16 is a main body structure, and the iron block 9 and the electromagnet 8 are buried in the main body part to ensure a certain concrete protective layer thickness so as to ensure that the two cannot fall off due to overlarge magnetic force; the utility model discloses an inner supporting ring is formed by a plurality of ring arch unit combinations, and every ring arch unit loops through electro-magnet and iron plate head and the tail and connects, when needs are connected, and the power of switch-on electro-magnet makes it produce magnetic force, can adsorb the iron plate, makes two adjacent ring arch unit link together. Each ring arch unit is connected in sequence to form an inner supporting ring. The construction method is simple and the construction speed is high.

When the two ring arch units 15 are connected; the electromagnet 8 of one ring arch unit 15 is matched and connected with the iron block 9 of the adjacent ring arch unit 15. When the circular arch units 15 are combined, one iron block 9 is embedded into the electromagnet 8 of the adjacent circular arch unit 15, then the power supply of the electromagnet 8 is switched on, at the moment, the electromagnet 8 generates magnetic force and attracts the iron block 9 mutually, so that the two adjacent circular arch units are closely connected together, and the number of the circular arch units 15 is 5 and the circular arch units are arranged at equal intervals.

The outer side of the circular arch unit 15 is tightly attached to the primary support 2, then the circular arch units 15 are sequentially connected end to end, a plurality of small advanced conduits 1 are arranged on the primary support 2, and the inner side of the circular arch unit 15 is positioned through a supporting mechanism; the supporting and positioning mechanism comprises supporting rods 50 which are fixedly arranged on the bottom supporting piece and symmetrically distributed, connecting rods 48 which are vertical to the supporting rods 50 are fixedly arranged on two sides of the supporting rods 50, and inclined struts 49 are assembled at the joints of the connecting rods 48 and the supporting rods 50; a cross rod is arranged at the top of the support rod 50, and a patch board 7 is arranged on the cross rod.

The generator 21 is installed on the bottom support, and the generator 21 is connected with the patch board 7 through the lead 10.

The electromagnet 8 is externally connected with a power supply, and the electromagnet 8 and the iron block 9 are separated or connected through the on-off of the power supply; the electromagnet 8 is connected with a lead 10, the end part of the lead 10 is connected with a plug 54, and the plug 54 is inserted into an external power supply; when the circular arch units 15 are combined, the iron block 9 of one circular arch unit is embedded into the electromagnet 8 of the adjacent circular arch unit 15, then the plug 54 on the lead 10 on the electromagnet 8 is inserted into the patch board 7, and the electromagnet 8 generates magnetic force to attract the iron block 9.

The electromagnet 8 is externally connected with a power supply, the electromagnet 8 and the iron block 9 are separated or connected through the on-off of the power supply, when the inner supporting ring arch is dismantled, the external power supply of the electromagnet 8 needs to be disconnected, the electromagnet loses magnetism, the attraction to the iron block 9 is lost, and then a worker removes the inner supporting ring arch from top to bottom; the utility model discloses after the construction, can make it lose the attraction to the iron plate through the electro-magnet demagnetization in with interior vaulting ring unit of the mode of disconnected power supply. The removal can then be carried out quickly. Compared with the traditional dismantling method, the method has obvious high efficiency.

The iron block 9 comprises an iron block bulge 12 and a tail end bulge 11; the electromagnet 8 comprises an electromagnet bulge 13 and an electromagnet tail end bulge 14; the tail end bulge 11 and the electromagnet tail end bulge 14 are respectively fixedly connected with reinforced concrete 16, and the iron block bulge 12 and the electromagnet bulge 13 are in adaptive clamping connection; the iron block bulge 12 comprises a plurality of connecting strips 12-1, and connecting grooves 12-2 are formed between every two adjacent connecting strips 12-1; correspondingly, the electromagnet bulge 13 comprises a plurality of positioning strips 13-1, positioning grooves 13-2 are formed between the adjacent positioning strips 13-1, the positioning grooves 13-2 are mutually clamped with the connecting strips 12-1, and the connecting grooves 12-2 are mutually clamped with the positioning strips 13-1; by adopting the technical scheme, the electromagnet 8 and the iron block 9 are better connected together, the up-and-down dislocation movement can not occur, and the connection stability is ensured. The utility model discloses an it is protruding that the electro-magnet at the both ends of ring arch unit has the one-to-one with the iron plate surface to make the better linking together of electro-magnet and iron plate, dislocation removal about can not taking place.

The telescopic steel frame top support system comprises a mechanical box 3 and a lower support sleeve 25 fixedly arranged on the mechanical box 3, wherein the bottom of the lower support sleeve 25 is sleeved with a spring 23, the top of the spring 23 is provided with a spring partition plate 24, the spring partition plate 24 is provided with an upper support rod 26, the upper support rod 26 is sleeved in the lower support sleeve 25, two sides of the spring partition plate 24 are connected with ropes 22, and correspondingly, a power mechanism for connecting the ropes 22 is arranged in the mechanical box 3; the power mechanism drives the rope to contract, the spring partition plate 24 moves downwards to extrude the spring 23, the upper supporting rod 26 moves downwards, then the rope is fixed, the power mechanism is closed, the steel frame top support contraction can be completed, if the upper supporting rod 26 needs to be stretched, the fixed rope 22 in the motor 18 is released, the elastic potential energy stored in the spring 23 in the system is released, the spring 23 drives the spring partition plate 24 to ascend, and finally the upper supporting rod 26 ascends to the top of the inner supporting ring.

The power mechanism comprises a clapboard 20 fixedly arranged in the mechanical box 3, an energy box 17 and a motor 18 are fixedly arranged on the clapboard 20, and the energy box 17 is connected with the motor 18 through a lead 10; one end of the rope 22 is connected with the spring separator 24, and the other end is connected with the motor 18; open motor 18 and can tighten up the rope 22 that links to each other with spring spacer 24, at this moment spring spacer 24 moves down, extrusion spring 23 to make the upper strut 26 move down, then fixed rope closes the shrink that the steelframe shore can be accomplished to motor 18, the utility model discloses a telescopic steelframe shore system is inside to be provided with the motor, and the motor can be tightened up the rope, provides mechanical energy and compresses the spring downwards, and converts mechanical energy into elastic potential energy and store in the spring, when the area need be with the steelframe shore, only need release elastic potential energy in the spring can, accomplish the flexible of steelframe shore through this kind of mode.

The pull rope motor 18 comprises a motor 40, a rotating rod 33, an overhanging rod 32, a winding drum support 31 and a rope winding drum 30 which are sequentially arranged; one side of the rope winding drum 30 is connected with the motor 40, the rope is wound by the rotation of the rotating rod 33 of the motor 40, the other side of the rope winding drum extends out of the drum support 31, the side surface of the rope winding drum is provided with a connecting piece 44, and a round hole 41 is formed in the connecting piece 44; the upper end of the rope drum 30 is provided with a limiting piece 43, a pulling rope 42 is fixedly arranged on the limiting piece 43, a hook 46 is connected to the pulling rope 42, and the hook 46 is used for hooking the round hole 41 on the side connecting piece 44 to fix the rope drum 30.

The rope drum 30 is lifted by the drum support 31, the rope drum 30 is prevented from contacting the ground, one side of the rope drum 30 is connected with the motor 40, the rope is wound by the rotation of the rotating rod 33 of the motor 40, the other side of the rope drum extends out of the drum support 31, the connecting piece 44 is arranged on the side face of the rope drum 30, and after the rope drum 30 is wound, the hook 46 on the pull rope 42 fixed on the limiting piece is hooked on the round hole 41 on the connecting piece on the side face through artificial regulation and control, so that the rope drum 30 is fixed; the pull cord motor 18 is turned on to tighten the steel strand 22 connected to the spring diaphragm 24, which moves the spring diaphragm 24 downward, compressing the spring 23 and moving the upper support rod 26 downward.

The energy box 17 provides power for the motor 18, the lead 10 is connected with the energy box 17 and the motor 18, and the wheels 19 are arranged on the bottom surface of the mechanical box 3, so that the maneuverability of the whole device is increased.

At least two groups of wheels 19 are arranged at the bottom of the mechanical box 3, and the wheels 19 are equidistantly distributed at the bottom of the mechanical box 3; by adopting the scheme, the driving device has better maneuverability, and the wheels 19 can be pushed to any position inside the tunnel according to a construction site during construction, so that the construction is convenient. After one construction section is completed, the telescopic steel frame can be quickly moved to the next construction section for construction. Compared with the traditional support, the method saves a large amount of workload of erection and removal and has high efficiency.

The length of the mechanical box 3 is 2 times of the width of the lower support sleeve 25; by adopting the above scheme, the contact area between the lower support sleeve 25 and the bottom of the mechanical box 3 is increased, the stability of the connection of the lower support sleeve 25 on the mechanical box 3 is improved, and meanwhile, the stability and the safety of the upper support rod 26 rising to the top of the inner support ring are further improved.

The length of the lower support sleeve 25 corresponds to the length of the upper support strut 26; the length of the lower support sleeve 25 is 1.5 times the length of the spring 23; by adopting the scheme, the extension and contraction of the spring 23 are always positioned in the lower support sleeve 25, and meanwhile, the support strength of the upper support rod 26 is maximized.

The outer diameter of the spring 23 is smaller than the length of the spring partition plate 24, the spring partition plate 24 is fixedly connected with the upper support rod 26, and the outer diameter of the upper support rod 26 is smaller than the length of the spring partition plate 24; by adopting the scheme, the supporting stability of the upper supporting rod 26 is improved, and the supporting safety of the upper supporting rod 26 is ensured.

The arch-changing temporary support frame comprises a bottom box 46 and a bottom plate 37 fixedly arranged on the bottom box 46; a T-shaped rod 34 is fixedly arranged on the bottom plate 37, steel frames 36 are arranged on two sides of the T-shaped rod 34, a steel frame groove 45 is formed in one end, close to the T-shaped rod 34, of each steel frame 36, and the T-shaped rods 34 are sleeved in the steel frame grooves 45 and connected through positioning adjusting mechanisms; the steel frame 36 is in a triangular shape and is an integral body, so that the integral structural strength and firmness of the support frame are improved; the positioning adjusting mechanism comprises fixing rings 38 fixedly arranged on the steel frames 36 at two sides, threaded rods 39 are sleeved on the fixing rings 38 at two sides, and nuts 27 are arranged at the joints of the fixing rings 38 and the threaded rods 39; the T-bar 34 is fixed on the bottom plate 37, and mainly functions to support the steel frame 36 and transfer the load on the steel frame 36 to the bottom plate 37.

The utility model discloses a support frame can pass through adjusting nut 27 and steelframe 36 to the size of adaptation tunnel entrance to a cave can satisfy the requirement that the constructor was under construction in each position in tunnel.

A steel frame bottom plate 35 is fixedly arranged at the bottom of the steel frame 36, and the inner side of the steel frame bottom plate 35 is arranged on the bottom plate 37; therefore, the steel frame 36 is in contact with the bottom plate 37 through the steel frame bottom plate 35 in the moving process, the contact area between the steel frame bottom plate 35 and the bottom plate 37 is increased, and the construction safety is guaranteed.

The steel frame bottom plate 35 comprises a connecting part 35-1 and an operating platform part 35-2, the connecting part 35-1 is fixedly connected with the operating platform part 35-2 and integrally formed, and the bottom of the steel frame 36 is fixedly arranged between the connecting part 35-1 and the operating platform part 35-2; the connecting part 35-1 is a steel frame 36 close to the inner side of the T-shaped rod 34, the operating platform part 35-2 is the outer part of the steel frame 36, and the operating platform part 35-2 is an outer side suspension structure and can be used as a construction operating platform.

The length of the connecting part 35-1 is 2 times that of the operating platform part 35-2, so that the operating platform part 35-2 can be used as a construction operating platform while the structural strength of the whole supporting frame is guaranteed, and construction is facilitated for constructors.

The bottom of the bottom box 46 is provided with a wheel shaft 28, and two sides of the wheel shaft 28 are provided with supporting wheels 29; the utility model discloses a support frame lower part is equipped with wheel 29, has fine mobility in the work progress, accomplishes the back when a construction section, can be quick remove the support frame to next construction section and be under construction. Compared with the traditional support, the method saves a large amount of workload of erection and removal and has high efficiency.

The specific embodiment of the utility model includes the following steps:

and (1) manufacturing the ring arch unit 15. The main body of the circular arch unit 15 is made of reinforced concrete 16 and is arc-shaped, and the two ends of the circular arch unit 15 are respectively provided with an iron block 9 and an electromagnet 8. Electromagnet 8 and iron plate 9 set up inside the host material, and the outside needs to have the concrete protective layer of certain thickness to electromagnet 8 and iron plate 9 drop, electromagnet 8 sets up the arch with iron plate 9 on, and the position one-to-one, if protruding position is not in place, will unable the construction.

And (2) constructing the temporary support frame. The temporary support frame is moved to a position needing to be reinforced in the soft rock tunnel, then the nut 27 is adjusted, the nut 27 is rotated to enable the steel frame 36 to move outwards along the threaded rod 39, the width of the steel frame 36 on the support frame is enlarged, and a construction platform is provided for constructors.

And (3) assembling the inner supporting ring arch. The ring arch units 15 are tightly attached to the primary support 2, then the ring arch units 15 are sequentially connected end to end, the electromagnets 8 of the ring arch units 15 are connected with the iron blocks of the next ring arch unit 9, then the external power supply of the electromagnets 8 is started, so that the electromagnets generate magnetic force to adsorb the iron blocks 9, and the two adjacent ring arch units 15 are connected together. The sequential connection of the ring arch units 15 is performed in the same manner, and finally the inner supporting ring arch is formed.

And (4) moving the temporary support frame, adjusting the steel frame 36 to reduce the width of the support frame, increasing the distance between the tunnel and the support frame to enable the support frame to move freely, and then moving the support frame to the next construction section.

And (5) constructing the telescopic steel frame top support. The telescopic steel frame top support is moved to the bottom of the assembled inner support ring arch, then the pull rope 42 is unfastened, so that the elastic potential energy stored in the spring 23 in the system is released, the spring 23 drives the spring partition plate 24 to ascend, and finally the upper support rod 26 ascends to the top of the inner support ring to further reinforce the inner support ring, so that the inner support ring is not loosened.

And (6) repeating the steps 1 to 5, so that one inner support ring is arranged at intervals of the soft rock tunnel, and the whole section of the tunnel is supported.

And (7) reinforcing the tunnel. The deformation of the soft rock tunnel is controlled through the steps, and the local reinforcement of the tunnel can be better performed.

And (8) dismantling the support. After the local reinforcement of the tunnel is completed, firstly starting a rope pulling motor 18, contracting a steel strand 22 which moves a telescopic steel frame top support to enable an upper support rod 26 to move downwards, then artificially hooking a hook 46 on a rope pulling 42 on a limiting piece 43 to a round hole 41 on a cylindrical extending piece to realize the fixation of the steel strand 22, then closing the motor 18, and then moving a temporary support frame to other positions; and moving the temporary support frame to the lower part of the ring arch, dismantling the ring arch on the support frame by constructors, disconnecting the power supply of the electromagnet, and dismantling the ring arches one by the constructors from top to bottom.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention 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.

Although the reference numerals in the figures are used more here: the term "advanced small conduit" 1, preliminary bracing 2, machine box 3, small conduit 4, small hole 5, grouting port 6, patch board 7, electromagnet 8, iron block 9, wire 10, end protrusion 11, iron block protrusion 12, electromagnet protrusion 13, electromagnet end protrusion 14, ring arch unit 15, reinforced concrete 16, rope pulling motor 18, wheel 19, partition 20, generator 21, rope 22, spring 23, spring partition 24, lower support sleeve 25, upper support rod 26, nut 27, wheel shaft 28, support wheel 29, rope drum 30, rope drum support 31, outrigger 32, rotating rod 33, motor 40, round hole 41, rope pulling 42, limiting piece 43, side connection piece 44, plug 54, etc., but does not exclude the possibility of using other terms; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (9)

1. Soft rock tunnel regularization internal stay encircles and consolidates big deformation support, its characterized in that: the system comprises an easily detachable shaped inner supporting ring arch, a telescopic steel frame top supporting system and an arch replacing temporary supporting frame; the easily detachable and stereotyped inner supporting ring arch comprises an annular inner supporting ring arch formed by connecting a plurality of ring arch units (15); the ring arch unit (15) comprises reinforced concrete (16), electromagnets (8) and iron blocks (9) which are arranged on two sides of the reinforced concrete (16); when the two ring arch units (15) are connected; the electromagnet (8) of one ring arch unit (15) is connected with the iron block (9) of the adjacent ring arch unit (15) in a matching way; the telescopic steel frame top support system comprises a mechanical box (3) and a lower support sleeve (25) fixedly arranged on the mechanical box (3), wherein a spring (23) is sleeved at the bottom of the lower support sleeve (25), a spring partition plate (24) is arranged at the top of the spring (23), an upper support rod (26) is arranged on the spring partition plate (24), the upper support rod (26) is sleeved in the lower support sleeve (25), two sides of the spring partition plate (24) are connected with ropes (22), and correspondingly, a power mechanism used for connecting the ropes (22) is arranged in the mechanical box (3); the power mechanism comprises a partition plate (20) fixedly arranged in the mechanical box (3), an energy box (17) and a pull rope motor (18) are fixedly arranged on the partition plate (20), and the energy box (17) is connected with the pull rope motor (18) through a wire (10); one end of the rope (22) is connected with the spring partition plate (24), and the other end is connected with the pull rope motor (18); the rope pulling motor (18) comprises a motor (40), a rotating rod (33), an extending rod (32), a winding drum support (31) and a rope winding drum (30) which are sequentially arranged; one side of the rope winding drum (30) is connected with the motor (40), the rope is wound by the rotation of a rotating rod (33) of the motor (40), the other side of the rope winding drum extends out of the drum support (31), a connecting piece (44) is arranged on the side face of the rope winding drum, and a round hole (41) is formed in the connecting piece (44); the arch-changing temporary support frame bottom plate (37); t-shaped rods (34) are fixedly arranged on the bottom plate (37), steel frames (36) are arranged on two sides of each T-shaped rod (34), a steel frame groove (45) is formed in one end, close to each T-shaped rod (34), of each steel frame (36), and each T-shaped rod (34) is sleeved in the corresponding steel frame groove (45) and connected through a positioning adjusting mechanism.

2. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 1 characterized in that: the electromagnet (8) is externally connected with a power supply, and the electromagnet (8) and the iron block (9) are separated or connected through the on-off of the power supply.

3. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 1 characterized in that: the outer part of the circular arch unit (15) is tightly attached to the primary support (2), and a support positioning mechanism is fixedly arranged in the circular arch unit (15); the supporting and positioning mechanism comprises supporting rods (50) which are fixedly arranged on the bottom supporting piece and symmetrically distributed, connecting rods (48) which are perpendicular to the supporting rods (50) are fixedly arranged on two sides of the supporting rods (50), and inclined struts (49) are assembled at the connecting positions of the connecting rods (48) and the supporting rods (50); a cross bar is arranged at the top of the supporting bar (50), and a patch board (7) is arranged on the cross bar; the bottom support piece is provided with a generator (21), and the generator (21) is connected with the patch board (7) through a lead (10).

4. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 1 characterized in that: the positioning adjusting mechanism comprises fixing rings (38) fixedly arranged on steel frames (36) on two sides, threaded rods (39) are sleeved on the fixing rings (38) on the two sides, and nuts (27) are arranged at the joints of the fixing rings (38) and the threaded rods (39).

5. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 4 characterized in that: a steel frame bottom plate (35) is fixedly arranged at the bottom of the steel frame (36), and the inner side of the steel frame bottom plate (35) is arranged on the bottom plate (37); the steel frame bottom plate (35) comprises a connecting part (35-1) and an operating platform part (35-2), the connecting part (35-1) and the operating platform part (35-2) are fixedly connected and integrally formed, and the bottom of the steel frame (36) is fixedly arranged between the connecting part (35-1) and the operating platform part (35-2); the length of the connecting part (35-1) is 2 times of that of the operating platform part (35-2).

6. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 1 characterized in that: the rope winding device is characterized in that a limiting piece (43) is arranged at the upper end of the rope winding drum (30), a pulling rope (42) is fixedly arranged on the limiting piece (43), a hook (46) is connected to the pulling rope (42), and the hook (46) is used for hooking a round hole (41) in a side connecting piece (44) to fix the rope winding drum (30).

7. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 1 characterized in that: the length of the mechanical box (3) is 2 times of the width of the lower support sleeve (25).

8. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 1 characterized in that: the outer diameter of the spring (23) is smaller than the length of the spring diaphragm (24).

9. The soft rock tunnel regularization internal stay encircles and consolidates big deformation support of claim 5 characterized in that: the steel frame (36) is triangular.

Images