CN215979439U

CN215979439U - Assembled temporary supporting structure for muddy rock water-rich tunnel

Info

Publication number: CN215979439U
Application number: CN202220198001.1U
Authority: CN
Inventors: 彭红岩; 郑玉强; 唐锐; 高非; 叶名田; 邹晨巍; 苏鑫鑫; 付禹; 姬庆; 包龙生
Original assignee: Seventh Engineering Co Ltd of China Railway No 9 Group Co Ltd
Current assignee: Seventh Engineering Co Ltd of China Railway No 9 Group Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-03-08
Anticipated expiration: 2032-01-25

Abstract

The utility model relates to a tunnel construction technology, in particular to an assembled temporary supporting structure of a muddy rock water-rich tunnel, which comprises a supporting main body and a base, wherein the supporting main body is of an arch structure, two arch feet of the supporting main body are respectively hinged with a lifting column, and the lifting columns longitudinally extend along the arch feet of the supporting main body; be equipped with two bases in the bottom of strutting the main part, two bases correspond two lift posts respectively, be equipped with longitudinal extension's guide cylinder on the base, the lift post slides the inner chamber of assembly at the guide cylinder, be equipped with elevating gear in the bottom of inner chamber, along inner chamber longitudinal sliding with the drive lift post, it is domes to strut the main part, can support the tunnel inner wall, the base utilizes guide cylinder and lift post sliding connection, be convenient for through the ascending jack-up of elevating gear, and then will strut the main part and upwards jack-up, be convenient for adapt to not high tunnel structure.

Description

Assembled temporary supporting structure for muddy rock water-rich tunnel

Technical Field

The utility model belongs to the technical field of tunnel construction, and particularly relates to an assembled temporary supporting structure of a argillite water-rich tunnel.

Background

In recent years, in underground projects such as railway tunnels, highway tunnels, urban subways and the like which are being built and planned, soft rock tunnels (also called weak surrounding rock tunnels) account for a high proportion, the length and span of the tunnels are increasingly large, and a large number of tunnels are still in special geology, such as loess with a large pore structure, fully-weathered granite rich in water, fracture zones rich in water, debris flow strata, sandy gravel strata, loose accumulation bodies and the like. It is very difficult to construct large-section and large-span tunnels in the strata, and collapse phenomenon often occurs in the construction process. The fault fracture zone refers to a fracture zone which is formed by relatively moving two disks of a fault and mutually squeezing the two disks to fracture nearby rocks to form a fracture zone which is approximately parallel to a fault surface. The construction difficulty of the weak surrounding rock tunnel penetrating through the fault fracture zone is very high, particularly when the stratum is a water-rich argillaceous rock stratum, the penetrated fault fracture zone is a water-rich fault zone, rock mass fracture provides more favorable conditions for occurrence and enrichment of underground water, and sudden surge phenomena such as tunnel debris flow, debris flow and landslide are very easy to occur, so that extremely strong damage is brought to tunnel engineering, and the construction difficulty is very high. Therefore, when the tunnel passes through the fault and is rich in underground water, most rock masses are clastic rocks, and under the action of high water pressure, the tunnel face is very easy to burst geological disasters such as water burst, mud burst and the like, so that the construction risk is high, the construction difficulty is high, and the construction progress is slow. Therefore, a temporary supporting device is needed to be adopted during tunnel construction to prevent collapse and water seepage and protect constructors.

However, the existing tunnel supporting structure is inconvenient to assemble and disassemble, the assembling process is complex, the tunnel structure adapting to different inner diameters and heights is inconvenient to adjust, and the waterproof and drainage effects on the argillaceous rock water-rich geology are poor.

Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide an assembled temporary supporting structure for a muddy rock water-rich tunnel.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model provides a muddy rock rich water tunnel assembled temporary support structure, includes:

the supporting body is of an arch structure, and lifting columns are respectively arranged at two arch feet of the supporting body;

the lifting column is assembled in a sliding mode in an inner cavity of the guide cylinder, and a lifting device is arranged at the bottom of the inner cavity to drive the lifting column to longitudinally slide along the inner cavity.

Preferably, the support main body is formed by hinging two equal parts, and a telescopic mechanism is arranged between the two bases to adjust the distance between the two bases;

correspondingly, the lifting column is hinged with the arch foot of the supporting main body.

Preferably, the lower edges of the hinged ends of the two equal parts are correspondingly extended with hinged plates, and the hinged ends are hinged with the two hinged plates through hinge shafts;

two the last edge of the hinged end of halving piece is corresponding to stretch out spacing piece, two contradict each other after the interval increase of base, with to the span of strutting the main part limits.

Preferably, the telescopic mechanism comprises a groove plate and a telescopic plate, wherein the middle of the groove plate is provided with a sliding groove extending along the length direction of the groove plate, the two groove plates are respectively connected to the two bases, and two ends of the telescopic plate are respectively assembled in the two sliding grooves in a sliding manner.

Preferably, a hanging plate corresponding to the groove plate is arranged on the side portion of the base, the end portion of the hanging plate is bent to form an L-shaped structure, a hanging end is arranged at one end, close to the hanging plate, of the groove plate, and a hanging groove corresponding to the hanging plate is formed in the hanging end.

Preferably, one end, far away from the bend, of the hanging plate is correspondingly hinged to the base.

Preferably, the part of the telescopic plate extending into the sliding chute is provided with a plurality of positioning holes, the positioning holes are uniformly distributed in the length direction of the telescopic plate, the groove plate is provided with a positioning bolt in a threaded manner, and the positioning bolt penetrates through the groove plate and then extends into the positioning holes.

Preferably, the main body of the support main body is a structural steel frame layer, and a first concrete lining and a waterproof layer are sequentially arranged on the outer side of the structural steel frame layer.

Preferably, a second concrete lining and a guard plate layer are sequentially arranged on the inner side of the structural steel frame layer, a plurality of guide holes are formed in one side, corresponding to the structural steel frame layer, of the guard plate layer, the guide holes are intersected on the same confluence groove, and the confluence groove extends to the arch foot of the supporting main body.

Preferably, two one sides of the bases far away from each other are respectively provided with a fixing block, the fixing blocks are provided with through holes, and connecting bolts penetrate through the through holes and then are connected to the inner wall of the tunnel.

Has the advantages that: support the tunnel through strutting the main part, strut the main part and be domes, can support the tunnel inner wall, the base utilizes guide cylinder and lift post sliding connection, is convenient for through elevating gear jack-up, and then will strut the main part jack-up that makes progress, be convenient for adapt to not the tunnel structure of co-altitude.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. Wherein:

fig. 1 is a front view of a supporting structure according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a point a in fig. 1.

Fig. 3 is a schematic structural diagram at B in fig. 1.

Fig. 4 is a schematic structural diagram at C in fig. 1.

In the figure: 1. a support main body; 2. a lifting column; 3. a limiting line; 4. a jack; 5. a guide cylinder; 6. an inner cavity; 7. a fixed block; 8. a connecting bolt; 9. a base; 10. a hanging plate; 11. a hanging end; 12. a hanging groove; 13. a groove plate; 14. a retractable plate; 15. positioning the screw hole; 16. positioning holes; 17. positioning the bolt; 18. a hinge shaft; 19. a hinge plate; 20. a limiting block; 21. a waterproof layer; 22. a first concrete lining; 23. a structural steel frame layer; 24. second concrete lining; 25. a guard board layer; 26. a flow guide hole; 27. and the confluence groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1-4, an assembled temporary supporting structure for a muddy rock water-rich tunnel comprises a supporting main body 1 and a base 9, wherein the supporting main body 1 is of an arch structure, two arch feet of the supporting main body 1 are respectively hinged with a lifting column 2, and the lifting column 2 longitudinally extends along the arch feet of the supporting main body 1; be equipped with two bases 9 in the bottom of strutting main part 1, two bases 9 correspond two lift post 2 respectively, be equipped with longitudinal extension's guide cylinder 5 on base 9, lift post 2 slides and assembles inner chamber 6 at guide cylinder 5, be equipped with elevating gear in the bottom of inner chamber 6, in order to drive lift post 2 along inner chamber 6 longitudinal sliding, when using, support the tunnel through strutting main part 1, it is domes to strut main part 1, can support the tunnel inner wall, base 9 utilizes guide cylinder 5 and lift post 2 sliding connection, be convenient for through elevating gear upwards jack-up, and then will strut main part 1 and upwards jack-up, be convenient for adapt to the not tunnel structure of co-altitude. In this embodiment, the inner cavity 6 of the guide cylinder 5 is matched with the lifting column 2, the limit line 3 is arranged at the middle lower part of the lifting column 2, and after the limit line 3 extends out of the guide cylinder 5, the lifting column stops being driven upwards to limit the highest position of the lifting column 2, so that the falling of the lifting column 2 caused by excessive lifting is avoided. The lifting device is a hand-press jack 4, and a handle of the jack 4 is positioned on the outer side of the guide cylinder 5, so that pressurization and pressure relief are facilitated.

In another alternative embodiment, the supporting body 1 is formed by two equal parts hinged together, and a telescopic mechanism is arranged between the two bases 9 to adjust the distance between the two bases 9. Two equant pieces of supporting main part 1 can rotate around the pin joint, adjust telescopic machanism and change the span of supporting main part 1, can adapt to the tunnel of different internal diameters, and the hinge 18 of two equant pieces can be dismantled, and this supporting construction of being convenient for assembles and dismantles. Correspondingly, the lifting columns 2 are hinged with the arch feet of the supporting main body 1, and the lifting columns 2 are always longitudinally distributed to slide along the guide cylinder 5 in the process of adjusting the span of the supporting main body 1.

In another alternative embodiment, hinged plates 19 correspondingly extend from the lower edges of the hinged ends of the two equal parts, and the hinged plates 19 are hinged through hinge shafts 18, so that the supporting body 1 forms an arch bridge supporting structure and plays a role in supporting and protecting the argillaceous rock geology; the upper edge of the hinged end of two halving pieces is correspondingly extended with a limiting block 20, a gap is arranged between the two limiting blocks 20, the two limiting blocks are mutually abutted after the distance between the two bases 9 is increased, so that the span of the supporting body 1 is limited, the maximum span of the supporting body 1 is limited, and meanwhile, when the upper part of the supporting body 1 is pressed to be inwards and downwards slightly deformed, the supporting blocks are mutually contacted, the opposite-top two-side opposite-top state is formed, and the supporting force outside the supporting body 1 is strengthened. Stopper 20 may be integrally formed with the halves, or welded, or removably secured by screws.

In another alternative embodiment, the telescopic mechanism comprises a groove plate 13 and a telescopic plate 14, a sliding groove extending along the length direction of the groove plate 13 is formed in the middle of the groove plate 13, the two groove plates 13 are respectively connected to the two bases 9, two ends of the telescopic plate 14 are respectively slidably assembled in the two sliding grooves, the relative positions of the two bases 9 are limited through the groove plate 13 and the telescopic plate 14, and the telescopic plate 14 slides in the sliding groove when the two bases 9 are far away from or close to each other.

In this embodiment, the opposite ends of the two slot plates 13 are both hollow structures, the sliding slot is an inner cavity at the hollow end of the slot plate 13, wherein the expansion plate 14 extends into the inner cavity and slides, the cross section of the slot plate 13 is square, the cross section of the sliding slot is square, and the expansion plate 14 is matched with the cross section of the inner cavity of the slot plate 13.

In another alternative embodiment, a hanging plate 10 corresponding to a groove plate 13 is arranged on the side of the base 9, the end of the hanging plate 10 is bent to form an L-shaped structure, one end of the groove plate 13 close to the hanging plate 10 is a hanging end 11, and the hanging end 11 is provided with a hanging groove 12 corresponding to the hanging plate 10. The connection is realized through the hanging plate 10 and the groove plate 13, so that the bottom of the support body 1 forms a stable support, and the telescopic plate 14 is connected through the sliding inside the groove plate 13.

In this embodiment, the end of the hook plate 10 away from the bend is correspondingly hinged on the base 9, the hook groove 12 is located on the upper end face of the groove plate 13, the end of the hook plate 10 is bent downward, and the hook plate 10 rotates on the longitudinal plane, so that the bent end is clamped into the hook groove 12.

In another alternative embodiment, the part of the telescopic plate 14 extending into the sliding chute is provided with a plurality of positioning holes 14, the plurality of positioning holes 14 are uniformly distributed in the length direction of the telescopic plate 14, the groove plate 13 is provided with positioning bolts 17 in a threaded manner, the positioning bolts 17 penetrate through the groove plate 13 and then extend into the positioning holes 14, and after the positioning bolts 17 are inserted, the telescopic plate 14 can be limited, so that the distance between the two brackets of the base 9 is kept fixed. The groove plate 13 is provided with positioning screw holes 15 corresponding to the positioning bolts 17.

In another embodiment, the main body of the supporting body 1 is a structural steel frame layer 23, and the first concrete lining 22 and the waterproof layer 21 are sequentially arranged on the outer side of the structural steel frame layer 23.

Second concrete lining 24 and backplate layer 25 have set gradually in the inboard on structural steel frame layer 23, are equipped with a plurality of water conservancy diversion holes 26 on backplate layer 25 corresponds structural steel frame layer 23 one side, and a plurality of water conservancy diversion holes 26 intersect on same confluence groove 17, and confluence groove 17 is inside to extend to the hunch foot department of strutting main part 1 at backplate layer 25 to extend to the lateral surface of strutting main part 1. The waterproof performance of the supporting main body 1 is enhanced by using the waterproof layer 21, the first concrete lining 22 and the second concrete lining 24 which are included by the supporting main body 1, the structural strength of the supporting main body 1 is enhanced through the structural steel frame layer 23 and the guard plate layer 25, and the seepage water is guided and drained to the lower end (particularly to an arch springing position) of the supporting main body 1 through the diversion holes 26 and the confluence groove 17 in the guard plate layer 25 under the condition of seepage water, so that the problem of poor waterproof drainage effect of muddy rock water-rich geology is effectively solved; the first and second

concrete linings

22, 24 are both provided as a quick setting concrete material blended with a waterproof glue.

In another optional embodiment, the two bases 9 are provided with a fixing block 7 on one side away from each other, the fixing block 7 is provided with a through hole, the connecting bolt 8 passes through the through hole and then is connected to the inner wall of the tunnel, and the connecting bolt 8 is preferably an expansion bolt and can fix the bases 9 to ensure the stability of the supporting structure.

In an alternative embodiment, the lower end of the base 9 is provided with rollers to facilitate movement of the support structure along the tunnel in the tunnel. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.

The above description is only exemplary of the utility model and should not be taken as limiting the utility model, as any modification, equivalent replacement, or improvement made within the spirit and principle of the utility model is intended to be covered by the appended claims.

Claims

1. The utility model provides a muddy rock rich water tunnel assembled temporary support structure which characterized in that includes:

the lifting column is slidably assembled in an inner cavity of the guide cylinder, and a lifting device is arranged at the bottom of the inner cavity.

2. The assembled temporary supporting structure of the argillite water-rich tunnel as recited in claim 1, wherein the supporting body is formed by hinging two equal parts, a telescopic mechanism is arranged between two bases, and the lifting column is hinged with the arch foot of the supporting body.

3. The fabricated temporary supporting structure of the mudstone water-rich tunnel according to claim 2, wherein hinged plates are correspondingly extended from the lower edges of the hinged ends of the two halving pieces, and are hinged with the two hinged plates through hinge shafts;

two the upper edge of the hinged end of halving piece is correspondingly stretched out and is limited by a stopper, two the interval of base is increased and then is mutually contradicted.

4. The assembled temporary supporting structure of the argillite water-rich tunnel as recited in claim 2, wherein said telescoping mechanism comprises a slotted plate and a telescoping plate, a sliding groove extending along the length direction of the slotted plate is arranged in the middle of the slotted plate, the two slotted plates are respectively connected to the two bases, and two ends of the telescoping plate are respectively slidably assembled in the two sliding grooves.

5. The mudstone water-rich tunnel assembled temporary supporting structure of claim 4, wherein a hanging plate corresponding to the groove plate is arranged on the side of the base, the end of the hanging plate is bent to form an L-shaped structure, one end of the groove plate close to the hanging plate is a hanging end, and the hanging end is provided with a hanging groove corresponding to the hanging plate.

6. The assembled temporary supporting structure for the argillite water-rich tunnel as recited in claim 5, wherein one end of the hanging plate, which is far away from the bend, is correspondingly hinged on the base.

7. The assembled temporary supporting structure for the mudstone water-rich tunnel according to claim 4, wherein a plurality of positioning holes are formed in the part of the expansion plate, which extends into the chute, and are uniformly distributed in the length direction of the expansion plate, and positioning bolts are screwed on the groove plate and extend into the positioning holes after penetrating through the groove plate.

8. The assembled temporary supporting structure of the mudstone water-rich tunnel according to claim 1, wherein the main body of the supporting main body is a structural steel frame layer, and a first concrete lining and a waterproof layer are sequentially arranged on the outer side of the structural steel frame layer.

9. The assembled temporary supporting structure for the mudstone water-rich tunnel according to claim 8, wherein a second concrete lining and a protective plate layer are sequentially arranged on the inner side of the structural steel frame layer, a plurality of flow guide holes are formed in one side of the protective plate layer corresponding to the structural steel frame layer, the flow guide holes are intersected on the same confluence groove, and the confluence groove extends to the arch springing of the supporting body.

10. The assembled temporary supporting structure of the mudstone water-rich tunnel according to claim 1, wherein fixing blocks are respectively arranged on the sides of the two bases away from each other, through holes are arranged on the fixing blocks, and connecting bolts are connected to the inner wall of the tunnel after penetrating through the through holes.