CN113982631A - Tunnel supporting structure and tunnel supporting method - Google Patents
Tunnel supporting structure and tunnel supporting method Download PDFInfo
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- CN113982631A CN113982631A CN202111276056.6A CN202111276056A CN113982631A CN 113982631 A CN113982631 A CN 113982631A CN 202111276056 A CN202111276056 A CN 202111276056A CN 113982631 A CN113982631 A CN 113982631A
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 210
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002775 capsule Substances 0.000 claims abstract description 48
- 239000012530 fluid Substances 0.000 claims abstract description 48
- 239000011435 rock Substances 0.000 claims abstract description 40
- 238000010276 construction Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/006—Lining anchored in the rock
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/155—Laggings made of strips, slats, slabs or sheet piles
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to the technical field of tunnel supporting, in particular to a tunnel supporting structure and a tunnel supporting method. The tunnel supporting structure comprises a lining bracket and a plurality of supporting capsule bodies; the lining support extends along the axis of the tunnel and is bent around the axis of the tunnel; the supporting bag bodies are sequentially connected to the outer peripheral surface of the lining bracket around the axis of the tunnel and along the axis of the tunnel; each supporting bag body is used for containing fluid or concrete, and each supporting bag body is used for being abutted against the inner peripheral wall of the tunnel after containing the fluid or the concrete. When fluid is contained in the supporting bag body, the supporting bag body can play a role of flexible supporting for the tunnel; when concrete is contained in the supporting bag body, the supporting bag body can play a role of rigid supporting for the tunnel; therefore, the tunnel supporting structure can release the deformation pressure of surrounding rocks, ensures the stability of the primary supporting structure, avoids the damage of the supporting structure and ensures the safety of construction operators.
Description
Technical Field
The invention relates to the technical field of tunnel supporting, in particular to a tunnel supporting structure and a tunnel supporting method.
Background
The traditional 'strong support hard top' support concept is that the support resistance is increased by continuously increasing the thickness and the rigidity of a primary support structure, the deformation of surrounding rocks is reduced, and the stability of the primary support structure is further ensured.
However, when a soft rock large deformation tunnel or a lag rock burst tunnel is encountered, the deformation pressure of surrounding rocks or the impact force of rock burst flying far exceeds the supporting resistance of the primary supporting structure. When the surrounding rock deformation pressure of the soft rock large-deformation tunnel is greater than the peak strength of the primary supporting structure, the primary supporting structure can yield, crush and even collapse integrally, and further serious safety accidents and economic losses are caused. Similarly, when a lagging rock burst tunnel is subjected to rock burst, the strong impact force of the splashed rock blocks can cause local damage and even casualties of the primary support structure. Replacement of a damaged and collapsed primary support structure also causes repeated investment of a large amount of support materials and construction cost, and delays construction period.
Disclosure of Invention
The invention aims to provide a tunnel supporting structure, which can release deformation pressure of surrounding rocks, reduce the structural internal force of a primary supporting structure, ensure the stability of the primary supporting structure, absorb the impact force of splashed rock blocks, avoid the damage of the supporting structure and ensure the safety of construction operators, for example.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a tunnel supporting structure, comprising a lining support and a plurality of supporting capsules;
the lining support extends along the axis of the tunnel and is bent around the axis of the tunnel; the supporting bag bodies are sequentially connected to the outer peripheral surface of the lining bracket around the axis of the tunnel and along the axis of the tunnel;
each supporting bag body is used for containing fluid or concrete, and each supporting bag body is used for being abutted against the inner peripheral wall of the tunnel after containing the fluid or the concrete.
In an alternative embodiment, each support capsule is provided with a feed end and a discharge end.
In an alternative embodiment, each support capsule is provided with a feed tube; the feed pipe of each supporting capsule penetrates through the lining support and extends into the inner side of the lining support.
In an alternative embodiment, the discharge end of each support bladder is provided with a pressure limiting valve.
In an optional embodiment, a filter screen is arranged at the discharge end of each supporting bag body, and the filter screen is used for allowing fluid to pass through and blocking concrete from leaking.
In an alternative embodiment, the feed tube is provided with a one-way valve for one-way communication from the feed tube to the support bladder.
In an optional embodiment, the tunnel supporting structure further comprises a plurality of circumferential conveying pipes, and the circumferential conveying pipes are connected with the lining support;
a plurality of hoop conveyer pipes are crooked around the axis in tunnel to the axis along the tunnel is arranged at the interval in proper order, and every hoop conveyer pipe all communicates with the inlet pipe that is located a plurality of supporting utricules of its periphery.
In an alternative embodiment, the tunnel supporting structure further comprises a longitudinal conveying pipe extending in the direction of the axis of the tunnel and communicating with the plurality of circumferential conveying pipes.
In an optional embodiment, the tunnel supporting structure further comprises a plurality of partition plates, the partition plates are sequentially connected with the lining support around the axis of the tunnel, and one partition plate is arranged between any two adjacent supporting capsules.
In a second aspect, the present invention provides a tunnel supporting method for implementing the tunnel supporting structure, where the tunnel supporting method includes:
installing a lining support and a plurality of supporting bag bodies in the tunnel;
adding fluid into the plurality of supporting bag bodies until the internal pressure of all the supporting bag bodies rises to a preset pressure;
and after the deformation of the surrounding rock is finished, adding concrete into the plurality of supporting capsule bodies.
The embodiment of the invention has the beneficial effects that:
the tunnel supporting structure comprises a lining bracket and a plurality of supporting capsule bodies; the supporting bag bodies are sequentially connected to the outer peripheral surface of the lining support around the axis of the tunnel, and can be abutted against the inner peripheral wall of the tunnel through expansion of the supporting bag bodies when the supporting bag bodies contain fluid or concrete, so that the supporting effect on the tunnel can be achieved, and in the supporting process, when the fluid is contained in the supporting bag bodies, the supporting bag bodies can achieve the flexible supporting effect on the tunnel; when concrete is contained in the supporting bag body, the supporting bag body can play a role of rigid supporting for the tunnel;
therefore, by adding fluid into the supporting air bag, the tunnel can be flexibly supported, and further the deformation pressure of the surrounding rock and the impact force of rock blocks can be absorbed, so that the stability of the surrounding rock can be maintained; and after the surrounding rock is stable, concrete can be added into the supporting air bag, and after the concrete is solidified, the rigid supporting effect can be achieved on the tunnel, so that the tunnel can be stably supported.
To sum up, this tunnel supporting construction can release country rock deformation pressure, reduces primary support structure's structure internal force to guarantee primary support structure's stability, can also absorb the impact force of the rock mass that splashes, avoid supporting construction's damage, guarantee construction operation personnel's safety.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a structure of a tunnel supporting structure in an embodiment of the present invention;
fig. 2 shows the structure of a supporting bladder in an embodiment of the present invention.
Icon: 100-tunnel supporting structure; 110-a liner support; 120-supporting the capsule; 121-a feed end; 122-a discharge end; 123-a feed pipe; 130-annular delivery pipe; 140-longitudinal conveying pipe; 111-partition.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, fig. 1 shows a structure of a tunnel supporting structure according to an embodiment of the present invention, which provides a tunnel supporting structure 100, the tunnel supporting structure 100 including an inner lining support 110 and a plurality of supporting bladders 120;
the liner support 110 extends along the axis of the tunnel and is curved about the axis of the tunnel; a plurality of supporting bladders 120 are sequentially connected to the outer circumferential surface of the lining bracket 110 around and along the axis of the tunnel;
each supporting bag 120 is used for containing fluid or concrete, and each supporting bag 120 is used for abutting against the inner peripheral wall of the tunnel after containing the fluid or the concrete. Also, the fluid contained in the supporting bladder 120 may be either gas or liquid.
It should be noted that, in the present embodiment, the lining support 110 may be made of one or more of steel pipe concrete, steel corrugated plate, basalt fiber concrete plate, steel frame, or grid steel frame. In addition, the supporting capsule 120 is made of a high-strength and high-toughness material, and the surface of the supporting capsule 120 may be further coated with a high-strength or high-toughness material, such as polyurea, which is corrosion-resistant and high-temperature resistant.
The working principle of the tunnel supporting structure 100 is as follows:
referring to fig. 1, the tunnel supporting structure 100 includes a lining support 110 and a plurality of supporting bladders 120; wherein, a plurality of supporting utricules 120 connect gradually in the outer peripheral face of inside lining support 110 around the axis in tunnel to when supporting utricule 120 and holding fluid or concrete, all can be with the internal perisporium butt in tunnel through the inflation of supporting utricule 120, and then can play the effect of strutting to the tunnel.
Because each supporting capsule 120 is used for containing fluid or concrete, when the fluid is contained in the supporting capsule 120, the supporting capsule 120 can play a role of flexible supporting for the tunnel; when concrete is contained in the supporting bag body 120, the supporting bag body 120 can play a role of rigid supporting for the tunnel; therefore, when the tunnel supporting structure 100 is used for primary supporting, each supporting bag body 120 can contain fluid, and in such a way, the supporting bag bodies 120 can absorb the deformation pressure of surrounding rocks and the impact force of rock masses through self deformation, so that the tunnel supporting structure can play a role of flexible supporting; when the surrounding rock of the tunnel is stable, concrete can be added into each supporting bag body 120, so that the rigid supporting effect on the tunnel can be achieved after the concrete is solidified;
therefore, the tunnel supporting structure 100 can flexibly support the tunnel in the primary supporting process, so that the deformation pressure of the surrounding rock of the tunnel and the impact force of rock blocks are absorbed, and the stability of the surrounding rock can be maintained; and after the surrounding rock is stable, concrete can be added into the supporting air bag, and after the concrete is solidified, the rigid supporting effect can be achieved on the tunnel, so that the tunnel can be stably supported.
Therefore, the tunnel supporting structure 100 can release the deformation pressure of surrounding rocks and reduce the structural internal force of the primary supporting structure, so that the stability of the primary supporting structure is ensured, the impact force of splashed rock blocks can be absorbed, the damage of the supporting structure is avoided, and the safety of construction operators is ensured.
Further, referring to fig. 1 and 2, fig. 2 shows the structure of the supporting capsule in the embodiment of the present invention, and in this embodiment, as can be seen from the above, when the tunnel supporting structure 100 is in different supporting stages, the materials contained therein are different, so as to facilitate the addition of fluid into the supporting capsule 120, and when the fluid is contained in the supporting capsule 120, concrete is added into the supporting capsule 120, so that each supporting capsule 120 has a feeding end 121 and a discharging end 122. Wherein, the feeding end 121 is used for facilitating the addition of fluid or concrete into the supporting capsule 120; the discharge end 122 is used for facilitating the discharge of the fluid during the process of adding the concrete into the supporting capsule 120 when the fluid is contained in the supporting capsule 120.
Specifically, since the supporting bladders 120 are located on the outer side of the lining support 110, each supporting bladder 120 is provided with a feeding pipe 123 to facilitate the feeding of fluid and concrete into the supporting bladder 120 and the discharging of the fluid; the feed tube 123 of each support bladder 120 extends through the lined stent 110 into the inside of the lined stent 110.
Further, referring to fig. 1 and 2, in the present embodiment, when the fluid is contained in the supporting bladder 120, the supporting bladder 120 can perform a flexible supporting function on the tunnel; moreover, when the tunnel supporting structure 100 is supporting flexibly, the supporting capsule 120 can absorb the deformation pressure of the surrounding rock and the impact force of the rock mass through the deformation of the supporting capsule 120, and in the process, the supporting capsule 120 can absorb the deformation pressure of the surrounding rock and the impact force of the rock mass to deform to a certain extent, and the internal pressure of the supporting capsule 120 can also increase, and in the process, in order to avoid the damage caused by the excessive internal pressure of the supporting capsule 120, the discharge end 122 of each supporting capsule 120 is provided with a pressure limiting valve; when the internal pressure of the supporting bag body 120 is increased to be greater than the pressure limiting pressure, the pressure can be released through the pressure limiting valve, that is, when the internal pressure is greater than the pressure limiting pressure, the discharge end 122 can be communicated with the outside through the pressure limiting valve, so that part of the fluid in the supporting bag body 120 flows out, the internal pressure is reduced until the internal pressure is less than the pressure limiting pressure, and the stable support of the supporting bag body 120 can be maintained.
It should be further noted that, by the arrangement of the pressure limiting valve, fluid can be added into the supporting bag body 120, so that in the process of raising the pressure in the supporting bag body 120 to support the tunnel, in order to avoid the deformation of the surrounding rock caused by the overlarge pressure of the supporting bag body 120 due to the overlarge addition amount of the fluid, when the pressure of the supporting bag body 120 is greater than the pressure limiting pressure due to the overlarge addition amount of the fluid, the discharge end 122 can be communicated with the outside through the pressure limiting valve, so that part of the fluid in the supporting bag body 120 flows out; moreover, in the process of adding concrete into the supporting bag body 120, because the bag body is filled with fluid, the pressure of the supporting bag body 120 is higher than the pressure limiting pressure when the concrete is added into the supporting bag body 120, and at the moment, the discharge end 122 can be communicated with the outside through the pressure limiting valve, so that the fluid in the supporting bag body 120 flows out.
In summary, in the present embodiment, by providing the pressure limiting valve, when the fluid or the concrete is added into the supporting bladder 120, the stability of the internal pressure of the supporting bladder 120 can be maintained, and the stability of the internal pressure of the supporting bladder 120 in the flexible supporting stage can also be maintained.
Further, in the process of adding concrete into the supporting capsule bodies 120, in order to prevent the concrete from leaking from the discharge ends 122 in the process of discharging the fluid from the discharge ends 122, the discharge end 122 of each supporting capsule body 120 is provided with a filter screen for the fluid to pass through and preventing the concrete from leaking; the purpose of such an arrangement is to prevent concrete from leaking out of the discharge end 122; thereby avoiding the situation that the discharge end 122 is blocked.
Referring to fig. 1 and 2, in the present embodiment, in order to prevent the backflow of the feeding pipe 123 when fluid or concrete is added into the supporting capsule 120, the feeding pipe 123 is provided with a one-way valve for one-way communication from the feeding pipe 123 to the supporting capsule 120.
Further, referring to fig. 1 and 2, in the present embodiment, in order to improve the efficiency of adding fluid and concrete, the tunnel supporting structure 100 further includes a plurality of circumferential conveying pipes 130, and the circumferential conveying pipes 130 are connected to the lining support 110; the plurality of circumferential conveying pipes 130 are bent around the axis of the tunnel and sequentially arranged at intervals along the axis of the tunnel, and each circumferential conveying pipe 130 is communicated with the feeding pipes 123 of the plurality of supporting bladders 120 located at the periphery thereof. Furthermore, the tunnel supporting structure 100 further includes a longitudinal transfer pipe 140, the longitudinal transfer pipe 140 extending in the axial direction of the tunnel and communicating with the plurality of circumferential transfer pipes 130. In such an arrangement, fluid or concrete is added into the longitudinal conveying pipe 140, so that the fluid or concrete can enter the plurality of annular conveying pipes 130 through the longitudinal conveying pipe 140 and can be conveyed to all the supporting capsules 120 through the annular conveying pipes 130, thereby improving the construction efficiency and shortening the construction period.
Further, referring to fig. 1 and 2, in the present embodiment, in order to position the supporting bladders 120, the tunnel supporting structure 100 further includes a plurality of partition plates 111, the partition plates 111 are sequentially connected to the lining stent 110 around the axis of the tunnel, and one partition plate 111 is disposed between any two adjacent supporting bladders 120. Therefore, by the arrangement mode, any two adjacent partition boards 111 can form an accommodating space for accommodating the supporting bag body 120, and further the deformation of the supporting bag body 120 can be limited by the mode, so that the supporting stability is improved.
Referring to fig. 1 and 2, based on the tunnel supporting structure 100, the present invention further provides a tunnel supporting method for implementing the tunnel supporting structure 100, the tunnel supporting method includes:
installing a lining stent 110 and a plurality of supporting bladders 120 in the tunnel;
adding fluid to the plurality of supporting bladders 120 until the internal pressure of all supporting bladders 120 rises to a preset pressure;
after the deformation of the surrounding rock is completed, concrete is added to the plurality of supporting capsules 120.
Specifically, based on the tunnel supporting structure 100, the tunnel supporting method includes the following steps:
installing a lining stent 110, a longitudinal delivery pipe 140, a plurality of circumferential delivery pipes 130 and a plurality of supporting bladders 120 in the tunnel;
adding fluid to all support bladders 120 through longitudinal ducts 140; in the present embodiment, a fluid is taken as an example of a pressurized gas; in other embodiments of the invention, the fluid may also be a liquid;
when the discharge end 122 begins to exhaust, it is indicated that the pressure in the supporting bladder 120 is greater than the pressure limiting pressure of the pressure limiting valve, and the addition of fluid can be stopped, at this time, the tunnel supporting structure 100 is in a flexible supporting stage;
subsequently, the pressure state of the supporting airbag and the exhaust state of the discharge end 122 can be detected, and if the discharge end 122 exhausts in the detection process, it indicates that the supporting capsule 120 starts to absorb the deformation pressure of the surrounding rock or the impact force of the rock mass, so that the internal pressure of the supporting capsule rises;
after the deformation of the surrounding rock is finished, and the discharge end 122 does not exhaust any more in the period of time, it is indicated that the surrounding rock tends to be stable, and the tunnel supporting structure 100 is in a stable supporting state; at this time, concrete may be added into the plurality of supporting capsules 120, and during the process of adding the concrete, the exhaust state of the discharge end 122 may be detected, when the discharge end 122 is exhausted, it indicates that the gas in the supporting capsules 120 is extruded by the concrete, and when the discharge end 122 is no longer exhausted, it indicates that the gas in the supporting capsules 120 is exhausted, and at this time, the addition of the concrete may be stopped;
after the concrete is solidified, the solidified concrete plays a role in rigid support for the tunnel.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A tunnel supporting construction, its characterized in that:
the tunnel supporting structure (100) comprises a lining stent (110) and a plurality of supporting bladders (120);
the lining support (110) extends along the axis of the tunnel and is curved around the axis of the tunnel; the supporting bladders (120) are sequentially connected to the outer peripheral surface of the lining bracket (110) around and along the axis of the tunnel;
each supporting bag body (120) is used for containing fluid or concrete, and each supporting bag body (120) is used for being abutted against the inner peripheral wall of the tunnel after containing the fluid or the concrete.
2. The tunnel support structure of claim 1, wherein:
each support capsule (120) is provided with a feed end (121) and a discharge end (122).
3. The tunnel support structure of claim 2, wherein:
each supporting capsule (120) is provided with a feeding pipe (123); the feeding pipe (123) of each supporting capsule (120) extends through the lining stent (110) into the inner side of the lining stent (110).
4. The tunnel support structure of claim 3, wherein:
the discharge end (122) of each supporting capsule (120) is provided with a pressure limiting valve.
5. The tunnel support structure of claim 3, wherein:
the discharge end (122) of each supporting capsule body (120) is provided with a filter screen, and the filter screen is used for allowing fluid to pass through and blocking concrete from leaking.
6. The tunnel support structure of claim 3, wherein:
the feeding pipe (123) is provided with a one-way valve which is communicated with the supporting capsule (120) from the feeding pipe (123) in a one-way mode.
7. The tunnel support structure of claim 3, wherein:
the tunnel supporting structure (100) further comprises a plurality of circumferential conveying pipes (130), and the circumferential conveying pipes (130) are connected with the lining support (110);
the plurality of annular conveying pipes (130) are bent around the axis of the tunnel and are sequentially arranged at intervals along the axis of the tunnel, and each annular conveying pipe (130) is communicated with the plurality of feeding pipes (123) of the supporting capsules (120) which are positioned at the periphery of the annular conveying pipe.
8. The tunnel support structure of claim 7, wherein:
the tunnel supporting structure (100) further comprises a longitudinal conveying pipe (140), wherein the longitudinal conveying pipe (140) extends along the axial direction of the tunnel and is communicated with the annular conveying pipes (130).
9. The tunnel support structure according to any one of claims 1 to 8, wherein:
the tunnel supporting structure (100) further comprises a plurality of partition plates (111), the partition plates (111) are sequentially connected with the lining support (110) around the axis of the tunnel, and one partition plate (111) is arranged between any two adjacent supporting capsules (120).
10. A tunnel supporting method for implementing the tunnel supporting structure according to any one of claims 1 to 9, wherein the tunnel supporting method comprises the steps of:
-installing the lining stent (110) and a plurality of said supporting bladders (120) inside the tunnel;
adding a fluid to a plurality of said supporting bladders (120) until the internal pressure of all said supporting bladders (120) rises to a preset pressure;
and after the surrounding rock deformation is finished, adding concrete into the supporting capsules (120).
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| CN202111276056.6A CN113982631B (en) | 2021-10-29 | 2021-10-29 | Tunnel supporting structure and tunnel supporting method |
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