CN114753866A - Ultrahigh ground temperature tunnel supporting structure - Google Patents
Ultrahigh ground temperature tunnel supporting structure Download PDFInfo
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- CN114753866A CN114753866A CN202210523413.2A CN202210523413A CN114753866A CN 114753866 A CN114753866 A CN 114753866A CN 202210523413 A CN202210523413 A CN 202210523413A CN 114753866 A CN114753866 A CN 114753866A
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- concrete layer
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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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 discloses an ultrahigh ground temperature tunnel supporting structure, which comprises tunnel surrounding rock and a supporting device arranged on the tunnel surrounding rock, wherein the supporting device comprises a first foam concrete layer, the first foam concrete layer is arranged on the inner wall of the tunnel surrounding rock, a protection mechanism is arranged on the inner wall of the first foam concrete layer, a second foam concrete layer is arranged on the bottom surface of the protection mechanism, a steel fiber concrete layer is arranged on the inner wall of the second foam concrete layer, a plurality of arc-shaped steel pipes are fixedly connected to the inner wall of the steel fiber concrete layer at equal intervals along the tunnel direction, the outer wall of the top of each arc-shaped steel pipe is abutted against the inner wall of the steel fiber concrete layer, water cooling mechanisms are communicated with two ends of each arc-shaped steel pipe, a plurality of axially-arranged supporting steel bars are fixedly connected to the outer wall of the bottom of each arc-shaped steel pipe at equal intervals, a secondary lining structure is arranged on the side surface of each supporting steel bar, and an air cooling mechanism is arranged between each secondary lining structure and the steel fiber concrete layer.
Description
Technical Field
The invention relates to the field of tunnel support, in particular to an ultrahigh ground temperature tunnel support structure.
Background
When the tunnel is buried too deeply or is influenced by underground hot water such as magma movable hot springs and the like, the temperature of surrounding rocks rises, so that the environmental temperature in the tunnel exceeds 28 ℃ during the tunnel construction operation, the construction safety and the personnel health are influenced, and the tunnel can be regarded as a high-rock (ground) temperature tunnel. Compare with ordinary rock temperature tunnel, various problems have appeared in high rock temperature tunnel supporting construction, for example: the anti-pulling force of the mortar anchor rod and the bonding strength of the sprayed concrete and surrounding rock are insufficient, the sprayed concrete generates cracks due to water evaporation at high rock temperature, the secondary lining concrete generates cracks due to temperature stress, and the like. To solve these problems, a tunnel supporting structure capable of withstanding high ground temperature must be provided. Therefore, the research on the heat insulation and radiation support structure of the ultra-high temperature tunnel is very important.
Therefore, there is a need for an ultra-high ground temperature tunnel supporting structure to solve the above problems.
Disclosure of Invention
The invention aims to provide an ultrahigh ground temperature tunnel supporting structure to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an ultrahigh ground temperature tunnel supporting structure, which comprises tunnel surrounding rocks and a supporting device arranged on the tunnel surrounding rocks, wherein the supporting device comprises a first foam concrete layer, the first foam concrete layer is arranged on the inner wall of the tunnel surrounding rocks, a protective mechanism is arranged on the inner wall of the first foam concrete layer, a second foam concrete layer is arranged on the bottom surface of the protective mechanism, a steel fiber concrete layer is arranged on the inner wall of the second foam concrete layer, a plurality of arc-shaped steel pipes are fixedly connected on the inner wall of the steel fiber concrete layer at equal intervals along the tunnel direction, the outer wall at the top of each arc-shaped steel pipe is abutted against the inner wall of the steel fiber concrete layer, two ends of each arc-shaped steel pipe are communicated with a water cooling mechanism, a plurality of axially arranged supporting steel bars are fixedly connected on the outer wall at equal intervals of the bottom of each arc-shaped steel pipe, and a secondary lining structure is arranged on the side surface of each supporting steel bar, and an air cooling mechanism is arranged between the secondary lining structure and the steel fiber concrete layer.
Preferably, protection machanism includes the protection network, the protection network outer wall with first foam concrete inner wall rigid coupling, the protection network inner wall with second foam concrete outer wall rigid coupling, run through on the protection network inner wall and set up a plurality of anchor subassemblies, the one end of anchor subassembly with protection network inner wall butt, the other end of anchor subassembly runs through first foam concrete layer with tunnel country rock rigid coupling.
Preferably, the anchor subassembly includes an anchor section of thick bamboo, the one end rigid coupling of an anchor section of thick bamboo has the butt plate, the butt plate with protection network inner wall butt, the other end of an anchor section of thick bamboo runs through in proper order first foam concrete layer with tunnel country rock, the terminal surface rigid coupling of an anchor section of thick bamboo has the toper piece, the transmission is connected with the reinforcement in an anchor section of thick bamboo.
Preferably, the reinforcement includes the dwang, the both ends of dwang are overlapped respectively and are equipped with first spacing ring and second spacing ring, first spacing ring with anchor section of thick bamboo bobbin base department inner wall passes through threaded connection, the second spacing ring outer wall with anchor section of thick bamboo bobbin base department inner wall passes through threaded connection, first spacing ring one end is provided with the toper structure, the butt hole that two slopes set up is seted up respectively to anchor section of thick bamboo outer wall both sides, two the downthehole sliding contact of butt has the butt pole, the one end of butt pole set up to with the arcwall of toper structure looks adaptation, the arcwall with toper structure sliding contact, the butt pole the other end with tunnel country rock butt.
Preferably, the end face of the rotating rod is provided with a slurry inlet hole communicated with the inner cavity of the anchoring cylinder, and the inner wall of the bottom of the abutting hole is provided with a slurry outlet hole.
Preferably, a waterproof layer is arranged between the steel fiber concrete layer and the second foam concrete layer.
Preferably, the secondary lining structure includes high temperature resistant waterproof sheet layer, high temperature resistant waterproof sheet layer pass through the screw with support the billet rigid coupling, the bottom surface rigid coupling of high temperature resistant waterproof sheet layer has extrusion molding polyphenyl board layer, the rigid coupling has reinforced concrete layer on the extrusion molding polyphenyl board layer inner wall, high temperature resistant waterproof sheet layer with form the ventilation chamber between the steel fiber concrete layer, the arc steel pipe with support the billet and be located the ventilation intracavity.
Preferably, the air cooling mechanism includes a plurality of air-supply lines and goes out the tuber pipe, and a plurality of the air-supply line with it is in to go out the tuber pipe equidistant setting respectively reinforced concrete layer bottom both sides, the air-supply line with the one end that goes out the tuber pipe runs through in proper order reinforced concrete layer, reinforced concrete layer and high temperature resistant waterproof sheet layer with the ventilation chamber intercommunication, the air-supply line with the other end that goes out the tuber pipe communicates air inlet pump and air outlet pump respectively.
Preferably, the water-cooling mechanism includes inlet tube and outlet pipe, the inlet tube with the outlet pipe circumference respectively sets up tunnel country rock bottom both sides, the inlet tube with the outlet pipe respectively with a plurality of the both ends intercommunication of arc steel pipe, the inlet tube with the one end of outlet pipe is respectively through pipeline and external water source intercommunication, with the intercommunication is provided with the water pump on the pipeline of inlet tube intercommunication.
The invention discloses the following technical effects: the first foam concrete layer and the second foam concrete layer have a heat insulation function, heat generated by tunnel surrounding rocks can be isolated primarily, the heat transmitted to the secondary lining structure and the tunnel is reduced, the working pressure of a subsequent cooling and heat dissipation mechanism is reduced, the overall heat dissipation effect is improved, the protection mechanism can play a protection effect on the tunnel surrounding rocks, the protection mechanism is embedded between the first foam concrete layer and the second foam concrete layer, the strength of the first foam concrete layer and the second foam concrete layer is enhanced, the protection mechanism is more stable, meanwhile, the protection mechanism is directly fixed in the tunnel surrounding rocks, the connection strength of the first foam concrete layer, the second foam concrete layer and the tunnel surrounding rocks can be further enhanced, the arc-shaped steel pipe can play a role in enhancing the supporting strength and can also play a role in heat dissipation when being matched with a water cooling mechanism, set up a plurality of support billets and strengthened the joint strength between a plurality of arc steel pipes, the whole effect of strutting of improvement, accomplish between the support billet of setting and the arc steel pipe and can produce the cavity of intercommunication after the welding, use with the forced air cooling mechanism is coordinated, can play the radiating effect of forced air cooling, and the secondary lining structure of setting further improves and struts the effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of an ultrahigh earth temperature tunnel supporting structure of the present invention;
FIG. 2 is an enlarged view of A1 in FIG. 1;
FIG. 3 is an enlarged view of A2 in FIG. 1;
FIG. 4 is an enlarged view of a portion A3 of FIG. 1;
wherein, 1, tunnel surrounding rock; 2. a first foamed concrete layer; 3. a second foamed concrete layer; 4. a steel fiber concrete layer; 5. an arc-shaped steel pipe; 6. supporting the steel bars; 7. a protective net; 8. an anchoring cylinder; 9. abutting against the plate; 10. a conical block; 11. rotating the rod; 12. a first limit ring; 13. a second stop collar; 14. abutting against the connecting rod; 15. a slurry inlet hole; 16. a pulp outlet hole; 17. a waterproof layer; 18. a high temperature resistant waterproof sheet layer; 19. extruding a polystyrene board layer; 20. a reinforced concrete layer; 21. a ventilation cavity; 22. an air inlet pipe; 23. an air outlet pipe; 24. an air intake pump; 25. an air outlet pump; 26. a water inlet pipe; 27. a water outlet pipe; 28. a pipeline; 29. an external water source; 30. and (4) a water pump.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Referring to fig. 1-4, the invention provides an ultra-high ground temperature tunnel supporting structure, which comprises a tunnel surrounding rock 1 and a supporting device arranged on the tunnel surrounding rock 1, wherein the supporting device comprises a first foam concrete layer 2, the first foam concrete layer 2 is arranged on the inner wall of the tunnel surrounding rock 1, a protective mechanism is arranged on the inner wall of the first foam concrete layer 2, a second foam concrete layer 3 is arranged on the bottom surface of the protective mechanism, a steel fiber concrete layer 4 is arranged on the inner wall of the second foam concrete layer 3, a plurality of arc steel pipes 5 are fixedly connected on the inner wall of the steel fiber concrete layer 4 at equal intervals along the tunnel direction, the top outer walls of the arc steel pipes 5 are abutted against the inner wall of the steel fiber concrete layer 4, water cooling mechanisms are communicated with two ends of the arc steel pipes 5, a plurality of axially arranged supporting steel bars 6 are fixedly connected on the bottom outer walls of the arc steel pipes 5 at equal intervals, a secondary lining structure is arranged on the side surfaces of the supporting steel bars 6, an air cooling mechanism is arranged between the secondary lining structure and the steel fiber concrete layer 4.
The first foam concrete layer 2 and the second foam concrete layer 3 have a heat insulation function, heat generated by the tunnel surrounding rock 1 can be isolated primarily, heat transmitted to the secondary lining structure and the tunnel is reduced, working pressure of a subsequent cooling and heat dissipation mechanism is reduced, the overall heat dissipation effect is improved, the protection mechanism can play a role in protecting the tunnel surrounding rock 1, the protection mechanism is embedded between the first foam concrete layer 2 and the second foam concrete layer 3, strength of the first foam concrete layer 2 and the second foam concrete layer 3 is enhanced, stability is better, the protection mechanism is directly fixed in the tunnel surrounding rock 1, connection strength of the first foam concrete layer 2, the second foam concrete layer 3 and the tunnel surrounding rock 1 can be further enhanced, the arc-shaped steel pipe 5 can play a role in enhancing the supporting strength, can also play and use with water cooling mechanism cooperation and play radiating effect, set up a plurality of support billet 6 and strengthened the joint strength between a plurality of arc steel pipe 5, the whole effect of strutting of improvement, accomplish the cavity that can produce the intercommunication after the welding between the support billet 6 that sets up and the arc steel pipe 5, cooperate the use with air-cooled mechanism, can play the radiating effect of forced air cooling, the secondary lining structure of setting further improves and struts the effect.
Further optimize the scheme, protection machanism includes protection network 7, and 7 outer walls of protection network and the 2 inner walls rigid couplings of first foam concrete layer, 7 inner walls of protection network and the 3 outer walls rigid couplings of second foam concrete layer run through on the 7 inner walls of protection network and set up a plurality of anchor subassemblies, the one end and the 7 inner walls butt of protection network of anchor subassembly, the other end of anchor subassembly runs through first foam concrete layer 2 and tunnel country rock 1 rigid couplings.
The protection network 7 that sets up is flexible structure, sets up it and can play first foam concrete layer 2 of reinforcing and the effect that improves the proof strength with 3 connectivity on second foam concrete layer between first foam concrete layer 2 and second foam concrete layer 3.
Further optimize the scheme, the anchor subassembly includes an anchor section of thick bamboo 8, and the one end rigid coupling of an anchor section of thick bamboo 8 has butt board 9, butt board 9 and 7 inner wall butts of protection network, and first foam concrete layer 2 and tunnel country rock 1 are run through in proper order to the other end of an anchor section of thick bamboo 8, and the terminal surface rigid coupling of an anchor section of thick bamboo 8 has toper piece 10, and the transmission is connected with the reinforcement in an anchor section of thick bamboo 8.
The conical block 10 is convenient for the anchoring cylinder 8 to be driven into the abutting plate 9 arranged in the tunnel surrounding rock 1, so that the protective net 7 can be fixed, and the integral connectivity is enhanced.
Further optimize the scheme, the reinforcement includes dwang 11, the both ends of dwang 11 are overlapped respectively and are equipped with first spacing ring 12 and second spacing ring 13, first spacing ring 12 passes through threaded connection with 8 bobbin base department inner walls of an anchor section of thick bamboo, threaded connection is passed through with 8 bobbin base department inner walls of an anchor section of thick bamboo department to the 13 outer wall of second spacing ring, 12 one end of first spacing ring is provided with the toper structure, the butt hole that two slopes set up is seted up respectively to 8 outer wall both sides of an anchor section of thick bamboo, two butt downthehole sliding contact have butt pole 14, butt pole 14's one end sets up the arcwall into with toper structure looks adaptation, arcwall and toper structure sliding contact, butt pole 14's the other end and 1 butt of tunnel country rock.
The butt-joint pole 14 of setting sets up for the slope, and after accomplishing the anchor with tunnel country rock 1, drive dwang 11 can push out butt-joint pole 14 and make it form the structure that the barb is the same, strengthens the joint strength of a section of thick bamboo 8 and tunnel country rock 1.
Further optimize the scheme, the terminal surface of dwang 11 has seted up the thick liquid hole 15 that advances with 8 inner chambers of anchor section of thick bamboo intercommunication, and the butt hole bottom inner wall has seted up out thick liquid hole 16.
After the positioning and installation of the anchoring cylinder 8 and the abutting rod 14 are completed, mortar can be poured into the anchoring cylinder 8 through the mortar inlet hole 15, and the connection strength between the tunnel surrounding rock 1 and the anchoring cylinder 8 and the abutting rod 14 can be enhanced after the poured mortar flows out of the mortar outlet hole 16.
In a further optimized scheme, a waterproof layer 17 is arranged between the steel fiber concrete layer 4 and the second foam concrete layer 3.
The waterproof layer 17 can play a waterproof role.
Further optimization scheme, the secondary lining structure includes high temperature resistant waterproof sheet layer 18, high temperature resistant waterproof sheet layer 18 passes through screw and support billet 6 rigid coupling, the bottom surface rigid coupling of high temperature resistant waterproof sheet layer 18 has extruded polystyrene board layer 19, the rigid coupling has reinforced concrete layer 20 on the 19 inner walls of extruded polystyrene board layer, form ventilation chamber 21 between high temperature resistant waterproof sheet layer 18 and the steel fiber concrete layer 4, arc steel pipe 5 is located ventilation chamber 21 with support billet 6.
The high temperature resistant waterproof sheet layer 18 and the extrusion molding polyphenyl plate layer 19 that set up can further play waterproof thermal-insulated effect, and the reinforced concrete layer 20 that sets up can play and strut the effect.
Further optimize the scheme, air-cooled mechanism includes a plurality of air-supply lines 22 and goes out tuber pipe 23, and a plurality of air-supply lines 22 and play tuber pipe 23 equidistant setting respectively are in reinforced concrete layer 20 bottom both sides, and the one end of air-supply line 22 and play tuber pipe 23 runs through reinforced concrete layer 20, reinforced concrete layer 20 and high temperature resistant waterproof sheet layer 18 and the intercommunication of ventilation chamber 21 in proper order, and the other end of air-supply line 22 and play tuber pipe 23 communicates respectively has air inlet pump 24 and air-out pump 25.
Further optimize the scheme, water cooling mechanism includes inlet tube 26 and outlet pipe 27, and inlet tube 26 and outlet pipe 27 circumference respectively set up in 1 bottom both sides in tunnel country rock, and inlet tube 26 and outlet pipe 27 communicate with the both ends of a plurality of arc steel pipes 5 respectively, and the one end of inlet tube 26 and outlet pipe 27 communicates with external water source 29 through pipeline 28 respectively, and the intercommunication is provided with water pump 30 on the pipeline 28 with inlet tube 26 intercommunication.
The water cooling mechanism and the air cooling mechanism are matched with each other for use, so that the heat dissipation effect is further improved.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (9)
1. The utility model provides an ultrahigh ground temperature tunnel supporting construction, includes tunnel country rock (1) and sets up the supporting device on tunnel country rock (1), its characterized in that: the supporting device comprises a first foam concrete layer (2), the first foam concrete layer (2) is arranged on the inner wall of the tunnel surrounding rock (1), a protective mechanism is arranged on the inner wall of the first foam concrete layer (2), a second foam concrete layer (3) is arranged on the bottom surface of the protective mechanism, a steel fiber concrete layer (4) is arranged on the inner wall of the second foam concrete layer (3), a plurality of arc steel pipes (5) are fixedly connected on the inner wall of the steel fiber concrete layer (4) at equal intervals along the tunnel direction, the outer wall of the top of each arc steel pipe (5) is abutted to the inner wall of the steel fiber concrete layer (4), the two ends of each arc steel pipe (5) are communicated with a water cooling mechanism, the outer wall of the bottom of each arc steel pipe (5) is fixedly connected with a plurality of supporting steel bars (6) which are axially arranged, and the side surfaces of the supporting steel bars (6) are provided with a secondary lining structure, and an air cooling mechanism is arranged between the secondary lining structure and the steel fiber concrete layer (4).
2. The ultra-high ground temperature tunnel supporting structure of claim 1, wherein: protection machanism includes protection network (7), protection network (7) outer wall with first foam concrete layer (2) inner wall rigid coupling, protection network (7) inner wall with second foam concrete layer (3) outer wall rigid coupling, run through on protection network (7) inner wall and set up a plurality of anchor subassemblies, the one end of anchor subassembly with protection network (7) inner wall butt, the other end of anchor subassembly runs through first foam concrete layer (2) with tunnel country rock (1) rigid coupling.
3. The ultra-high ground temperature tunnel supporting structure of claim 2, wherein: the anchor subassembly includes an anchor section of thick bamboo (8), the one end rigid coupling of an anchor section of thick bamboo (8) has butt plate (9), butt plate (9) with protection network (7) inner wall butt, the other end of an anchor section of thick bamboo (8) runs through in proper order first foam concrete layer (2) with tunnel country rock (1), the terminal surface rigid coupling of an anchor section of thick bamboo (8) has toper piece (10), the transmission is connected with the reinforcement in an anchor section of thick bamboo (8).
4. The ultra-high ground temperature tunnel supporting structure according to claim 3, wherein: the reinforcement includes dwang (11), the both ends of dwang (11) are overlapped respectively and are equipped with first spacing ring (12) and second spacing ring (13), first spacing ring (12) with an anchor section of thick bamboo (8) bobbin base department inner wall passes through threaded connection, second spacing ring (13) outer wall with an anchor section of thick bamboo (8) bobbin base department inner wall passes through threaded connection, first spacing ring (12) one end is provided with the toper structure, the butt joint hole that two slopes set up is seted up respectively to an anchor section of thick bamboo (8) outer wall both sides, two the downthehole sliding contact of butt joint has butt joint pole (14), the one end of butt joint pole (14) set up into with the arcwall face of toper structure looks adaptation, the arcwall face with toper structure sliding contact, the other end of butt joint pole (14) with tunnel country rock (1) butt.
5. The ultra-high ground temperature tunnel supporting structure of claim 4, wherein: the terminal surface of dwang (11) seted up with advance thick liquid hole (15) of an anchor section of thick bamboo (8) inner chamber intercommunication, butt hole bottom inner wall has seted up out thick liquid hole (16).
6. The ultra-high ground temperature tunnel supporting structure of claim 1, wherein: and a waterproof layer (17) is arranged between the steel fiber concrete layer (4) and the second foam concrete layer (3).
7. The ultra-high ground temperature tunnel supporting structure of claim 1, wherein: the secondary lining structure includes high temperature resistant waterproof sheet layer (18), high temperature resistant waterproof sheet layer (18) pass through the screw with support billet (6) rigid coupling, the bottom surface rigid coupling of high temperature resistant waterproof sheet layer (18) has extrusion molding polyphenyl board layer (19), the rigid coupling has reinforced concrete layer (20) on extrusion molding polyphenyl board layer (19) inner wall, high temperature resistant waterproof sheet layer (18) with form between steel fiber concrete layer (4) and ventilate chamber (21), arc steel pipe (5) with support billet (6) and be located in ventilation chamber (21).
8. The ultra-high ground temperature tunnel supporting structure of claim 7, wherein: air-cooled mechanism includes a plurality of air-supply lines (22) and goes out tuber pipe (23), and is a plurality of air-supply line (22) with it is in to go out tuber pipe (23) equidistant setting respectively reinforced concrete layer (20) bottom both sides, air-supply line (22) with the one end that goes out tuber pipe (23) runs through in proper order reinforced concrete layer (20), reinforced concrete layer (20) and high temperature resistant waterproof sheet layer (18) with ventilation chamber (21) intercommunication, air-supply line (22) with the other end that goes out tuber pipe (23) communicates respectively has air intake pump (24) and air-out pump (25).
9. The ultra-high geothermal tunnel supporting structure of claim 7, wherein: water-cooling mechanism includes inlet tube (26) and outlet pipe (27), inlet tube (26) with outlet pipe (27) circumference respectively sets up tunnel country rock (1) bottom both sides, inlet tube (26) with outlet pipe (27) respectively with a plurality of the both ends intercommunication of arc steel pipe (5), inlet tube (26) with the one end of outlet pipe (27) is respectively through pipeline (28) and external water source (29) intercommunication, with the intercommunication is provided with water pump (30) on pipeline (28) of inlet tube (26) intercommunication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210523413.2A CN114753866B (en) | 2022-05-13 | 2022-05-13 | Ultra-high ground temperature tunnel supporting structure |
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| CN202210523413.2A CN114753866B (en) | 2022-05-13 | 2022-05-13 | Ultra-high ground temperature tunnel supporting structure |
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| CN114753866B CN114753866B (en) | 2023-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116927853A (en) * | 2023-07-19 | 2023-10-24 | 安徽理工大学 | High-ground-temperature tunnel cooling system and method |
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| CN204511468U (en) * | 2015-03-02 | 2015-07-29 | 成都理工大学 | A kind of High-geotemperature tunnel heat insulation and dissipation liner structure |
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| CN215907860U (en) * | 2020-08-24 | 2022-02-25 | 西南交通大学 | High ground temperature tunnel cooling structure |
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