CN111140266A - Tunnel supporting structure suitable for large deformation of soft rock and construction method thereof - Google Patents
Tunnel supporting structure suitable for large deformation of soft rock and construction method thereof Download PDFInfo
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- CN111140266A CN111140266A CN202010148248.8A CN202010148248A CN111140266A CN 111140266 A CN111140266 A CN 111140266A CN 202010148248 A CN202010148248 A CN 202010148248A CN 111140266 A CN111140266 A CN 111140266A
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- 239000011435 rock Substances 0.000 title claims abstract description 74
- 238000010276 construction Methods 0.000 title claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 99
- 239000010959 steel Substances 0.000 claims abstract description 99
- 239000007921 spray Substances 0.000 claims abstract description 12
- 239000011378 shotcrete Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- E21D11/14—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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- 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
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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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel supporting structure suitable for large deformation of soft rock, which comprises a steel frame supporting structure and an initial spray anchor support paved on the inner wall of the tunnel with large deformation of soft rock, wherein a plurality of foot-locking anchor rods are arranged on the initial spray anchor support, the steel frame supporting structure comprises steel corrugated plates, a high-strength spring and an annular support, the steel corrugated plates are connected with the foot-locking anchor rods, one end of the high-strength spring is connected with the steel corrugated plates, the other end of the high-strength spring is connected with the annular support, and the axial direction of the high-strength spring is the same as the radial direction of. On one hand, the invention can reduce the damage of the tunnel surrounding rock large deformation to the structure by releasing a certain surrounding rock deformation amount, and effectively improve the deformation resistance and the structural stability of the tunnel structure. On the other hand, the structure with higher rigidity can strongly resist the deformation of the surrounding rock after the deformation of the surrounding rock is released to a certain degree, so that the supporting purpose of combining rigidity and flexibility is achieved.
Description
Technical Field
The invention relates to the field of tunnel engineering, in particular to a tunnel supporting structure suitable for large deformation of soft rock and a construction method thereof.
Background
With the rapid development of infrastructure construction in China in recent years, tunnel engineering built in the engineering of constructing highways, railways, water conservancy and the like is increased. The complexity and risk in the tunnel engineering construction process put higher requirements on the safety and practicability of the tunnel engineering lining structure.
The large deformation of the tunnel is characterized in that after the tunnel excavation is finished, the deformation phenomenon of surrounding rocks has progressive and time effects. For the support measures with large deformation, the construction is troublesome no matter the support before excavation or the reinforcement measures after the excavation is finished, the working procedures are more, and the consumption of construction materials is large. At present, two solutions for large deformation of the tunnel are provided in the engineering, one is to adopt a supporting structure with higher rigidity to strongly resist the deformation, and the other is to adopt flexible support to firstly release a part of deformation, so that the integral stress of the supporting structure is reduced. However, in many construction processes, the two modes have certain problems, mainly because the deformation of the surrounding rock is too large, if the primary support with higher structural rigidity is adopted, the deformation of the surrounding rock can still not be resisted, and the pressure of the surrounding rock is accumulated to a certain stage, and the primary support with higher rigidity is damaged in a brittle way if the pressure of the surrounding rock is accumulated; the flexible support is adopted to firstly release part of deformation, so that the stress of the whole support structure is reduced, and the deformation quantity is possibly too large due to the fact that the deformation quantity cannot be reasonably and effectively controlled, and the problems of structural damage, limit invasion and the like are caused. .
Disclosure of Invention
The invention aims to provide a tunnel supporting structure suitable for large deformation of soft rock, which can reduce the damage of the large deformation of the tunnel surrounding rock to the structure and effectively improve the deformation resistance and the structural stability of the tunnel structure by releasing a certain surrounding rock deformation amount. On the other hand, the structure with higher rigidity can strongly resist the deformation of the surrounding rock after the deformation of the surrounding rock is released to a certain degree, so that the supporting purpose of combining rigidity and flexibility is achieved.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention discloses a tunnel supporting structure suitable for large deformation of soft rock, which comprises a steel frame supporting structure and an initial spray anchor support paved on the inner wall of the tunnel with large deformation of soft rock, wherein a plurality of foot-locking anchor rods are arranged on the initial spray anchor support, the steel frame supporting structure comprises steel corrugated plates, a high-strength spring and an annular support, the steel corrugated plates are connected with the foot-locking anchor rods, one end of the high-strength spring is connected with the steel corrugated plates, the other end of the high-strength spring is connected with the annular support, and the axial direction of the high-strength spring is the same as the radial direction of the annular support.
Furthermore, a plurality of high-strength springs are arranged at intervals along the circumferential direction of the annular support.
Preferably, the high-strength spring is connected with the steel corrugated plate in a welding mode, and the high-strength spring is connected with the annular support bolt in a welding mode.
Preferably, the annular support is an I-steel.
Preferably, the primary shotcrete support includes a steel mesh and shotcrete.
Preferably, the steel frame supporting structure is connected with the foot locking anchor rod through a bolt; the steel corrugated plate is provided with annular strip-shaped through holes, and the annular strip-shaped through holes are matched with the foot locking anchor rods.
The invention also discloses a construction method of the tunnel supporting structure, which comprises the following steps:
step1, after a tunnel is excavated, laying an initial spray anchor support on the inner wall surface of the surrounding rock in time, and primarily controlling the deformation of the surrounding rock;
step2, driving a foot-locking anchor rod into the initial shotcrete support, and arranging a base plate on the foot-locking anchor rod;
and 3, erecting a steel frame supporting structure at the left and right side arch positions on the first part, erecting a steel frame supporting structure at the upper arch position on the second part, and finally erecting a steel frame supporting structure at the bottom arch position, wherein the head and the tail of each part of supporting structure are connected by adopting a plurality of long-strip bolts and are bound and fixed at the joints by using steel stranded wires. A
Preferably, in step3, the foot-locking anchor rod is extended into the annular strip bolt hole reserved in the steel frame supporting structure from the outside to the inside, and the nut is screwed for fixing.
Preferably, in step3, when the surrounding rock is greatly deformed, the deformation space on one side of the surrounding rock is increased or reduced by properly adjusting the number of high-strength springs of the novel steel frame supporting system and adjusting the tightness of the bolts at the weak-rigidity nodes so as to adapt to the deformation of the surrounding rock.
Further, after step3, a deformation stabilization time is left.
The invention provides a deformation control supporting structure adopting a spray anchor support, a novel steel frame structure, a foot locking anchor rod and a movable bolt, which considers factors such as dead weight, cost, construction and the like, the structure and surrounding rock have larger contact area, and uniform bearing can be realized. The formed supporting structure can be properly deformed, the surrounding rock is allowed to be controllably deformed, partial load is released, the self-bearing capacity of the surrounding rock is mobilized, meanwhile, enough rigidity is guaranteed, the continuous pressure effects of long-term rheology, crushing and expansion and the like are resisted, and the long-term stability of the large-deformation tunnel structure is guaranteed.
Lay reinforcing bar net and shotcrete from inside to outside on the internal face in large deformation tunnel, erect again and assemble the novel steel frame bearing structure who forms by the steel buckled plate, high strength spring and I-steel, beat thereupon and establish the lock foot stock, adopt high strength spring coupling between outer steel buckled plate and the inlayer I-steel, high strength spring hookup location all adopts the welded mode, the inner of above-mentioned lock foot stock stretches into in the rectangular bolt hole of hoop of novel steel frame bearing structure from the extroversion to the nut of screwing fixes.
The steel corrugated plate and the high-strength spring steel corrugated plate connected with the same have certain deformation adaptability and are coordinately deformed with surrounding rocks.
The high-strength spring can be an industrial high-strength high-density compression spring and is made of spring steel.
The lock foot stock adopts ordinary lock foot stock, and the stock main part imbeds the country rock, and the tip is connected with novel steelframe for all supporting construction become a whole and carry out the atress and warp, have guaranteed the overall stability of structure.
The high-strength spring that steel buckled plate and novel steelframe are connected has great deformability, and the structure can give out certain deformation space when guaranteeing tunnel rear country rock large deformation.
The erection of the steel frame supporting structure is completed in three parts, wherein the first part is erected with steel frames at left and right side arch positions, the second part is erected with steel frames at upper arch positions, and finally, the steel frames at bottom arch positions are erected, the head and the tail of each part of the steel frames are connected by adopting a plurality of long bolts, and the joints are bound and fixed by steel strands, and the specific splicing method and the splicing length can be determined according to the condition of the actual tunnel section.
The invention has the following beneficial effects:
1. by adopting the tunnel supporting structure formed by the invention, on one hand, the damage of the tunnel surrounding rock large deformation to the structure can be reduced by releasing a certain surrounding rock deformation amount, and the deformation resistance and the structural stability of the tunnel structure can be effectively improved. On the other hand, the structure with higher rigidity can strongly resist the deformation of the surrounding rock after the deformation of the surrounding rock is released to a certain degree, so that the supporting purpose of combining rigidity and flexibility is achieved.
2. Compared with the I-steel and concrete adopted by common primary support, the novel steel frame supporting structure formed by assembling the steel corrugated plates, the high-strength springs and the I-steel has flexible deformation capacity, adapts to the shaping change stage of large deformation, and is characterized in that the steel corrugated plates, the high-strength springs and surrounding rocks of the steel frame structure are coordinately deformed under the load action, and the widened steel corrugated plates, the high-strength springs, the reinforcing mesh and the flexible supporting layer formed by the concrete spraying layer can effectively relieve stress concentration, long-term rheology and sudden large deformation of the surrounding rocks.
3. When the deformation equivalent of the surrounding rock is small, the steel corrugated plate and the high-strength spring are in a rigid stage and actively bear and transfer the load, and the steel corrugated plate, the high-strength spring and the I-shaped steel resist the load together; when the deformation equivalent is large, the steel corrugated plate and the high-strength spring are converted from rigid support to weak support, a certain surrounding rock deformation amount is released, the damage of the large deformation of the tunnel surrounding rock to the structure is reduced, when the deformation equivalent is too large, the steel corrugated plate and the high-strength spring are damaged and lose efficacy, the load is borne by the I-shaped steel with large rigidity, and the supporting system damage caused by the large deformation deterioration of the surrounding rock is effectively controlled by the multi-stage conversion auxiliary bearing mechanism.
4. The foot locking anchor rod adopted by the invention is embedded into the deep part of the surrounding rock, so that a fulcrum is provided for the subsequent deformation of the steel corrugated plate, and the capability of the steel corrugated plate to deform without limit along with the large deformation of the surrounding rock is restrained. Compared with other existing fixed connection modes, the movable bolt is more flexible and convenient to install, and has a positive effect on the subsequent deformation space reserved for large deformation of surrounding rocks.
Drawings
FIG. 1 is a schematic view of a steel frame support structure.
Fig. 2 is a schematic view of a steel corrugated plate and an annular support.
Fig. 3 is a schematic view of the connection of a corrugated steel plate to an annular support.
FIG. 4 is a schematic view of the connection of the foot-locking anchor to the steel frame support structure.
In the figure: 1-steel corrugated plate, 2-annular support, 3-high-strength spring, 4-welding part and 5-locking anchor rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, 2, 3 and 4, the invention is suitable for a tunnel supporting structure with large soft rock deformation, and comprises a steel frame supporting structure and an initial spray anchor support laid on the inner wall of the tunnel with large soft rock deformation, wherein the initial spray anchor support is provided with a plurality of foot-locking anchor rods 5, the steel frame supporting structure comprises steel corrugated plates 1, high-strength springs 3 and annular supports 2, the initial spray anchor support comprises a steel bar net and sprayed concrete, the annular supports 2 are made of i-shaped steel, the steel corrugated plates 1 are connected with the foot-locking anchor rods 5, and the high-strength springs 3 are arranged at intervals along the circumferential direction of the annular supports 2; one end of a high-strength spring 3 is connected with a steel corrugated plate 1, the other end of the high-strength spring 3 is connected with an annular support 2, the axial direction of the high-strength spring 3 is the same as the radial direction of the annular support 2, the high-strength spring 3 is connected with the steel corrugated plate 1 in a welding mode, the high-strength spring 3 is connected with the annular support 2 in a welding mode, a welding part 4 is a contact part of the high-strength spring 3 with the steel corrugated plate 1 and the annular support 2, and the high-strength spring 3 can also be connected; steel frame bearing structure and 4 bolted connection of lock foot stock are equipped with hoop strip through-hole on the steel buckled plate 1, hoop strip through-hole and 4 adaptations of lock foot stock.
The invention also discloses a construction method of the tunnel supporting structure, which comprises the following steps:
step1, after a tunnel is excavated, laying an initial spray anchor support on the inner wall surface of the surrounding rock in time, and primarily controlling the deformation of the surrounding rock;
step2, driving a foot-locking anchor rod into the initial shotcrete support, and arranging a base plate on the foot-locking anchor rod;
and 3, erecting a steel frame supporting structure at the left and right side arch positions on the first part, erecting a steel frame supporting structure at the upper arch position on the second part, and finally erecting a steel frame supporting structure at the bottom arch position, wherein the head and the tail of each part of supporting structure are connected by adopting a plurality of long-strip bolts and are bound and fixed at the joints by using steel stranded wires.
And 3, stretching the foot locking anchor rod into the annular strip bolt hole reserved in the steel frame supporting structure from outside to inside, and screwing the nut for fixing.
In the step3, when the surrounding rock is greatly deformed, the deformation space on one side of the surrounding rock is increased or reduced by properly adjusting the number of high-strength springs of the novel steel frame supporting system and adjusting the tightness of the bolts at the weak-rigidity nodes so as to adapt to the deformation of the surrounding rock.
After step3, a deformation stabilization time is left.
The specific implementation steps are as follows:
step1, firstly, digging a tunnel, then laying a reinforcing mesh in time and spraying concrete to preliminarily stabilize the surrounding rock for a certain time;
step2, erecting a novel steel frame supporting structure formed by assembling steel corrugated plates and I-shaped steel, wherein the erection is completed by three parts, the first part is erected with steel frames at left and right side arch positions, the second part is erected with steel frames at an upper arch position, and finally, the steel frames at a bottom arch position are erected, the head and the tail of each part of the steel frames are connected by adopting a plurality of long-strip bolts, and the joints are bound and fixed by steel stranded wires;
step3, driving a foot locking anchor rod into the surrounding rock through a reserved novel steel frame annular strip bolt hole at the position of the foot locking anchor rod, and simultaneously screwing a nut to fix the foot locking anchor rod;
step4, when the surrounding rock is greatly deformed, properly adjusting the number of high-strength springs and weak rigid nodes in the novel steel frame supporting system to increase or reduce the deformation space on one side of the surrounding rock so as to adapt to the deformation of the surrounding rock;
step5, after the deformation of the surrounding rock tends to be stable, the supporting structure achieves the supporting purpose of controlling the deformation, and then other procedures are carried out;
step6, forming a deformation control supporting structure of a spray anchor support, a novel steel frame, a foot locking anchor rod and a movable bolt through the construction steps, on one hand, the damage of the tunnel surrounding rock large deformation to the structure is reduced by releasing a certain surrounding rock deformation amount, and the deformation resistance and the structural stability of the tunnel structure are effectively improved. On the other hand, the structure with higher rigidity can strongly resist the deformation of the surrounding rock after the deformation of the surrounding rock is released to a certain degree, so that the supporting purpose of combining rigidity and flexibility is achieved.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a tunnel supporting construction suitable for soft rock is warp greatly, a serial communication port, include steel frame bearing structure and lay the preliminary stage shotcrete support on the tunnel inner wall that soft rock is warp greatly, be equipped with a plurality of stocks on the preliminary stage shotcrete support, steel frame bearing structure includes steel buckled plate, high strength spring and annular support, steel buckled plate connection lock foot stock, the steel buckled plate is connected to the one end of high strength spring, and the annular is connected to the other end of high strength spring and is supported, and the axial direction of high strength spring is the same with the radial direction that the annular supported.
2. The tunnel supporting structure suitable for soft rock large deformation according to claim 1, wherein the high-strength springs are arranged at intervals along the circumferential direction of the annular support.
3. The tunnel supporting structure suitable for soft rock large deformation according to claim 1, wherein the high-strength spring is connected with the steel corrugated plate in a welding mode, and the high-strength spring is connected with the annular supporting bolt in a welding mode.
4. The tunnel supporting structure suitable for soft rock large deformation according to claim 1, wherein the ring supports are I-shaped steel.
5. The tunnel supporting structure for soft rock large deformation according to claim 1, wherein the preliminary shotcrete support includes a reinforcing mesh and shotcrete.
6. The tunnel supporting structure suitable for soft rock large deformation according to claim 1, wherein the steel frame supporting structure is in bolt connection with a foot locking anchor rod; the steel corrugated plate is provided with annular strip-shaped through holes, and the annular strip-shaped through holes are matched with the foot locking anchor rods.
7. A method of constructing a tunnel supporting construction adapted according to any one of claims 1 to 6, including the steps of:
step1, after a tunnel is excavated, laying an initial spray anchor support on the inner wall surface of the surrounding rock in time, and primarily controlling the deformation of the surrounding rock;
step2, driving a foot-locking anchor rod into the initial shotcrete support, and arranging a base plate on the foot-locking anchor rod;
and 3, erecting a steel frame supporting structure at the left and right side arch positions on the first part, erecting a steel frame supporting structure at the upper arch position on the second part, and finally erecting a steel frame supporting structure at the bottom arch position, wherein the head and the tail of each part of supporting structure are connected by adopting a plurality of long-strip bolts and are bound and fixed at the joints by using steel stranded wires.
8. The construction method according to claim 7, wherein in step3, the foot-locking anchor rod is inserted into a circumferential strip bolt hole reserved in the steel frame supporting structure from the outside to the inside, and a nut is screwed for fixing.
9. The construction method according to claim 6, wherein in the step3, when the surrounding rock is deformed greatly, the deformation space on one side of the surrounding rock is increased or reduced by properly adjusting the number of high-strength springs of the novel steel frame supporting system and adjusting the tightness of bolts at weak rigidity nodes so as to adapt to the deformation of the surrounding rock.
10. Construction method according to claim 6, characterized in that after step3, a deformation stabilization time is left.
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| CN202010148248.8A CN111140266A (en) | 2020-03-05 | 2020-03-05 | Tunnel supporting structure suitable for large deformation of soft rock and construction method thereof |
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Cited By (10)
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| CN111550267A (en) * | 2020-05-26 | 2020-08-18 | 中山大学 | Tunnel primary support structure and construction method |
| CN111828054A (en) * | 2020-07-17 | 2020-10-27 | 中国矿业大学(北京) | Roadway scour prevention supporting device |
| CN111878123A (en) * | 2020-08-05 | 2020-11-03 | 同济大学 | Tunnel primary support construction method capable of adapting to high ground stress and rock burst |
| CN112780302A (en) * | 2021-01-22 | 2021-05-11 | 中山大学 | Tunnel energy-consumption supporting structure and construction method |
| CN112963169A (en) * | 2021-02-25 | 2021-06-15 | 西华大学 | Tunnel excavation large deformation strong support device |
| CN113073993A (en) * | 2021-04-16 | 2021-07-06 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Damping structure for roadway assembled supporting system |
| CN113137242A (en) * | 2021-03-16 | 2021-07-20 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Assembled combined supporting structure for deep underground space tunnel |
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| CN116291603A (en) * | 2023-03-10 | 2023-06-23 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
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| CN111550267B (en) * | 2020-05-26 | 2021-04-30 | 中山大学 | Tunnel primary support structure and construction method |
| CN111550267A (en) * | 2020-05-26 | 2020-08-18 | 中山大学 | Tunnel primary support structure and construction method |
| CN111828054A (en) * | 2020-07-17 | 2020-10-27 | 中国矿业大学(北京) | Roadway scour prevention supporting device |
| CN111878123B (en) * | 2020-08-05 | 2021-11-09 | 同济大学 | Tunnel primary support construction method capable of adapting to high ground stress and rock burst |
| CN111878123A (en) * | 2020-08-05 | 2020-11-03 | 同济大学 | Tunnel primary support construction method capable of adapting to high ground stress and rock burst |
| CN112780302A (en) * | 2021-01-22 | 2021-05-11 | 中山大学 | Tunnel energy-consumption supporting structure and construction method |
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| CN113137242A (en) * | 2021-03-16 | 2021-07-20 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Assembled combined supporting structure for deep underground space tunnel |
| CN113073993A (en) * | 2021-04-16 | 2021-07-06 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Damping structure for roadway assembled supporting system |
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| CN115110966A (en) * | 2022-08-30 | 2022-09-27 | 中铁十六局集团地铁工程有限公司 | Tunnel supporting structure and construction method |
| CN115110966B (en) * | 2022-08-30 | 2022-11-08 | 中铁十六局集团地铁工程有限公司 | Tunnel supporting structure and construction method |
| CN116291603A (en) * | 2023-03-10 | 2023-06-23 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
| CN116291603B (en) * | 2023-03-10 | 2023-11-28 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
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Application publication date: 20200512 |