CN114320344B - Tunnel lining structure capable of inducing deformation and rapid repair method thereof - Google Patents
Tunnel lining structure capable of inducing deformation and rapid repair method thereof Download PDFInfo
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- CN114320344B CN114320344B CN202111677239.9A CN202111677239A CN114320344B CN 114320344 B CN114320344 B CN 114320344B CN 202111677239 A CN202111677239 A CN 202111677239A CN 114320344 B CN114320344 B CN 114320344B
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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
- Y02E10/20—Hydro energy
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Abstract
The invention discloses an inducible deformation tunnel lining structure and a quick repair method thereof, and relates to the technical field of tunnel engineering. The quick repair method of the tunnel lining structure capable of inducing deformation comprises the steps of removing loose concrete within a damage range; chiseling the chiseling range of the structure; cutting the steel bars extending out of the concrete, and brushing a rust inhibitor and a waterproof coating in the polishing range; then arranging a drain pipe at the position of the deformation joint; and finally, supporting the mould, and pouring concrete in the structural repair range to perform lining. According to the invention, the groove is arranged at the deformation joint along the circumferential direction, so that the section height is reduced, the induced structural deformation or the control structural damage occurs at a local weak position, and the functions of actively inducing the deformation and controlling the damage range are realized.
Description
Technical Field
The invention relates to the field of tunnel engineering, in particular to an inducible deformation tunnel lining structure and a rapid repair method thereof.
Background
With the proposal and implementation of important strategies for construction, more and more important engineering construction pulls off the prologue in western regions. The engineering construction has important significance for perfecting the traffic and transportation network of China, meeting the production and living demands of the western region and promoting the harmonious and stable development of the western region. However, the western region of China has complex and changeable topography and topography, strong geological structure activity and poor geological structure development, and becomes a frequently encountered point for engineering construction in the western region, and particularly the tunnel engineering is most difficult to pass through a high seismic intensity region and a fracture fault concentration region.
The rock ring is easy to squeeze, crack and bulge under the condition of complex stress field to form stratum variation; the energy release is often accompanied when the stratum is changed, so that the engineering property of the rock is continuously deteriorated, the integrity of the rock body is further damaged, the stratum is finally broken under the long-term action, and the stress fields near the broken fault are obviously different. The existing research shows that the tunnel structure has obvious following property to stratum, and fracture or fault fracture zone is easy to generate stick-slip, creeping and uneven displacement, and has adverse effect on the stability and safety of the tunnel structure. In addition, the surrounding rock conditions of the fracture and fault fracture zone are relatively poor, the stratum has the characteristics of uneven hardness and alternating transition of hardness and softness, and obvious difference or mutation exists in the rigidity of the longitudinal surrounding rock, so that the tunnel is subjected to the combined action of bending and shearing when passing through the fracture fault, the structure is easily damaged by dislocation, extrusion cracking, water leakage and the like, and the construction and operation safety are adversely affected; the tunnel structure at the fracture or fault fracture position is particularly obvious under the action of earthquake and is subjected to fault shearing action, and the structure dislocation deformation is more obvious.
Many scholars have developed researches around how to ensure the structural safety of a tunnel penetrating through a high-intensity earthquake region and a fracture fault zone at home and abroad, and mainly propose methods for optimizing a lining section, expanding a reserved reinforcing space of a hole-digging chamber, longitudinally segmenting a lining, arranging an energy dissipation structure and the like from the aspect of design. However, in long-term engineering practice, it has also been found that these methods have a number of limitations: the adaptability to high intensity earthquake action and fracture fault zones is insufficient, and the position and the range of structural damage are difficult to control; lining repair after strong earthquake action is difficult and repair quality is difficult to ensure; the engineering investment is increased more; the longitudinal sections are mostly provided with wide deformation joints, the larger the width of the deformation joints is, the more easily the problem of water leakage is generated, and the greater the treatment difficulty is; the construction process is complex, the construction quality is difficult to control, and the like.
In summary, the tunnel structure still has the defects of insufficient adaptability to earthquake and stratum, difficult determination of damage range, difficult repair of damaged structure, insufficient waterproof effect and the like when the tunnel passes through a high-intensity earthquake region and a fracture fault zone at present, so that the functions of actively inducing deformation and controlling the damage range must be provided from multiple angles, the structure inspection during operation and the rapid repair after the damage of the structure are facilitated, and meanwhile, the lining structure with good waterproof reliability and the rapid repair method thereof are required.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the tunnel lining structure capable of inducing deformation and the rapid repair method thereof, so that the deformation position of the tunnel lining structure is reliable, the damage range is controlled, the repair time is shortened, and the repair difficulty is reduced.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a tunnel lining structure that can induce deformation, includes tunnel lining, tunnel lining has arranged primary support and secondary lining in proper order from outside to inside along tunnel radial, the secondary lining divide into a plurality of sections along tunnel length direction, is provided with the movement joint between the adjacent section, the secondary lining is provided with the recess along the hoop in movement joint position department, the recess includes recess lateral wall and recess bottom surface, the movement joint is located between two recess lateral walls, form the distance between the terminal surface that primary support was kept away from to recess bottom surface and secondary lining.
Further, the tunnel lining comprises a strong influence range area and a weak influence range area which are influenced by the high intensity earthquake area and the fracture fault zone along the length direction of the tunnel, a plurality of deformation joints are arranged in the strong influence range area and the weak influence range area, and the distance between one deformation joint and the other deformation joint in the strong influence range area is smaller than the distance between one deformation joint and the other deformation joint in the weak influence range area.
Further, the tunnel lining comprises an arch wall range and an inverted arch range, and lining external corners at deformation joints and grooves of the arch wall range are chamfered.
Further, the grooves in the inverted arch range are filled with waterproof buffer plates.
Further, waterproof buffer plates are filled in the deformation joints.
Further, the tunnel lining of the inverted arch range comprises a side ditch range and a side ditch range below, the side ditch range comprises a drainage plate range and a drainage plate range below, and the drainage plate range of the tunnel lining and the primary support and the secondary lining of the arch wall range are both provided with the drainage plate.
Further, a back-attached rubber water stop is arranged between the tunnel lining primary support and the secondary lining, and the back-attached rubber water stop is positioned between the secondary lining and the waterproof and drainage plate.
Further, the novel concrete foundation slab comprises a middle-buried rubber water stop, and the middle-buried rubber water stop is positioned between the bottom surface of the groove and one end, close to the primary support, of the secondary lining.
A rapid repair method of an inducible deformation tunnel lining structure comprises the steps of after the structure near a deformation joint of a tunnel lining is damaged and fails in water resistance under the action of bending shear,
the repairing method comprises the following steps:
a. removing loose concrete in the damage range of the groove;
b. chiseling the structure chiseling range according to the required structure repairing range;
c. cutting the steel bars extending out of the concrete, polishing the surface to be smooth, and sequentially brushing a rust inhibitor and a waterproof coating in the polishing range;
d. then arranging a drain pipe at the deformation joint position to drain the underground water to the tunnel side ditch; and finally, supporting the mould, and pouring concrete in the structural repair range to perform lining.
The beneficial effects of the invention are as follows:
1. according to the invention, the grooves are formed in the deformation joint along the circumferential direction, so that the section height is reduced, the bending rigidity and the shear rigidity of the lining structure in the local range of the deformation joint are weakened, the lining section is made into a longitudinal rigidity-changing structure, the deformation of the induced structure or the damage of the control structure occurs in the local weak position, and the functions of actively inducing the deformation and controlling the damage range are realized;
2. the invention is provided with the groove along the circumferential direction at the deformation joint, and can provide a structure working state checking space during operation; meanwhile, during the repair of the structural damage, compared with the traditional repair method, the existing groove not only can provide the chiseling operation space, but also greatly reduces the chiseling range, saves the repair time and improves the repair efficiency;
3. the waterproof system with the narrow deformation joint and the multiple waterproof layers has reliable waterproof and water stopping effects;
4. the invention provides a longitudinal variable stiffness lining structure capable of inducing deformation and a quick repair method thereof, which have strong adaptability to high-intensity earthquake areas or fracture fault zones, can realize active induced deformation and control of structure damage functions, are beneficial to structure inspection during operation and quick repair after the structure is damaged, and have good waterproof reliability. The scheme is feasible in technology, simple to operate and low in cost, and can be popularized and applied in large scale in the process that the tunnel passes through a high-intensity earthquake region or a fracture fault zone.
Drawings
FIG. 1 is a schematic plan view of a tunnel lining of the present invention in the lengthwise direction of the tunnel;
FIG. 2 is a schematic cross-sectional view of a deformation joint according to the present invention;
FIG. 3 is a schematic view of the structure of the deformation joint A of the present invention;
FIG. 4 is a schematic view of a B-type deformation joint according to the present invention;
FIG. 5 is a schematic view of the structure of the C-shaped deformation joint of the present invention;
FIG. 6 is a schematic view of a D-type deformation joint according to the present invention;
FIG. 7 is a schematic illustration of a partial structure damage repair process of the present invention;
FIG. 8 is a schematic view showing the effect of repairing damaged partial structures according to the present invention.
The figure shows: 1-lining a tunnel; 101-primary support; 102-secondary lining; 1021-strong influence range area; 1022-weak impact range region; 2-deformation joint; 3-grooves; 301-groove sidewalls; 302-groove floor; 4-segment; 5-arch wall range; 6-inverted arch range; 601-side ditch range; 602-the range below the lateral ditch; 7-chamfering; 8-a waterproof buffer plate; 9-a range of waterproof and drainage plates; 10-the range below the waterproof and drainage plate; 11-a waterproof and drainage plate; 12-back-attached rubber water stop; 13-a buried rubber water stop; 14-damage range; 15-structural repair scope; 16-structure chiseling range; 17-a drain pipe; 18-side trench bottoms; 19-inverted arch filling; 20-sealing glue.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1, 2 and 3, the tunnel lining structure capable of inducing deformation comprises a tunnel lining 1, wherein a primary support 101 and a secondary lining 102 are sequentially arranged on the tunnel lining 1 from outside to inside along the radial direction of a tunnel, the secondary lining 102 is divided into a plurality of sections 4 along the length direction of the tunnel, deformation joints 2 are arranged between adjacent sections 4, the secondary lining 102 is provided with grooves 3 along the circumferential direction at the positions of the deformation joints 2, the grooves 3 comprise groove side walls 301 and groove bottom surfaces 302, the deformation joints 2 are positioned between the two groove side walls 301, and a distance is formed between the groove bottom surfaces 302 and the end surfaces, far away from the primary support 101, of the secondary lining 102. According to the invention, the groove 3 is arranged at the position of the deformation joint 2 along the circumferential direction, so that the lining thickness of the secondary lining 102 at the groove 3 is reduced, the bending rigidity and the shearing rigidity of the lining structure in the local range of the deformation joint 2 are weakened, the lining section is made into a longitudinal rigidity-changing structure, the induced structural deformation or the control structural damage occurs at the local weak position, namely the groove 3 position at the position of the deformation joint 2, and the functions of actively inducing the deformation and controlling the damage range are realized; when the structure is damaged due to the phenomena of earthquake, rock formation fracture and the like, the position and the range of the structural damage are difficult to control, maintenance personnel need to find the damage position everywhere, and the damage position is difficult to predict, compared with the traditional method without the groove 3, the method has the advantages that the groove 3 structure is arranged at the deformation joint 2, the structure deformation is induced or the structure damage is controlled to the groove 3 position at the deformation joint 2, the functions of actively inducing the deformation and controlling the damage range are realized, and the structure working state checking space can be provided during operation; meanwhile, during structural damage repair, compared with traditional repair, the tunnel lining structure repair is quick and simple, the existing groove 3 not only can provide chiseling operation space, but also can greatly reduce chiseling range, save repair time and improve repair efficiency. Meanwhile, the groove 3 at the position of the deformation joint 2 can reduce the joint gap of the deformation joint 2, compared with the traditional deformation joint 2, the joint gap is shorter, and preferably, in the embodiment, the deformation joint 2 is 2cm wide, compared with the traditional deformation joint 2, the deformation joint 2 is narrower, and the waterproof effect is better.
The tunnel lining 1 includes a strong influence range area 1021 and a weak influence range area 1022, which are influenced by a high intensity seismic region and a fracture fault zone, along the tunnel length direction, a plurality of deformation joints 2 are arranged in the strong influence range area 1021 and the weak influence range area 1022, and the distance between one deformation joint 2 and the other deformation joint 2 in the strong influence range area 1021 is smaller than the distance between one deformation joint 2 and the other deformation joint 2 in the weak influence range area 1022. According to the invention, the tunnel lining 1 is divided into a strong influence range area 1021 and a weak influence range area 1022 according to the difference of the influence of a high intensity earthquake region and a fracture fault zone, the strong influence range area 1021 and the weak influence range area 1022 comprehensively consider geological conditions, earthquakes and fracture fault influence degrees to determine, the density of 2 deformation joints of the strong influence range area 1021 is greater than that of the weak influence range area 1022, and the tunnel lining 1 of the strong influence range area 1021 can structurally stably enhance the bearing capacity of the strong influence range area 1021 under the influence of the strong influence range area 1021.
As shown in fig. 2, the tunnel lining 1 comprises an arch wall range 5 and an inverted arch range 6, the tunnel lining 1 of the inverted arch range 6 comprises a side ditch range 601 and a side ditch range 602 below, the side ditch range 601 comprises a waterproof and drainage plate range 9 and a waterproof and drainage plate range below 10, the deformation joint structure is divided into four areas of a type, B type, C type and D type for convenience of description, the deformation joint structure is respectively shown in fig. 3, 4, 5 and 6, the a type is the arch wall range 5, the B type is the waterproof and drainage plate range 9, the C type is the waterproof and drainage plate range below 10, the D type is the side ditch range below 602, the tunnel lining 1 comprises the arch wall range 5 and the inverted arch range 6, and lining external corners at the deformation joint 2 and the groove 3 of the arch wall range 5 are respectively provided with chamfer angles 7. Through setting up chamfer 7 in lining external corner department, as shown in fig. 3, make the distance between the lining external corner grow, when tunnel lining 1 received the destruction, consider behind the reduction of structure lining thickness near deformation joint 2 that has set up recess 3, the neutral axle shifts up, under the bending load effect, arch wall scope 5 concrete produces great deformation and even crushing easily, and external corner department produces stress concentration phenomenon easily, consequently carry out the chamfer to the lining external corner of arch wall scope 5 movement joint 2 both sides and recess 3 both sides and handle, with the external corner destruction that reduces under the bending load effect.
The groove 3 positioned in the inverted arch range 6 is filled with a waterproof buffer plate 8, and the deformation joint 2 is filled with the waterproof buffer plate 8. The waterproof buffer plate 8 plays a role in buffering and waterproofing, the waterproof buffer plate 8 can be a plastic plate, concrete, a metal plate, a rubber plate, a wood plate and the like, and the waterproof buffer plate 8 in the embodiment adopts a polyethylene foam plastic plate, and the foam plastic plate has good waterproof and buffering effects.
The tunnel lining 1 of the inverted arch range 6 comprises a side ditch range 601 and a side ditch range 602 below, the side ditch range 601 comprises a drainage plate range 9 and a drainage plate range 10 below, and a drainage plate 11 is arranged between the drainage plate range 9 of the tunnel lining 1 and the primary support 101 and the secondary lining 102 of the arch wall range 5.
A back-attached rubber water stop 12 is arranged between the primary support 101 and the secondary lining 102 of the tunnel lining 1, and the back-attached rubber water stop 12 is positioned between the secondary lining 102 and the waterproof and drainage plate 11.
And the secondary lining 102 is arranged between the bottom surface 302 of the groove and one end, close to the primary support 101, of the secondary lining 102.
The back-attached rubber water stop 12, the middle-buried rubber water stop 13 and the waterproof buffer plate 8 are arranged at the position of the deformation joint 2, and the waterproof system of the multiple waterproof layers has reliable waterproof and water stop effects;
a rapid repair method of an inducible deformation tunnel lining structure comprises the steps of after the structure near a deformation joint 2 of a tunnel lining 1 is damaged and fails in water resistance under the action of bending shear,
the repairing method comprises the following steps:
a. removing loose concrete in a damage range 14 at the groove 3;
b. chiseling the structure removing range 16 according to the required structure repairing range 15;
c. cutting the steel bars extending out of the concrete, polishing the surface to be smooth, and sequentially brushing a rust inhibitor and a waterproof coating in the polishing range;
d. then arranging a drain pipe 17 at the position of the deformation joint 2 to drain underground water to a tunnel side ditch; and finally, supporting the mould, and pouring concrete in the structural repair range 15 to perform bushing.
As shown in fig. 7 and 8, the specific implementation is as follows: after the structure of the existing tunnel near the narrow deformation joint is damaged and the waterproof layer fails under the bending shearing action, loosening concrete in a damage range 14 at the groove 3 is removed by referring to FIG. 7; chiseling the structure removing range 16 according to the required structure repairing range 15; cutting the steel bars extending out of the concrete, polishing the surface to be smooth, and sequentially brushing a rust inhibitor and a waterproof coating in the polishing range; then arranging a drain pipe 17 at the position of the deformation joint 2 to drain underground water to a tunnel side ditch; and finally, supporting the mould, and pouring concrete in the structural repair range 15 to perform bushing. The structural repair scope 15 should be determined according to the damage degree of the structure, geological conditions, engineering risks and other factors; the structure removing range 16 should be determined according to the structure repairing range 15 and the like; the drain pipe 17 can be a semicircular annular drain pipe, preferably with a diameter of 80mm, and can be adjusted according to the actual water inflow. The longitudinal variable stiffness lining structure capable of inducing deformation and the repairing method thereof have strong adaptability to high-intensity earthquake areas or fracture fault zones, can realize active induced deformation and control of structure damage functions, are beneficial to structure inspection during operation and rapid repair after the structure is damaged, and have good waterproof reliability. The scheme is feasible in technology, simple to operate and low in cost, and can be popularized and applied in large scale in the process that the tunnel passes through a high-intensity earthquake region or a fracture fault zone.
Claims (9)
1. The utility model provides a tunnel lining structure of inducible deformation, includes tunnel lining (1), tunnel lining (1) has arranged primary support (101) and secondary lining (102) in proper order from outside to inside along the tunnel radial, secondary lining (102) divide into a plurality of sections (4) along tunnel length direction, is provided with deformation joint (2) between adjacent section (4), its characterized in that: the secondary lining (102) is provided with a groove (3) along the annular direction at the position of the deformation joint (2), structural deformation and damage can be induced to occur at the position of the groove (3), the groove (3) comprises groove side walls (301) and groove bottom surfaces (302), the deformation joint (2) is positioned between the two groove side walls (301), and a distance is formed between the groove bottom surfaces (302) and the end surfaces, far away from the primary support (101), of the secondary lining (102).
2. A tunnel liner capable of inducing deformation as claimed in claim 1, wherein: the tunnel lining (1) comprises a strong influence range area (1021) and a weak influence range area (1022) which are influenced by a high intensity earthquake area and a fracture fault zone along the length direction of the tunnel, a plurality of deformation joints (2) are arranged in the strong influence range area (1021) and the weak influence range area (1022), and the distance between one deformation joint (2) and the other deformation joint (2) in the strong influence range area (1021) is smaller than the distance between one deformation joint (2) and the other deformation joint (2) in the weak influence range area (1022).
3. A tunnel lining structure which is deformable by induction according to claim 1 or 2, wherein: the tunnel lining (1) comprises an arch wall range (5) and an inverted arch range (6), and lining external corners at the deformation joint (2) of the arch wall range (5) and the groove (3) are respectively provided with a chamfer (7).
4. A tunnel lining structure which is deformable in accordance with claim 3 wherein: the grooves (3) in the inverted arch range (6) are filled with waterproof buffer plates (8).
5. An inductively deformable tunnel liner as recited in claim 4, wherein: the deformation joint (2) is filled with a waterproof buffer plate (8).
6. An inductively deformable tunnel liner as recited in claim 5, wherein: tunnel lining (1) of invert scope (6) includes side ditch scope (601) and scope below the side ditch (602), side ditch scope (601) include waterproof drain bar scope (9) and prevent scope below the drain bar (10), tunnel lining (1) prevent drain bar scope (9) with all be provided with between arch wall scope (5) primary support (101) and secondary lining (102) prevent drain bar (11).
7. An inductively deformable tunnel liner as recited in claim 6, wherein: a back-attached rubber water stop (12) is arranged between the primary support (101) and the secondary lining (102) of the tunnel lining (1), and the back-attached rubber water stop (12) is positioned between the secondary lining (102) and the waterproof and drainage plate (11).
8. An inductively deformable tunnel liner as recited in claim 7, wherein: the novel concrete foundation pile is characterized by further comprising a buried rubber water stop (13), wherein the buried rubber water stop (13) is positioned between the bottom surface (302) of the groove and one end, close to the primary support (101), of the secondary lining (102).
9. A rapid repair method of a tunnel lining structure capable of inducing deformation is characterized by comprising the following steps of: comprising an inducible deformable tunnel lining structure according to any one of claims 1 to 8, which, when the tunnel lining (1) is subjected to a failure in the vicinity of the deformation joint (2) by bending and shearing,
the repairing method comprises the following steps:
a. removing loose concrete in a damage range (14) at the groove (3);
b. chiseling a structural chiseling range (16) according to the required structural repair range (15);
c. cutting the steel bars extending out of the concrete, polishing the surface to be smooth, and sequentially brushing a rust inhibitor and a waterproof coating in the polishing range;
d. then arranging a drain pipe (17) at the position of the deformation joint (2) to drain the underground water to the side ditch of the tunnel; and finally, supporting the mould, pouring concrete in a structural repair range (15), and performing lining.
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| CN202111677239.9A CN114320344B (en) | 2021-12-31 | 2021-12-31 | Tunnel lining structure capable of inducing deformation and rapid repair method thereof |
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| CN202111677239.9A CN114320344B (en) | 2021-12-31 | 2021-12-31 | Tunnel lining structure capable of inducing deformation and rapid repair method thereof |
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