CN219754535U - 1+2+1 lining segment structure of small-section double-shield TBM water delivery tunnel - Google Patents
1+2+1 lining segment structure of small-section double-shield TBM water delivery tunnel Download PDFInfo
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- CN219754535U CN219754535U CN202222635993.2U CN202222635993U CN219754535U CN 219754535 U CN219754535 U CN 219754535U CN 202222635993 U CN202222635993 U CN 202222635993U CN 219754535 U CN219754535 U CN 219754535U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000011435 rock Substances 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model belongs to the technical field of hydraulic engineering tunnel construction, and particularly relates to a 1+2+1 lining segment structure of a small-section double-shield TBM water delivery tunnel. The technical scheme of the utility model is as follows: this lining segment structure includes: the two ends of the standard block A2 and the standard block B3 are both in a shape of a Chinese character 'ji'; the upward arch block is positioned at the bottom of the single-ring duct piece, the standard block A2 and the standard block B3 are respectively connected with grooves at two ends of the upward arch block through bulges at the end parts, and the bulges at the other ends of the standard block A2 and the standard block B3 are connected with grooves at two ends of the sealing arch block to form the single-ring duct piece; the upward arch blocks, the standard block A2, the standard block B3 and the arch sealing blocks in the same single ring segment are also connected through annular bolts; the outer cambered surface of the inverted arch block is provided with a support, and the support is connected with surrounding rock; the center of the inner cambered surface of the inverted arch block is provided with a drainage ditch, two sides of the drainage ditch are symmetrically provided with track platforms, and the track platforms are provided with tracks.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering tunnel construction, and particularly relates to a 1+2+1 lining segment structure of a small-section double-shield TBM water delivery tunnel.
Background
In recent years, along with the gradual improvement of the tunnel construction level in China, the double-shield TBM construction technology with higher mechanization and automation degree is popularized and applied, is widely applied to underground tunnel engineering construction of water conservancy, urban traffic and the like, and has the characteristics of rapidness, high efficiency, safety, high automation and informatization degree and the like.
The tunnel excavated by the double-shield TBM tunneling machine is generally formed by splicing multiple ring segments in a prefabricated concrete pipe lining mode, each ring segment is formed by splicing multiple segments, and under the conditions of poor surrounding rock pressure, underground water pressure and external complex conditions, the structural design of the segments directly influences the construction and operation safety of the tunnel. The small-section water delivery tunnel is the main force army of urban water supply planning layout, and when the small-section water delivery tunnel is excavated by utilizing the double-shield TBM, the construction quality of the small-section water delivery tunnel is closely related to the design of the duct piece structure. The lining segment not only needs to meet the influence of uncertain safety factors caused by bad geological conditions in the construction process, but also needs to consider the difficulty of transportation and assembly, and meanwhile, the number of segment joints has a great influence on the integrity, so that the impervious water resistance of the water delivery tunnel and the safety operation of later water supply can be determined.
Therefore, how to improve the integrity of the lining segments of the small-section water delivery tunnel and the construction quality of installation is a great difficulty faced by the existing small-section water delivery tunnel construction technology.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure.
This kind of two shield TBM water delivery tunnel 1+2+1 lining segment structures of small section includes: the two ends of the inverted arch block 1 and the sealing arch block 4 are provided with grooves, and the two ends of the standard block A2 and the standard block B3 are both in a shape of a Chinese character 'ji'; the upward arch block 1 is positioned at the bottom of the single-ring duct piece, the standard block A2 and the standard block B3 are respectively connected with grooves at two ends of the upward arch block 1 through bulges at the end parts, and the bulges at the other ends of the standard block A2 and the standard block B3 are connected with grooves at two ends of the sealing arch block 4 to form the single-ring duct piece; the upward arch blocks 1, the standard blocks A2, the standard blocks B3 and the arch sealing blocks 4 in the same single ring segment are also connected through annular bolts 8;
the outer cambered surface of the upward arch block 1 is provided with a support 1-2, and the support 1-2 is connected with surrounding rock; the center of the intrados of the upward arch block 1 is provided with a drainage ditch 1-1, both sides of the drainage ditch 1-1 are symmetrically provided with track platforms, and the track platforms are provided with tracks 1-4;
lifting grouting holes 5 are formed in the inner cambered surfaces of the upward arch block 1, the standard block A2, the standard block B3 and the sealing arch block 4, and the lifting grouting holes 5 penetrate through the outer cambered surfaces in the radial direction; the side surfaces of the upward arch block 1, the standard block A2, the standard block B3 and the sealing arch block 4 are symmetrically provided with positioning pins 6 and longitudinal bolt holes 7-1, and adjacent single-ring duct pieces are connected through the positioning pins 6 and the longitudinal bolts 7.
As preferable: the horizontal unfolding surfaces of the upward arch block 1 and the arch sealing block 4 are isosceles trapezoids, and the horizontal unfolding surfaces of the standard block A2 and the standard block B3 are parallelograms.
As preferable: the overhead arch block 1, the standard block A2 and the standard block B3 are provided with two hoisting grouting holes 5, and the sealing arch block 4 is provided with three hoisting grouting holes 5.
As preferable: the hand holes of the longitudinal bolts 7 are arranged on the side surfaces of the upward arch block 1, the standard blocks 2 and 3 and the sealing arch block 4 in the direction of the face, and the bolt holes of the longitudinal bolts 7 are arranged on the side surfaces of the upward arch block 1, the standard blocks 2 and 3 and the sealing arch block 4 in the direction of the opening.
As preferable: the hand holes of the circumferential bolts 8 are arranged on the standard block A2 and the standard block B3, and the bolt holes of the circumferential bolts 8 are arranged on the upward arch block 1 and the sealing arch block 4.
As preferable: two sides of the bottom of each track 1-4 are respectively provided with a track pressing plate 1-6, and the track pressing plates 1-6 are fixedly connected with the track platform through track bolts 1-3 and track bolt embedded holes 1-5 in the track platform.
As preferable: the central angle of the pitching block 1 is 82 degrees, the central angles of the standard block A2 and the standard block B3 are 87 degrees, and the central angle of the sealing arch block 4 is 104 degrees.
As preferable: the joints of the upward arch block 1, the standard block A2, the standard block B3 and the sealing arch block 4 are also provided with water stop bars and waterproof adhesives.
The method for installing the 1+2+1 lining segment structure of the small-section double-shield TBM water delivery tunnel comprises the following steps:
s1, hoisting the overhead arch block 1 through a hoisting grouting hole 5, so that the support 1-2 of the overhead arch block 1 is supported on the surrounding rock surface at the bottom;
s2, lifting the standard block A2 and the standard block B3, and enabling the C-shaped bulges at one end of the standard block A2 and one end of the standard block B3 to be embedded into the grooves at the end part of the overhead arch block 1;
s3, hoisting the arch sealing block 4, so that the C-shaped bulges at the other ends of the standard block A2 and the standard block B3 are embedded into the grooves at the two ends of the arch sealing block 4;
s4, connecting a single ring segment through a locating pin 6 and a longitudinal bolt 7, and then fastening the arch raising block 1, the standard block A2, the standard block B3 and the arch sealing block 4 through a circumferential bolt 8;
s5, grouting is carried out through hoisting grouting holes 5, and sealing is completed; and the track 1-4 is arranged on the inner cambered surface of the upward arch block 1.
The beneficial effects of the utility model are as follows:
1) The single-ring duct piece consists of 1 upward arch block, 2 standard blocks and 1 sealing arch block, and has the advantages of small transportation task and simple assembly; each section of jurisdiction mounted position is fixed, and embedded installation adopts hoop bolted connection between the piece, through locating pin and vertical bolted connection between the ring and the ring, and the location is accurate, can effectually improve installation accuracy and construction progress.
2) The single-ring pipe piece and the single-ring pipe piece are assembled by adopting an embedded type design in a shape like a Chinese character 'ji', longitudinal joint is avoided, and the single-ring pipe piece are combined with water stop strips and waterproof adhesives, so that the single-ring pipe piece and the single-ring pipe piece have good waterproof and impervious performances, and the safe operation of a water delivery tunnel is ensured.
3) The rail platform is arranged in the upward arch block, so that the transportation rail of equipment is easy to arrange, and mechanical equipment and material transportation are facilitated; the bottom of the inverted arch block is provided with the support, and the inverted arch block can directly fall on bedrock during installation, so that the problem of uneven settlement after the pipe piece leaves the tail shield is effectively solved.
Drawings
FIG. 1 is a block diagram of the structure of the present utility model;
FIG. 2 is a schematic horizontal development of the intrados connection of the present utility model;
FIG. 3 is a detail view of the longitudinal bolting between the structural rings of the present utility model;
FIG. 4 is a detail view of the circumferential bolting between structural blocks of the present utility model;
FIG. 5 is a schematic view of the intrados of the present utility model shown horizontally deployed;
FIG. 6 is a block diagram of a structural pitch arch according to the present utility model (where FIG. 6a is a front view of the structural pitch arch, FIG. 6b is a top view of the structural pitch arch, and FIG. 6c is a side view of the structural pitch arch);
FIG. 7 is a block diagram of a structural module A according to the present utility model (wherein FIG. 7a is a front view of structural module A, FIG. 7b is a top view of structural module A, and FIG. 7c is a side view of structural module A);
FIG. 8 is a block diagram of a structural block B of the present utility model (where FIG. 8a is a front view of structural block B, FIG. 8B is a top view of structural block B, and FIG. 8c is a side view of structural block B);
fig. 9 is a block diagram of the structural seal of the present utility model (where fig. 9a is a front view of the structural seal, fig. 9b is a top view of the structural seal, and fig. 9c is a side view of the structural seal).
Reference numerals illustrate: the novel concrete pile comprises an arch raising block 1, a drainage ditch 1-1, a support 1-2, a track pressing plate bolt 1-3, a track 1-4, a track pressing plate bolt pre-buried hole 1-5, a track pressing plate 1-6, a standard block A2, a standard block B3, an arch sealing block 4, a hoisting grouting hole 5, a positioning pin 6, a longitudinal bolt 7 and a circumferential bolt 8.
Detailed Description
The utility model is further described below with reference to examples. The following examples are presented only to aid in the understanding of the utility model. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present utility model without departing from the principles of the utility model, and such modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Example 1
As an embodiment, as shown in fig. 1 to 9, a small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure comprises a single ring segment body, and is characterized in that the single ring segment body consists of a face upward arch block 1, 2 standard blocks (a standard block A2 and a standard block B3 respectively) and an arch sealing block 4;
the horizontal expansion surface of the upward arch block 1 is isosceles trapezoid, and the center angle is 82 degrees; the horizontal expansion surfaces of the standard block A2 and the standard block B3 are parallelograms, and the central angle is 87 degrees; the horizontal unfolding surface of the arch sealing block is isosceles trapezoid, and the central angle is 104 degrees.
The two ends of the inverted arch block 1 are in a groove shape, the two ends of the sealing arch block 4 are also in a groove shape, the two ends of the standard block A2 and the standard block B3 are in a convex folding shape like a Chinese character 'ji', the blocks are inserted and embedded, and waterproof adhesive is smeared at the joint for seamless splicing, so that the seepage-proofing capability is greatly improved; in the single-ring duct piece, the blocks are connected by adopting annular bolts 8, two groups of annular bolts 8 are arranged on the contact surface of the blocks, and hand holes of the annular bolts 8 are arranged on the standard block A2 and the standard block B3;
the rings of the adjacent single-ring segments are positioned through the positioning pins 6, and two positioning holes are formed in the contact surface, so that the installation accuracy is ensured; the adjacent single-ring segments are connected by adopting a longitudinal bolt 7; the connection of the ring and the longitudinal bolts 7 of the ring contact surface comprises hand holes and longitudinal bolt holes 7-1, wherein the hand holes are arranged at each 2 positions of the inverted arch block 1, the standard blocks 2 and 3 and the side surfaces of the sealing arch block 4 in the direction of the tunnel face, and the side surfaces facing the direction of the hole opening are the longitudinal bolt holes 7-1 and the corresponding 2 positions;
the center of the intrados of the inverted arch block 1 is provided with a drainage ditch 1-1, both sides of the drainage ditch 1-1 are provided with track platforms, each track platform comprises a track bolt embedded hole 1-5, a track bolt 1-3, a track 1-4 and a track pressing plate 1-6, the extrados of the inverted arch block 1 is provided with a support 1-2, and the support 1-2 is supported on the surrounding rock surface at the bottom;
the center positions of the inner cambered surfaces of the arch sealing blocks are uniformly provided with 3 hoisting grouting holes 5, and the center positions of the inner cambered surfaces of the inverted arch blocks 1, the standard blocks A2 and the standard blocks B3 are provided with 2 hoisting grouting holes 5; hoisting grouting holes 5 penetrate through to the outer cambered surface along the radial direction; the hoisting grouting holes 5 can be used for hoisting and grouting.
Example two
As another embodiment, the installation method of the small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure provided in the first embodiment is provided, specifically:
s1, hoisting the overhead arch block 1 through a hoisting grouting hole 5, so that the support 1-2 of the overhead arch block 1 is supported on the surrounding rock surface at the bottom;
s2, lifting the standard block A2 and the standard block B3, and enabling the C-shaped bulges at one end of the standard block A2 and one end of the standard block B3 to be embedded into the grooves at the end part of the overhead arch block 1;
s3, hoisting the arch sealing block 4, so that the C-shaped bulges at the other ends of the standard block A2 and the standard block B3 are embedded into the grooves at the two ends of the arch sealing block 4;
s4, connecting a single ring segment through a locating pin 6 and a longitudinal bolt 7, and then fastening the arch raising block 1, the standard block A2, the standard block B3 and the arch sealing block 4 through a circumferential bolt 8;
s5, grouting is carried out through hoisting grouting holes 5, and sealing is completed; and the track 1-4 is arranged on the inner cambered surface of the upward arch block 1.
Wherein, before connecting the upward arch block 1, the standard block A2, the standard block B3 and the sealing arch block 4, waterproof adhesive is smeared on the end face.
Claims (8)
1. 1+2+1 lining section of jurisdiction structure of small section double shield TBM water delivery tunnel, its characterized in that includes: the two ends of the inverted arch block (1) and the sealing arch block (4) are provided with grooves, and the two ends of the standard block A (2) and the standard block B (3) are both protruding in a shape of a Chinese character 'ji'; the upward arch block (1) is positioned at the bottom of the single-ring duct piece, the standard block A (2) and the standard block B (3) are respectively connected with grooves at two ends of the upward arch block (1) through bulges at the end parts, and the bulges at the other ends of the standard block A (2) and the standard block B (3) are connected with grooves at two ends of the sealing arch block (4) to form the single-ring duct piece; the inverted arch blocks (1), the standard blocks A (2), the standard blocks B (3) and the sealing arch blocks (4) in the same single-ring pipe piece are also connected through annular bolts (8);
the outer cambered surface of the upward arch block (1) is provided with a support (1-2), and the support (1-2) is connected with surrounding rock; a drainage ditch (1-1) is arranged in the center of the intrados of the upward arch block (1), track platforms are symmetrically arranged on two sides of the drainage ditch (1-1), and tracks (1-4) are arranged on the track platforms;
lifting grouting holes (5) are formed in the intrados of the upward arch block (1), the standard block A (2), the standard block B (3) and the arch sealing block (4), and the lifting grouting holes (5) penetrate through the extrados along the radial direction; the side surfaces of the upward arch block (1), the standard block A (2), the standard block B (3) and the sealing arch block (4) are symmetrically provided with positioning pins (6) and longitudinal bolt holes (7-1), and adjacent single-ring segments are connected through the positioning pins (6) and the longitudinal bolts (7).
2. The small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure according to claim 1, wherein: the horizontal expansion surfaces of the upward arch block (1) and the sealing arch block (4) are isosceles trapezoids, and the horizontal expansion surfaces of the standard block A (2) and the standard block B (3) are parallelograms.
3. The small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure according to claim 1, wherein: the overhead arch block (1), the standard block A (2) and the standard block B (3) are provided with two hoisting grouting holes (5), and the sealing arch block (4) is provided with three hoisting grouting holes (5).
4. The small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure according to claim 1, wherein: the hand hole of the longitudinal bolt (7) is arranged on the side face of the face direction of the upward arch block (1), the standard block A (2), the standard block B (3) and the sealing arch block (4), and the longitudinal bolt hole (7-1) is arranged on the side face of the hole direction of the upward arch block (1), the standard block A (2), the standard block B (3) and the sealing arch block (4).
5. The small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure according to claim 1, wherein: the hand holes of the circumferential bolts (8) are arranged on the standard block A (2) and the standard block B (3), and the bolt holes of the circumferential bolts (8) are arranged on the upward arch block (1) and the closing arch block (4).
6. The small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure according to claim 1, wherein: two sides of the bottom of each track (1-4) are respectively provided with a track pressing plate (1-6), and the track pressing plates (1-6) are fixedly connected with the track platform through track bolts (1-3) and track bolt embedded holes (1-5) in the track platform.
7. The small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure according to claim 1, wherein: the central angle of the arch raising block (1) is 82 degrees, the central angles of the standard block A (2) and the standard block B (3) are 87 degrees, and the central angle of the arch sealing block (4) is 104 degrees.
8. The small-section double-shield TBM water delivery tunnel 1+2+1 lining segment structure according to claim 1, wherein: the joints of the upward arch block (1), the standard block A (2), the standard block B (3) and the sealing arch block (4) are also provided with water stop bars or waterproof adhesives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222635993.2U CN219754535U (en) | 2022-10-08 | 2022-10-08 | 1+2+1 lining segment structure of small-section double-shield TBM water delivery tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222635993.2U CN219754535U (en) | 2022-10-08 | 2022-10-08 | 1+2+1 lining segment structure of small-section double-shield TBM water delivery tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219754535U true CN219754535U (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222635993.2U Active CN219754535U (en) | 2022-10-08 | 2022-10-08 | 1+2+1 lining segment structure of small-section double-shield TBM water delivery tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219754535U (en) |
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- 2022-10-08 CN CN202222635993.2U patent/CN219754535U/en active Active
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