CN109268031A - Tube coupling can fill the plugging structure and construction method of bag type paste at service channel hole - Google Patents
Tube coupling can fill the plugging structure and construction method of bag type paste at service channel hole Download PDFInfo
- Publication number
- CN109268031A CN109268031A CN201811004982.6A CN201811004982A CN109268031A CN 109268031 A CN109268031 A CN 109268031A CN 201811004982 A CN201811004982 A CN 201811004982A CN 109268031 A CN109268031 A CN 109268031A
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- China
- Prior art keywords
- tube coupling
- hole
- grouting
- bag
- grouting bag
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Classifications
-
- 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
-
- 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Abstract
The present invention relates to plugging structures and construction method that tube coupling at a kind of service channel hole can fill bag type paste, which includes: the grouting bag being sheathed at hole on tube coupling, slip casting space are formed with inside the grouting bag, and the grouting bag has elasticity；And the Grouting Pipe at the hole in tube coupling is connect and is embedded in the grouting bag, slurries are injected into the slip casting space of the grouting bag so that the grouting bag is heaved to the outside of tube coupling at the hole and blocks the gap at the hole between tube coupling and main tunnel by the Grouting Pipe.The present invention injects slurries into grouting bag by Grouting Pipe, the grouting bag for avoiding the loss of slurries, and quickly heaving can the rough surface in blind, with main tunnel perfectly agree with, achieve the purpose that block gap.Solve the problems, such as that slurries are lost and leak stopping is inefficient, and especially suitable for the biggish operating condition in gap, the risk that can effectively avoid water and soil from pouring in occurs.
Description
Technical field
The present invention relates to Tunnel Engineering technical field, the envelope of bag type paste can be filled by refering in particular to tube coupling at a kind of service channel hole
Bridging structure and construction method.
Background technique
When using full Mechanical Method (push bench process) to perform branch line tunnel on existing main line tunnel, push-bench cuts main line section of jurisdiction
When caused by notch be the smooth face of Non-smooth surface, and there are certain gaps between the size to punch and tube coupling out-to-out.This
After the completion of a little gaps will lead to final branch line tunnel assembly, the processing of sealing becomes complicated when performing FS final spice.
Normal practice carries out grouting for water plugging to seam crossing using by the pre-buried Grouting Pipe of tube coupling, and welds water-stopping steel
Plate blocks seepage channel, i.e., the gap between branch line tunnel and main line tunnel duct piece is blocked using steel plate for sealing water and slip casting, until
Complete the construction of FS final spice.Such way has following defects that grouting serous fluid is dispersed into the soil body, and turnover rate is larger, blocks up
What is leaked is inefficient；For biggish gap, there is also the risks that certain water and soil pours in.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, capsule can be filled by providing tube coupling at a kind of service channel hole
The plugging structure and construction method of pocket type, solve that slurries turnover rate existing for existing closure way is larger, leak stopping is inefficient
And there is a problem of risk that water and soil pours in etc. for the operating condition of larger gap.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides the plugging structures that tube coupling at a kind of service channel hole can fill bag type paste, comprising:
The grouting bag being sheathed at hole on tube coupling is formed with slip casting space, and the note inside the grouting bag
Starching pouch has elasticity；And
The Grouting Pipe at the hole in tube coupling is connect and is embedded in the grouting bag, by the Grouting Pipe to institute
It states and injects slurries in the slip casting space of grouting bag so that the grouting bag is heaved simultaneously to the outside of tube coupling at the hole
Block the gap at the hole between tube coupling and main tunnel.
The present invention connects to form a kind of plugging structure with Grouting Pipe using grouting bag, through Grouting Pipe into grouting bag
Inject slurries, the grouting bag for avoiding the loss of slurries, and quickly heaving being capable of coarse table in blind, with main tunnel
Face is perfectly agreed with, and achievees the purpose that block gap.Solve the problems, such as that slurries are lost and leak stopping is inefficient and of the invention
Knot is blocked especially suitable for the biggish operating condition in gap, the risk that can effectively avoid water and soil from pouring in occurs.
At service channel hole of the present invention the plugging structure of tube coupling further improvement lies in that, the grouting bag passes through viscous
Gum deposit is adhered to the outer surface of tube coupling at the hole.
At service channel hole of the present invention the plugging structure of tube coupling further improvement lies in that, tube coupling is outer at the hole
The position that surface corresponds to the grouting bag is equipped with an annular groove；
The grouting bag has the slot bottom for being partially submerged into the annular groove and passing through adhesive glue and the annular groove
It is adhesively fixed.
At service channel hole of the present invention the plugging structure of tube coupling further improvement lies in that, the grouting bag be in annulus
Shape, and its radian adapts to the radian in the gap at the hole between tube coupling and main tunnel.
At service channel hole of the present invention the plugging structure of tube coupling further improvement lies in that, be arranged in the Grouting Pipe solid
Surely there is a seal ring, the seal ring is embedded at the hole in tube coupling.
The present invention also provides the construction method that tube coupling at a kind of service channel hole can fill the plugging structure of bag type paste,
Include the following steps:
When using service channel between the main tunnel of construction by pipeline jacking method two, provide with plugging structure described in claim 1
Hole at tube coupling, and in place by tube coupling assembly at the hole；
Injected by the Grouting Pipe into the slip casting space of the grouting bag slurries make the grouting bag to
The outside of tube coupling heaves and blocks the gap at the hole between tube coupling and main tunnel at hole；And
The jointing constructed at the hole between tube coupling and corresponding main tunnel, to complete the construction of service channel.
Construction method of the invention further improvement lies in that, grouting bag is being connected with tube coupling at corresponding hole
When, in coating adhesive glue in the grouting bag, and the grouting bag is adhered at the hole by the adhesive glue
On the outer surface of tube coupling.
Construction method of the invention further improvement lies in that, grouting bag is being connected with tube coupling at corresponding hole
When, an annular groove is opened up at the position that the outer surface of tube coupling corresponds to the grouting bag at the hole；
The grouting bag is partially submerged into the annular groove and Nian Jie with the annular groove solid by adhesive glue
It is fixed.
Construction method of the invention further improvement lies in that, the grouting bag is annular in shape, and its radian adapts to
The radian in the gap at the hole between tube coupling and main tunnel.
Construction method of the invention further improvement lies in that, when burying the Grouting Pipe, covered in the Grouting Pipe
If being fixed with a seal ring, and the seal ring is embedded at the hole in tube coupling together with the Grouting Pipe.
Detailed description of the invention
Fig. 1 is that the plugging structure that tube coupling can fill bag type paste at service channel hole of the present invention is set at hole on tube coupling
Structural schematic diagram.
Fig. 2 is that tube coupling can fill the plugging structure of bag type paste and cut open set on tube coupling at hole at service channel hole of the present invention
View.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to fig. 1, the present invention provides tube coupling at a kind of service channel hole can fill bag type paste plugging structure and its
Construction method is fitted the stem tube coupling and end portion tube coupling (i.e. tube coupling at hole) of service channel, is acted on as by stem tube coupling and end portion
Gap at tube coupling between main tunnel duct piece is blocked, and grouting bag is the flexible flat sack of sky, and inside is formed with note
Space is starched, and injecting slurries into grouting bag grouting bag is heaved, blind, and slurries is prevented to be lost,
Solve the problems, such as that slurries turnover rate is big existing for existing way, leak stopping is inefficient.Grouting bag of the invention is for master
The larger situation in gap is especially suitable between tunnel and service channel, can agree with completely with the rough surface on main tunnel, reach
To the purpose for blocking gap.The plugging structure of bag type paste can be filled to tube coupling at service channel hole of the present invention with reference to the accompanying drawing
And its construction method is illustrated.
Refering to fig. 1, it is shown that the plugging structure that tube coupling can fill bag type paste at service channel hole of the present invention is set to hole
Locate the structural schematic diagram on tube coupling.Referring to Fig.2, showing that tube coupling can fill the closure of bag type paste at service channel hole of the present invention
Structure is set to the cross-sectional view of tube coupling at hole.Closure below with reference to Fig. 1 and Fig. 2, to tube coupling at service channel hole of the present invention
Structure is illustrated.
As depicted in figs. 1 and 2, tube coupling can fill the plugging structure 20 of bag type paste and include at service channel hole of the invention
Grouting bag 21 and Grouting Pipe 22, tube coupling is the stem tube coupling and end portion tube coupling of service channel, service channel at hole therein
To connect the channel between two adjacent main tunnels, the stem tube coupling and end portion tube coupling of service channel and corresponding main tunnel
Tube coupling is connected to each other, and there are certain gaps between stem tube coupling and end portion tube coupling and the tube coupling in corresponding main tunnel, thus even
When adaper portion tube coupling and end portion tube coupling, which need to be blocked, the water and soil outside tube coupling is avoided to pour in tunnel internal.The present invention
20 stem tube coupling of plugging structure and end portion tube coupling on, and will be between stem tube coupling and end portion tube coupling and the tube coupling in corresponding main tunnel
Gap plugging.Grouting bag 21 is sheathed at hole on tube coupling 11, slip casting space is formed with inside the grouting bag 21, and infuse
Starching pouch 21 has elasticity；Grouting Pipe 22 connect with grouting bag 21 and is embedded at hole in tube coupling 11, passes through Grouting Pipe 22
Slurries are injected into the slip casting space of grouting bag 21 so that grouting bag 21 is heaved and sealed to the outside of tube coupling 11 at hole
Gap at stifled hole between tube coupling 11 and main tunnel.
Slurries are injected into grouting bag by Grouting Pipe, the slurries injected fully enter in pouch, avoid slurries
Loss, and the grouting bag quickly heaved can the rough surface in blind, with main tunnel perfectly agree with, reach resistance
The purpose of breaking joint gap.Solve the problems, such as slurries be lost and the inefficient and of the invention closure knot of leak stopping especially suitable for
The biggish operating condition of gap, the risk that can effectively avoid water and soil from pouring in occur.
As a better embodiment of the invention, grouting bag 21 is set in the outer surface of tube coupling 11 at hole, and leads to
Cross the outer surface 111 that adhesive glue is adhered to tube coupling 11 at hole.Grouting bag 21 is fixed on tube coupling at hole by adhesive glue
On 11, so that the side of the grouting bag 21 is fixed with tube coupling 11 at hole by adhesive glue into grouting bag 21 after slip casting
Connection, the rough surface for being cut and being formed by push-bench on main tunnel is tightly attached to by internal slip casting in the other side, to block
Gap at main tunnel and hole between tube coupling 11.
Preferably, grouting bag 21 is set on tube coupling 11 and opposite with the section of jurisdiction at inlet and outlet cave on main tunnel at hole
It answers, so that grouting bag 21 can tightly be withstood on the section of jurisdiction in main tunnel after being propped up, to be marked with the grouting bag of slurries
21 have been folded at hole between tube coupling 11 and the section of jurisdiction in main tunnel, and will be at hole between tube coupling 11 and the section of jurisdiction in main tunnel
Gap plugging.Grouting bag 21 is set at hole the position that main tunnel incision is corresponded on tube coupling 11, the i.e. setting of grouting bag 21
The hole formed on position and the section of jurisdiction in main tunnel is corresponding.
As another better embodiment of the invention, the corresponding grouting bag 21 in the outer surface 111 of tube coupling 11 at hole
Position is equipped with an annular groove 113, which is arranged along the periphery of tube coupling 11 at hole；Grouting bag 21 has portion
Divide in insertion annular groove 113 and is adhesively fixed by adhesive glue and the slot bottom of annular groove 113.Utilize the annular groove of setting
Grouting bag is fixed, the connectivity robustness at grouting bag and hole between tube coupling can be improved, improves the steady of plugging structure
It is qualitative.
Preferably, the width of annular groove 113 is less than the width of grouting bag 21, so that being located at annular in grouting bag 21
Part outside groove 113 is more, and after injecting slurries into grouting bag 21, which can heave rapidly and fill
Gap.
As another better embodiment of the invention, grouting bag 21 is annular in shape, and the radian of the grouting bag 21
The radian for adapting to the gap between first and last shutdown 11 and main tunnel, so that grouting bag 21 can be good at blocking the gap.
As another better embodiment of the invention, fills out to set in Grouting Pipe 22 and be fixed with a seal ring 23, the sealing
Ring 23 is embedded at hole in tube coupling 11.
One end of Grouting Pipe 22 is connect with grouting bag 21, and the other end is formed at the inner surface 112 of tube coupling 11 at the hole
There is grouting port, by connecting slip casting pump line and grouting pump at the grouting port, it can be achieved that injecting slurries into grouting bag 21.By
It is arranged at hole in tube coupling 11 in Grouting Pipe 22, and has been connected to inner surface 112 and the outer surface 111 of tube coupling 11 at hole, from
And be to avoid seeping water at Grouting Pipe 22, a seal ring 23 is fixedly installed in Grouting Pipe 22, sealing is played by seal ring 23
Effect.
Preferably, Grouting Pipe 22 can be set one, also can be set multiple.
After utilization grouting bag 21 is by the gap plugging at hole between tube coupling 11 and the tube coupling in main tunnel, mountable main tunnel
Steel plate for sealing water at road and hole between tube coupling, and FS final spice of constructing, to complete the construction of service channel.
Polyethylene (PE, Polyethylene) can be used in the material of grouting bag 21 of the invention, and rubber also can be used.This
The grouting bag 21 of invention need to have certain deformability, as long as it is equal to be able to satisfy the high molecular material that certain ductility requires
It can be used for making grouting bag 21 of the invention.
The construction method of the plugging structure of bag type paste can be filled to tube coupling at service channel hole provided by the invention below
It is illustrated.
Tube coupling can fill the construction method of the plugging structure of bag type paste at service channel hole of the invention, including walk as follows
It is rapid:
When as depicted in figs. 1 and 2, using the service channel between the main tunnel of construction by pipeline jacking method two, provide with above-mentioned envelope
Tube coupling 11 at the hole of bridging structure 20, and tube coupling 11 at hole is assembled in place；
Injecting slurries into the slip casting space of grouting bag 21 by Grouting Pipe 22 makes grouting bag 21 at hole
It heaves and blocks the gap at hole between tube coupling 11 and main tunnel in the outside of tube coupling 11；And
Jointing at construction hole between tube coupling 11 and corresponding main tunnel, to complete the construction of service channel.
Tube coupling is the stem tube coupling and end portion tube coupling of service channel at hole therein, and service channel is that connection two is adjacent
Main tunnel between channel, the stem tube coupling and end portion tube coupling of service channel be connected to each other with the tube coupling in corresponding main tunnel, and
There are certain gaps between stem tube coupling and end portion tube coupling and the tube coupling in corresponding main tunnel, thus at connection stem tube coupling and end
When portion's tube coupling, which need to be blocked, the water and soil outside tube coupling is avoided to pour in tunnel internal.
Grouting bag 21 of the invention is sheathed at hole on tube coupling 11, and slip casting sky is formed with inside the grouting bag 21
Between, and grouting bag 21 has elasticity；Grouting Pipe 22 connect with grouting bag 21 and is embedded at hole in tube coupling 11, passes through note
Slurry pipe 22 inject slurries into the slip casting space of grouting bag 21 so that external drum from grouting bag 21 to tube coupling 11 at hole
It rises and blocks the gap at hole between tube coupling 11 and main tunnel.
As a better embodiment of the invention, when grouting bag 21 is connected with tube coupling 11 at corresponding hole,
In coating adhesive glue in grouting bag 21, and grouting bag 21 is adhered to the outer surface of tube coupling 11 at hole by adhesive glue
On.
Grouting bag 21 is fixed at hole on tube coupling 11 by adhesive glue, so that into grouting bag 21 after slip casting,
The side of the grouting bag 21 is fixedly connected with tube coupling 11 at hole by adhesive glue, and the other side is close to by internal slip casting
In being cut the rough surface to be formed on main tunnel by push-bench, to block the gap at main tunnel and hole between tube coupling 11.
Preferably, grouting bag 21 is set on tube coupling 11 and opposite with the section of jurisdiction at inlet and outlet cave on main tunnel at hole
It answers, so that grouting bag 21 can tightly be withstood on the section of jurisdiction in main tunnel after being propped up, to be marked with the grouting bag of slurries
21 have been folded at hole between tube coupling 11 and the section of jurisdiction in main tunnel, and will be at hole between tube coupling 11 and the section of jurisdiction in main tunnel
Gap plugging.
As another better embodiment of the invention, grouting bag 21 is being connected with tube coupling 11 at corresponding hole
When, an annular groove 113 is opened up at the position of corresponding 21 bags of the slip casting bag in the outer surface 111 of tube coupling 11 at the hole；
Grouting bag 21 is partially submerged into annular groove 113 and is adhesively fixed by adhesive glue with annular groove 113.
Grouting bag is fixed using the annular groove of setting, the connection at grouting bag and hole between tube coupling can be improved
Fastness improves the stability of plugging structure.
Preferably, the width of annular groove 113 is less than the width of grouting bag 21, so that being located at annular in grouting bag 21
Part outside groove 113 is more, and after injecting slurries into grouting bag 21, which can heave rapidly and fill
Gap.
As another better embodiment of the invention, grouting bag 21 is annular in shape, and its radian adapts at hole
The radian in the gap between tube coupling 11 and main tunnel.
It is fixed in embedded Grouting Pipe 22 in being arranged in Grouting Pipe 22 as another better embodiment of the invention
One seal ring 23, and seal ring 23 is embedded at hole in tube coupling 11 together with Grouting Pipe 22.
One end of Grouting Pipe 22 is connect with grouting bag 21, and the other end is formed at the inner surface 112 of tube coupling 11 at the hole
There is grouting port, by connecting slip casting pump line and grouting pump at the grouting port, it can be achieved that injecting slurries into grouting bag 21.By
It is arranged at hole in tube coupling 11 in Grouting Pipe 22, and has been connected to inner surface 112 and the outer surface 111 of tube coupling 11 at hole, from
And be to avoid seeping water at Grouting Pipe 22, a seal ring 23 is fixedly installed in Grouting Pipe 22, sealing is played by seal ring 23
Effect.
Preferably, Grouting Pipe 22 can be set one, also can be set multiple.
After utilization grouting bag 21 is by the gap plugging at hole between tube coupling 11 and the tube coupling in main tunnel, mountable main tunnel
Steel plate for sealing water at road and hole between tube coupling, and FS final spice of constructing, to complete the construction of service channel.
Polyethylene (PE, Polyethylene) can be used in the material of grouting bag 21 of the invention, and rubber also can be used.This
The grouting bag 21 of invention need to have certain deformability, as long as it is equal to be able to satisfy the high molecular material that certain ductility requires
It can be used for making grouting bag 21 of the invention.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (10)
1. tube coupling can fill the plugging structure of bag type paste at a kind of service channel hole characterized by comprising
The grouting bag being sheathed at hole on tube coupling is formed with slip casting space, and the slip casting bag inside the grouting bag
Bag has elasticity；And
The Grouting Pipe at the hole in tube coupling is connect and is embedded in the grouting bag, by the Grouting Pipe to the note
It starches and injects slurries in the slip casting space of pouch so that the grouting bag is heaved and blocked to the outside of tube coupling at the hole
Gap at the hole between tube coupling and main tunnel.
2. plugging structure as described in claim 1, which is characterized in that the grouting bag is adhered to the hole by adhesive glue
Locate the outer surface of tube coupling.
3. plugging structure as claimed in claim 1 or 2, which is characterized in that described in the outer surface of tube coupling corresponds at the hole
The position of grouting bag is equipped with an annular groove；
The grouting bag, which has, to be partially submerged into the annular groove and Nian Jie with the slot bottom of the annular groove by adhesive glue
It is fixed.
4. plugging structure as described in claim 1, which is characterized in that the grouting bag is annular in shape, and its radian is adapted to
The radian in the gap at the hole between tube coupling and main tunnel.
5. plugging structure as described in claim 1, which is characterized in that it is arranged in the Grouting Pipe and is fixed with a seal ring, institute
Seal ring is stated to be embedded at the hole in tube coupling.
6. tube coupling can fill the construction method of the plugging structure of bag type paste at a kind of service channel hole, which is characterized in that including
Following steps:
When using service channel between the main tunnel of construction by pipeline jacking method two, the hole with plugging structure described in claim 1 is provided
Tube coupling at mouthful, and in place by tube coupling assembly at the hole；
Injecting slurries into the slip casting space of the grouting bag by the Grouting Pipe makes the grouting bag to hole
It heaves and blocks the gap at the hole between tube coupling and main tunnel in the outside of place's tube coupling；And
The jointing constructed at the hole between tube coupling and corresponding main tunnel, to complete the construction of service channel.
7. construction method as claimed in claim 6, which is characterized in that connecting grouting bag with tube coupling at corresponding hole
When, in coating adhesive glue in the grouting bag, and the grouting bag is adhered at the hole by the adhesive glue
On the outer surface of tube coupling.
8. construction method as claimed in claims 6 or 7, which is characterized in that by grouting bag and tube coupling at corresponding hole
When connection, an annular groove is opened up at the position that the outer surface of tube coupling corresponds to the grouting bag at the hole；
The grouting bag is partially submerged into the annular groove and is adhesively fixed by adhesive glue and the annular groove.
9. construction method as claimed in claim 6, which is characterized in that the grouting bag is annular in shape, and its radian is adapted to
The radian in the gap at the hole between tube coupling and main tunnel.
10. construction method as claimed in claim 6, which is characterized in that when burying the Grouting Pipe, in the Grouting Pipe
It is arranged and is fixed with a seal ring, and the seal ring is embedded at the hole in tube coupling together with the Grouting Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004982.6A CN109268031A (en) | 2018-08-30 | 2018-08-30 | Tube coupling can fill the plugging structure and construction method of bag type paste at service channel hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004982.6A CN109268031A (en) | 2018-08-30 | 2018-08-30 | Tube coupling can fill the plugging structure and construction method of bag type paste at service channel hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109268031A true CN109268031A (en) | 2019-01-25 |
Family
ID=65154665
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811004982.6A Pending CN109268031A (en) | 2018-08-30 | 2018-08-30 | Tube coupling can fill the plugging structure and construction method of bag type paste at service channel hole |
Country Status (1)
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| CN (1) | CN109268031A (en) |
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| CN114857367A (en) * | 2022-04-02 | 2022-08-05 | 中国一冶集团有限公司 | Post-grouting expansive underground pipeline joint plugging structure |
| CN115126933A (en) * | 2022-06-24 | 2022-09-30 | 上海公路桥梁（集团）有限公司 | Sealing device between pipe joints and use method of sealing device |
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| CN109763837A (en) * | 2019-02-28 | 2019-05-17 | 中国水利水电第四工程局有限公司 | A kind of TBM tunnel film bag cement stops paste structure and construction method |
| CN114857367A (en) * | 2022-04-02 | 2022-08-05 | 中国一冶集团有限公司 | Post-grouting expansive underground pipeline joint plugging structure |
| CN115126933A (en) * | 2022-06-24 | 2022-09-30 | 上海公路桥梁（集团）有限公司 | Sealing device between pipe joints and use method of sealing device |
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Application publication date: 20190125 |
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