CN207761667U - A kind of supporting construction for tunnel reconstruction and extension project - Google Patents
A kind of supporting construction for tunnel reconstruction and extension project Download PDFInfo
- Publication number
- CN207761667U CN207761667U CN201820164709.9U CN201820164709U CN207761667U CN 207761667 U CN207761667 U CN 207761667U CN 201820164709 U CN201820164709 U CN 201820164709U CN 207761667 U CN207761667 U CN 207761667U
- Authority
- CN
- China
- Prior art keywords
- protecting assembly
- branch protecting
- vertical branch
- tunnel
- pipe fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of supporting construction for tunnel reconstruction and extension project, it solves tunnel structure reorganization and expansion construction and needs to put into a large amount of manpowers, equipment and financial resources, and the problem of easy ting produce construction risk, it is formed with " diaphram wall " structure for preventing lateral deformation of effect by branch protecting assembly, construction and stabilization, technical solution to meet soft stratum or the tunnel structure reorganization and expansion of shallow embedding location are：Including the first vertical branch protecting assembly and the second vertical branch protecting assembly, it is spaced setpoint distance between the first vertical branch protecting assembly and the second vertical branch protecting assembly, the first vertical branch protecting assembly and the second vertical branch protecting assembly include Multi-row-tube group, include multiple horizontally disposed first pipe fittings successively from top to bottom per tubulation group, there is setting spacing between the center line of adjacent tubulation group；Semi-circular branch protecting assembly is set between the first vertical branch protecting assembly and the second vertical branch protecting assembly.
Description
Technical field
The utility model is related to Geotechnical Engineering fields, more particularly to a kind of supporting for tunnel reconstruction and extension project
Structure.
Background technology
With the fast development of Chinese national economy, volume of traffic rapid development, some build highway of the remote past, even
Be highway tunnel since design standard is relatively low, the traffic capacity cannot meet growing transport need, to influence
Economic fast development, needs the reorganization and expansion to can be only achieved corresponding service level.Again, compared to building a new tunnel again
For, tunnel reorganization and expansion carries out on the basis of original tunnel, has excavated volume few, with can refer to engineering when just building
The data such as matter, hydrogeology, or the position for directly serious plant disease occur in tunnel carry out supplement survey, can save and largely survey
Look into work.
Tunnel is different from ground structure, therefore answers the actual conditions of incorporation engineering comprehensive the modified threshold of established tunnel
Demonstration is closed, most rational reorganization and expansion mode is sought.Meanwhile in tunnel reconstruction and extension project, due to carrying out one to existing tunnel structure
Enlarging is removed in side or both sides, causes tunnel surrounding to be exposed in air in non-support, seriously affects the steady of tunnel structure
It is qualitative.If effective ways cannot be taken to be closed tunnel surrounding and be subject to supporting, tunnel structure necessarily leads to moderate finite deformation, harm
Tunnel operation and people's life.Therefore, it is necessary to propose fast and effectively supporting construction to tunnel reconstruction and extension project, work is met with this
Safe, the quick and requirement stablized of range request.
In conclusion in the prior art tunnel structure reorganization and expansion construction is needed to put into a large amount of manpowers, equipment and financial resources,
And the problem of easy ting produce construction risk, still lack effective solution scheme.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of branch for tunnel reconstruction and extension project
Protection structure is formed with " diaphram wall " structure for preventing lateral deformation of effect by branch protecting assembly, to meet soft stratum
Or construction and the stabilization of shallow embedding location tunnel structure reorganization and expansion；
Further, the utility model uses following technical proposals：
A kind of supporting construction for tunnel reconstruction and extension project, including the first vertical branch protecting assembly and the second vertical supporting group
Part is spaced setpoint distance, the first vertical supporting group between the first vertical branch protecting assembly and the second vertical branch protecting assembly
Part and the second vertical branch protecting assembly include Multi-row-tube group, include multiple from top to bottom successively horizontally disposed the per tubulation group
One pipe fitting has setting spacing between the center line of adjacent tubulation group；The first vertical branch protecting assembly and the second vertical supporting
Semi-circular branch protecting assembly is set between component.
Further, there is setpoint distance between adjacent first pipe fitting of same pipe group.
Further, first pipe fitting of adjacent tubulation group is laid staggeredly.
Further, first pipe fitting is connected in sequence by more pipes, passes through casing connection between adjacent tubes.
Further, the described first vertical branch protecting assembly and the second vertical branch protecting assembly are higher by semi-circular supporting module sets
Highly.
Further, the semi-circular branch protecting assembly is at a distance from the first vertical branch protecting assembly, the second vertical branch protecting assembly
It is equal.
Further, the semi-circular branch protecting assembly includes multiple rows of return bend group, and it includes more often to arrange return bend group
A be arranged in order is surrounded by semicircular second pipe fitting.
Further, there is setting spacing between the center line of return bend group described in adjacent row.
Further, it is surrounded by between semicircular adjacent second pipe fitting with setpoint distance.
Further, second pipe fitting of adjacent row return bend group is laid staggeredly.
Further, second pipe fitting is horizontally disposed.
Further, second pipe fitting is connected in sequence by more pipes, passes through casing connection between adjacent tubes.
A kind of in order to overcome the deficiencies of the prior art, the utility model provides supporting knot for tunnel reconstruction and extension project
The construction method of structure, includes the following steps：
1) be prefabricated in the factory the first pipe fitting and the second pipe fitting, and transports it into construction site；
2) drill hole of drilling machine at the construction field (site), is utilized；Drilling interval carries out, and even hole is bored in subdrilling odd number hole afterwards；
3) in default reorganization and expansion tunnel both sides, the first vertical branch protecting assembly is installed respectively and the second vertical branch protecting assembly is gone forward side by side
Row slip casting forms vertical continuous underground wall structure；
4) further along default reorganization and expansion tunnel top boundary, 2~3m drillings laying semi-circular supporting above the boundary of top
Component and slip casting, to form circumferential continuous underground wall structure.
Compared with prior art, the utility model has the beneficial effects that：
Vertical and circumferential " diaphram wall " structure is formed by vertical branch protecting assembly and semi-circular branch protecting assembly, enduringly
The stability for improving tunnel reorganization and expansion region country rock, efficiently reduces the deformation on tunnel stratum during reorganization and expansion；Also, it will
It shortens the construction period, reduce engineering cost, and be adapted to the unfavorable geological conditions such as a variety of soft stratums, shallow embedding stratum, have
There is controllability.
(1) in terms of Tunnel Stability：The scope of application of tunnel reconstruction and extension project can be effectively improved, tunnel is reduced and changes expansion
The unstable failure on stratum, enduringly raising tunnel surrounding self-stability energy during building, ensure tunnel reorganization and expansion construction and operation phase
Between personnel safety and equipment operation.
(2) in terms of geological conditions adaptability：The unfavorable geological conditions such as a variety of soft stratums, shallow embedding stratum are adapted to, are had
Controllability.
(3) in terms of construction：Branch protecting assembly improves production efficiency completely by precast plant according to design drawing processing and fabricating,
Reduce the pollution to construction environment, and daguanpeng construction technical maturity, convenient and efficient.Vertical branch protecting assembly and semi-circular supporting
Component forms vertical and circumferential " diaphram wall " structure, compared with conventional tunnel reorganization and expansion is constructed, shortens the construction period, subtracts
Lack that engineering cost, construction technology are simple to operation, and durability is strong.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the front view of vertical branch protecting assembly；
Fig. 2 is that tunnel reorganization and expansion has been constructed the plan view of the first vertical branch protecting assembly；
Fig. 3 is that tunnel reorganization and expansion has been constructed the plan view of the second vertical branch protecting assembly；
Fig. 4 is that tunnel reorganization and expansion has been constructed the plan view of semi-circular branch protecting assembly；
Fig. 5 is the plan view that tunnel reorganization and expansion tunnel ends completion；
In figure, the 1, first vertical branch protecting assembly；2, the tunnel structure of reorganization and expansion is needed；3, the second vertical branch protecting assembly；4、
Semi-circular branch protecting assembly；5, the tunnel structure after the completion of reorganization and expansion, the 6, first pipe fitting, the 7, second pipe fitting.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, tunnel structure reorganization and expansion construction exists in the prior art and needs to put into a large amount of people
The problem of power, equipment and financial resources, in order to solve technical problem as above, present applicant proposes one kind being used for tunnel reconstruction and extension project
Supporting construction, efficiently controlled tunnel reorganization and expansion construction risk, various formation tunnel entrances, shallow can effectively be adapted to by having
Buried section of equal unfavorable geological conditions.The supporting construction of the application is particularly suitable for soft stratum or shallow embedding formation tunnel reorganization and expansion work
Cheng Zhong, to meet construction and the stabilization of soft stratum or the tunnel structure reorganization and expansion of shallow embedding location.
In a kind of typical embodiment of the application, as shown in figure 4, the setting that Fig. 4 is the application supporting construction is shown
It is intended to, this application provides a kind of supporting construction for tunnel reconstruction and extension project, including the first vertical branch protecting assembly 1 and second
Vertical branch protecting assembly 3, is spaced setpoint distance between the 1 and second vertical branch protecting assembly 3 of the first vertical branch protecting assembly, and described the
One vertical branch protecting assembly, 1 and second vertical branch protecting assembly 3 includes Multi-row-tube group, include per tubulation group it is multiple from top to bottom according to
First pipe fitting 6 of sub-level setting has setting spacing between the center line of adjacent tubulation group；The first vertical branch protecting assembly
1 and second protecting assembly of setting semi-circular branch between vertical branch protecting assembly 34.It can be with by adjusting the reinforcing height of each branch protecting assembly
The mountain ridge stratum that height rises and falls is adapted to, to reach the monolithic stability of structure.
There is setpoint distance between adjacent first pipe fitting 6 of same pipe group.
First pipe fitting 6 of adjacent tubulation group is laid staggeredly.I.e. for two vertical branch protecting assemblies, make the first pipe fitting by plum
Flower stake mode arranges that arrangement can play reinforcement effect not only for the non-uniform stratum of rock soil medium mechanical strength, and
And also effectively control lateral deformation in tunnel reorganization and expansion construction.
First pipe fitting 6 is connected in sequence by more pipes, passes through casing connection between adjacent tubes.
First vertical branch protecting assembly, the 1 and second vertical branch protecting assembly 3 is higher by 4 setting height of semi-circular branch protecting assembly.
The semi-circular branch protecting assembly 4 is equal at a distance from the first vertical branch protecting assembly 1, the second vertical branch protecting assembly 3.
That is, semi-circular branch protecting assembly 4 is set to the intermediate position between the first vertical branch protecting assembly 1, the second vertical branch protecting assembly 3, half
Annular branch protecting assembly 4 is equal to semi-circular branch protecting assembly 4 and the second vertical branch protecting assembly 3 at a distance from the first vertical branch protecting assembly 1
Distance.
The semi-circular branch protecting assembly 4 includes multiple rows of return bend group, often arranges return bend group and is arranged successively including multiple
Row are surrounded by semicircular second pipe fitting 7.
There is setting spacing between the center line of return bend group described in adjacent row.
It is surrounded by between semicircular adjacent second pipe fitting 7 with setpoint distance.
Second pipe fitting 7 of adjacent row return bend group is laid staggeredly.I.e. for semi-circular branch protecting assembly, make the second pipe
Part is arranged that arrangement can play reinforcing not only for the non-uniform stratum of rock soil medium mechanical strength and make by quincuncial pile mode
With, but also effectively lateral deformation in control tunnel reorganization and expansion construction.
Second pipe fitting 7 is horizontally disposed.
Second pipe fitting 7 is connected in sequence by more pipes, passes through casing connection between adjacent tubes.
The two vertical branch protecting assemblies and semi-circular branch protecting assembly of the application are pressed steel tube shed support form and are laid, and big pipe is formed
Canopy curtain band.
In the present embodiment, the first pipe fitting 6 and 7 equal length of the second pipe fitting are 20.0m (φ 108mm × 6mm), two vertical supportings
Component laying is located within the scope of 2~4m of tunnel reorganization and expansion both sides, respectively uses two tubulation groups, circumferential spacing 20cm between pipe group,
The vertical branch protecting assembly in both sides can form effective " diaphram wall " structure, control soft stratum or shallow embedding location country rock is lateral
Deformation reduces the unstable failure to tunnel structure, ensures both sides adjoining rock stability in tunnel reorganization and expansion work progress, will not be to building
Engineering generates lateral deformation harm；Semi-circular branch protecting assembly 4 is laid along tunnel Reformed and expanded plan design boundary, by the laying of three comb groups
At circumferential spacing 20cm, effectively controls in tunnel reorganization and expansion work progress, the sedimentation and deformation and ground of tunnel top country rock between pipe group
Layer deformation, reduces the harmfulness to engineering construction.After the above support system is formed, tunnel reorganization and expansion work can be effectively improved
The scope of application of journey reduces tunnel instability and destroys, enduringly improves tunnel surrounding self-stability energy, ensures that tunnel reorganization and expansion was constructed
Tunnel top adjoining rock stability in journey not will produce larger surrouding rock deformation or cave in, the personnel during ensureing constructing tunnel and runing
Safety and equipment operation.
In order to ensure that the stability on stratum, the vertical branch protecting assembly in tunnel both sides are symmetrically set in the both sides in tunnel after reorganization and expansion.
First pipe fitting 6 and the second pipe fitting 7 are tempering pipe, (are connected in sequence by more piece pipe, are often saved per root long 20.0m
Long 6.0m, using long 89.0cm casing connections), the every section of overlap joint 1.5m that should interlock, spacing 15.0cm plum blossoms are pressed on steel pipe when applying
Shape bores the aperture of 10.0mm.First segment steel pipe top is made tapered, and so as to jacking, steel pipe is coupled using casing.
Semi-circular branch protecting assembly 4 is set to reorganization and expansion tunnel top, apart from reorganization and expansion tunnel top 2.0m-3.0m.
In the typical embodiment of another kind of the application, a kind of supporting construction for tunnel reconstruction and extension project is provided
Construction method, include the following steps：
1) be prefabricated in the factory the first pipe fitting and the second pipe fitting, and transports it into construction site；
2) it at the construction field (site), is drilled according to branch protecting assembly artwork using drilling machine；To ensure hole quality, adjacent hole drill is prevented
Into when before pore-forming cave in, drilling interval carries out, and even hole is bored in subdrilling odd number hole afterwards, and drilling diameter is φ 140mm；
3) in default reorganization and expansion tunnel both sides, the first vertical branch protecting assembly is installed respectively and the second vertical branch protecting assembly is gone forward side by side
Row slip casting forms vertical continuous underground wall structure；
4) further along default reorganization and expansion tunnel top boundary, 2~3m drillings laying semi-circular supporting above the boundary of top
Component and slip casting, to form circumferential continuous underground wall structure.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail in the embodiment of body.
First pipe fitting 6 and the second pipe fitting 7 are all made of the seamless steel pipe of Φ 108, and steel pipe uses the piecewise spreading of 3m, 6m tube coupling,
Jointing uses heavy wall hoop, and upper full screw thread, screw thread length is 15cm；To ensure that uniform force, coupling should be longitudinal wrong
It opens；After steel pipe is placed in trolley large arm, rock drill is directed at the guide hole being drilled, low-speed propulsion steel pipe, impact force control
System is controlled in 18~20MPa, propelling pressure in 4.0~6.0MPa；It, will by design for the rigidity and intensity of strengthening supporting component
After branch protecting assembly steel pipe is all accomplished fluently, residue in most steel pipe first is drawn with drill bit, carries out canopy pipe reinforcement.
After the completion of penstock installation, the stirring of grout injection, cement mortar should carry out in homogenizer, in strict accordance with applying
Work match ratio feeds intake, the cementing waterglass slurries in steel pipe, and proportioning is cement:Waterglass=1:1, cement pulp-water ash
Than 1:1, modulus of water glass m=2.4, concentration Be=35,0.5~1MPa of first pressing when slip casting, final pressure 2.0Mpa are used after slip casting
1:1 cement mortar fills seamless steel pipe, to enhance steel strength and rigidity.When grout absorption is less than 20~25L/min；Grouting pressure
It is stepped up, stablizes 10min or more after reaching design final pressure；1 is used after slip casting：1 cement mortar fills seamless steel pipe.It is complete
After branch protecting assembly mortar depositing construction, under the protection of pipe shed support, excavated by the construction procedure of design.
In order to ensure that the stability in reorganization and expansion tunnel, 1 and second vertical branch protecting assembly 3 of the first vertical branch protecting assembly are symmetrically set
The both sides of tunnel structure 5 after the completion of the reorganization and expansion, as shown in Figure 3.
It is formed as shown in figure 4, semi-circular branch protecting assembly 4 is surrounded by semicircular steel pipe by three rows, steel pipe presses quincuncial pile
It lays, circumferential spacing 20cm.
The structure of the utility model can form effective " diaphram wall " structure, control by the vertical branch protecting assembly in both sides
Soft stratum processed or the country rock lateral deformation of shallow embedding location reduce the unstable failure to tunnel structure；On the other hand, change expansion along tunnel
It builds meter boundary and lays semi-circular branch protecting assembly, circumferential spacing 20cm is effectively controlled in tunnel reorganization and expansion work progress, tunnel top
The sedimentation and deformation and stratum deformation of portion's country rock reduce the harmfulness to engineering construction.After the above support system is formed, Neng Gouyou
Effect ground improves the scope of application of tunnel reconstruction and extension project, reduces tunnel instability and destroys, enduringly improves tunnel surrounding self-stability energy.
The process that reorganization and expansion tunnel is carried out using the application supporting construction is：
(1) the first vertical supporting establishment of component on the left of reorganization and expansion tunnel；
The first vertical branch protecting assembly distance needs the 2 left side 3.0m of tunnel structure of reorganization and expansion on the left of reorganization and expansion tunnel, by two
The circumferential spacing 20.0cm steel tube sheds composition of row, highly for more than reorganization and expansion tunnel height 5.0m.
(2) the second vertical supporting establishment of component on the right side of reorganization and expansion tunnel；
5 right side of tunnel structure on the right side of reorganization and expansion tunnel after the completion of the second vertical branch protecting assembly distance design reorganization and expansion
2.0m is made of two rows of circumferential spacing 20.0cm steel tube sheds, highly for more than reorganization and expansion tunnel height 5.0m.
(3) along reorganization and expansion tunnel radial direction semi-circular supporting establishment of component；
Along reorganization and expansion tunnel, radial direction semi-circular branch protecting assembly is the 5 top boundary of tunnel structure after the completion of design reorganization and expansion
It lays, is made of three row's circumferential direction spacing 20.0cm steel tube sheds.
(4) reorganization and expansion tunnel excavation；
After supporting construction, which is formed, to be stablized, tunnel reorganization and expansion construction is carried out according to design drawing.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (9)
1. a kind of supporting construction for tunnel reconstruction and extension project, characterized in that perpendicular including the first vertical branch protecting assembly and second
To branch protecting assembly, setpoint distance is spaced between the first vertical branch protecting assembly and the second vertical branch protecting assembly, described first is perpendicular
Include Multi-row-tube group to branch protecting assembly and the second vertical branch protecting assembly, includes multiple horizontal successively from top to bottom per tubulation group
The first pipe fitting being arranged has setting spacing between the center line of adjacent tubulation group；The first vertical branch protecting assembly and second
Semi-circular branch protecting assembly is set between vertical branch protecting assembly.
2. supporting construction as described in claim 1, characterized in that have between adjacent first pipe fitting of same pipe group and set
Set a distance.
3. supporting construction as described in claim 1, characterized in that first pipe fitting of adjacent tubulation group is laid staggeredly.
4. supporting construction as described in claim 1, characterized in that first pipe fitting is connected in sequence by more pipes, phase
Pass through casing connection between adjacent pipe.
5. supporting construction as described in claim 1, characterized in that the first vertical branch protecting assembly and the second vertical supporting group
Part is higher by semi-circular supporting module sets height；The semi-circular branch protecting assembly and the first vertical branch protecting assembly, the second vertical branch
The distance of protecting assembly is equal.
6. supporting construction as described in claim 1, characterized in that the semi-circular branch protecting assembly includes multiple rows of return bend
Group often arranges return bend group and is surrounded by semicircular second pipe fitting including multiple be arranged in order.
7. supporting construction as claimed in claim 6, characterized in that have between the center line of return bend group described in adjacent row
Set spacing；It is surrounded by between semicircular adjacent second pipe fitting with setpoint distance.
8. supporting construction as claimed in claim 6, characterized in that second pipe fitting of adjacent row return bend group interlocks cloth
If.
9. supporting construction as claimed in claim 6, characterized in that second pipe fitting is horizontally disposed；Second pipe fitting by
More pipes are connected in sequence, and pass through casing connection between adjacent tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820164709.9U CN207761667U (en) | 2018-01-31 | 2018-01-31 | A kind of supporting construction for tunnel reconstruction and extension project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820164709.9U CN207761667U (en) | 2018-01-31 | 2018-01-31 | A kind of supporting construction for tunnel reconstruction and extension project |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207761667U true CN207761667U (en) | 2018-08-24 |
Family
ID=63179716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820164709.9U Expired - Fee Related CN207761667U (en) | 2018-01-31 | 2018-01-31 | A kind of supporting construction for tunnel reconstruction and extension project |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207761667U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397210A (en) * | 2018-01-31 | 2018-08-14 | 山东大学 | A kind of supporting construction and method for tunnel reconstruction and extension project |
| CN109695457A (en) * | 2018-12-21 | 2019-04-30 | 中铁四局集团有限公司 | The enlarging large section tunnel in situ and step construction method of hard rock |
| CN110994523A (en) * | 2019-12-31 | 2020-04-10 | 广东顺德电力设计院有限公司 | Method and system for protecting cable |
-
2018
- 2018-01-31 CN CN201820164709.9U patent/CN207761667U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397210A (en) * | 2018-01-31 | 2018-08-14 | 山东大学 | A kind of supporting construction and method for tunnel reconstruction and extension project |
| CN108397210B (en) * | 2018-01-31 | 2024-02-27 | 山东大学 | Supporting structure and method for tunnel reconstruction and expansion engineering |
| CN109695457A (en) * | 2018-12-21 | 2019-04-30 | 中铁四局集团有限公司 | The enlarging large section tunnel in situ and step construction method of hard rock |
| CN110994523A (en) * | 2019-12-31 | 2020-04-10 | 广东顺德电力设计院有限公司 | Method and system for protecting cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021223573A1 (en) | Construction structure for communication and connection between newly added mined channel and existing station hall layer | |
| CN106351662B (en) | Cellular-type segmenting slip casting reinforcement means, construction method and application | |
| CN108166486B (en) | Deep buried pipe type prefabricated energy pipe pile and construction process thereof | |
| CN207761667U (en) | A kind of supporting construction for tunnel reconstruction and extension project | |
| CN112323823B (en) | Filling device and method for waste air-raid shelter of pile foundation construction site | |
| CN101280568A (en) | Station pit construction method forming protection for neighboring operated subway interval tunnel | |
| CN105256812B (en) | Foundation ditch prefabricated assembled concrete supporting construction and its construction method | |
| CN103422501A (en) | Anti-floating anchor structure in sand layer geology and construction method thereof | |
| CN106522989A (en) | Air shaft structure and shield excavation parallel construction method | |
| WO2020143066A1 (en) | Geothermal exploitation system and construction method therefor | |
| CN106088102A (en) | Lattice combined steel plate pile cement-soil composite pile and construction method thereof | |
| CN112727466A (en) | Construction method for support-free prefabricated assembled type shield tunnel air shaft structure | |
| CN115182737A (en) | Vertical orthogonal ejection type air duct structure of deep-buried subway station and construction method | |
| CN206204972U (en) | A kind of prefabricated tubular pile as well-points dewatering | |
| CN103437779B (en) | The construction method of regulation tunnel lining pore gas flow | |
| CN207904917U (en) | Deep layer buried tube type prefabrication type energy pile pile | |
| CN101793027B (en) | Core-grouted static pressure anchor rod pile | |
| CN205382942U (en) | Multilayer underground space curtain posture subsurface excavated construction's supporting construction under existing facility | |
| CN108397210A (en) | A kind of supporting construction and method for tunnel reconstruction and extension project | |
| CN106979635A (en) | A kind of earth-source hot-pump system underground heat-transfer pipe construction method | |
| CN110017155A (en) | A kind of coal working face top plate rich water gravel layer grouting and reinforcing erection water-proof method | |
| CN211006701U (en) | Foundation pit supporting structure integrating pile and wall | |
| CN109736843B (en) | Reverse waterproof method for assembling and pouring two linings of small template | |
| CN108952758B (en) | Sand layer grouting ground surface lifting control method based on borehole collapse and induced splitting | |
| CN209959261U (en) | Real-time feedback grouting device for correcting horizontal deformation of subway tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20190131 |