CN109296825A - Major diameter bell and spigot water supply concrete pipe suspension protection system and its construction method - Google Patents
Major diameter bell and spigot water supply concrete pipe suspension protection system and its construction method Download PDFInfo
- Publication number
- CN109296825A CN109296825A CN201811148162.4A CN201811148162A CN109296825A CN 109296825 A CN109296825 A CN 109296825A CN 201811148162 A CN201811148162 A CN 201811148162A CN 109296825 A CN109296825 A CN 109296825A
- Authority
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- China
- Prior art keywords
- concrete
- water supply
- major diameter
- bell
- spigot
- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 239000000725 suspension Substances 0.000 title claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000009412 basement excavation Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/02—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
- F16L3/133—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and hanging from a pendant
Abstract
The present invention relates to major diameter bell and spigot water supply concrete pipe suspension protection system and its construction methods; structure includes the foundation pit supporting construction of both lateral sides and its longitudinal concrete crown beam of top setting in main body foundation pit; just beam body system of the army of building between the concrete crown beam of two sides; just beam body system lower section setting sunpender suspends lateral major diameter bell and spigot water supply concrete pipe in midair for army, and major diameter bell and spigot water supply concrete pipe is provided with concrete bearing.The present invention proposes the safe suspension protection measure of major diameter bell and spigot water supply concrete pipe, meets the stabilization security requirement of pipeline, while matching underground engineering construction process, and easy construction is flexible, improves work efficiency.
Description
Technical field
The invention belongs to Construction Technique of Underground Works fields, and in particular to a kind of major diameter bell and spigot water supply concrete pipe suspention guarantor
Watch box system and its construction method.
Background technique
With the extensive use of the underground engineerings such as urban track traffic, railway, municipal underpass, complicated underground ring
Border, spatial relationship and structure type propose more strict requirements to the construction of underground engineering.
Huge and complicated underground utilities Structure Network is inevitably encountered in underground engineering design and work progress.For
Major diameter bell and spigot water supply concrete pipe crosses the environment of underground structure, conventional pipeline move change way may be by pipeline self-condition
The influence of factor, the space limitation of periphery existing buildings and duration budget is without performing condition, and bell and spigot formula pipeline
In joint, deformation requirements are stringent, and conventional suspension protection measure is very risky.It, should be real using meeting for such special circumstances
The conduit wiring suspension safeguard measure of border implementation condition, to meet construction requirement.
Summary of the invention
The object of the present invention is to provide a kind of major diameter bell and spigot water supply concrete pipe suspension protection system and its construction methods, adopt
Bearing pile is taken to fix pipeline both ends, just beam is carried out suspension protection, added using pipeline leakage plugging device+total incapsulation concrete support at bell socket for army
Gu meeting the stabilization security requirement of pipeline.
The technical scheme adopted by the invention is as follows:
Major diameter bell and spigot water supply concrete pipe suspension protection system, it is characterised in that:
Longitudinal concrete crown beam of foundation pit supporting construction and its top setting including both lateral sides in main body foundation pit, two sides are mixed
Just beam body system of the army of building between solidifying soil crown beam, just setting sunpender suspends lateral major diameter bell and spigot water supply concrete in midair below beam body system for army
Pipe, major diameter bell and spigot water supply concrete pipe are provided with concrete bearing.
It is supported below major diameter bell and spigot water supply concrete pipe both lateral sides end by the bearing pile on the outside of main body foundation pit.
Concrete connecting-beam is provided between at the top of longitudinally adjacent bearing pile.
Major diameter bell and spigot water supply concrete pipe, which is sequentially connected by multiple segments by Push-fit, to be formed, and pipeline socket is additional
Pipeline leakage plugging device is filled, the concrete bearing in outside is total incapsulation concrete bearing.
Pipeline socket is using the concrete bearing of outer portion as half encapsulating of lower half on major diameter bell and spigot water supply concrete pipe
Concrete bearing.
Total incapsulation concrete bearing and half encapsulating concrete bearing lateral connection are integral.
Concrete connecting-beam at the top of bearing pile is poured with concrete bearing to be integrated.
The construction method of major diameter bell and spigot water supply concrete pipe suspension protection system, it is characterised in that:
It is realized by following steps:
Step 1: the foundation pit supporting construction of construction main body foundation pit；
Step 2: small foundation pit is excavated in advance on the outside of main body foundation pit, two carryings are respectively arranged in major diameter bell and spigot water supply concrete pipe two sides
Stake is drilled pile, major diameter bell and spigot water supply concrete pipe is fixed, in pipe when being excavated to major diameter bell and spigot water supply concrete tube bottom
Heelpiece sets interim I-shaped bridle iron；
Step 3: concrete connecting-beam is arranged in two carrying pile heads, supplies water to the major diameter bell and spigot within the scope of the small foundation pit in two sides
Concrete pipe carries out concrete pack, first installs pipeline leakage plugging device at bell and spigot additional, and outside is arranged total incapsulation concrete bearing, sets at non-bell and spigot
Half encapsulating concrete bearing is set, concrete connecting-beam pours connection one with half encapsulating concrete bearing and total incapsulation concrete bearing
Body is completed major diameter bell and spigot water supply concrete pipe both ends and is fixed；
Step 4: main body foundation pit is integrally excavated to major diameter bell and spigot water supply concrete tube top, verifies bell and spigot accurate location；
Step 5: excavation section by section junction portion sets interim I-shaped bridle iron in tube bottom pad, performs pipeline leakage plugging device and Quan Bao at bell and spigot
Sealing concrete support, just beam slings major diameter bell and spigot water supply concrete pipe fitting for the army of performing, and bracing reinforcement between bar is arranged between sunpender,
Just beam-ends head is fixed in concrete crown beam for army；
Step 6: excavation section by section remainder major diameter bell and spigot water supply concrete pipe performs half encapsulating concrete bearing, the army of performing is just
Beam slings major diameter bell and spigot water supply concrete pipe, bracing reinforcement between bar is arranged between sunpender, just beam-ends head is fixed on concrete hat for army
Liang Shang.
The invention has the following advantages that
1, mainly using army, just beam body system carries out suspension protection to major diameter bell and spigot water supply concrete pipe to the present invention, is pipe at bell and spigot
Road weak spot, being also easy to produce deformation leads to pipeline break, and the present invention installs pipeline leakage plugging device additional at bell and spigot, is encapsulated using concrete support, together
When, at pipeline both ends, setting bearing pile is fixed, and guarantees pipeline suspension safety.The method is on the basis for not changing existing pipeline
On can carry out the constructions of successive projects, solve the problems, such as that major diameter bell and spigot conduit wiring suspension security risk is big.
2, working procedure matches underground engineering routine engineering method, and the easy flexible, strong operability of working procedure does not increase the duration,
It is adaptable, securely and reliably.
3, more conventional conduit wiring suspension protection, the small foundation pit in two sides, army just beam and concrete support will be added by excavating protective owner,
It is less to increase investment.Have in the underground concrete structures engineerings such as urban track traffic, railway, municipal underpass and widely answers
Use prospect.
Detailed description of the invention
Fig. 1 is suspension protection system assumption diagram of the invention.
Fig. 2 is pipe joint position conduit wiring suspension drawing of the invention.
Fig. 3 is pipeline standard depot siding suspention drawing of the invention.
In figure, 1- foundation pit supporting construction, 2- bearing pile, 3- major diameter bell and spigot water supply concrete pipe, 4- pipeline socket, 5- is complete
Concrete bearing, 6- pipeline leakage plugging device are encapsulated, 7- partly encapsulates concrete bearing, just beam body system of 8- army, 9- sunpender, 10- concrete crown beam,
11- concrete connecting-beam.
Specific embodiment
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of major diameter bell and spigot water supply concrete pipe suspension protection system, main army containing large-diameter pipeline just beam
Encapsulating is reinforced at suspention system+bell and spigot.Structure specifically includes foundation pit supporting construction 1 and its top of both lateral sides in main body foundation pit
Longitudinal concrete crown beam 10 of portion's setting, just beam body is 8 for the army of building between two sides concrete crown beam 10, and just beam body is under 8 for army
Side's setting sunpender 9 suspends lateral major diameter bell and spigot water supply concrete pipe 3 in midair, and major diameter bell and spigot water supply concrete pipe 3 is provided with concrete
Support.
It is supported below 3 both lateral sides end of major diameter bell and spigot water supply concrete pipe by the bearing pile 2 on the outside of main body foundation pit.It is longitudinal
Concrete connecting-beam 11 is provided between adjacent 2 top of bearing pile.
Major diameter bell and spigot water supply concrete pipe 3, which is sequentially connected by multiple segments by Push-fit, to be formed, outside pipeline socket 4
Install pipeline leakage plugging device 6 additional, the concrete bearing in outside is total incapsulation concrete bearing 5.Pipeline is held on major diameter bell and spigot water supply concrete pipe 3
Socket 4 encapsulates concrete bearing 7 using the concrete bearing of outer portion as the half of lower half.Total incapsulation concrete bearing 5 and Ban Bao
7 lateral connection of sealing concrete support is integral.
The concrete connecting-beam 11 at 2 top of bearing pile is poured with concrete bearing to be integrated.
The construction method of above-mentioned major diameter bell and spigot water supply concrete pipe suspension protection system, is realized by following steps:
Step 1: the foundation pit supporting construction 1 of construction main body foundation pit；
Step 2: small foundation pit is excavated in advance on the outside of main body foundation pit, two carryings are respectively arranged in 3 two sides of major diameter bell and spigot water supply concrete pipe
Stake 2 is drilled pile, major diameter bell and spigot water supply concrete pipe 3 is fixed, when being excavated to major diameter bell and spigot water supply concrete 3 bottom of pipe
Interim I-shaped bridle iron is set in tube bottom pad；
Step 3: concrete connecting-beam 11 is arranged in two 2 pile crowns of bearing pile, supplies the major diameter bell and spigot within the scope of the small foundation pit in two sides
Water concrete pipe 3 carries out concrete pack, first installs pipeline leakage plugging device 6 at bell and spigot 4 additional, and total incapsulation concrete bearing 5, non-socket joint is arranged in outside
Half encapsulating concrete bearing 7 of setting at mouthful, concrete connecting-beam 11 and half encapsulating concrete bearing 7 and total incapsulation concrete bearing 5
It pours and is integrally connected, complete 3 both ends of major diameter bell and spigot water supply concrete pipe and fix；
Step 4: main body foundation pit is integrally excavated to the top of major diameter bell and spigot water supply concrete pipe 3, verifies 4 accurate location of bell and spigot；
Step 5: excavation section by section junction portion sets interim I-shaped bridle iron in tube bottom pad, performs at bell and spigot 4 pipeline leakage plugging device 6 and complete
Concrete bearing 5 is encapsulated, just beam 8 slings 3 connector of major diameter bell and spigot water supply concrete pipe for the army of performing, and props up between setting bar between sunpender 9
Support is reinforced, and army is just fixed in concrete crown beam 10 8 end of beam；
Step 6: excavation section by section remainder major diameter bell and spigot water supply concrete pipe 3 performs half encapsulating concrete bearing 7, the army of performing
Just beam 8 slings major diameter bell and spigot water supply concrete pipe 3, is arranged bracing reinforcement between bar between sunpender 9, army just 8 end of beam be fixed on it is mixed
In solidifying soil crown beam 10.
All sunpenders 9 are set as to can be adjusted up and down in height, and adjusting is facilitated to make 9 uniform stressed of every sunpender.
The present invention takes bearing pile to fix pipeline both ends, and just beam carries out suspension protection, uses Hough at bell socket for army
Section+total incapsulation concrete support is reinforced, and meets the stabilization security requirement of pipeline, while matching underground engineering construction process, construction letter
Just flexibly, improve work efficiency and space is had a wide range of applications for underground engineering.
The contents of the present invention are not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, all are covered by the claims of the invention.
Claims (8)
1. major diameter bell and spigot water supply concrete pipe suspension protection system, it is characterised in that:
Longitudinal concrete crown beam of foundation pit supporting construction (1) and its top setting including both lateral sides in main body foundation pit
(10), the army of building just beam body system (8) between two sides concrete crown beam (10), just setting sunpender (9) is suspended in midair below beam body system (8) for army
Lateral major diameter bell and spigot water supply concrete pipe (3), major diameter bell and spigot water supply concrete pipe (3) are provided with concrete bearing.
2. major diameter bell and spigot water supply concrete pipe suspension protection system according to claim 1, it is characterised in that:
It is supported below major diameter bell and spigot water supply concrete pipe (3) both lateral sides end by the bearing pile (2) on the outside of main body foundation pit.
3. major diameter bell and spigot water supply concrete pipe suspension protection system according to claim 2, it is characterised in that:
Concrete connecting-beam (11) are provided between at the top of longitudinally adjacent bearing pile (2).
4. major diameter bell and spigot water supply concrete pipe suspension protection system according to claim 3, it is characterised in that:
Major diameter bell and spigot water supply concrete pipe (3), which is sequentially connected by multiple segments by Push-fit, to be formed, and pipeline socket (4) is outside
It installs additional pipeline leakage plugging device (6), the concrete bearing in outside is total incapsulation concrete bearing (5).
5. major diameter bell and spigot water supply concrete pipe suspension protection system according to claim 4, it is characterised in that:
Pipeline socket (4) is using the concrete bearing of outer portion as half packet of lower half on major diameter bell and spigot water supply concrete pipe (3)
Sealing concrete support (7).
6. major diameter bell and spigot water supply concrete pipe suspension protection system according to claim 5, it is characterised in that:
Total incapsulation concrete bearing (5) and half encapsulating concrete bearing (7) lateral connection are integral.
7. major diameter bell and spigot water supply concrete pipe suspension protection system according to claim 6, it is characterised in that:
Concrete connecting-beam (11) at the top of bearing pile (2) is poured with concrete bearing to be integrated.
8. the construction method of major diameter bell and spigot water supply concrete pipe suspension protection system, it is characterised in that:
It is realized by following steps:
Step 1: the foundation pit supporting construction (1) of construction main body foundation pit；
Step 2: small foundation pit is excavated in advance on the outside of main body foundation pit, major diameter bell and spigot water supply concrete pipe (3) two sides are respectively arranged two and hold
It carries stake (2), is drilled pile, major diameter bell and spigot water supply concrete pipe (3) is fixed, major diameter bell and spigot water supply concrete pipe is excavated to
(3) interim I-shaped bridle iron is set in tube bottom pad when bottom；
Step 3: concrete connecting-beam (11) are arranged in two bearing pile (2) pile crowns, to the major diameter socket joint within the scope of the small foundation pit in two sides
Confession water concrete pipe (3) carries out concrete pack, first installs additional pipeline leakage plugging device (6) at bell and spigot (4), and total incapsulation concrete branch is arranged in outside
Seat (5), half encapsulating concrete bearing (7) of setting at non-bell and spigot, concrete connecting-beam (11) and half encapsulating concrete bearing (7) and
Total incapsulation concrete bearing (5), which pours, to be integrally connected, and is completed major diameter bell and spigot water supply concrete pipe (3) both ends and is fixed；
Step 4: main body foundation pit is integrally excavated to major diameter bell and spigot water supply concrete pipe (3) top, verifies bell and spigot (4) accurate location；
Step 5: excavation section by section junction portion sets interim I-shaped bridle iron in tube bottom pad, performs pipeline leakage plugging device (6) at bell and spigot (4)
And total incapsulation concrete bearing (5), just beam (8) slings major diameter bell and spigot water supply concrete pipe (3) connector for the army of performing, sunpender (9) it
Between be arranged bar between bracing reinforcement, just beam (8) end is fixed on concrete crown beam (10) for army；
Step 6: excavation section by section remainder major diameter bell and spigot water supply concrete pipe (3) performs half encapsulating concrete bearing (7), applies
Just beam (8) slings major diameter bell and spigot water supply concrete pipe (3) for the army of doing, and is arranged bracing reinforcement between bar between sunpender (9), army just beam (8)
End is fixed on concrete crown beam (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148162.4A CN109296825A (en) | 2018-09-29 | 2018-09-29 | Major diameter bell and spigot water supply concrete pipe suspension protection system and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148162.4A CN109296825A (en) | 2018-09-29 | 2018-09-29 | Major diameter bell and spigot water supply concrete pipe suspension protection system and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109296825A true CN109296825A (en) | 2019-02-01 |
Family
ID=65161144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811148162.4A Pending CN109296825A (en) | 2018-09-29 | 2018-09-29 | Major diameter bell and spigot water supply concrete pipe suspension protection system and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109296825A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723065A (en) * | 2019-02-26 | 2019-05-07 | 济南轨道交通集团有限公司 | Deep basal pit freezing partly reinforced construction method in bracing means and rich water sandy pear variety |
| CN109881679A (en) * | 2019-04-02 | 2019-06-14 | 中铁十二局集团有限公司 | A kind of overhung construction and construction method of deep-foundation pit engineering underground socket joint pipe of concrete |
| CN109972623A (en) * | 2019-03-22 | 2019-07-05 | 陕西铁路工程职业技术学院 | A kind of construction method and device carrying out pipeline suspension using Bailey beam |
| CN110965581A (en) * | 2019-12-12 | 2020-04-07 | 中铁十二局集团第二工程有限公司 | Protection construction method for underground pipeline in subway construction |
| CN111236040A (en) * | 2020-01-08 | 2020-06-05 | 中铁二院工程集团有限责任公司 | D-shaped temporary beam erecting method for underneath passing through railway frame bridge type tunnel |
| CN112359881A (en) * | 2020-10-26 | 2021-02-12 | 广州地铁设计研究院股份有限公司 | Supporting construction of pipeline of crossing foundation ditch |
| CN113073683A (en) * | 2021-04-07 | 2021-07-06 | 陕西华山路桥集团有限公司 | Temporary suspension device for existing pipeline and construction method |
| CN113216249A (en) * | 2021-04-22 | 2021-08-06 | 北京城建设计发展集团股份有限公司 | Method for constructing underground space under narrow road condition |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723065A (en) * | 2019-02-26 | 2019-05-07 | 济南轨道交通集团有限公司 | Deep basal pit freezing partly reinforced construction method in bracing means and rich water sandy pear variety |
| CN109723065B (en) * | 2019-02-26 | 2023-11-03 | 济南轨道交通集团有限公司 | Reinforcing device and deep foundation pit local freezing reinforcing construction method in water-rich gravel stratum |
| CN109972623A (en) * | 2019-03-22 | 2019-07-05 | 陕西铁路工程职业技术学院 | A kind of construction method and device carrying out pipeline suspension using Bailey beam |
| CN109881679A (en) * | 2019-04-02 | 2019-06-14 | 中铁十二局集团有限公司 | A kind of overhung construction and construction method of deep-foundation pit engineering underground socket joint pipe of concrete |
| CN110965581A (en) * | 2019-12-12 | 2020-04-07 | 中铁十二局集团第二工程有限公司 | Protection construction method for underground pipeline in subway construction |
| CN111236040A (en) * | 2020-01-08 | 2020-06-05 | 中铁二院工程集团有限责任公司 | D-shaped temporary beam erecting method for underneath passing through railway frame bridge type tunnel |
| CN112359881A (en) * | 2020-10-26 | 2021-02-12 | 广州地铁设计研究院股份有限公司 | Supporting construction of pipeline of crossing foundation ditch |
| CN113073683A (en) * | 2021-04-07 | 2021-07-06 | 陕西华山路桥集团有限公司 | Temporary suspension device for existing pipeline and construction method |
| CN113216249A (en) * | 2021-04-22 | 2021-08-06 | 北京城建设计发展集团股份有限公司 | Method for constructing underground space under narrow road condition |
| CN113216249B (en) * | 2021-04-22 | 2022-03-29 | 北京城建设计发展集团股份有限公司 | Method for constructing underground space under narrow road condition |
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