CN110273696B - Tunnel or underground space corridor type construction method - Google Patents
Tunnel or underground space corridor type construction method Download PDFInfo
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- CN110273696B CN110273696B CN201910500495.7A CN201910500495A CN110273696B CN 110273696 B CN110273696 B CN 110273696B CN 201910500495 A CN201910500495 A CN 201910500495A CN 110273696 B CN110273696 B CN 110273696B
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- 238000010276 construction Methods 0.000 title claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 97
- 239000010959 steel Substances 0.000 claims abstract description 97
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 239000002689 soil Substances 0.000 claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 8
- 230000011218 segmentation Effects 0.000 claims abstract description 3
- 238000005553 drilling Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000005034 decoration Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/14—Lining predominantly with metal
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to the technical field of tunnel or underground space construction, in particular to a tunnel type construction method for a tunnel or an underground space. Setting a steel pipe by taking the inner edge of the contour line of the tunnel or the underground space as a datum line; digging out soil in the steel pipe; installing a temporary supporting facility in the steel pipe; cutting off the steel plates on the adjacent sides of the steel pipe in a longitudinal segmentation manner, wherein the cutting-off length is 1-20m when a part of a full section or a section is cut off each time, so as to form a hollow gallery; installing permanent supporting facilities in the steel pipes, dismantling the temporary supporting facilities, binding reinforcing steel bars in the gallery, and pouring concrete to form a main body structure of the tunnel or the underground space; and finally, removing soil in the contour line of the tunnel or the underground space to form the tunnel or the underground space with a stable structure. The method can be used for ultra-shallow-buried, large-section and interference-free downward-penetrating construction, and has the characteristics of stable main structure, high safety, controllable settlement, high construction efficiency and low cost.
Description
Technical Field
The invention relates to the technical field of tunnel or underground space construction, in particular to a safe and efficient construction method capable of realizing ultra-shallow buried large-section construction, and specifically relates to a tunnel type construction method for a tunnel or underground space.
Background
The traditional construction method of the tunnel or the underground space is mainly divided into an open excavation method and a subsurface excavation method, wherein the open excavation method comprises the steps of completely excavating a covering object, then installing a template, binding reinforcing steel bars, pouring concrete to form a structure main body structure, and finally backfilling the periphery of the structure. The open cut method has the advantages of simple and quick technology, better stress condition of a main structure and the like, and has the defects of the need of excavating the whole space, backfilling after construction, large workload, more useless work and lower efficiency, and the construction in urban areas is easy to cause interference to existing roads and other public facilities, generate larger noise to disturb residents, and influence the traveling and normal life of residents.
The underground excavation construction method mainly comprises a mining method and a shield method, wherein the mining method is to divide a space with a larger section into a plurality of parts, then excavate and support in a small space, and then construct a reinforced concrete permanent structure. The shield method is a method for preventing collapse into a tunnel by using a shield shell and surrounding rocks around a duct piece support, simultaneously cutting and excavating a section by using a mechanical cutter head, and then assembling precast concrete duct pieces to form a tunnel structure. The shield method has the advantages of not occupying ground space and having small interference to production and living of residents, and has the defect that the construction section is limited by the shield machine and is not suitable for construction of structures such as ultra-shallow buried and large-section underpass railways, stations, buildings and the like.
Along with the continuous improvement of the development level of cities, the urban area is continuously enlarged, urban roads are continuously widened, meanwhile, due to the influence of existing railway stations, railway lines and other buildings, a plurality of main roads become broken roads, road intersection junctions are blocked into parking lots, a plurality of pipelines and galleries cannot pass through, and the cities are separated and broken by the railway lines and other important structures.
As known to those skilled in the art, the crossing of railway stations, railway lines and buildings with ultra-shallow burying, large cross section, less interference and low cost is not possible at present, and individual cities are crossed in a mode of prolonging lines to reduce the excavation elevation or reducing the cross section. However, more cities cannot bear high construction cost, poor traveling experience is brought to residents due to large gradient caused by deep crossing, and serious interference can be caused to existing lines. Therefore, the technology which relates to urban development and civilian life cannot make breakthrough all the time.
Disclosure of Invention
The invention provides a corridor type construction method with ultra-shallow burying, large section, less interference and low cost. According to the method, through powerful support, a main body structure is constructed preferentially in a corridor type subsection mode, and then soil in a channel is removed. The method can be used for ultra-shallow-buried, large-section and interference-free downward-penetrating construction, and has the characteristics of stable main structure, high safety, controllable settlement, high construction efficiency and low cost.
The technical scheme of the invention is as follows:
a tunnel or underground space corridor type construction method, use tunnel or inner edge of outline line of underground space as the datum line to set up the steel tube; digging out soil in the steel pipe; installing a temporary supporting facility in the steel pipe; cutting off the steel plates on the adjacent sides of the steel pipe in a longitudinal segmentation manner, wherein the cutting-off length is 1-20m when a part of a full section or a section is cut off each time, so as to form a hollow gallery; installing permanent supporting facilities in the steel pipes, dismantling the temporary supporting facilities, binding reinforcing steel bars in the gallery, and pouring concrete to form a main body structure of the tunnel or the underground space; and finally, removing soil in the contour line of the tunnel or the underground space to form the tunnel or the underground space with a stable structure.
Further, the tunnel type construction method for the tunnel or the underground space comprises the following detailed operation steps:
(1) constructing working wells at two ends of a tunnel or an underground space, and installing movable construction platforms in the working wells according to construction requirements;
(2) marking out a tunnel or an underground space contour line at the side of the working well tunnel or the underground space, and using the tunnel or the underground space contour line as a standard for driving a steel pipe;
(3) the method comprises the following steps of (1) drilling a steel pipe by taking the inner edge of the contour line of a tunnel or an underground space as a datum line, drilling the steel pipe along the contour line of the tunnel or the underground space by adopting a manual work, a shield machine or a tunneling machine, taking out soil in the steel pipe after drilling is finished, wherein the steel pipe is a hollow channel, a lock catch or a twisting linkage device is arranged between adjacent steel pipes, and the drilled steel pipe has multiple functions of bearing, water blocking and template;
(4) installing a temporary supporting facility in the steel pipe, wherein the temporary supporting facility is a structure consisting of steel plates at the bottom and the top and a hydraulic pressure or a jack at the middle part, so that the temporary supporting facility is convenient to move and can be supported in time;
(5) in the longitudinal direction of the tunnel or the underground space, steel plates on the adjacent sides of the steel pipe are longitudinally cut off in sections, the distance between the upper tangent line and the lower tangent line is 0.3-2m, the cutting distance is 3-12 m, a transverse corridor is formed, and the cutting mode is cutting by using plasma, gas welding, a grinding wheel cutting piece or a high-pressure water gun; cutting off the steel plates on the adjacent sides of the steel pipes, namely cutting off the steel plates in the steel pipes which are supported to form a corridor type cavity;
(6) installing a permanent supporting facility in the corridor-type cavity, wherein the diameter of the supporting facility is phi 30 mm-phi 1000mm, and the supporting facility is made of one or more of steel pipes, wood, concrete or alloy; the upper part of the supporting facility is connected with the steel pipe top plate, and the lower part of the supporting facility is connected with the bottom of the steel pipe to form a permanent supporting structure;
(7) binding reinforcing steel bars in the corridor type cavity according to the main structure requirements of the tunnel or the underground space, and pouring concrete in the corridor with the bound reinforcing steel bars in a segmented manner until the corridor is closed into a ring to form the main structure of the tunnel or the underground space; binding and pouring are carried out according to the stress requirement of the main body structure, and the performance, the size and the binding distance of the steel bar meet the design requirement of the main body structure;
(8) after the tunnel type main body structure construction of the tunnel or the underground space is completed, soil in the main body structure is removed, and then auxiliary facilities and decoration are constructed according to the channel function to form the tunnel or the underground space.
Further, in the step (1), the working well is of a cuboid or cube structure.
Further, in the step (3), the cross section of the steel pipe is rectangular, circular, triangular, parallelogram, arc or oval, so as to ensure good construction effect.
Further, in the step (3), when the steel pipe is a rectangular steel pipe, the side length is 0.3m-2 m.
Further, in the step (3), a primary-secondary port connecting device is installed at the top or the bottom of the rectangular steel pipe.
Further, in step (6), the material of the permanent support means is steel, concrete or a combination thereof.
Further, in the step (7), the thickness of the main structure is 0.3-2 m.
The beneficial effect of the invention is that,
and (3) connecting adjacent rectangular steel pipes by using a primary-secondary port connecting device. The advantage is that the connection is quick, and the steel pipe is beaten and is established the direction accuracy and have better water-blocking, waterproof effect.
The temporary supporting facility in the step (4) has the advantages that necessary supporting can be carried out in time according to an external stress structure, so that the deformation of the steel pipe is prevented, and the safety of construction operators is ensured.
And (5) cutting the steel plates between the adjacent steel pipes in a segmenting mode to form a corridor, and has the advantages that the main structure is segmented, construction is carried out in a small space, temporary supporting measures can be repeatedly used, and construction is safe and controllable.
And (6) installing permanent supporting facilities in the corridor, and having the advantage of ensuring the safety in the construction process. Meanwhile, after the reinforced concrete structure is constructed, the supporting device and the main structure are integrated, and the stability of the main structure is enhanced.
The construction method of the invention adopts the corridor type sectional construction, has small construction section, and particularly cuts or supports in the steel pipe, and has the characteristics of uniform stress, stable and convenient support and strong support force.
The construction of the main body structure of the tunnel or underground space structure is completed by using a corridor type method, the stress structure of the core soil is not changed during construction, and the stability of the integral stress is ensured. The method is widely applicable to construction of ultra-shallow buried tunnels or underground spaces with large sections and complex geology, and is the most revolutionary result of the construction method of the tunnels or the underground spaces for 60 years.
In a word, the corridor method main body structure provided by the invention has the advantages of controllable safety and quality, simple construction process and low construction cost, can be used for construction of ultra-shallow-buried large-section tunnels or underground spaces, and has good applicability.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a sectional view of the corridor type construction method of the present invention.
Fig. 3 is a structural elevation view of the corridor type construction method of the present invention.
FIG. 4 is a construction front view of a temporary support facility in a corridor during the construction process of the corridor type construction method of the invention.
Fig. 5 is a construction elevation view of permanent support facilities in a corridor during the construction process of the corridor type construction method of the present invention.
Fig. 6 is a front view of the main structure steel bars bound in the corridor by the corridor type construction method.
Fig. 7 is a front view of a soil body forming underground space in an excavated structure constructed by the corridor type construction method according to the present invention.
Fig. 8 is a perspective view of a main structure constructed by the corridor-type construction method of the present invention.
1-temporary support facility, 2-permanent support facility and 3-main structure.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1 construction case of Taiyuan railway station under Yingze street in Taiyuan city
The invention carries out construction by penetrating the taiyuan railway station under the welcome avenue of taiyuan city, and forms a better embodiment.
(1) The construction working well is built in east square and west square of Taiyuan railway station respectively, the size of the working well is 20m by 20m, and a movable working platform is installed in the working well.
(2) Marking the contour line of the channel before construction, fixing the angle and the contour of the steel pipe, wherein the inner side dimension of the contour line of the channel is 20 × 5 m.
(3) The steel pipe is drilled in a small shield machine top mode, a round steel pipe with the diameter of 2 meters is drilled, and a circle of steel pipe is formed around the contour line. The wall thickness of the circular steel pipe is 2CM, and the adjacent steel pipes are closely tangent.
(4) The temporary support facility is installed by using the construction pipe support device described in the patent application No. 201811399170.6 (published by 2019.2.22), and is laid in a circular steel pipe to perform a temporary support function.
(5) And cutting off the steel plates of the adjacent steel pipes, and cutting off the steel plates between the adjacent steel pipes by using the technologies of gas welding, electric welding, plasma cutting machine and the like to form the transverse return type gallery. And after the pipe wall of the adjacent steel pipe is cut off, the pipe arcs of the adjacent steel pipe are connected by using a steel plate to form a circular gallery type cavity with the inner height not less than 1.2 m.
(6) The steel pipes with the diameter of 20cm are arranged in the steel pipes, the distance between the steel pipes is 1 m, the steel pipes are welded between the upper steel pipe arc and the lower steel pipe arc, the support of the upper steel pipe is enhanced, and the steel pipes become one of permanent support facility structures of the channel.
(7) And (2) binding steel bars and pouring concrete in the gallery type cavity, binding steel bars with a main bar phi 22, auxiliary bars phi 16 and stirrups phi 8 in the gallery type cavity in sections, and pouring C45 concrete to form a complete main structure.
(8) After the main structure is constructed by using the corridor type construction method, core soil in the main structure is removed, then a cushion layer is arranged according to municipal road requirements, auxiliary structures such as a ditch and the like are built, a channel is decorated, electromechanical equipment and traffic facilities are installed, and an underground space is formed.
Claims (7)
1. A tunnel or underground space corridor type construction method, use tunnel or inner edge of outline line of underground space as the datum line to set up the steel tube; digging out soil in the steel pipe; installing a temporary supporting facility in the steel pipe; cutting off the steel plates on the adjacent sides of the steel pipe in a longitudinal segmentation manner, wherein the cutting-off length is 1-20m when a part of a full section or a section is cut off each time, so as to form a hollow gallery; installing permanent supporting facilities in the steel pipes, dismantling the temporary supporting facilities, binding reinforcing steel bars in the gallery, and pouring concrete to form a main body structure of the tunnel or the underground space; finally, removing soil in the contour line of the tunnel or the underground space to form the tunnel or the underground space with a stable structure;
the detailed operation steps are as follows:
(1) constructing working wells at two ends of a tunnel or an underground space, and installing movable construction platforms in the working wells according to construction requirements;
(2) marking out a tunnel or an underground space contour line at the side of the working well tunnel or the underground space, and using the tunnel or the underground space contour line as a standard for driving a steel pipe;
(3) the method comprises the following steps of (1) drilling a steel pipe by taking the inner edge of the contour line of a tunnel or an underground space as a datum line, drilling the steel pipe along the contour line of the tunnel or the underground space by adopting a manual work, a shield machine or a tunneling machine, taking out soil in the steel pipe after drilling is finished, wherein the steel pipe is a hollow channel, a lock catch or a twisting linkage device is arranged between adjacent steel pipes, and the drilled steel pipe has multiple functions of bearing, water blocking and template;
(4) installing a temporary supporting facility in the steel pipe, wherein the temporary supporting facility is a structure consisting of steel plates at the bottom and the top and a hydraulic pressure or a jack at the middle part, so that the temporary supporting facility is convenient to move and can be supported in time;
(5) in the longitudinal direction of the tunnel or the underground space, steel plates on the adjacent sides of the steel pipe are longitudinally cut off in sections, the distance between the upper tangent line and the lower tangent line is 0.3-2m, the cutting distance is 3-12 m, a transverse corridor is formed, and the cutting mode is cutting by using plasma, gas welding, a grinding wheel cutting piece or a high-pressure water gun; cutting off the steel plates on the adjacent sides of the steel pipes, namely cutting off the steel plates in the steel pipes which are supported to form a corridor type cavity;
(6) installing a permanent supporting facility in the corridor-type cavity, wherein the diameter of the supporting facility is phi 30 mm-phi 1000mm, and the supporting facility is made of one or more of steel pipes, wood, concrete or alloy; the upper part of the supporting facility is connected with the steel pipe top plate, and the lower part of the supporting facility is connected with the bottom of the steel pipe to form a permanent supporting structure;
(7) binding reinforcing steel bars in the corridor type cavity according to the main structure requirements of the tunnel or the underground space, and pouring concrete in the corridor with the bound reinforcing steel bars in a segmented manner until the corridor is closed into a ring to form the main structure of the tunnel or the underground space; binding and pouring are carried out according to the stress requirement of the main body structure, and the performance, the size and the binding distance of the steel bar meet the design requirement of the main body structure;
(8) after the tunnel type main body structure construction of the tunnel or the underground space is completed, soil in the main body structure is removed, and then auxiliary facilities and decoration are constructed according to the channel function to form the tunnel or the underground space.
2. The tunnel or underground space corridor type construction method according to claim 1, wherein in step (1), the working well is of a cuboid or cube structure.
3. The tunnel or underground space corridor type construction method according to claim 1, wherein in the step (3), the cross section of the steel pipe is rectangular, circular, triangular, parallelogram, arc, or oval.
4. The corridor-type construction method of a tunnel or underground space according to claim 1, wherein in step (3), when the steel pipe is a rectangular steel pipe, the side length is 0.3m-2 m.
5. The tunnel or underground space corridor type construction method according to claim 4, wherein in step (3), the top or bottom of the rectangular steel pipe is provided with a primary-secondary port connecting device.
6. The tunnel or underground space corridor type construction method according to claim 1, wherein in step (6), the material of the permanent support means is steel, concrete or a combination thereof.
7. The corridor-type construction method for roads or underground spaces according to claim 1, wherein in step (7), the thickness of the main structure is 0.3-2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910500495.7A CN110273696B (en) | 2019-06-11 | 2019-06-11 | Tunnel or underground space corridor type construction method |
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| CN201910500495.7A CN110273696B (en) | 2019-06-11 | 2019-06-11 | Tunnel or underground space corridor type construction method |
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| CN110273696A CN110273696A (en) | 2019-09-24 |
| CN110273696B true CN110273696B (en) | 2021-04-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20070076553A (en) * | 2007-02-26 | 2007-07-24 | 신일씨엔아이(주) | Construction method of underground structure using concrete filled pipe roof and concrete wall |
| CN202064649U (en) * | 2011-05-14 | 2011-12-07 | 中国葛洲坝集团股份有限公司 | Telescopic top-form steel pipe support |
| CN103485790A (en) * | 2013-10-11 | 2014-01-01 | 中交第二公路勘察设计研究院有限公司 | Shallow tunneling method for pipe-proof-supporting structure combined system |
| CN205225281U (en) * | 2015-12-14 | 2016-05-11 | 中建六局土木工程有限公司 | For a short time, it secretly digs section support construction structures than super shallow rectangle that buries to cover to stride |
| CN105464675B (en) * | 2016-02-01 | 2017-09-29 | 北京首尔工程技术有限公司 | A kind of construction method of face contacting pipe curtain structure |
| CN206144569U (en) * | 2016-10-25 | 2017-05-03 | 中铁第四勘察设计院集团有限公司 | Confined is advance in advance and is protected tunnel structure |
| CN108278116B (en) * | 2018-01-22 | 2020-04-07 | 东北大学 | Shallow-buried large-span pipe curtain supporting system and construction method thereof |
| CN108930544A (en) * | 2018-07-27 | 2018-12-04 | 中铁十四局集团有限公司 | A kind of broken ground underground large space method of construction |
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