CN111485888B - Prefabricated piecemeal lining tunnel system in advance - Google Patents
Prefabricated piecemeal lining tunnel system in advance Download PDFInfo
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- CN111485888B CN111485888B CN201911364350.5A CN201911364350A CN111485888B CN 111485888 B CN111485888 B CN 111485888B CN 201911364350 A CN201911364350 A CN 201911364350A CN 111485888 B CN111485888 B CN 111485888B
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- jacking
- precast concrete
- top iron
- iron
- pressure water
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 134
- 229910052742 iron Inorganic materials 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 58
- 239000011178 precast concrete Substances 0.000 claims abstract description 47
- 239000002689 soil Substances 0.000 claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000007599 discharging Methods 0.000 claims description 20
- 238000005086 pumping Methods 0.000 claims description 19
- 238000009417 prefabrication Methods 0.000 claims description 2
- 230000005465 channeling Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 description 12
- 238000009412 basement excavation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 241000357293 Leptobrama muelleri Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a prefabricated block-by-block lining tunnel system and an implementation method, wherein the implementation method comprises the following steps: excavating and building a working well again, aligning the pushing assembly with the top iron, and starting a pushing process; opening the opening tenon and beginning the soil body digging process; closing the opening tenon and starting the jacking process; repeating the jacking process and the soil body cutting process of the top iron, and mounting the precast concrete plate at the rear end of the top iron; repeating the process of horizontally jacking the precast concrete plate, the process of digging a soil body by jacking iron and the process of installing the precast concrete plate; carrying out jacking construction on the side walls on the two sides of the precast concrete slab; and excavating a tunnel on the full section and pouring a main structure. The method can construct the tunnel lining part firstly and then excavate the tunnel, thereby reducing the construction risk and having flexible tunnel section form; the method has the advantages of small influence on the ground, flexible tunnel section form, simple process, controllable engineering quality and strong implementability.
Description
Technical Field
The invention relates to the technical field of construction engineering construction, in particular to an advanced prefabrication block lining tunnel system and an implementation method.
Background
With the rapid development of infrastructure construction in China, tunnel projects are being vigorously built in many soft soil areas, and because soft soil has poor project properties, the construction of tunnels in soft soil strata has higher construction difficulty and project risks.
The traditional construction methods include shallow-buried underground excavation, open excavation, shield method and pipe-jacking method. The shallow-buried underground excavation method has higher risk, and the risk and the manufacturing cost are correspondingly increased along with the increase of the span of the tunnel; the open cut method has great influence on ground traffic, causes more pipeline relocation work and influences the normal life and trip of surrounding residents; the shield method and the pipe jacking method are limited by the size of the machine, the selection of the size of the tunnel has no flexibility, the tunnel with an unconventional shape cannot be implemented, and the shield method and the pipe jacking method have higher requirements on the soil covering depth.
Disclosure of Invention
The invention aims to provide a prefabricated block-lined tunnel system which is flexible in tunnel section form and can be used for constructing a tunnel lining part firstly and excavating a tunnel later and an implementation method.
In order to achieve the purpose, the concrete technical scheme of the prefabricated block lining tunnel system and the implementation method comprises the following steps:
a prefabricated block lined tunnel system comprising: a lining assembly comprising a roof iron and at least one precast concrete panel; the cutting conveying assembly comprises a high-pressure water pump, a high-pressure water pipe and a pumping pipe which are arranged in the top iron and are used for cutting; and the jacking assembly comprises a jack and a reaction frame and is used for jacking the top iron and the precast concrete slab into a soil body.
Furthermore, communicated hole drawing grooves are formed in the top iron and the precast concrete plate in the lining assembly.
Further, the undercutting conveying assembly comprises: one end of the high-pressure water pipe is communicated with the high-pressure water pump and drainage pump and is positioned in the hole digging groove; one end of the pumping and discharging pipe is communicated with the high-pressure water pumping and discharging pump and is positioned in the hole digging groove; and the opening tenon is arranged at the front end of the top iron and controls the opening and the closing of the port of the top iron by opening and closing the opening tenon so as to change the jacking state or the slotting state of the top iron.
Further, the other end of the high-pressure water pipe is connected with a high-pressure spray head, and the high-pressure spray head is positioned at the front end of the top iron; the other end of the pumping and discharging pipe is connected with a pumping and discharging head which is positioned at the front end of the top iron.
Further, the undercutting conveying assembly further comprises a water tank and a slag settling tank.
Further, the top iron is linear or arched; the precast concrete plate is in a linear shape or an arched shape.
An implementation method of a prefabricated segmented lining tunnel comprises the following steps:
excavating and building a working well again, aligning the pushing assembly with the top iron, and starting a pushing process;
opening the opening tenon and beginning the soil body digging process;
closing the opening tenon and starting the jacking process;
repeating the jacking process and the soil body cutting process of the top iron, and mounting the precast concrete plate at the rear end of the top iron;
repeating the process of horizontally jacking the precast concrete plate, the process of digging a soil body by jacking iron and the process of installing the precast concrete plate;
carrying out jacking construction on the side walls on the two sides of the precast concrete slab;
and excavating a tunnel on the full section and pouring a main structure.
Further, in the step of the jacking process: and horizontally jacking the top iron into the soil body by a jack in the jacking assembly.
Further, in the step of the soil body cutting process, the soil body is cut through a high-pressure water pipe, a high-pressure spray head, a pumping and discharging pipe and a pumping and discharging head which are connected with a high-pressure water pumping and discharging pump.
The prefabricated block-by-block lining tunnel system and the implementation method have the advantages that:
1) the tunnel lining part can be constructed firstly, and then the tunnel is excavated, so that the construction risk is reduced, and the form of the section of the tunnel is flexible;
2) the method has the advantages of small influence on the ground, flexible tunnel section form, simple process, controllable engineering quality and strong implementability.
Drawings
FIG. 1 is a schematic structural view of a prefabricated block lined tunnel system of the present invention;
FIG. 2A is a first schematic structural view of a top iron of the present invention;
FIG. 2B is a schematic structural view of a top iron according to the present invention;
FIG. 2C is a third schematic structural view of the top iron of the present invention;
FIG. 3A is a schematic structural view of the top iron of the present invention in a closed state and an open state;
FIG. 3B is a top view of the top iron of the present invention;
fig. 4A is a first schematic structural view of a precast concrete panel of the present invention;
fig. 4B is a second structural schematic view of a precast concrete panel of the present invention;
FIG. 5 is a schematic structural view of the plunge cut conveyor assembly of the present invention;
FIG. 6 is a schematic view of the pushing assembly of the present invention.
In the figure: 1. carrying out iron jacking; 10. a high-pressure water pump; 11. a water tank; 12. a slag settling tank; 13. steel reclining; 14. a reaction frame; 15. a jack; 2. digging a hole and a groove; 3. a high pressure water pipe; 4. a tube drawing and discharging tube; 5. a high pressure spray head; 6. drawing a row head; 7. opening the tenon; 8. prefabricating a concrete slab; 81. a first precast concrete panel; 82. a second precast concrete panel; a third precast concrete panel; 84. a fourth precast concrete panel; 85. a fifth precast concrete panel; 91. a top plate; 92. a first side wall; 93. and a second side wall.
Detailed Description
For a better understanding of the objects, structure and function of the present invention, a prefabricated block lined tunnel system and method of operation of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, the prefabricated segmented lining tunnel system and the implementation method thereof are disclosed, the prefabricated segmented lining tunnel system comprises a lining component, a cut conveying component and a pushing component, wherein cutting is performed through the cut conveying component, the pushing component is used for pushing a top iron 1 and a precast concrete slab 8 into a soil body along a road direction, full-section excavation and main structure pouring are performed after lining jacking is completed, and the prefabricated segmented lining tunnel system is suitable for tunnel construction in soft soil strata such as silt and sand.
Further, the lining assembly comprises a roof iron 1 and at least one precast concrete panel 8. Communicated cut holes 2 are arranged in the top iron 1 and the precast concrete plate 8. The roof iron 1 is in the form of a straight line or an arch, only one of which is shown in the drawings, and the precast concrete panel 8 is in the form of a straight line or an arch, only one of which is shown in the drawings. The precast concrete plate 8 is a reinforced concrete plate.
Further, the cutting conveying assembly comprises a high-pressure water pump drainage pump 10, a high-pressure water pipe 3 and a pump drainage pipe 4, the high-pressure water pipe 3 and the pump drainage pipe 4 are located in the hole cutting 2 of the top iron 1 and the precast concrete slab 8, one end of the high-pressure water pipe 3 and one end of the pump drainage pipe 4 are both communicated with the high-pressure water pump drainage pump 10 located at the rear end of the top iron 1, the other end of the high-pressure water pipe is respectively connected with a high-pressure spray head 5 (a steerable and adjustable high-pressure spray head) and a pump drainage head 6 (a steerable pump drainage head), and the high-pressure spray head 5 and the pump drainage head 6 are located at the front end.
In addition, the plunge cut conveying assembly further comprises an opening tenon 7, the opening tenon 7 is arranged at the front end of the top iron 1 (namely one end used for plunge cutting), the opening and closing of the port of the top iron 1 are controlled by opening and closing the opening tenon 7, and the high-pressure spray head 5 and the pumping and discharging head 6 are collected or extend out of the top iron 1 through the withdrawing or lower high-pressure water pipe 3 and the pumping and discharging pipe 4, so that two working states of jacking and plunge cutting are realized.
Further, the undercutting conveying assembly also comprises a water tank 11 and a slag settling tank 12. As shown in fig. 5, the high pressure water pump 10 is connected with the high pressure nozzle 5 through the high pressure water pipe 3 for providing high pressure water to soften and cut soil, and the high pressure nozzle 5 is provided with a visual probe, and the water pressure of the water spray is controllable. The high-pressure water pump 10 is connected with the pump head 6 through the pump discharge pipe 4 and is used for sucking out the soil-water multiphase mixture and discharging the soil-water multiphase mixture into the sediment tank 12.
Further, the pushing assembly comprises a steel backrest 13, a reaction frame 14 and a jack 15. The steel back 13 is placed on the end wall of the working well, and the jack 15 horizontally pushes the top iron 1 into the soil body by contacting with the top iron 1.
The invention also discloses an implementation method of the prefabricated block-by-block lining tunnel, which comprises the following steps:
the method comprises the following steps that 1, a working well is excavated and built back in a planned building site, a pushing assembly is installed, the pushing assembly comprises a steel back 13, a reaction frame 14 and a jack 15, and an advanced small guide pipe or a pipe shed is adopted to pre-reinforce a soil body to be constructed (particularly aiming at a hole above a top plate 91 above a precast concrete plate 8) in advance so as to prevent the soil body from collapsing; positioning the top iron 1, centering the pushing assembly with the top iron 1, and starting the pushing process.
Specifically, in the above-mentioned step of the jacking process, the jacking iron 1 is horizontally jacked to the soil mass by the jack 15 in the jacking assembly, as indicated by the arrow in the figure, by 0.5-1.0 m, and the jacking depth can be adjusted according to the equipment and the geological conditions.
And step 2, opening an opening tenon 7 at the front end of the top iron 1 to start the soil body cutting process.
Specifically, in the step of the soil body cutting process, the high-pressure water pipe 3, the high-pressure spray nozzle 5, the pumping and discharging pipe 4 and the pumping and discharging head 6 are installed and opened in the cutting hole 2 in the top iron 1, the high-pressure water pipe 3 and the high-pressure spray nozzle 5 soften and cut the soft soil body at high pressure to form a water-soil multiphase mixture, the water-soil multiphase mixture is sucked out and discharged into the slag settling tank 13 through the pumping and discharging pipe 4 and the pumping and discharging head 6, the front cutting condition is observed through the visual probe on the high-pressure spray nozzle 5, and the cutting and mud suction positions are adjusted according to the cutting condition.
And 3, after the front end of the top iron 1 is evenly cut for a certain distance (0.5-1.0 m) along the line direction, the cutting depth can be adjusted according to equipment and geological conditions, the high-pressure water pipe 3 and the pumping and discharging pipe 4 are pumped back, the opening tenon 7 is closed, the jacking process is started, the top iron (0.5-1.0 m) is jacked again through the jacking assembly, and the jacking depth can be adjusted according to the equipment and the geological conditions.
And 4, repeating the steps 2 and 3, namely repeating the jacking process of the top iron and the soil body cutting process, mounting the precast concrete plate 8 at the rear end of the top iron 1 after the top iron 1 jacks most of the soil body, and then jacking the jacking assembly to jack the top iron 1 by jacking the precast concrete plate 8.
And 5, repeating the steps 2-4, namely repeating the process of horizontally jacking the precast concrete plates, the process of digging soil body by jacking iron and the process of installing the precast concrete plates, installing a second precast concrete plate 82, a third precast concrete plate 83, a fourth precast concrete plate 84, a fifth precast concrete plate 85 and the like at the rear end of the first precast concrete plate 81, and jacking the top plate 91 of the precast concrete plate 8.
And 6, carrying out jacking construction on the side walls on two sides of the precast concrete plate 8.
Specifically, the first side wall 92 of the precast concrete slab 8 is jacked, and the second side wall 93 of the precast concrete slab 8 is jacked in the same manner.
And 7, excavating a tunnel on the full section and pouring a main body structure.
According to the prefabricated block-by-block lining tunnel system and the implementation method, the lining part of the tunnel can be constructed firstly, and then the tunnel is excavated, so that the construction risk is reduced, and the section form of the tunnel is flexible; the method has the advantages of small influence on the ground, flexible tunnel section form, simple process, controllable engineering quality and strong implementability.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (7)
1. An advanced precast block lined tunnel system comprising:
the lining assembly comprises a top iron (1) and at least one precast concrete plate (8), wherein communicated drawing holes (2) are formed in the top iron (1) and the precast concrete plate (8) in the lining assembly;
the cutting conveying assembly comprises a high-pressure water pumping and discharging pump (10), a high-pressure water pipe (3) and a pumping and discharging pipe (4) which are arranged in the top iron (1) and are used for cutting; one end of the high-pressure water pipe (3) is communicated with the high-pressure water pump and drainage pump (10) and is positioned in the hole digging groove (2); one end of the pumping and discharging pipe (4) is communicated with the high-pressure water pumping and discharging pump (10) and is positioned in the hole digging groove (2); the opening tenon (7) is arranged at the front end of the top iron (1), and the opening and closing of the port of the top iron (1) are controlled by opening and closing the opening tenon (7) so as to change the jacking state or the channeling state of the top iron (1);
the jacking assembly comprises a jack (15) and a reaction frame (14) and is used for jacking the jacking iron (1) and the precast concrete plate (8) into the soil body.
2. The advanced prefabrication block lining tunnel system according to claim 1, wherein the other end of the high pressure water pipe (3) is connected with a high pressure nozzle (5) which is positioned at the front end of the top iron (1); the other end of the exhaust pipe (4) is connected with an exhaust head (6), and the exhaust head (6) is positioned at the front end of the top iron (1).
3. A prefabricated advance block-lined tunnel system according to claim 1, characterised in that the undermining conveyor assembly further comprises a water tank (11) and a detritus basin (12).
4. The prefabricated segment lined tunnel system of claim 1, wherein the head iron (1) is in the shape of a straight line or an arch; the precast concrete plates (8) are linear or arched.
5. The prefabricated advance block-lining tunnel system according to claim 1, which is implemented by adopting the following specific steps:
excavating and building a working well again, aligning the pushing assembly with the top iron, and starting a pushing process;
opening the opening tenon and beginning the soil body digging process;
closing the opening tenon and starting the jacking process;
repeating the jacking process and the soil body cutting process of the top iron, and mounting the precast concrete plate at the rear end of the top iron;
repeating the process of horizontally jacking the precast concrete plate, the process of digging a soil body by jacking iron and the process of installing the precast concrete plate;
carrying out jacking construction on the side walls on the two sides of the precast concrete slab;
and excavating a tunnel on the full section and pouring a main structure.
6. The prefabricated block-lined tunnel system of claim 5, wherein in the step of the jacking process: and horizontally jacking the top iron into the soil body by a jack in the jacking assembly.
7. The prefabricated block lined tunnel system of claim 5, wherein in the step of the soil slitting process, the soil is slit by a high pressure water pipe connected to a high pressure water pump, a high pressure nozzle and a suction pipe, and a suction head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364350.5A CN111485888B (en) | 2019-12-26 | 2019-12-26 | Prefabricated piecemeal lining tunnel system in advance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364350.5A CN111485888B (en) | 2019-12-26 | 2019-12-26 | Prefabricated piecemeal lining tunnel system in advance |
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| Publication Number | Publication Date |
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| CN111485888A CN111485888A (en) | 2020-08-04 |
| CN111485888B true CN111485888B (en) | 2021-05-28 |
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| CN113356869B (en) * | 2021-06-23 | 2022-08-23 | 中亿丰建设集团股份有限公司 | Assembly type limited rotation tunneling device for tunnel connection channel and construction method |
| CN113323671A (en) * | 2021-06-29 | 2021-08-31 | 中国化学工程第十六建设有限公司 | Slag removal anti-lock system and slag removal method for rock pipe jacking machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0953387A (en) * | 1995-08-10 | 1997-02-25 | Houshiyou:Kk | Water supply pipe structure in small caliber pipe propulsion unit |
| CN103410521A (en) * | 2013-08-26 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Water sprayer for tube push bench |
| CN104695971B (en) * | 2015-01-07 | 2017-01-25 | 同济大学 | Annular pipe-jacking construction method |
| CN106677793A (en) * | 2015-11-11 | 2017-05-17 | 中铁十八局集团第四工程有限公司 | Heading machine head for jacking soil cutting and deviation adjusting of culvert pipe with large diameter |
| CN207660611U (en) * | 2017-11-08 | 2018-07-27 | 煤科集团沈阳研究院有限公司 | A kind of coal mine push-bench deslagging agitating device |
| CN209163819U (en) * | 2018-10-24 | 2019-07-26 | 中铁十四局集团有限公司 | A kind of working top iron of soil pressing balance pipe jacking machine |
| CN109268042B (en) * | 2018-10-29 | 2024-05-28 | 中铁十六局集团地铁工程有限公司 | Small pilot tunnel advanced support equipment and construction method |
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