CN108457660B - Device for preventing back soil in rectangular pipe jacking construction and construction method thereof - Google Patents
Device for preventing back soil in rectangular pipe jacking construction and construction method thereof Download PDFInfo
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- CN108457660B CN108457660B CN201810343168.0A CN201810343168A CN108457660B CN 108457660 B CN108457660 B CN 108457660B CN 201810343168 A CN201810343168 A CN 201810343168A CN 108457660 B CN108457660 B CN 108457660B
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- pipe jacking
- rectangular pipe
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- jacking
- rectangular
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/03—Driving non-circular tunnels
Abstract
The invention belongs to the technical field of underground engineering construction, in particular to a device for preventing soil backing in rectangular pipe jacking construction and a construction method thereof, which effectively prevent soil backing phenomenon that a pipe jacking pipe joint and a pipe jacking machine head drive soil above the pipe jacking pipe joint and the pipe jacking machine head to move forwards due to excessive friction force, wherein the device comprises a plurality of extending devices arranged at the front end or the shield tail of a rectangular pipe jacking machine, the extending devices comprise flexible isolation strips, and reserved slots are arranged at the top positions of the rectangular pipe jacking machine above the extending devices; a clamp body matched with the flexible isolation strip on the extension device is further arranged at the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine, a fastening device is arranged on the side wall inside the reserved slot, and a flexible sealing brush is arranged on the fastening device; the device for preventing soil from backing in the tunneling process of the rectangular pipe jacking tunnel and the construction method thereof are further arranged on the rectangular pipe jacking machine, so that the soil layer environment above the pipe jacking tunnel is effectively ensured, and the construction safety of enterprises is improved.
Description
Technical Field
The invention belongs to the technical field of underground engineering construction; in particular to a device for preventing soil backing in rectangular pipe jacking construction and a construction method thereof.
Background
Along with the development of urban underground space construction, the requirements on underground engineering construction technology are also higher and higher; the pipe jacking method is widely applied to projects such as tunnels and underground pipelines as an underground space underground excavation construction technology, and is an important construction technology of urban underground tunnel engineering due to high section utilization rate and small influence on surrounding environment, but in the construction and propulsion process of the rectangular pipe jacking machine, because mutual friction exists between a pipe jacking machine head and pipe jacking pipe joints and surrounding soil bodies and a friction contact surface is large, the pipe jacking pipe joints and the pipe jacking machine head can drive the soil bodies above the pipe jacking machine head to move forwards due to excessive friction force so as to cause soil backing phenomenon, so that soil layers above the pipe jacking tunnel are seriously disturbed, even earth surface soil bodies are raised or sunk, and the soil layer environment above the pipe jacking tunnel is greatly influenced; at present, a method of injecting thixotropic slurry around a pipe joint by preventive measures is often adopted in the prior art to reduce the back soil phenomenon, wherein a cap peak structure is added at a notch ring of a pipe jacking machine, thixotropic slurry holes are reserved in the cap peak structure and at a hinged position, thixotropic slurry is injected in real time in the pipe jacking tunneling process, and a thixotropic slurry sleeve is formed, so that the friction between the thixotropic slurry sleeve and a stratum is reduced; however, the thixotropic slurry sleeve can reduce the friction force between the jacking pipe and the upper soil body, but cannot sufficiently eliminate the phenomenon of soil backing, and stratum and ground surface damage cannot be avoided yet; in the prior art, a pipe shed or grouting reinforcement isolation layer is arranged above the pipe-jacking tunnel, and the pipe-jacking tunneling machine and the pipe-jacking pipe joint are mutually separated from soil on the upper part of the pipe-jacking tunnel by the isolation layer, but the method needs to add extra cost, and the pipe shed possibly invades the section of the tunnel, so that construction barriers are caused.
Disclosure of Invention
The invention aims at:
the device is mainly used for preventing soil from backing in the tunneling process of the rectangular pipe-jacking tunnel and the construction method thereof, so that the phenomenon that the pipe-jacking pipe joint and the head of the pipe-jacking tunneling machine can drive the soil above the pipe-jacking pipe joint to move forwards due to excessive friction is effectively prevented, and the construction phenomenon that the soil above the pipe-jacking tunnel is severely disturbed and the soil on the earth surface is raised or sunk is effectively avoided; the soil layer environment above the effectual guarantee pipe-jacking tunnel, the effectual efficiency of construction that improves the tunneling process of rectangle pipe-jacking tunnel, the effectual construction cost who reduces the enterprise, the safe construction and the surrounding environment safety of effectual guarantee tunneling process, the effectual tunneling engineering quality who improves rectangle pipe-jacking tunneling machine, the economic benefits of effectual improvement enterprise.
The technical scheme of the invention is as follows:
the device comprises a plurality of extension devices arranged at the front end or the shield tail of the rectangular pipe pushing machine, wherein the extension devices comprise flexible isolation strips, and reserved slots are arranged at the top positions of the rectangular pipe pushing machine above the extension devices; a clamp body matched with the flexible isolation strip on the extension device is further arranged at the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine, a fastening device is arranged on the side wall inside the reserved slot, and a flexible sealing brush is arranged on the fastening device; the rectangular pipe jacking machine is further provided with a grease pump, the upper part of the flexible sealing brush in the reserved slot is further provided with an oil filling port corresponding to the position of the flexible sealing brush, and the grease pump is communicated with the oil filling port through a grease conveying pipe.
The extension device comprises two mutually symmetrical connecting supports arranged at the top of the rectangular pipe pushing jack, a connecting rolling shaft is arranged between the connecting supports, a roller is sleeved on the connecting rolling shaft, one end of a flexible isolation strip is wound on the roller, and the other end of the flexible isolation strip is fixed with a fixture body.
The clamp body comprises clamping frames which are symmetrically arranged in a fold line shape, clamping springs are arranged between the clamping frames, and the clamp body is fixedly arranged at the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine through locking screws.
The reserved slot is a slot opening which is obliquely arranged and is in a rectangular structure.
The inclination angle of the reserved slot is 30-60 degrees.
The bandwidth of the flexible isolation strip is 40 cm-60 cm; the distance between the flexible isolation strips arranged on the adjacent extension devices is 0-30 cm; the cross section width of the reserved slot matched with the flexible isolation strip is 42 cm-62 cm, and the cross section width of the other end of the reserved slot is 10 cm-15 cm.
The fastening device comprises a fastening frame of a zigzag structure, the fastening frame is fixed on the inner side wall of the reserved slot through a fastening screw, a flexible sealing brush is arranged on the fastening frame, and the front end part of the flexible sealing brush is arranged next to the flexible isolation strip.
The flexible sealing brush is arranged on a single side wall or two mutually symmetrical side walls inside the reserved slot through a fastening device; the number of the oil filling ports corresponding to the flexible sealing brushes arranged on the inner wall of the reserved slot is single or double.
The flexible isolation strip is a high-strength and toughness fiber film strip, and the brush head of the flexible sealing brush is made of nylon wires or DuPont wires.
The construction method of the device for preventing soil backing in rectangular pipe jacking construction comprises the following steps:
(1) Arranging an extension device at the front section or the shield tail of the push bench, and arranging a reserved slot at the top position of the push bench above the extension device; installing a clamping body at the position of a tunnel portal in the jacking direction of the pushing starting end and the rectangular pipe jacking machine;
(2) Flexible sealing brushes are arranged on two side walls in the reserved slot; a grease pump and a grease conveying pipe are arranged in the pipe jacking machine;
(3) A high-strength flexible film strip is adopted as a flexible isolation strip, one end of the flexible isolation strip is fixed on the clamp body, and the other end is wound in the extension device;
(4) Along with the propelling process, the flexible isolation strip is paved on the outer top of the pipe joint or the outer top of the machine body and the pipe joint, and simultaneously a grease pump is started and injected into the oil injection port through the grease conveying pipe;
(5) Stopping injecting grease after pushing is finished, and cutting off the flexible isolation strip.
The beneficial effects of the invention are as follows:
according to the device for preventing soil backing in the tunneling process of the rectangular pipe-jacking tunnel and the construction method thereof, provided by the invention, the phenomenon that the pipe-jacking pipe joint and the machine head of the pipe-jacking tunneling machine can drive the soil above the pipe-jacking pipe joint to move forwards due to excessive friction force is effectively prevented, and the construction phenomena that the soil layer above the pipe-jacking tunnel is severely disturbed and the soil on the earth surface is raised or sunk are effectively avoided; the soil layer environment above the pipe-jacking tunnel is effectively guaranteed, the construction efficiency in the rectangular pipe-jacking tunnel tunneling process is effectively improved, the construction cost of enterprises is effectively reduced, the construction safety and the surrounding environment safety in the tunneling process are effectively guaranteed, the tunneling engineering quality of the rectangular pipe-jacking tunneling machine is effectively improved, and the economic benefit of the enterprises is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a second schematic diagram of the structure of the present invention;
fig. 3 is a schematic view of the structure of the reserved slot part of the present invention.
In the figure; 1 is an extension device; 2 is a flexible isolation strip; 3 is a reserved slot; 4 is a fixture body; 5 is a fastening device; 6 is a flexible sealing brush; 7 is a grease pump; 8 is an oil filling port; 9 is a grease conveying pipe; 10 is a connecting support; 11 is a connecting roller; 12 is a roller; 13 is a clamping frame; 14 is a clamping spring; 15 is a locking screw; 16 is a fastening frame; and 17 is a fastening screw.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1 to 3, there is provided a device for preventing back soil in rectangular pipe jacking construction, the device comprising a plurality of extension devices 1 arranged at the front end or the shield tail of a rectangular pipe jacking machine, the extension devices comprising flexible isolation strips 2, and reserved slots 3 arranged at the top positions of the rectangular pipe jacking machine above the plurality of extension devices; the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine is also provided with a clamp body 4 matched with the flexible isolation strip on the extension device, the side wall in the reserved slot is provided with a fastening device 5, and the fastening device is provided with a flexible sealing brush 6; the rectangular push bench is also provided with a grease pump 7, the upper part of the flexible sealing brush in the reserved slot is also provided with an oil filling port 8 corresponding to the position of the flexible sealing brush, and the grease pump is communicated with the oil filling port through a grease conveying pipe 9.
The extension device comprises two mutually symmetrical connecting supports 10 arranged at the top of the rectangular pipe pushing jack, connecting rollers 11 are arranged between the connecting supports, rollers 12 are sleeved on the connecting rollers, one ends of flexible isolation strips are wound on the rollers, and the other ends of the flexible isolation strips are fixed with the clamp body.
The clamp body comprises clamping frames 13 which are symmetrically arranged in a zigzag shape, clamping springs 14 are arranged between the clamping frames, and the clamp body is fixedly arranged at the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine through locking screws 15.
The reserved slot is a slot opening which is obliquely arranged and is in a rectangular structure.
The inclination angle of the reserved slot is 30-60 degrees.
The bandwidth of the flexible isolation strip is 40 cm-60 cm; the distance between the flexible isolation strips arranged on the adjacent extension devices is 0-30 cm; the cross section width of the reserved slot matched with the flexible isolation strip is 42 cm-62 cm, and the cross section width of the other end of the reserved slot is 10 cm-15 cm.
The fastening device comprises a fastening frame 16 with a fold line-shaped structure, the fastening frame is fixed on the inner side wall of the reserved slot through a fastening screw 17, a flexible sealing brush is arranged on the fastening frame, and the front end part of the flexible sealing brush is arranged next to the flexible isolation strip.
The flexible sealing brush is arranged on a single side wall or two mutually symmetrical side walls inside the reserved slot through a fastening device; the number of the oil filling ports corresponding to the flexible sealing brushes arranged on the inner wall of the reserved slot is single or double.
The flexible isolation strip is a high-strength and toughness fiber film strip, and the brush head of the flexible sealing brush is made of nylon wires or DuPont wires.
The construction method of the device for preventing soil backing in rectangular pipe jacking construction comprises the following steps:
(1) Arranging an extension device at the front section or the shield tail of the push bench, and arranging a reserved slot at the top position of the push bench above the extension device; installing a clamping body at the position of a tunnel portal in the jacking direction of the pushing starting end and the rectangular pipe jacking machine;
(2) Flexible sealing brushes are arranged on two side walls in the reserved slot; a grease pump and a grease conveying pipe are arranged in the pipe jacking machine;
(3) A high-strength flexible film strip is adopted as a flexible isolation strip, one end of the flexible isolation strip is fixed on the clamp body, and the other end is wound in the extension device;
(4) Along with the propelling process, the flexible isolation strip is paved on the outer top of the pipe joint or the outer top of the machine body and the pipe joint, and simultaneously a grease pump is started and injected into the oil injection port through the grease conveying pipe;
(5) Stopping injecting grease after pushing is finished, and cutting off the flexible isolation strip.
According to the device for preventing the back soil in the rectangular jacking pipe construction and the construction method thereof, the device can be divided into two arrangement modes of the top of the front end of the machine body and the top of the shield tail according to the arrangement position of the extension device on the device for preventing the back soil; the following describes the technology further under the condition that the extension device is arranged at the top of the shield tail:
firstly, arranging extension devices arranged on the rectangular pipe jacking construction soil backing prevention device on the top of the shield tail of the machine body through connecting supports, connecting rolling shafts at two ends of each extension device through two connecting supports, tightly sleeving rollers on the connecting rolling shafts, and storing flexible isolation strips; the extension devices can be arranged side by side according to the laying number and the position of the flexible isolation strips.
The flexible isolation strip is made of high-strength and toughness fiber film material, and the thickness of the flexible isolation strip is 1-2 mm; one end of the device is fixed and wound and overlapped on the roller, and the other end is pulled out through a laying port of the reserved slot to reach a starting end fixing device and is fixed by the clamp body; in the pushing process of the rectangular pipe pushing machine, the roller rolls along with the pushing process, so that the flexible isolation strips are uniformly paved forwards.
The flexible isolation strips used in the invention are paved in parallel in a plurality of parallel way, each width is 40 mm-60 cm, and the distance between adjacent isolation strips is 0-30 mm.
The laying port of the reserved slot is mainly used for the passing of the flexible isolation strip, the reserved slot is arranged at the top of the machine body above each extending device, and the reserved slot and the laying port are arranged in corresponding numbers according to the position of the flexible isolation strip; in order to reduce the resistance of the strip when being paved to pass through the reserved slot, the opening of the reserved slot is opened into a rectangular structure-shaped bevel opening, and the cross section width of the reserved slot penetrating through the flexible isolation strip is set to be 42 mm-62 cm; the width of the cross section of the other end is set to be 10 mm-15 mm, so that the fastening device is conveniently arranged in the slot opening.
Two side walls or a single side wall inside the reserved slot are provided with special flexible sealing brushes for retaining water and soil at the laying port of the reserved slot; the flexible sealing brush is fixed by fastening screw nails, and the brush wire material of the brush head adopts common nylon wires or DuPont wires.
The grease pump arranged on the rectangular pipe jacking machine is used for pumping grease, and the grease is injected into the brush head of the flexible sealing brush through the grease conveying pipe and the oil injection port arranged on the side wall of the laying port of the reserved slot, so that the functions of sealing and lubricating the flexible isolation strip are effectively achieved; the grease pump can be flexibly arranged at a proper position inside the push bench; the grease conveying pipe is connected to the grease pump and is paved to the oil filling port through the inside of the machine top; the oil filling port is arranged at the position close to the upper part of the flexible sealing brush.
A clamp body is fixed at the initial end of the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine, the clamp body is installed at the initial pushing position by a clamping screw nail, and the flexible isolation strip is fixed by the clamp body; the clamp body is also arranged in parallel side by side according to the number of the strips when being arranged, and keeps horizontal consistency with the front flexible isolation strips.
In the pushing process of the push bench, the connecting roller is driven to rotate, a flexible isolation strip is paved along with the connecting roller, and meanwhile, a grease pump is started, and grease is injected through the oil injection port for sealing; after the pushing is finished, the grease pump is closed, and the front end and the rear end of all the flexible isolation strips are cut off, so that the laying work is finished; all the remaining devices and materials can be used for paving the flexible isolation strip initiated at the top end of the next stage.
When the rectangular pipe jacking construction device for preventing soil backing and the construction method thereof are arranged at the top of the front end of the machine body, the rectangular pipe jacking construction device is the same as the case that the extension device is arranged at the top of the shield tail and the use method thereof, and further description is omitted herein.
According to the device for preventing soil backing in the tunneling process of the rectangular pipe-jacking tunnel and the construction method thereof, provided by the invention, the phenomenon that the pipe-jacking pipe joint and the machine head of the pipe-jacking tunneling machine can drive the soil above the pipe-jacking pipe joint to move forwards due to excessive friction force is effectively prevented, and the construction phenomena that the soil layer above the pipe-jacking tunnel is severely disturbed and the soil on the earth surface is raised or sunk are effectively avoided; the soil layer environment above the pipe-jacking tunnel is effectively guaranteed, the construction efficiency in the rectangular pipe-jacking tunnel tunneling process is effectively improved, the construction cost of enterprises is effectively reduced, the construction safety and the surrounding environment safety in the tunneling process are effectively guaranteed, the tunneling engineering quality of the rectangular pipe-jacking tunneling machine is effectively improved, and the economic benefit of the enterprises is effectively improved.
Claims (10)
1. The utility model provides a device that rectangular pipe jacking construction prevents back of body soil which characterized in that: the device comprises a plurality of extension devices arranged at the front end or the shield tail of the rectangular pipe pushing jack, wherein the extension devices comprise flexible isolation strips, and reserved slots are arranged at the top positions of the rectangular pipe pushing jack above the extension devices; a clamp body matched with the flexible isolation strip on the extension device is further arranged at the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine, a fastening device is arranged on the side wall inside the reserved slot, and a flexible sealing brush is arranged on the fastening device; the rectangular pipe jacking machine is also provided with an oil pump, the upper part of the flexible sealing brush in the reserved slot is also provided with an oil filling port corresponding to the position of the flexible sealing brush, and the oil pump is communicated with the oil filling port through an oil conveying pipe;
the clamp body comprises clamping frames which are symmetrically arranged in a zigzag shape, and clamping springs are arranged between the clamping frames;
the flexible sealing brush is arranged on a single side wall or two symmetrical side walls inside the reserved slot through a fastening device.
2. The device for preventing back soil for rectangular pipe jacking construction according to claim 1, wherein: the extension device comprises two mutually symmetrical connecting supports arranged at the top of the rectangular pipe pushing jack, a connecting rolling shaft is arranged between the connecting supports, a roller is sleeved on the connecting rolling shaft, one end of a flexible isolation strip is wound on the roller, and the other end of the flexible isolation strip is fixed with a fixture body.
3. The device for preventing back soil for rectangular pipe jacking construction according to claim 1 or 2, wherein: the clamp body is fixedly arranged at the position of the tunnel portal in the jacking direction of the rectangular pipe jacking machine through a locking screw.
4. The device for preventing back soil for rectangular pipe jacking construction according to claim 1, wherein: the reserved slot is a slot opening which is obliquely arranged and is in a rectangular structure.
5. The device for preventing back soil for rectangular pipe jacking construction according to claim 4, wherein: the inclination angle of the reserved slot is 30-60 degrees.
6. The device for preventing back soil for rectangular pipe jacking construction according to claim 2 or 4, wherein: the bandwidth of the flexible isolation strip is 40 cm-60 cm; the distance between the flexible isolation strips arranged on the adjacent extension devices is 0-30 cm; the cross section width of the reserved slot matched with the flexible isolation strip is 42 cm-62 cm, and the cross section width of the other end of the reserved slot is 10 cm-15 cm.
7. The device for preventing back soil for rectangular pipe jacking construction according to claim 1, wherein: the fastening device comprises a fastening frame of a zigzag structure, the fastening frame is fixed on the inner side wall of the reserved slot through a fastening screw, a flexible sealing brush is arranged on the fastening frame, and the front end part of the flexible sealing brush is arranged next to the flexible isolation strip.
8. The device for preventing back soil for rectangular pipe jacking construction according to claim 1 or 7, wherein: the number of the oil filling ports corresponding to the flexible sealing brushes arranged on the inner wall of the reserved slot is single or double.
9. The device for preventing back soil for rectangular pipe jacking construction according to claim 1, wherein: the flexible isolation strip is a high-strength and toughness fiber film strip, and the brush head of the flexible sealing brush is made of nylon wires or DuPont wires.
10. A construction method of a device for preventing back earth by rectangular jacking pipe construction according to any one of claims 1 to 9, characterized by comprising:
(1) Arranging an extension device at the front section or the shield tail of the push bench, and arranging a reserved slot at the top position of the push bench above the extension device; installing a clamping body at the position of a tunnel portal in the jacking direction of the pushing starting end and the rectangular pipe jacking machine;
(2) Flexible sealing brushes are arranged on two side walls in the reserved slot; a grease pump and a grease conveying pipe are arranged in the pipe jacking machine;
(3) A high-strength flexible film strip is adopted as a flexible isolation strip, one end of the flexible isolation strip is fixed on the clamp body, and the other end is wound in the extension device;
(4) Along with the propelling process, the flexible isolation strip is paved on the outer top of the pipe joint or the outer top of the machine body and the pipe joint, and simultaneously a grease pump is started and injected into the oil injection port through the grease conveying pipe;
(5) Stopping injecting grease after pushing is finished, and cutting off the flexible isolation strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343168.0A CN108457660B (en) | 2018-04-17 | 2018-04-17 | Device for preventing back soil in rectangular pipe jacking construction and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343168.0A CN108457660B (en) | 2018-04-17 | 2018-04-17 | Device for preventing back soil in rectangular pipe jacking construction and construction method thereof |
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| Publication Number | Publication Date |
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| CN108457660A CN108457660A (en) | 2018-08-28 |
| CN108457660B true CN108457660B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810343168.0A Active CN108457660B (en) | 2018-04-17 | 2018-04-17 | Device for preventing back soil in rectangular pipe jacking construction and construction method thereof |
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| CN101532386A (en) * | 2009-04-09 | 2009-09-16 | 上海建工（集团）总公司 | Method and device for underpinning antifriction separator for shallow underground space construction |
| CN102966357A (en) * | 2012-12-11 | 2013-03-13 | 上海市机械施工有限公司 | Earth accumulation preventing device and earth accumulation preventing method of rectangular tunnel boring machine head and rectangular tunnel boring machine |
| CN103711498A (en) * | 2013-12-30 | 2014-04-09 | 上海市机械施工集团有限公司 | Earth accumulation prevention device and method of rectangular shield tunneling machine |
| CN105484751A (en) * | 2015-02-04 | 2016-04-13 | 中铁隧道勘测设计院有限公司 | Method for preventing large-section rectangular pipe-jacking tunnel from generating soil loading phenomenon |
| CN107387133A (en) * | 2017-08-22 | 2017-11-24 | 华东交通大学 | A kind of shield tunnel outer embrane applies device and its applies method |
| CN208073483U (en) * | 2018-04-17 | 2018-11-09 | 中铁工程装备集团有限公司 | A kind of rectangular top pipe construction prevents the device of back of the body soil |
-
2018
- 2018-04-17 CN CN201810343168.0A patent/CN108457660B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532386A (en) * | 2009-04-09 | 2009-09-16 | 上海建工（集团）总公司 | Method and device for underpinning antifriction separator for shallow underground space construction |
| CN102966357A (en) * | 2012-12-11 | 2013-03-13 | 上海市机械施工有限公司 | Earth accumulation preventing device and earth accumulation preventing method of rectangular tunnel boring machine head and rectangular tunnel boring machine |
| CN103711498A (en) * | 2013-12-30 | 2014-04-09 | 上海市机械施工集团有限公司 | Earth accumulation prevention device and method of rectangular shield tunneling machine |
| CN105484751A (en) * | 2015-02-04 | 2016-04-13 | 中铁隧道勘测设计院有限公司 | Method for preventing large-section rectangular pipe-jacking tunnel from generating soil loading phenomenon |
| CN107387133A (en) * | 2017-08-22 | 2017-11-24 | 华东交通大学 | A kind of shield tunnel outer embrane applies device and its applies method |
| CN208073483U (en) * | 2018-04-17 | 2018-11-09 | 中铁工程装备集团有限公司 | A kind of rectangular top pipe construction prevents the device of back of the body soil |
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| CN108457660A (en) | 2018-08-28 |
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