CN114352295A - Shield machine has shield tail brush that prevents mortar entering function - Google Patents
Shield machine has shield tail brush that prevents mortar entering function Download PDFInfo
- Publication number
- CN114352295A CN114352295A CN202111649953.7A CN202111649953A CN114352295A CN 114352295 A CN114352295 A CN 114352295A CN 202111649953 A CN202111649953 A CN 202111649953A CN 114352295 A CN114352295 A CN 114352295A
- Authority
- CN
- China
- Prior art keywords
- shield
- shield tail
- tail brush
- mortar
- brush
- 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.)
- Pending
Links
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000004519 grease Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
-
- 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a shield tail brush with a function of preventing mortar from entering a shield machine, which comprises a protection plate, a pressing plate, a steel wire bundle, a rubber sealing gasket, a rubber anti-seepage belt and the like; the adjacent shield tail brushes are mutually overlapped, a circle of annular shield tail brushes are formed around the interior of a tail shield shell, rubber sealing gaskets at the edges of the pressing plates between the shield tail brushes are mutually extruded to seal overlapped gaps on the surfaces of the pressing plates, rubber anti-seepage belts are arranged at the ends of the pressing plates, and the rubber anti-seepage belts are tightly attached to the assembled pipe sheet rings under the action of mortar pressure; the invention can effectively block the gap between the inside and the outside of the shield tail brush, prevent mortar from leaking into the shield tail brush and the grease cavity from the joint of the shield tail brush compacting plate and the gap between the shield tail brush and the segment ring, effectively avoid the problems of slurry leakage and water leakage caused by the problem that the mortar of the traditional shield tail brush enters the hardening problem, and greatly improve the sealing performance of the shield tail brush-grease cavity system.
Description
Technical Field
The invention belongs to the technical field of engineering mechanical equipment, and particularly relates to a shield tail brush of a shield machine with a function of preventing mortar from entering.
Background
The shield tail brush is one of key components of a shield tail sealing system. In the shield propelling process, when the shield tail and the assembled duct piece move relatively, the elastic performance of the shield tail brushes can ensure that the shield shell and the duct piece are always in a fit state under certain pressure, and meanwhile, a sealed cavity is formed between the adjacent shield tail brushes, so that pressure grease in the cavity can be ensured not to escape, and a shield tail annular sealing system is formed to play a role in sealing and water stopping.
However, the shield tail brush commonly used at present is composed of a metal sheet and a steel wire brush, the close fit between the shield tail brush and the shield segment is difficult to achieve the purpose of completely preventing mortar and muddy water in the gap of the shield tail from entering, and particularly, the shield tail grease pressure is inevitably controlled improperly. Mortar entering in the shield tail space will lead to hardening, elastic loss, the shield of shield tail brush in-process increase wearing and tearing and press various problems such as disconnected even, lead to sealed effect to descend, will lead to a large amount of silt to gush into similar mud-rock flow state when serious, thereby the peripheral ground in tunnel will be brought into the tunnel and caused the tunnel to permeate water and collapse by being vacated this moment, need often overhaul, protection and change, seriously obstruct the construction progress, increase construction cost. Therefore, a shield tail brush is required to be designed to effectively improve the sealing effect and prevent mortar leakage.
Some existing shield tail brush patents such as chinese patent No. 201811125072.3 disclose a shield tail brush and shield machine, which realize sealing performance under high pressure environment by using a steel wire layer to relatively protrude a first steel plate and a second steel plate; also, as in chinese patent No. 201620091185.6, a shield tail brush of a shield tunneling machine is disclosed, which employs front and rear folded elastic steel sheets to form two contact points with a segment to prevent sludge and mortar from entering an oil cavity. The defects of poor sealing effect, easy abrasion and fracture generation under the environment of unreasonable stress and high pressure and the like still exist in the patents.
Disclosure of Invention
In order to improve the sealing effect of the shield tail brush and prevent a series of engineering hazards caused by leakage of the shield tail brush, the invention provides the shield tail brush with the function of preventing mortar from entering the shield tail brush, which has the function of preventing leakage, can effectively avoid the problems of slurry leakage and water leakage of the traditional shield tail brush, and improves the sealing performance of the shield tail brush.
The technical scheme adopted by the invention is as follows:
the utility model provides a shield constructs machine and has shield tail brush that prevents mortar entering function which characterized in that: the shield tail brush is arranged between the shield tail shield shell and the segment ring and annularly arranged around the inner wall of the shield shell, and comprises a pressing plate, a protection plate, a steel wire bundle, a rubber anti-seepage belt and a rubber sealing gasket, wherein the rubber anti-seepage belt and the rubber sealing gasket can seal seepage gaps between the shield tail brush and the segment ring, so that synchronous grouting mortar is prevented from entering the shield tail brush to cause damage to the shield tail brush.
Furthermore, the tail part of the pressing plate is provided with a rubber anti-seepage belt with the same width as the pressing plate, the rubber anti-seepage belt is tightly attached to the assembled pipe sheet ring under the action of synchronous grouting mortar pressure, and mortar is prevented from entering the shield tail brush and the grease cavity from a gap between the shield tail brush and the pipe sheet ring.
Furthermore, the rubber sealing gaskets are positioned at the edges of two sides of the pressing plates, after the shield tail brushes are assembled, the adjacent pressing plates mutually extrude the rubber sealing gaskets at the lap joints, lap gaps on the surfaces of the pressing plates are sealed, and mortar is prevented from entering the shield tail brushes and the grease cavity from gaps between the adjacent pressing plates.
Furthermore, the rubber anti-seepage belt is arranged at the protruding part of the end part of the pressure strip and is a high-strength elastic waterproof belt made of wear-resistant rubber materials.
Advantageous effects
The invention can improve the sealing effect of the shield tail brush, prevent mortar from intruding into the shield tail brush to be hardened, and cause various problems of elastic loss, abrasion, pressure fracture and the like of the shield tail brush, ensure the safety of shield construction and improve the construction efficiency.
Description of the drawings:
FIG. 1 is a schematic side view of a shield tail brush with a mortar-entering prevention function of a shield machine provided by the invention;
FIG. 2 is a schematic diagram of a shield tail brush lap joint back structure of a shield machine provided by the invention with a function of preventing mortar from entering;
FIG. 3 is a schematic diagram of the seepage-proofing effect of a shield tail brush with a mortar entering prevention function of the shield machine provided by the invention;
FIG. 4 is a schematic diagram of the position of a shield tail brush ring shield shell of the shield machine with a function of preventing mortar from entering.
In the attached figures 1-4
The shield comprises a shield shell 1, a segment ring 2, a shield tail brush 3, mortar 4, a compacting plate 6, shield grease 5, a protective plate 7, a steel wire bundle 8, a rubber impermeable belt 9, an upper plate 10, a lower plate 10 and a rubber sealing gasket 12.
The specific implementation mode is as follows:
in order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a shield constructs quick-witted shield tail brush that has prevention mortar entering function which characterized in that: the shield tail brush (3) is arranged between a shield tail shield shell (1) and a duct piece ring (2) and annularly arranged around the inner wall of the shield shell (1), the shield tail brush (3) comprises a pressing plate (6), a protection plate (7), a steel wire bundle (8), a rubber anti-seepage belt (9) and a rubber sealing gasket (12), and the rubber anti-seepage belt (9) and the rubber sealing gasket (12) can block seepage gaps between the shield tail brushes (3) and between the shield tail brush (3) and the duct piece ring (2), so that synchronous grouting mortar (4) is prevented from entering the shield tail brush (3) and damaging the shield tail brush (3).
The tail part of the pressing plate (6) is provided with a rubber anti-seepage belt (9) with the same width as the pressing plate, the rubber anti-seepage belt (9) is tightly attached to the assembled pipe sheet ring (2) under the action of the pressure of the synchronous grouting mortar (4), and the mortar (4) is prevented from entering the shield tail brush (3) and the grease cavity from a gap between the shield tail brush (3) and the pipe sheet ring (2).
The rubber sealing gasket (12) is located the both sides border of pressure strip (6), and the back is assembled in shield tail brush (3), and adjacent pressure strip (6) extrude the rubber sealing gasket (12) of overlap joint department each other, seals the overlap joint space on pressure strip (6) surface, prevents that mortar (4) from entering into shield tail brush (3) and grease chamber from the clearance between adjacent pressure strip (6).
The rubber anti-seepage belt (9) is arranged at the protruding part of the end part of the pressure plate (6) and is a high-strength elastic waterproof belt made of wear-resistant rubber materials.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents. The undescribed parts of the present invention are the same as or implemented using prior art.
Claims (4)
1. The utility model provides a shield constructs quick-witted shield tail brush that has prevention mortar entering function which characterized in that: the shield tail brush (3) is arranged between a shield tail shield shell (1) and a duct piece ring (2) and annularly arranged around the inner wall of the shield shell (1), the shield tail brush (3) comprises a pressing plate (6), a protection plate (7), a steel wire bundle (8), a rubber anti-seepage belt (9) and a rubber sealing gasket (12), the rubber anti-seepage belt (9) and the rubber sealing gasket (12) can seal leakage gaps between the shield tail brush (3) and the duct piece ring (2), and the synchronous grouting mortar (4) is prevented from entering the shield tail brush (3) to cause the damage of the shield tail brush (3).
2. The shield machine of claim 1, wherein the shield tail brush has a function of preventing mortar from entering, and the shield machine comprises: the tail of the pressing plate (6) is provided with a rubber anti-seepage belt (9) with the same width as the pressing plate, the rubber anti-seepage belt (9) is tightly attached to the assembled pipe sheet ring (2) under the action of the pressure of synchronous grouting mortar (4), and the mortar (4) is prevented from entering the shield tail brush (3) and the grease cavity from a gap between the shield tail brush (3) and the pipe sheet ring (2).
3. The shield machine of claim 1, wherein the shield tail brush has a function of preventing mortar from entering, and the shield machine comprises: rubber seal pad (12) are located pressure strip (6) both sides border, and the back is assembled in shield tail brush (3), and adjacent pressure strip (6) extrude the rubber seal pad (12) of overlap joint department each other, seals the overlap joint space on pressure strip (6) surface, prevents that mortar (4) from entering into shield tail brush (3) and grease chamber from the clearance between adjacent pressure strip (6).
4. The shield machine of claim 1, wherein the shield tail brush has a function of preventing mortar from entering, and the shield machine comprises: the rubber anti-seepage belt (9) is arranged at the protruding part of the end part of the pressing plate (6) and is a high-strength elastic waterproof belt made of wear-resistant rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649953.7A CN114352295A (en) | 2021-12-27 | 2021-12-27 | Shield machine has shield tail brush that prevents mortar entering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649953.7A CN114352295A (en) | 2021-12-27 | 2021-12-27 | Shield machine has shield tail brush that prevents mortar entering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114352295A true CN114352295A (en) | 2022-04-15 |
Family
ID=81104097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111649953.7A Pending CN114352295A (en) | 2021-12-27 | 2021-12-27 | Shield machine has shield tail brush that prevents mortar entering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114352295A (en) |
-
2021
- 2021-12-27 CN CN202111649953.7A patent/CN114352295A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication |