CN105422140A - Template supporting device for concrete supporting construction of shaft and lane engineering - Google Patents
Template supporting device for concrete supporting construction of shaft and lane engineering Download PDFInfo
- Publication number
- CN105422140A CN105422140A CN201511028717.8A CN201511028717A CN105422140A CN 105422140 A CN105422140 A CN 105422140A CN 201511028717 A CN201511028717 A CN 201511028717A CN 105422140 A CN105422140 A CN 105422140A
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- China
- Prior art keywords
- steel
- channel
- vault
- rod
- section steel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
Abstract
The invention discloses a template supporting device for concrete supporting construction of shaft and lane engineering and relates to a template supporting device for cast-in-place concrete of shaft and lane engineering. The template supporting device comprises wall templates and a vault template and is characterized in that the template supporting device comprises steel joists and fixing anchor rods, wherein each steel joint comprises a cross arm, stand columns and a vault beam; each fixing anchor rod comprises a rod body, a cover plate and a nut; the steel joints are mounted at intervals in the length direction of the poured concrete roadway, and the rod bodies penetrate through the steel joists and are fixed in surrounding rock; the wall templates and the vault template are laid on two steel joists, concrete is poured between the surrounding rock and the templates, and the wall templates and the vault template are laid sequentially with increasing of height of the poured concrete; the steel joists are dismounted after concrete setting, the concrete surface is covered with the cover plate, and composite supporting is formed. The template supporting device has the advantages that the template supporting device is novel in concept, stable and firm in structure, simple to manufacture, convenient to mount and capable of being repeatedly used and wood materials are saved; the roadway is unimpeded, the construction is convenient, and the production efficiency is improved; the strength of the steel joists is high and integrally connected with the surrounding rock to form a stereoscopic structure, and the strength of the supporting device is greatly improved.
Description
Technical field
The invention belongs to concrete support technical field, particularly relate to well lane engineering cast-in-situ concrete and steel concrete support template device.
Background technology
Cast-in-situ concrete and cast-in-situ steel reinforced concrete supporting are form of structure important in well lane engineering permanent support, are usually used in the well lane engineering supporting higher to ingate, Substation Chamber, pump house chamber, crushing cave and rock crusher degree that supporting class requirement is higher.During traditional cast-in-situ concrete supporting, need first to set up in tunnel multiple tracks horizontal support and vertical support for fixed form keel, keel are installed wall form and vault template, concreting.There is shortcoming is that tunnel is blocked, and holding time is long, and need wait until just dismountable whole support after concrete setting, enter next step driving or supporting operation, efficiency of construction is low, current, construction is inconvenient; The multiplex timber of horizontal support, vertical support, keel and template makes, and fabrication and installation are taken a lot of work, time-consuming, and lumber consumption is many, serious waste resource.
Summary of the invention
For overcoming the defect of prior art, the object of the present invention is to provide a kind of well lane engineering concrete support construction erecting device, Stability Analysis of Structures is firm, preparation method is simple, easy for installation, cost is low, reusable, concreting operation can be carried out continuously, safe and reliable.
Well lane engineering concrete support construction erecting device, comprises wall form and vault template, is characterized in that this erecting device is made up of steel joist and fixing anchor bar; The stull of described steel joist, column and vault beam are made up of channel-section steel, and channel-section steel web surface is facing to country rock, and stull, column and vault beam connect and compose the airtight steel joist of high strength by connector at the bottom of wall and wall roof connecting; Described fixing anchor bar is made up of the body of rod, cover plate and nut; Described steel joist is positioned on the body of rod by cover plate and nut, and the body of rod fixedly secures by boring in country rock by Anchor Agent; Described every Pin steel joist is along needing the tunnel length direction of concreting to install by 700 ~ 1500mm interval; Described wall form and vault model sheetinstallat are between two Pin steel joists, and template and channel-section steel web surface are abutted against, and lay successively along with concreting height extends; Remove steel joist after concrete setting, the cover plate unloaded is contained on the body of rod again, fastening nut, and concrete and fixing anchor bar form concrete anchor rod composite support.
Further improvement of the present invention, described stull is processed by 18 ~ 22# channel-section steel, and during installation, channel-section steel web surface is connected with column bottom facing to country rock; Two oblong bolts hole are at least established at stull two ends, for installing connector at the bottom of wall.
Further improvement of the present invention, described column is processed by 18 ~ 22# channel-section steel, during installation, channel-section steel web surface is facing to country rock, and channel-section steel web surface is arranged the oblong bolt hole that, diameter corresponding with fixing anchor bar position and body of rod diameter compatible close, the fixing anchor bar body of rod passes channel-section steel bolt hole; Two oblong bolts hole are at least established at column two ends, for installing connector at the bottom of wall and wall roof connecting; Column stretches into below roadway floor 200mm.
Further improvement of the present invention, described vault beam is in the arc-shaped by 18 ~ 22# channel-section steel bending machining; Vault beam channel-section steel web surface is facing to country rock, and channel-section steel web surface is arranged the oblong bolt hole that, diameter corresponding with fixing anchor bar position and body of rod diameter compatible close, the fixing anchor bar body of rod passes channel-section steel bolt hole; Two oblong bolts hole are at least established at vault beam two ends, for installing wall roof connecting.
Further improvement of the present invention, described tunnel or chamber crown section are semicircle, three-core arch, ellipse or straight shape, vault beam is processed into corresponding semicircle, three-core arch, ellipse or straight shape, for the semicircle vault of supporting, three heart-shaped vaults, oval vault or straight shape vault tunnel or chamber.
Further improvement of the present invention, described fixing anchor bar at least uses nine on every Pin steel joist, the body of rod is that the left-handed nothing of diameter 20 ~ 26mm indulges muscle screw-thread steel, length is longer than drilling depth, concreting thickness and steel frame thickness sum, dovetail is established in body of rod inner end/end, be placed in wall rock drill-hole, fixed by Anchor Agent, Anchor Agent is resin explosive roll; The screw thread of body of rod external end head strip length 200mm; Cover plate is made by 180 ~ 220mm, thickness 6 ~ 10mm square plate, and cover plate central authorities arrange the oblong bolt hole with fixing anchor bar body of rod corresponding size, and cover plate is arranged on outside steel joist; Nut is corresponding with body of rod screw thread, is arranged on outside cover plate, for securing cover plate.
Further improvement of the present invention, connector at the bottom of described wall is processed into " L " shape of every length of side 200mm by 10 ~ 14# channel-section steel of long 400mm, " L " shape every limit channel-section steel waist cross direction at least establishes two oblong bolts hole, connector at the bottom of wall is arranged in steel joist channel-section steel groove, has connected stull and column with bolt.
Further improvement of the present invention, described wall roof connecting is processed by 10 ~ 14# channel-section steel of long 400mm, every 200mm mono-section every limit channel-section steel waist cross direction is provided with two oblong bolts hole, and wall roof connecting is arranged in steel joist channel-section steel groove, has connected column and vault beam with bolt.
Further improvement of the present invention, described wall form is width 200 ~ 400mm steel form, and length is consistent with the center distance of two Pin steel joists; Described vault template is width 50 ~ 100mm steel form, and length is consistent with the center distance of two Pin steel joists.
Arrange the steel joist of dimension during use according to the well lane engineering net section size and shape of concrete support, fixing anchor bar is fixed in wall rock drill-hole through steel joist, is fixed by Anchor Agent.At steel joist outboard cover upper cover plate, fastening nut, steel joist fixedly secures in tunnel, and wall form and vault template are laid on steel joist successively along with building highly to extend, paragraph by paragraph pouring concrete.Remove nut, cover plate, steel joist after concrete setting, be finally again contained on the body of rod by the cover plate unloaded, fastening nut, concrete and fixing anchor bar form concrete anchor rod composite support.
Compared with prior art, advantage is novel, Stability Analysis of Structures is firm, make simple, easy for installation, reusable, save a large amount of timber, multiple horizontal support and vertical support need do not set up in tunnel, not take lane space, concreting operation can be carried out continuously, greatly raises labour productivity; Stull, column and vault beam connect and compose the airtight steel joist of high strength by connector at the bottom of wall and wall roof connecting, have larger rigidity in the plane; Fixing anchor bar is placed in boring bottom and is fixed on country rock by Anchor Agent, and fixing anchor bar outer end by cover plate and fastening nuts steel joist, thus makes steel joist be connected with country rock, forms stereochemical structure, increases space stiffness; After concrete setting, after nut, cover plate, steel joist, wall form and vault template are all removed, the cover plate unloaded is contained on the body of rod again, fastening nut, cover plate is made firmly to compress concrete surface, concrete, anchor pole composition concrete anchor rod composite support, greatly strengthen the intensity of prop; If front, tunnel has an accident in construction, also provide escape way for personnel withdraw.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is well lane engineering concrete support construction erecting device structural representation.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is steel joist connection diagram.
Fig. 4 is fixing anchor bar and model sheetinstallat structural representation.
Fig. 5 is connector schematic diagram at the bottom of wall.
Fig. 6 is wall roof connecting schematic diagram.
In figure: connector, 11-wall roof connecting, the 12-body of rod, 13-boring, 14-Anchor Agent, 15-cover plate, 16-nut, 17-oblong bolt hole at the bottom of 1-country rock, 2-concrete, 3-fixing anchor bar, 4-vault template, 5-wall form, 6-steel joist, 7-stull, 8-column, 9-vault beam, 10-wall.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
As can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, well lane engineering concrete support construction erecting device, comprises wall form 5 and vault template 4, and this erecting device is made up of steel joist 6 and fixing anchor bar 3; The stull 7 of steel joist, column 8 and vault beam 9 are made up of channel-section steel, and stull, column and vault beam connect and compose the airtight steel joist of high strength by connector at the bottom of wall 10 and wall roof connecting 11; Fixing anchor bar is made up of the body of rod 12, cover plate 15 and nut 16; Steel joist is positioned on the body of rod 12 by cover plate and nut, and the body of rod fixedly secures by boring 13 in country rock 1 by Anchor Agent 14; Every Pin steel joist is along needing the tunnel length direction of concreting to install by 700 ~ 1500mm interval; Wall form and vault model sheetinstallat are between two Pin steel joists, and template and channel-section steel web surface are abutted against, and lay successively along with concreting height extends; Remove steel joist after concrete setting, the cover plate unloaded is contained on the body of rod again, fastening nut, and concrete and fixing anchor bar form concrete anchor rod composite support.
As can be seen from Fig. 1, Fig. 3, Fig. 5, Fig. 6, stull 7 is processed by 18 ~ 22# channel-section steel, and during installation, channel-section steel web surface is connected with column bottom facing to country rock 1; Two oblong bolts hole 17 are at least established at stull two ends, for installing connector 10 at the bottom of wall.
As can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, column 8 is processed by 18 ~ 22# channel-section steel, during installation, channel-section steel web surface is facing to country rock 1, channel-section steel web surface is arranged the oblong bolt hole 17 that, diameter corresponding with fixing anchor bar 3 position and body of rod diameter compatible close, the fixing anchor bar body of rod 12 passes channel-section steel bolt hole; Two oblong bolts hole are at least established at column two ends, for installing connector 10 at the bottom of wall and wall roof connecting 11; Column stretches into below roadway floor 200mm.
As can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, vault beam 9 is in the arc-shaped by 18 ~ 22# channel-section steel bending machining; Vault beam channel-section steel web surface is facing to country rock 1, and channel-section steel web surface is arranged the oblong bolt hole that, diameter corresponding with fixing anchor bar 3 position and body of rod diameter compatible close, the fixing anchor bar body of rod 12 passes channel-section steel bolt hole; Two oblong bolts hole 17 are at least established at vault beam two ends, for installing wall roof connecting 11.
Tunnel or chamber crown section are semicircle, three-core arch, ellipse or straight shape, vault beam 9 is processed into corresponding semicircle, three-core arch, ellipse or straight shape, for the semicircle vault of supporting, three heart-shaped vaults, oval vault or straight shape vault tunnel or chamber.(figure does not mark)
As can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, fixing anchor bar 3 at least uses nine on every Pin steel joist 6, the body of rod 12 is that the left-handed nothing of diameter 20 ~ 26mm indulges muscle screw-thread steel, length is longer than drilling depth, concreting thickness and steel joist thickness sum, dovetail is established in body of rod inner end/end, be placed in wall rock drill-hole 13, fixed by Anchor Agent 14, Anchor Agent is resin explosive roll; The screw thread of body of rod external end head strip length 200mm; Cover plate 15 is made by 180 ~ 220mm, thickness 6 ~ 10mm square plate, and cover plate central authorities arrange the oblong bolt hole 17 with body of rod corresponding size, and cover plate is arranged on outside steel joist; Nut 16 is corresponding with body of rod screw thread, is arranged on outside cover plate, for securing cover plate.
As can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, connector 10 at the bottom of wall is processed into " L " shape of every length of side 200mm by 10 ~ 14# channel-section steel of long 400mm, " L " shape every limit channel-section steel waist cross direction at least establishes two oblong bolts hole 17, connector at the bottom of wall is arranged in steel joist 6 channel-section steel groove, has connected stull 7 and column 8 with bolt.
As can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, wall roof connecting 11 is processed by 10 ~ 14# channel-section steel of long 400mm, every 200mm mono-section every limit channel-section steel waist cross direction is provided with two oblong bolts hole 17, wall roof connecting is arranged in steel joist 6 channel-section steel groove, has connected column 8 and vault beam 9 with bolt.
As can be seen from Fig. 1, Fig. 2, Fig. 4, wall form 5 is width 200 ~ 400mm steel form, and length is consistent with the center distance of two Pin steel joists 6; Described vault template 5 is width 50 ~ 100mm steel form, and length is consistent with the center distance of two Pin steel joists.
Arrange the steel joist 6 of dimension during use according to the well lane engineering net section size and shape of concrete support, fixing anchor bar 3 is fixed in boring 13 through steel joist, is fixed by Anchor Agent 14.At steel joist outboard cover upper cover plate 15, fastening nut 16, steel joist fixedly secures in tunnel, and wall form 5 and vault template 6 are fixed on steel joist successively along with building highly to extend, paragraph by paragraph pouring concrete.Remove nut, cover plate, steel joist after concrete setting, be finally again contained on the body of rod by the cover plate unloaded, fastening nut, concrete and fixing anchor bar form concrete anchor rod composite support.
Claims (9)
1. well lane engineering concrete support construction erecting device, is characterized in that comprising wall form (5) and vault template (4), is characterized in that this erecting device is made up of steel joist (6) and fixing anchor bar (3); The stull (7) of described steel joist (6), column (8) and vault beam (9) are made up of channel-section steel, channel-section steel web surface is facing to country rock (1), and stull, column and vault beam connect and compose the airtight steel joist of high strength by connector at the bottom of wall (10) and wall roof connecting (11); Described fixing anchor bar (3) is made up of the body of rod (12), cover plate (15) and nut (16); Described steel joist is positioned on the body of rod by cover plate and nut, and the body of rod fixedly secures by boring (13) in country rock (1) by Anchor Agent (14); Described every Pin steel joist is along needing the tunnel length direction of concreting to install by 700 ~ 1500mm interval; Described wall form and vault model sheetinstallat are between two Pin steel joists, and channel-section steel web surface and template are abutted against, and install successively along with concreting height extends; Remove steel joist after concrete setting, the cover plate unloaded is contained on the body of rod again, fastening nut, and concrete and fixing anchor bar form concrete anchor rod composite support.
2. well lane engineering concrete support construction erecting device according to claim 1, is characterized in that described stull (7) is processed by 18 ~ 22# channel-section steel, and during installation, channel-section steel web surface is facing to country rock (1); Stull two ends at least establish two oblong bolts hole (17) for installing connector at the bottom of wall (10).
3. well lane engineering concrete support construction erecting device according to claim 1, it is characterized in that described column (8) is processed by 18 ~ 22# channel-section steel, channel-section steel web surface is arranged the oblong bolt hole (17) that, diameter corresponding with fixing anchor bar (3) position and body of rod diameter compatible close, the fixing anchor bar body of rod (12) is through channel-section steel bolt hole; Two oblong bolts hole (17) are at least established at column two ends, for installing connector at the bottom of wall (10) and wall roof connecting (11); Column stretches into below roadway floor 200mm.
4. well lane engineering concrete support construction erecting device according to claim 1, is characterized in that described vault beam (9) is in the arc-shaped by 18 ~ 22# channel-section steel bending machining; Vault beam channel-section steel web surface is arranged the oblong bolt hole (17) that, diameter corresponding with fixing anchor bar (3) position and body of rod diameter compatible close, the fixing anchor bar body of rod (12) is through channel-section steel bolt hole; Two oblong bolts hole (17) are at least established at vault beam two ends, for installing wall roof connecting (11).
5. well lane engineering concrete support construction erecting device according to claim 1, it is characterized in that described tunnel or chamber crown section are semicircle, three-core arch, ellipse or straight shape, vault beam (9) is processed into corresponding semicircle, three-core arch, ellipse or straight shape, for the semicircle vault of supporting, three heart-shaped vaults, oval vault or straight shape vault tunnel or chamber.(figure does not mark).
6. well lane engineering concrete support construction erecting device according to claim 1, it is characterized in that described fixing anchor bar (3) at least uses nine on every Pin steel joist (6), the left-handed nothing that the body of rod (12) is diameter 20 ~ 26mm indulges muscle screw-thread steel, length is longer than drilling depth, concreting thickness and steel joist thickness sum, body of rod inner end is placed in wall rock drill-hole (13), fixed by Anchor Agent (14), Anchor Agent is resin explosive roll; The screw thread of body of rod external end head strip length 200mm; Cover plate (15) is made by 180 ~ 220mm, thickness 6 ~ 10mm square plate, and cover plate central authorities arrange the oblong bolt hole (17) with body of rod corresponding size, and cover plate is arranged on outside steel joist; Nut (16) is corresponding with body of rod screw thread, is arranged on outside cover plate, for securing cover plate.
7. well lane engineering concrete support construction erecting device according to claim 1, it is characterized in that connector (10) at the bottom of described wall is processed into " L " shape of every length of side 200mm by 10 ~ 14# channel-section steel of long 400mm, " L " shape every limit channel-section steel waist cross direction at least establishes two oblong bolts hole (17), connector at the bottom of wall is arranged in steel joist (6) channel-section steel groove, has connected stull (7) and column (8) with bolt.
8. well lane engineering concrete support construction erecting device according to claim 1, it is characterized in that described wall roof connecting (11) is processed by 10 ~ 14# channel-section steel of long 400mm, every 200mm mono-section every limit channel-section steel waist cross direction is provided with two oblong bolts hole (17), wall roof connecting is arranged in steel joist (6) channel-section steel groove, has connected column (8) and vault beam (9) with bolt.
9. well lane engineering concrete support construction erecting device according to claim 1, it is characterized in that described wall form (5) is for width 200 ~ 400mm steel form, length is consistent with the center distance of two Pin steel joists (6); Described vault template (5) is width 50 ~ 100mm steel form, and length is consistent with the center distance of two Pin steel joists.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028717.8A CN105422140B (en) | 2015-12-30 | 2015-12-30 | Erecting device is used in the construction of well lane engineering concrete support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028717.8A CN105422140B (en) | 2015-12-30 | 2015-12-30 | Erecting device is used in the construction of well lane engineering concrete support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422140A true CN105422140A (en) | 2016-03-23 |
| CN105422140B CN105422140B (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511028717.8A Active CN105422140B (en) | 2015-12-30 | 2015-12-30 | Erecting device is used in the construction of well lane engineering concrete support |
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| CN (1) | CN105422140B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026067A (en) * | 2018-08-14 | 2018-12-18 | 福建工程学院 | A kind of circumferential intelligent ruggedized construction of shield tunnel and reinforcement means |
| CN110500115A (en) * | 2019-09-04 | 2019-11-26 | 长沙矿山研究院有限责任公司 | A kind of passive Support Method of fragmented rock body tunnel master |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215792A (en) * | 1997-10-25 | 1999-05-05 | 刘照朗 | Sand pressure release double arch semi-enclosed support technology for soft break rock mining roadway |
| JP3562709B2 (en) * | 2000-09-01 | 2004-09-08 | 佐藤工業株式会社 | Refurbishment method of inner wall of tunnel |
| CN101144386A (en) * | 2007-11-01 | 2008-03-19 | 王晓利 | Disposable flexible template device and construction method thereof |
| CN205477656U (en) * | 2015-12-30 | 2016-08-17 | 马钢(集团)控股有限公司 | Shaft sinking and drifting concrete is formwork device for supporting construction |
-
2015
- 2015-12-30 CN CN201511028717.8A patent/CN105422140B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215792A (en) * | 1997-10-25 | 1999-05-05 | 刘照朗 | Sand pressure release double arch semi-enclosed support technology for soft break rock mining roadway |
| JP3562709B2 (en) * | 2000-09-01 | 2004-09-08 | 佐藤工業株式会社 | Refurbishment method of inner wall of tunnel |
| CN101144386A (en) * | 2007-11-01 | 2008-03-19 | 王晓利 | Disposable flexible template device and construction method thereof |
| CN205477656U (en) * | 2015-12-30 | 2016-08-17 | 马钢(集团)控股有限公司 | Shaft sinking and drifting concrete is formwork device for supporting construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026067A (en) * | 2018-08-14 | 2018-12-18 | 福建工程学院 | A kind of circumferential intelligent ruggedized construction of shield tunnel and reinforcement means |
| CN110500115A (en) * | 2019-09-04 | 2019-11-26 | 长沙矿山研究院有限责任公司 | A kind of passive Support Method of fragmented rock body tunnel master |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422140B (en) | 2019-03-05 |
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