CN203393687U - Prestressed concrete lined tunnel structure and circular ring-shaped flat jack thereof - Google Patents
Prestressed concrete lined tunnel structure and circular ring-shaped flat jack thereof Download PDFInfo
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- CN203393687U CN203393687U CN201320372074.9U CN201320372074U CN203393687U CN 203393687 U CN203393687 U CN 203393687U CN 201320372074 U CN201320372074 U CN 201320372074U CN 203393687 U CN203393687 U CN 203393687U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a circular ring-shaped flat jack which is applied to a prestressed concrete tunnel and is provided with a circular ring-shaped body. The circular ring-shaped body is provided with a cavity into which a pressure applying medium can be injected; the circular ring-shaped body is a hollow circular ring-shaped pressure device capable of radially applying uniformly distributed pressure stress to the outside of lined concrete along a circular ring by the pressure applying medium through limited radial displacement. The circular ring-shaped flat jack adopted by the utility model omits use of prestressing steel in the prior art and is convenient to construct; moreover, the prestress degree is improved and a concrete lined layer has no tensile stress phenomenon, so that longitudinal cracks and the internal water seepage phenomenon are prevented.
Description
Technical field
The utility model relates to a kind of novel prestressed concrete lining cutting heavy-duty pressure tunnel structure and annular flat jack thereof.
Background technology
In hydraulic power project and water delivery engineering, intake tunnel is generally pressurized tunnel, and it is circular that its section mostly is, because suffered primary load is even internal water pressure, its stress condition is better.Because barrel is to excavate and form, and just destroy the original equilibrium state of rock mass after excavation in rock mass, cause rock mass may produce distortion and avalanche, and barrel also will bear the effects such as interior external water pressure and pressure from surrounding rock.Therefore, existing barrel generally will arrange prestressed concrete lining cutting permanent, that have sufficient intensity and anti-permeability performance to guarantee safety.
Existing prestressed concrete lined tunnel is generally along lining cutting layer, to set up the ring orientation prestress steel that hundreds of ton is even larger to apply prestressing force.The clean internal diameter 9.5m of China's Geheyan Project for example, the clean internal diameter 9.6m of Tianshengqiao-I etc., are in lining cutting layer pre-buried bellows, reeve, stretch-draw, grouting etc. have bonding steel strand lined tunnel.And at Xiao Langdi, its sand discharge tunnel, clean internal diameter 6.5m, has adopted a kind of non-bending steel cable, does not need reserving hole channel during construction, its winding angle reaches 720 °, before concreting, the same with plain bars, according to designing requirement, be laid in template, then fluid concrete carries out stretch-draw, anchoring, shutoff end after concrete reaches some strength.Because it does not need grouting, thereby simplified construction technology.Nonetheless, still there are some doubts to ground tackle and the whole durability that is without bond-anchorage in engineering staff.And no matter be to have bonding steel strand lined tunnel; or non-bending steel cable lined tunnel; all need a large amount of steel strand to use as supporting; but be subject to the restriction of prior art, the consumption of steel strand is restricted, so its prestressing force is also further restricted; thereby make to resist the scarce capacity of longitudinal crack in tunnel; reduced the durability of total, and it also needs to be provided with non-prestressed steel strand conventionally, thereby further increased the cost of building.
Utility model content
In order to solve the existing problem of above-mentioned prior art, inventor sums up prestressed concrete lined tunnel engineering in the past, seek better prestressing technique, proposed novel prefabricated concrete lined tunnel structure, annular flat jack and heavy-duty pressure tunnel construction technology.
Design of the present utility model is, consider that prestressed concrete lined tunnel is different with other prestressed reinforced concrete constructions, because barrel is to excavate and form in rock mass, thereby can give full play to the effect of country rock, and by means of country rock, transmit prestressed counter-force, adopt additional electrothermal prestressing, can be without prestressing steel, during construction, only need between lining concrete and country rock, reserve double standard seam, and settle annular flat jack in the middle of double standard seam.Utilize like this annular flat jack along tunnel concrete liner layer outside, to apply even external pressure to replace having bonding or un-bonded prestressed steel strand to apply prestressing force.
And a kind of annular flat jack that the key equipment of realizing this imagination is the utility model to be provided, it is a hollow circular ring shape pressure bladder made from steel sheet.Can utilize hydraulic pressure, by limited radial displacement, tunnel concrete liner layer outside applied to uniform compressive stress.
An object of the present utility model is in order to save the use of prestressing steel of the prior art, thereby reduces operating cost.
Another object of the present utility model is the compressive stress that increases lining cutting, makes its resistance to tension strengthen the durability that improves whole tunnel.
In order to achieve the above object, the utility model provides a kind of annular flat jack, is applied to prestressed concrete tunnel, its tool one annular body, and this annular body is provided with the cavity that can inject the medium of exerting pressure; This this physical efficiency of annular radially to lining concrete outside applies the hollow circular ring shape pressure apparatus of uniform compressive stress by limited radial displacement along annulus by the medium of exerting pressure.
Wherein, be rectangle in the middle of the ring body cross section of this annular flat jack, this body has ring and two sides in an outer shroud,, and described outer shroud, interior ring are outside to be applied to the position of uniform compressive stress.
Wherein, the two ends of contiguous two sides of this interior ring are respectively arranged with elastic deformation portion, preferably, can separately have a clinch, this elastic deformation portion is connected by joint welding with side, clinch length is preferably 5mm, and weld together, and this overlapping part is in the top of side.
In order to achieve the above object, the utility model also provides a kind of prestressed concrete lined tunnel structure, and it comprises: several annular flat jacks, and longitudinal equably against the country rock inwall that is distributed in tunnel along tunnel center line; Concrete lining course; Wherein, annular flat jack is between country rock and concrete lining course.
Wherein, also comprise several cement mortar bedding cushions, be arranged between described annular flat jack and this Wall Rock of Tunnel inwall.
Bed course is preferably and the same width of annular flat jack.
Wherein, between described each concrete lining section, hoop shrinkage joint is set, in this hoop shrinkage joint, sealing elastic body is set, described sealing elastic body is that circular ring Qie Qi cross section is rectangle, and the inner sealing chamber that is provided with hollow, and described sealing elastic body inwall and concrete lining course inwall are at same plane.
Wherein, the elastomeric material of described sealing is neoprene, and this sealing chamber is more than 2 or 2 and is not communicated with mutually.
Wherein, filling concrete slurry in described sealing chamber.Preferably, described sealing chamber is radially arrangement, and is preferably circle or rectangle.
In order to achieve the above object, the utility model can be applicable to a kind of heavy-duty pressure tunnel construction technology, and its step comprises: A, along tunnel center line, several annular flat jacks are longitudinally installed, and the rock surface coating release agent between each annular flat jack; B, fluid concrete lining cutting layer; C, apply prestressing force: press water mud is pressed in this annular flat jack, and increases gradually grouting pressure and reach design pressure, maintain design pressure, seal all slurry outlets.
Wherein, before above-mentioned A step, by cement mortar, along tunnel inwall, do the cement mortar bedding cushion with the same width of described annular flat jack, then, described annular flat jack is installed on described bed course.
Wherein, for preventing that tunnel is subject to thermal stresses to produce longitudinal crack, in above-mentioned C step, first injects in this annular flat jack and exerts pressure with aqueous medium.
Wherein, for eliminating the loss of prestress producing because of country rock plastic strain and creep of concrete distortion, when the pressure of aqueous medium in this annular flat jack reaches after design pressure, continue pressurization make hydraulic pressure finally reach 1.5 times of design pressure above after, then cement paste is pressed in this annular flat jack and replaces aqueous medium.
Wherein, several hoops shrinkage joint is set on this concrete lining course, in this hoop shrinkage joint, settles and there is constrictive sealing elastic body.
Wherein, after carrying out C step, the space with between concrete lining course described in grout filling and country rock, makes it to combine closely, to improve power transmission condition and to reduce seepage.
Wherein, after carrying out above-mentioned steps, can carry out consolidation grouting.
Useful technique effect of the present utility model is, by said structure:
1, can give full play to country rock effect of elastic resistance, adopt additional electrothermal prestressing, annular flat jack of the present utility model applies prestressing force, saved the use of prestressing steel of the prior art,, there is not the corrosion problem of ground tackle, steel in easy construction, more safe and reliable.
2, because concrete crushing strength is higher, thereby can suitably improve degree of prestressing, apply larger prestressing force, thereby guaranteed under service condition, concrete lining course 3 there will not be tensile stress, thereby prevent the appearance of longitudinal crack, also just can not ftracture, and then reduce the generation of interior water exosmose.
3, the sealing elastic body adopting between concrete lining course in the utility model, has further strengthened the performance of watertightness of tunnel.
Accompanying drawing explanation
Fig. 1 is the stress state figure of the utility model thick cyclinder while bearing internal water pressure.
Fig. 2 is the stress state figure of the utility model thick cyclinder while bearing external water pressure.
Fig. 3 A is the longitudinal sectional view of the utility model annular flat jack while being installed on tunnel.
Fig. 3 B is the schematic diagram after the utility model fluid concrete lining cutting layer.
Fig. 3 C is that the inner filling concrete slurry of the utility model annular flat jack applies the schematic diagram after prestressing force.
Fig. 3 D the utility model has been installed the elastomeric schematic diagram of sealing.
Fig. 3 E is the structural representation after the utility model backfill consolidation grouting.
Fig. 4 is the elastomeric sectional schematic diagram of the utility model neoprene sealing.
Fig. 5 is the longitudinal sectional drawing of the annular flat jack that consists of multi-section circular arc of the utility model.
Fig. 5 A is the A-A axial view of the annular flat jack that consists of several standard round segmental arcs of the utility model
Fig. 5 B is the sectional drawing of B-B in this Fig. 5.
Fig. 6 is the connection diagram between each standard round segmental arc of the utility model.
[critical element symbol description]
1. tunnel 101. tunnel center lines
102 tunnel inwalls
2. mortar levelling layer 3. concrete lining course
301. concrete lining course inwall 4. press water mud
5. sealing elastic body 501. sealing elastic body inwalls
6. 7. sealing chambeies, backfill grouting district
701. first 702. second sealing chambeies, sealing chambeies
8. annular flat jack 801. elastic deformation portions
The interior ring of 802. outer shroud 803.
804. side 805. cavitys.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of novel pre-stressed tunnel concrete liner structure of the present utility model, annular flat jack and heavy-duty pressure tunnel construction technology is described in further details.
As shown in Fig. 5, Fig. 5 A, Fig. 5 B and Fig. 6, for the annular flat jack 8 for prestressed concrete lined tunnel structure described in the utility model, wherein, Fig. 5 A is longitudinal view of the annular flat jack of the utility model one specific embodiment, in the present embodiment, it is to make annular flat jack by steel plate, and the body of this annular flat jack 8 is provided with an outer shroud 802; In one, encircle 803; And 804, two sides of two sides 804 form a cavity 805 with outer shroud 802 and interior ring 803.By Fig. 5 B, can be found out, its tool one annular body, the cross section of this annular flat jack body is more flat rectangle, and this body interior has the cavity that can inject the medium of exerting pressure, in the present embodiment, the medium of exerting pressure is water or cement paste, and this interior ring or outer shroud can be by the pressure energy of the medium of exerting pressure along annulus radial deformation with the outside application of force, main purpose of the present utility model is, make this interior ring apply prestressing force to tunnel concrete liner layer, can outwards to rock, apply the reaction force contrary with this prestressing force by outer shroud simultaneously, thereby realize and provide reaction force by rock.As shown in the figure, this body has an outer shroud, ring and two sides in one, because interior ring and outer shroud are the force surfaces of annular flat jack of the present utility model, and preferably, in order to make to put on the strength better effects if on concrete lining course, at the interior ring-side wall of this annular flat jack 8 two ends, be provided with the 801(of elastic deformation portion as shown in Figure 5 B), in the present embodiment, this elastic deformation portion 801 is the semicircles that are set to two elastically deformables, it between semi arch, is a plane, this elastic deformation portion 801 mutually overlaps 5mm and welds together with side 804.When the inner injected water of this annular flat jack 8 or cement paste, this elastic deformation portion 801 will be stretched equal with this annular flat jack inside wall (as Fig. 3 C), thereby while making annular flat jack 8 be subject to inner test medium crimp, make its stress distribution more meet demand of the present utility model.
In an embodiment, be to may be embodied as a complete ring body.But, because the diameter of common tunnel is very big, obviously inconvenience of its integral manufacturing and transportation, therefore, as shown in the figure, for the ease of processing and transportation, preferably, annular flat jack can be comprised of several standard round segmental arcs, and be respectively provided with two jointings in each arc section two ends, and the termination of arc section is fixed in one end of each jointing, and the other end is provided with screw thread, to can be threaded connection by steel pipe between adjacent arc section, and can be provided with in a steel pipe tube connector of injected water or cement paste.
When annular flat jack of the present utility model is applied to prestressed concrete lined tunnel, prestressed concrete lined tunnel structure described in the utility model includes: several annular flat jacks 8, are longitudinally evenly distributed on the inwall of tunnel 1 along tunnel.
Because the more coarse planeness of tunnel inwall is not good enough, preferably, several mortar levelling layers 2 are set between annular flat jack 8 and tunnel inwall 102, these mortar levelling layer 2 width equal the width of annular flat jack 8.
Hoop crack in order to prevent concrete shrinkage or to produce due to variations in temperature preferably, arranges hoop shrinkage joint on concrete lining course 3, in this hoop shrinkage joint, sealing elastic body 5 is set, the making material of this sealing elastic body 5, preferably, selects neoprene.Thereby for make this sealing elastic body 5 have certain pressure make between itself and concrete lining course 3 against tightr, can be provided with one or multi-channel sealing chamber 7 in these sealing elastic body 5 inside, and each sealing chamber 7 Jun Hubu UNICOM, inside is stuffing pressure cement paste as required, in the present embodiment, take that two sealing chambeies 7 are set is example, the first filling water mud in sealing chamber of close country rock one side is as the second sealing chamber 702, behind the sealing chamber of inner side, close hole, filling water mud is as the first sealing chamber 701, after filling concrete slurry between elastic body and layer of concrete against tightr.
The construction technology of above-mentioned prestressed concrete lined tunnel structure comprises following steps:
A, mounting circular ring shape flat jack 8: along tunnel center line 101, longitudinally by desired spacing, several annular flat jacks 8 are installed.Because the planeness of tunnel inwall is not good enough, in order to ensure the reaction force of sufficient intensity, pass to country rock, preferably before mounting circular ring shape flat jack 8, first by cement mortar, along tunnel inwall, do the bed course with annular flat jack 8 same width, thereby levelling is also adjusted the circularity of tunnel inwall, make annular flat jack 8 and tunnel inwall against tightr.
B, fluid concrete lining cutting layer 3: before installation form, first carefully check whether the profile installation of each annular flat jack is firm, concrete pouring type Bu Yingshiqi position changes, then fluid concrete in template.In template, the concrete of cast must be used closely knit, high-performance quality concrete, to bear huge internal water pressure and seepage.Therefore, concrete grating and construction technology are all needed to carry out strict careful quality control and check.In order to prevent concrete and abrasive rock bonding, preferably, before installation form, the abrasive rock Excavation brushing one deck release agent between Jiang Ge road annular flat jack 8 first.
C, apply prestressing force: after the form removal of concrete lining course, preferably, first with aqueous medium, inject the design pressure that applies certain value in annular flat jack 8, in case tunnel is subject to thermal stresses to produce longitudinal crack; After lining concrete reaches design strength, strengthen gradually water pressure and reach 1.5 times more than design pressure; Finally again cement paste is sent into the interior replacement aqueous medium of annular flat jack 8, and increased gradually grouting pressure and reach design pressure, maintain design pressure, seal all slurry outlets until cement paste solidifies.This step utilizes the interior hydraulic pressure of this annular flat jack 8, by limited hoop displacement, tunnel concrete liner layer 3 outside are applied to uniform compressive stress.As described in Fig. 1-Fig. 2, the stress state while bearing inside and outside evenly distributed load for Elasticity thick cyclinder.
During internal water pressure:
During external water pressure:
Under internal water pressure effect, circumference stress is always tensile stress, and maximum value is at inner surface; Under effect of water pressure, circumference stress perseverance is compressive stress, and maximum value is also at inner surface outside.When if thick cyclinder bears identical inside and outside evenly distributed load simultaneously, can see that circumference stress is still compressive stress in such cases.Therefore the utility model annular flat jack 8 that has thick cyclinder shape is after interior injected water mud, stress when operation in concrete lining course should be compressive stress, and because concrete crushing strength is higher, thereby, can apply very large compressive stress, can under service condition, still have enough compressive pre-stresses in lining cutting layer like this, thereby can avoid concrete lining course 3 to occur tensile stress.Simultaneously, this step can also be eliminated the loss of prestress causing because of the plastic strain of country rock and creep of concrete, thereby further increased the prestressing force of lining cutting layer, effectively improved the ability of tunnel resisting longitudinal crackle, thereby strengthened the durability that total is used.And by regulating the width of annular flat jack 8 and spacing and internal pressure size to change additional prestressed size.
D, sealing elastic body is set: when tunnel may produce larger relative deformation through the intersections such as tomography, weak broken band and vertical shaft or other, easily produce lateral deformation seam; And concrete is because drying shrinkage and variations in temperature easily produce hoop crack, therefore, conventionally along tunnel axis, transverse expansion joint will be set, permeable to prevent tunnel.The utility model preferably, to settle and there is constrictive sealing elastic body 5 between every two concrete lining sections 3, as shown in Figure 4, sealing elastic body 5 in the present embodiment is made for chloroprene rubber material, and in this sealing elastic body 5, be provided with the mutual disconnected sealing of multiple tracks chamber 7 structures, preferably, be circle or the rectangle sealing chamber 7 of twice Hu Bu UNICOM, by filling water mud Shi Qiyu left and right sides concrete lining course in sealing chamber 73, compress and reach sealing object.The first filling water mud in sealing chamber 7 of close country rock one side is as the second sealing chamber 702, and behind the sealing chamber of inner side, close hole, filling water mud is as the first sealing chamber 701.Because temperature in tunnel is more constant, and be not subject to ultraviolet radiation, this provides the advantage of durability to sealing material.
E, backfill grouting: the space with between grout filling concrete lining course 3 and country rock, makes it to combine closely, to improve power transmission condition and to reduce seepage.
F, consolidation grouting: its objective is the globality of reinforcing and improving country rock, reduce pressure from surrounding rock, guarantee the elastic resistance of country rock, reduce underground water to the pressure of lining concrete and infiltration.Whether to carry out consolidation grouting, should determine according to concrete engineering condition.
In sum, the major advantage of this new structure is:
1, give full play to country rock effect of elastic resistance, adopt additional electrothermal prestressing, annular flat jack of the present utility model applies prestressing force, saved the use of prestressing steel in prior art,, there is not the corrosion problem of ground tackle, steel in easy construction, more safe and reliable.
2, consider that concrete crushing strength is higher, thereby can suitably improve degree of prestressing, apply larger prestressing force, thereby guaranteed under service condition, concrete lining course there will not be tensile stress, thereby prevent the appearance of longitudinal crack, also just can not ftracture, and then reduce the generation of interior water exosmose.
3, the sealing elastic body adopting between concrete lining course in the utility model, has further strengthened the performance of watertightness of tunnel.
Claims (8)
1. an annular flat jack, is applied to prestressed concrete tunnel, it is characterized in that, and its tool one annular body, this annular body is provided with the cavity that can inject the medium of exerting pressure; This annular body is for radially applying the hollow circular ring shape pressure apparatus of uniform compressive stress by limited radial displacement along annulus by the medium of exerting pressure to lining concrete outside.
2. annular flat jack as claimed in claim 1, it is characterized in that, the ring body cross section of this annular flat jack is rectangle, and this body has ring and two sides in an outer shroud, one, and described outer shroud, interior ring are for applying the butting section of uniform compressive stress to outside.
3. annular flat jack as claimed in claim 2, is characterized in that, the two ends of contiguous two sides of this interior ring are respectively arranged with elastic deformation portion.
4. a prestressed concrete lined tunnel structure, is characterized in that, it comprises:
Several annular flat jacks, longitudinal equably against the country rock inwall that is distributed in tunnel along tunnel center line;
Concrete lining course;
Wherein, annular flat jack is between country rock and concrete lining course.
5. a kind of prestressed concrete lined tunnel structure as claimed in claim 4, is characterized in that, also comprises several cement mortar bedding cushions, is arranged between described annular flat jack and this Wall Rock of Tunnel inwall.
6. a kind of prestressed concrete lined tunnel structure as claimed in claim 4, it is characterized in that, on described concrete lining course, be also provided with hoop shrinkage joint, in described hoop shrinkage joint, sealing elastic body is set, described sealing elastic body is that circulus Qie Qi cross section is rectangle, and the inner sealing chamber that is provided with hollow, and described sealing elastic body inwall and concrete lining course inwall be at same plane, and described sealing is filled with cement paste in chamber.
7. a kind of prestressed concrete lined tunnel structure as claimed in claim 6, is characterized in that, the elastomeric material of described sealing is neoprene, and this sealing chamber is more than 2 or 2 and is not communicated with mutually.
8. a kind of prestressed concrete lined tunnel structure as claimed in claim 7, is characterized in that, described sealing chamber is for radially arranging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372074.9U CN203393687U (en) | 2013-06-26 | 2013-06-26 | Prestressed concrete lined tunnel structure and circular ring-shaped flat jack thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372074.9U CN203393687U (en) | 2013-06-26 | 2013-06-26 | Prestressed concrete lined tunnel structure and circular ring-shaped flat jack thereof |
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| Publication Number | Publication Date |
|---|---|
| CN203393687U true CN203393687U (en) | 2014-01-15 |
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| CN201320372074.9U Expired - Fee Related CN203393687U (en) | 2013-06-26 | 2013-06-26 | Prestressed concrete lined tunnel structure and circular ring-shaped flat jack thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696406A (en) * | 2013-06-26 | 2014-04-02 | 中国水利水电科学研究院 | Concrete-lined tunnel structure, circular flat jacks and high-pressure tunnel technology |
| CN109404008A (en) * | 2018-11-28 | 2019-03-01 | 中国水利水电科学研究院 | Intelligent prestressed concrete liner tunnel |
| CN110243526A (en) * | 2019-07-03 | 2019-09-17 | 东北大学 | A method of it is measured based on flat jack and determines Three-dimensional Rock initial field stress |
| CN111810191A (en) * | 2020-08-20 | 2020-10-23 | 华侨大学 | Prestressed anchor cable structure for tunnel seepage prevention and construction method thereof |
-
2013
- 2013-06-26 CN CN201320372074.9U patent/CN203393687U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696406A (en) * | 2013-06-26 | 2014-04-02 | 中国水利水电科学研究院 | Concrete-lined tunnel structure, circular flat jacks and high-pressure tunnel technology |
| CN103696406B (en) * | 2013-06-26 | 2015-10-14 | 中国水利水电科学研究院 | Concrete-lined tunnel structure, annular flat jack and heavy-duty pressure tunnel technique |
| CN109404008A (en) * | 2018-11-28 | 2019-03-01 | 中国水利水电科学研究院 | Intelligent prestressed concrete liner tunnel |
| CN110243526A (en) * | 2019-07-03 | 2019-09-17 | 东北大学 | A method of it is measured based on flat jack and determines Three-dimensional Rock initial field stress |
| CN110243526B (en) * | 2019-07-03 | 2020-11-10 | 东北大学 | Method for determining three-dimensional initial ground stress of rock mass based on flat jack measurement |
| CN111810191A (en) * | 2020-08-20 | 2020-10-23 | 华侨大学 | Prestressed anchor cable structure for tunnel seepage prevention and construction method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20170626 |