CN107060837B - A kind of Shallow-buried asymmetry formula shield arch construction method - Google Patents
A kind of Shallow-buried asymmetry formula shield arch construction method Download PDFInfo
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- CN107060837B CN107060837B CN201710179482.5A CN201710179482A CN107060837B CN 107060837 B CN107060837 B CN 107060837B CN 201710179482 A CN201710179482 A CN 201710179482A CN 107060837 B CN107060837 B CN 107060837B
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000013461 design Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Classifications
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of Shallow-buried asymmetry formulas to protect arch construction method, including the gutter construction that intercepts water, asymmetric formula shield arch foundation construction, asymmetric formula shield arch construction and the backfill of hole top.Construction method of the invention is simple, and constructing, each step linking is close, and umbrella arch and arrangement of pile foundation position, structure and size design are reasonable；There is convenient, the rapid advantage of speed of application of constructing using construction method of the present invention construction；Anti- biasing effect of the invention is good, effectively can give railway operation safe bring risk by less Tunnels in Shallow Buried bias.
Description
Technical field
The present invention relates to Tunnel Engineering shallow embedding excavation technology fields, it particularly relates to a kind of Shallow-buried asymmetry formula
Shield arch construction method.
Background technique
There are the forms that open cut is secretly done for Tunnels in Shallow Buried excavation (buried depth is shallower) currently on the market, but construction method is inadaptable inclined
Location is pressed, this product is unable to reach transverse pressure caused by reducing massif bias, and tunnel is easily served as a contrast because lateral pressure acts on
Cracking and lining cutting integrally bias are built, tunnel-liner during operation is caused to occupy headroom.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes a kind of Shallow-buried asymmetry formula shield arch construction party
Method can overcome the above-mentioned deficiency of the prior art.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
A kind of Shallow-buried asymmetry formula shield arch construction method, wherein the both ends of asymmetric formula shield arch are apart from elevation of water
It is inconsistent, include the following steps:
S1: the gutter that intercepts water is performed other than 5 meters of tunnel slope excavation line, and the water flow to intercept water in gutter is led into Natural Water
Ditch；
S2: asymmetric formula shield arch foundation construction is carried out, is specifically included:
S2.1: reserved top bar Core Soil divides layback slot tunneling shield skewback plinth to shield arch height of foundation；
S2.2: side slope carries out brush slope according to on-site actual situations, by slope ratio, and shield arch foundation width, which meets, at guarantee slope foot sets
Meter requires, and side slope linked network carries out spray anchor gib；
S3: asymmetric formula shield arch construction specifically includes:
S3.1: the shield in high versant shield arch abutment portion encircles foundation construction, and shield arch foundation main reinforcement uses 25 spiral of φ, reinforcing rib
Using 16 spiral of φ, bar spacing 25cm；
S3.2: the shield in low versant shield arch abutment portion encircles foundation construction, and shield arch foundation main reinforcement uses 25 spiral of φ, reinforcing rib
Using 16 spiral of φ, bar spacing 25cm；
S3.3: shield arch construction is carried out, and shield arch is supported after the completion of shield arch construction；
S4: the backfill of hole top refers specifically to: after protecting arch concrete strength and reaching the 70% of design value, being carried out using gravelly soil
It is real that packing is rammed in layering.
Further, in step S2.2, spraying the anchor pole used in anchor gib is 22 grouting rock bolt of φ, and the anchor pole is long
Degree is 5m, and the spacing between adjacent anchor pole is 1.5 × 1.5 meters, and anchor pole is in quincuncial arrangement, and the length of anchor pole leakage is
70cm.Further, in step S2.2, side slope linked network is paved with using 6 steel mesh of φ, grid spacing 20cm × 20cm, injection
Concrete is 10cm thickness C25 in-network processing.
Further, in step S3.1, high versant shield skewback plinth is reinforced using 3 32 grouting rock bolt slip castings of φ, encircles with shield
It pours together；And the length of 32 grouting rock bolt of φ is 8.0m, 50cm is reserved in end.
Further, in step S3.2, low versant shield skewback plinth uses C35 steel bar concrete pile plinth, mixed to pile foundation
When solidifying soil intensity reaches 85% or more, pile crown is abolished, guarantees that pile foundation reinforcing bar deeply protects skewback plinth 80cm, pile foundation deeply protects skewback plinth
10cm。
Preferably, the stake diameter of the C35 steel bar concrete pile plinth is 1 meter, and stake is 15 meters long, 3 meters of longitudinal stake spacing.
Further, in step S3.3, shield arch uses 80cm thickness C35 armored concrete, and shield arch main reinforcement uses 25 screw thread of φ
Reinforcing bar, the spacing of 25 spiral of φ are 20cm；Longitudinal rib uses 16 spiral of φ, and the spacing of 16 spiral of φ is
8 round steel of 25cm, reinforcing rib φ, the spacing of 8 round steel of φ are 25cm.
Preferably, shield arch uses I20 type I-shaped bracing members, and the spacing of the I20 type I-steel is 60cm.
Further, in step S4, layering is rammed packing implementation work and is symmetrically carried out, and ensures that overburden cover is less than
In 3m.
Preferably, the compactness that packing implementation work is rammed in layering is more than or equal to 0.8, and the partial size of rubble used is less than or equal to
15cm。
Beneficial effects of the present invention: construction method of the invention is simple, and each step linking of constructing is close, umbrella arch and stake
Base fabric seated position, structure and size design are reasonable；Have construction convenient using construction method of the present invention construction, speed of application is rapid
The advantages of；Anti- biasing effect of the invention is good, effectively can give railway operation safe bring wind by less Tunnels in Shallow Buried bias
Danger.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the Shallow-buried asymmetry shield arch described according to embodiments of the present invention；
Fig. 2 is the arrangement of reinforcement schematic diagram described according to embodiments of the present invention；
In figure: 1, tunnel；2, shield arch；3, high versant protects arch abutment portion；4, low versant protects arch abutment portion；5,32 grouting rock bolt of φ；
6,25 spiral of φ；7,16 spiral of φ；8,8 round steel of φ.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
As shown in Figs. 1-2, a kind of Shallow-buried asymmetry formula shield arch construction method, wherein the both ends of asymmetric formula shield arch away from
It is inconsistent from elevation of water to include the following steps:
S1: the gutter that intercepts water is performed other than 5 meters of 1 slope excavating line in tunnel, and the water flow to intercept water in gutter is led into nature
Ditch, the excavated section in the tunnel 1 are 114m2~140m2；
S2: asymmetric formula shield arch foundation construction is carried out, is specifically included:
S2.1: reserved top bar Core Soil divides layback slot tunneling shield skewback plinth to shield arch height of foundation；
S2.2: side slope carries out brush slope according to on-site actual situations, by slope ratio, and shield arch foundation width, which meets, at guarantee slope foot sets
Meter requires, and side slope linked network carries out spray anchor gib；
S3: asymmetric 2 construction of formula shield arch specifically includes:
S3.1: the shield in high versant shield arch abutment portion 3 encircles foundation construction, and shield arch foundation main reinforcement uses 25 spiral of φ, reinforces
Muscle uses 16 spiral of φ, bar spacing 25cm；
S3.2: the shield in low versant shield arch abutment portion 4 encircles foundation construction, and shield arch foundation main reinforcement uses 25 spiral of φ, reinforces
Muscle uses 16 spiral of φ, bar spacing 25cm；
S3.3: 2 construction of shield arch is carried out, and shield arch is supported after the completion of shield arch construction；
S4: the backfill of hole top refers specifically to: after protecting arch concrete strength and reaching the 70% of design value, being carried out using gravelly soil
It is real that packing is rammed in layering.
In one embodiment, in step S2.2, spraying the anchor pole used in anchor gib is 22 grouting rock bolt of φ, institute
Stating 22 grouting rock bolt length of φ is 5m, and the spacing between adjacent 22 grouting rock bolt of φ is 1.5 × 1.5 meters, and 22 grouting rock bolt of φ
In quincuncial arrangement, the length of 22 grouting rock bolt of φ leakage is 70cm.
In one embodiment, in step S2.2, side slope linked network is paved with using 6 steel mesh of φ, and grid spacing 20cm ×
20cm, the concrete of injection are 10cm thickness C25 in-network processings.
In one embodiment, in step S3.1, high versant shield skewback plinth is added using 3 32 grouting rock bolt of φ, 5 slip castings
By force, it is poured together with shield arch；And the length of 32 grouting rock bolt 5 of φ is 8.0m, 50cm is reserved in end.
In one embodiment, in step S3.2, low versant shield skewback plinth uses C35 steel bar concrete pile plinth, to
When pile foundation concrete strength reaches 85% or more, pile crown is abolished, guarantees that pile foundation reinforcing bar deeply protects skewback plinth 80cm, pile foundation is deep
Protect skewback plinth 10cm；The stake diameter of the C35 steel bar concrete pile plinth is 1 meter, and stake is 15 meters long, 3 meters of longitudinal stake spacing.
In one embodiment, in step S3.3, shield arch uses 80cm thickness C35 armored concrete, and shield arch main reinforcement uses
25 spiral 6 of φ, the spacing of 25 spiral 6 of φ are 20cm；Longitudinal rib uses 16 spiral 7 of φ, 16 spiral 7 of φ
Spacing be 25cm；Reinforcing rib is 8 round steel 8 of φ, and the spacing of 8 round steel 8 of φ is 25cm；The shield arch uses I20 type I-steel
Support, the spacing of the I20 type I-steel are 60cm.
In one embodiment, in step S4, layering is rammed packing implementation work and is symmetrically carried out, and ensures to cover thickness
Degree is less than or equal to 3m, and the compactness that packing implementation work is rammed in layering is more than or equal to 0.8, and the partial size of rubble used is less than or equal to 15cm.
In order to facilitate understanding above-mentioned technical proposal of the invention, below by way of in specifically used mode to of the invention above-mentioned
Technical solution is described in detail.
When specifically used, Shallow-buried asymmetry formula shield arch construction method of the present invention is always divided into 4 steps, including cuts
The construction of water gutter, asymmetric formula shield arch foundation construction, asymmetric formula shield arch construction and the backfill of hole top.
Wherein, the gutter construction that intercepts water, which refers to, performs the gutter that intercepts water in addition to 5 meters of tunnel slope excavation line, and leads to certainly
Right ditch guarantees that rainwater does not flow into shield arch section, and the excavated section in the tunnel 1 is 114m2~140m2。
The asymmetry formula shield arch foundation construction includes: to reserve top bar Core Soil to umbrella arch foundation excavation, divide side
Kerve is excavated to shield arch height of foundation, and side slope carries out brush slope according to on-site actual situations, by slope ratio, guarantees to protect skewback plinth at slope foot
Width meets design requirement, and side slope linked network carries out spray anchor gib, and the anchor pole of spray anchor gib uses 22 mortar of φ
Anchor pole, length 5m are in quincuncial arrangement 1.5 × 1.5 meters of spacing between adjacent anchor pole, and anchor pole leaks outside 70cm, to protect arch
It is integral with massif anchoring, to prevent displacement；Side slope linked network is paved with using 6 steel mesh of φ, grid spacing 20cm × 20cm, and injection is mixed
Solidifying soil uses 10cm thickness C25 in-network processing.
The asymmetry formula shield arch construction includes: after being excavated to design height, and high versant shield skewback plinth is using 3 with 32 sand of φ
It starches bolt grouting to reinforce, 50cm is reserved in length 8.0m, end, pours together with shield arch, enhances stability；Low versant shield arch by
In being in coombe location, basic mud is deeper, and using C35 steel bar concrete pile plinth, 1 meter of stake diameter, stake is 15 meters long, between longitudinal stake
Away from 3 meters, when pile foundation concrete strength reaches 85% or more, pile crown is abolished, guarantees that pile foundation reinforcing bar deeply protects skewback plinth 80cm,
Pile foundation deeply protects skewback plinth 10cm, and shield skewback plinth uses C35 armored concrete, thick 80cm, wide 2.5m, and shield arch foundation main reinforcement uses
25 spiral of φ, reinforcing rib use 16 spiral of φ, bar spacing 25cm；Shield arch constructs and carries out supporting, and shield arch is adopted
With 80cm thickness C35 armored concrete, shield arch main reinforcement uses 25 spiral of φ, spacing 20cm；Longitudinal rib uses 16 screw-thread steel of φ
Muscle, bar spacing 25cm；8 round steel of reinforcing rib φ, spacing 25cm, shield arch brace use I20 type I-steel, spacing 60cm.
Hole top backfill refers to: after protecting arch concrete strength and reaching the 70% of design value, vault is using gravelly soil point
Layer rams packing reality, and compactness is more than or equal to 0.8, and ballast grain sizes used are less than or equal to 15cm, and must not contain expansive clay, return
Filling out construction should symmetrically carry out, compaction in layers, and ensure overburden cover no more than 3m.
In conclusion construction method of the invention is simple, each step linking of constructing is close, umbrella arch and arrangement of pile foundation position
Set, structure and size design it is reasonable；There is convenient, the rapid advantage of speed of application of constructing using construction method of the present invention construction；
Anti- biasing effect of the invention is good, effectively can give railway operation safe bring risk by less Tunnels in Shallow Buried bias.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of Shallow-buried asymmetry formula shield arch construction method, wherein the both ends of asymmetric formula shield arch apart from elevation of water not
Unanimously, which comprises the steps of:
S1: the gutter that intercepts water is performed other than 5 meters of tunnel slope excavation line, and the water flow to intercept water in gutter is led into nature ditch；
S2: asymmetric formula shield arch foundation construction is carried out, is specifically included:
S2.1: reserved top bar Core Soil divides layback slot tunneling shield skewback plinth to shield arch height of foundation；
S2.2: side slope carries out brush slope according to on-site actual situations, by slope ratio, and shield arch foundation width meets design and wants at guarantee slope foot
It asks, and side slope linked network carries out spray anchor gib；
S3: asymmetric formula shield arch construction specifically includes:
S3.1: the shield in high versant shield arch abutment portion encircles foundation construction, and shield arch foundation main reinforcement uses 25 spiral of φ, and reinforcing rib uses
16 spiral of φ, bar spacing 25cm, and high versant shield skewback plinth is reinforced using 3 32 grouting rock bolt slip castings of φ, with shield
Arch pours together；And the length of 32 grouting rock bolt of φ is 8.0m, 50cm is reserved in end；
S3.2: the shield in low versant shield arch abutment portion encircles foundation construction, and shield arch foundation main reinforcement uses 25 spiral of φ, and reinforcing rib uses
16 spiral of φ, bar spacing 25cm, low versant shield skewback plinth uses C35 steel bar concrete pile plinth, mixed to pile foundation
When solidifying soil intensity reaches 85% or more, pile crown is abolished, guarantees that pile foundation reinforcing bar deeply protects skewback plinth 80cm, pile foundation deeply protects skewback plinth
10cm；
S3.3: shield arch construction is carried out, and shield arch is supported after the completion of shield arch construction；
S4: the backfill of hole top refers specifically to: after protecting arch concrete strength and reaching the 70% of design value, being layered using gravelly soil
It is real to ram packing.
2. a kind of Shallow-buried asymmetry formula shield arch construction method according to claim 1, which is characterized in that step S2.2
In, spraying the anchor pole that uses in anchor gib is 22 grouting rock bolt of φ, and the grouting rock bolt length is 5m, adjacent grouting rock bolt it
Between spacing be 1.5 × 1.5 meters, and the grouting rock bolt be in quincuncial arrangement, grouting rock bolt leakage length be 70cm.
3. a kind of Shallow-buried asymmetry formula shield arch construction method according to claim 1, which is characterized in that step S2.2
In, side slope linked network is paved with using 6 steel mesh of φ, grid spacing 20cm × 20cm, and the concrete of injection is that 10cm thickness C25 net spray is mixed
Solidifying soil.
4. a kind of Shallow-buried asymmetry formula shield arch construction method according to claim 3, which is characterized in that described
The stake diameter of C35 steel bar concrete pile plinth is 1 meter, and stake is 15 meters long, 3 meters of longitudinal stake spacing.
5. a kind of Shallow-buried asymmetry formula shield arch construction method according to claim 1, which is characterized in that step S3.3
In, shield arch uses 80cm thickness C35 armored concrete, and shield arch main reinforcement uses 25 spiral of φ, and the spacing of 25 spiral of φ is
20cm；Longitudinal rib uses 16 spiral of φ, and the spacing of 16 spiral of φ is 25cm, 8 round steel of reinforcing rib φ, 8 round steel of φ
Spacing is 25cm.
6. a kind of Shallow-buried asymmetry formula shield arch construction method according to claim 5, which is characterized in that the shield
Arch uses I20 type I-shaped bracing members, and the spacing of the I20 type I-steel is 60cm.
7. a kind of Shallow-buried asymmetry formula shield arch construction method according to claim 1, which is characterized in that step S4
In, layering is rammed packing implementation work and is symmetrically carried out, and ensures that overburden cover is less than or equal to 3m.
8. a kind of Shallow-buried asymmetry formula shield arch construction method according to claim 7, which is characterized in that layering is rammed and filled out
The compactness of closely knit construction is more than or equal to 0.8, and the partial size of rubble used is less than or equal to 15cm.
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| CN201710179482.5A CN107060837B (en) | 2017-03-23 | 2017-03-23 | A kind of Shallow-buried asymmetry formula shield arch construction method |
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| CN201710179482.5A CN107060837B (en) | 2017-03-23 | 2017-03-23 | A kind of Shallow-buried asymmetry formula shield arch construction method |
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| CN107060837B true CN107060837B (en) | 2019-08-13 |
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| CN108661668A (en) * | 2018-04-28 | 2018-10-16 | 中铁六局集团天津铁路建设有限公司 | The exposed method for tunnel construction of arch part-structure |
| CN111608701B (en) * | 2020-06-02 | 2022-04-26 | 中铁隧道局集团有限公司 | Method for treating roof collapse of shallow tunnel entrance section |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3307858A1 (en) * | 1983-03-05 | 1984-09-06 | Thyssen Industrie Ag, 4300 Essen | Support system for a tunnel, in particular a railway tunnel |
| CN102518453A (en) * | 2011-12-14 | 2012-06-27 | 中铁十二局集团有限公司 | Quick tunnel-entrance construction method for bias-pressure shallow-buried or single-pressure tilting arenaceous loess tunnels |
| CN102839980A (en) * | 2012-08-25 | 2012-12-26 | 张双茁 | Highway tunnel structure and construction method thereof |
| CN204419195U (en) * | 2014-12-29 | 2015-06-24 | 山西省交通科学研究院 | A kind of supporting and protection structure pattern being applicable to tunnel portal section |
| CN105736017A (en) * | 2015-07-27 | 2016-07-06 | 中铁十二局集团有限公司 | Asymmetric unit forwardly-reversely arranged arch structure for primary supporting of tunnel |
-
2017
- 2017-03-23 CN CN201710179482.5A patent/CN107060837B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3307858A1 (en) * | 1983-03-05 | 1984-09-06 | Thyssen Industrie Ag, 4300 Essen | Support system for a tunnel, in particular a railway tunnel |
| CN102518453A (en) * | 2011-12-14 | 2012-06-27 | 中铁十二局集团有限公司 | Quick tunnel-entrance construction method for bias-pressure shallow-buried or single-pressure tilting arenaceous loess tunnels |
| CN102839980A (en) * | 2012-08-25 | 2012-12-26 | 张双茁 | Highway tunnel structure and construction method thereof |
| CN204419195U (en) * | 2014-12-29 | 2015-06-24 | 山西省交通科学研究院 | A kind of supporting and protection structure pattern being applicable to tunnel portal section |
| CN105736017A (en) * | 2015-07-27 | 2016-07-06 | 中铁十二局集团有限公司 | Asymmetric unit forwardly-reversely arranged arch structure for primary supporting of tunnel |
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| CN107060837A (en) | 2017-08-18 |
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| PB01 | Publication | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Ma Dong Inventor after: Lin Shaojun Inventor after: Yang Hongfei Inventor after: Zhao Sheng Inventor after: Liu Chunhui Inventor after: Wang Chuanzong Inventor after: Lv Zhijun Inventor after: Lv Xiuhua Inventor after: Wang Langfeng Inventor after: Tan Chaoyang Inventor after: He Xudong Inventor after: Lei Baoke Inventor before: Liu Chunhui Inventor before: Wang Chuanzong Inventor before: Tan Chaoyang Inventor before: He Xudong Inventor before: Lei Baoke Inventor before: Lin Shaojun Inventor before: Yang Hongfei Inventor before: Zhao Sheng |
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