CN114922205B - Detachable drainage device for preventing foreign soil from scouring - Google Patents
Detachable drainage device for preventing foreign soil from scouring Download PDFInfo
- Publication number
- CN114922205B CN114922205B CN202210619193.3A CN202210619193A CN114922205B CN 114922205 B CN114922205 B CN 114922205B CN 202210619193 A CN202210619193 A CN 202210619193A CN 114922205 B CN114922205 B CN 114922205B
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- CN
- China
- Prior art keywords
- water
- slope
- protective net
- interceptor
- soil
- 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.)
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Links
- 239000002689 soil Substances 0.000 title claims abstract description 39
- 238000009991 scouring Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 230000001681 protective effect Effects 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000004162 soil erosion Methods 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
- E02D2300/0034—Steel; Iron in wire form
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention belongs to the technical field of geological engineering, and in particular relates to a detachable drainage device for preventing foreign soil from scouring, which comprises: the water interceptor is paved on the top of the side slope; the protective net is paved on the side face of the side slope; the water interceptor is ╰ -shaped, the circular arc section of the water interceptor is arranged along the slope of the soil, and the horizontal section of the water interceptor is detachably arranged at the top of the slope through a first fastener; and the top of the protective net is fixed on the water interceptor and is obliquely arranged towards the lower part of the circular arc section, so that the protective net plays a role in intercepting water flow, and meanwhile, the protective net plays a role in limiting foreign soil, so that collapse and sliding of the foreign soil layer are prevented.
Description
Technical Field
The invention belongs to the technical field of geological engineering, and particularly relates to a detachable drainage device for preventing foreign soil from scouring.
Background
With the economic development of China, large-scale engineering construction, mining and other artificial activities cause a large number of exposed rock slopes, and huge damage and influence on the ecological environment are caused. Especially in the areas of long triangle, bead triangle, jinjin Ji and the like with faster economic development, the engineering construction density is high and the intensity is high, so serious mountain vegetation is destroyed, and a large number of rock slopes are formed. Most of the bare rock slopes are seriously weathered, cracks develop, disasters such as collapse, rock fall, water and soil loss and the like occur frequently, and the local ecological environment is seriously damaged.
At present, the common ecological restoration method for the rock slope mainly comprises a foreign soil slope protection method such as foreign soil spray seeding, plant growth bags, fertilizer bags, ecological bags and the like, and the method can form a foreign soil layer on the rock slope surface and provide a vegetation growing environment. However, in practice, it is found that coupling difference, interface crack development and other conditions easily occur between the foreign soil layer and the lower rock slope after rainfall, so that collapse and sliding of the foreign soil layer are caused, and the repairing effect of the rock slope is affected. The problems are solved by adopting the modes of intercepting ditches, drainage ditches and the like, and the material waste and the economic loss are easy to cause.
Disclosure of Invention
The invention provides a detachable drainage device for preventing foreign soil from scouring, wherein a water interceptor is arranged in a ╰ shape, a circular arc section of the water interceptor is arranged along the slope surface of the foreign soil, a horizontal section of the water interceptor is detachably arranged at the top of a side slope to play a role in intercepting water flow, and a protective net is arranged at the side surface of the side slope to limit the foreign soil, so that collapse and sliding of the foreign soil layer are prevented.
In order to solve the technical problems, the present invention provides a detachable drainage device for preventing soil erosion, comprising: the water interceptor is paved on the top of the side slope; the protective net is paved on the side face of the side slope; the water interceptor is ╰ -shaped, the circular arc section of the water interceptor is arranged along the slope of the soil, and the horizontal section of the water interceptor is detachably arranged at the top of the slope through a first fastener; and the top of the protective net is fixed on the water interceptor and is obliquely arranged towards the lower part of the circular arc section.
Further, the arc section of the water interceptor is an arc surface body, and the top of the arc section is contacted with the soil-alien slope; the surface of the cambered surface body is used for guiding the clear water flowing through the soil slope; the bottom surface of the cambered surface body is used for guiding the dark water flowing through the soil-alienating slope surface and enabling the dark water to fall onto the protective net.
Further, the horizontal section of the water interceptor is rectangular to guide the clear water to flow through the top of the slope.
Further, the first fastener includes: the first plug holes are positioned on the horizontal section of the water cut-off device; the first anchor rods penetrate through the corresponding first inserting holes and are vertically inserted into the tops of the slopes.
Further, the protective net is arranged at the junction of the horizontal section and the circular arc section of the water cut-off device through stay wires at two sides and is fixed on the side face of the side slope through a second fastening piece; the length of the stay wire is adjusted to adjust the position of the protective net on the side face of the side slope so that the dark water falls onto the protective net.
Further, the second fasteners comprise a plurality of second anchor rods; the second anchor rod is horizontally inserted into the side face of the side slope through the holes of the protective net.
Further, the protective net is a single-layer galvanized iron wire net; the stay wire is an iron wire.
The detachable drainage device for preventing the soil erosion of the invention has the beneficial effects that the water interceptor is arranged in a ╰ shape, the circular arc section of the water interceptor is arranged along the soil erosion slope, the horizontal section of the water interceptor is detachably arranged at the top of the slope, the water flow can be intercepted, the slope flow can be reduced, the soil erosion of the slope is reduced, the water flow can be discharged from two sides, and the engineering quantity of the engineering intercepting ditch drainage ditch is reduced; meanwhile, the protective net is arranged on the side face of the side slope to limit the alien soil, so that the alien soil is not easy to slide between the protective net and the side slope, the alien soil falling off of the side slope is reduced, the loss of alien soil in rainy season is reduced, the alien soil maintenance effect is guaranteed, and the side slope maintenance quality is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a removable drain;
in the figure:
the water interception device comprises a water interception device 1, a circular arc section 11 of the water interception device 1, a horizontal section 12 of the water interception device 1, a protection net 2, a stay wire 21, a side slope 3, a top 31 of the side slope 3, a side surface 32 of the side slope 3, a first fastening piece 4, a first inserting hole 41, a first anchor rod 42, a second fastening piece 5 and a second anchor rod 51.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, this embodiment provides a detachable drainage device for preventing soil erosion, comprising: the water interceptor 1 is paved on the top 31 of the side slope 3; the protective net 2 is paved on the side surface 32 of the side slope 3; the water interceptor 1 is ╰ -shaped, the circular arc section 11 of the water interceptor is arranged along the slope of the soil, and the horizontal section 12 of the water interceptor is detachably arranged at the top 31 of the slope 3 through the first fastening piece 4; and the top of the protective net 2 is fixed on the water interceptor 1 and is obliquely arranged towards the lower part of the circular arc section 11.
Optionally, the arc section 11 of the water interceptor 1 is an arc surface body, and the top of the arc section contacts with the soil-alien slope; the surface of the cambered surface body is used for guiding the clear water flowing through the soil slope; the bottom surface of the cambered surface body is used for guiding the dark water flowing through the soil-alighting slope surface and enabling the dark water to fall onto the protective screen 2, and then the dark water flows into a drainage channel along the protective screen 2 for drainage. After the soil is sprayed and planted, the arc section 11 of the water interceptor 1 is used as the front end of the water interceptor when the soil is sprayed and planted in rainy seasons, and can play a role in intercepting water flow by combining the climate, environment, geological conditions and other adjustment angles and lengths of an engineering area, so that the flow of the soil is greatly reduced, the scouring of the soil by the water flow is not reduced, the desired drainage effect is achieved, and the soil is maintained.
Optionally, the horizontal section 12 of the water interceptor 1 is rectangular to guide the clear water to flow through the top 31 of the side slope 3, under the flowing action of the water flow, the water flow easily washes the slope, and the arc section 11 of the water interceptor 1 and the horizontal section 12 thereof are connected with the top 31 of the side slope 3 to reduce the gap between the water interceptor 1 and the side slope 3, so that the water flow can be intercepted, and then the water flow is discharged through the horizontal section 12 of the top 31 of the side slope 3 to avoid the water flow from washing the side slope; meanwhile, the water interceptor 1 is detachably connected with the top 31 of the side slope 3, so that the number of water interceptor ditches and drainage ditches is reduced, and the repairing quality of the side slope is improved.
Specifically, the first fastener 4 includes: a plurality of first plug holes 41 positioned on the horizontal section 11 of the water cutter 1; the plurality of first anchor rods 42 penetrate through the corresponding first inserting holes 41 and are vertically inserted into the top 31 of the side slope 3. When the surface of the first anchor rod along the width direction of the water interceptor 1 is perpendicular to the surface of the top 31 of the side slope 3, the first anchor rod can be contacted with the side slope 3 in a larger area, so that the water interceptor 1 and the side slope 3 are fixedly connected. The water interceptor and the side slope are detachably connected by the fixed anchor rod, so that the installation process is simple and convenient, and the bottom plate of the water interceptor and the side slope are firmly connected.
Further, the protective net 2 is arranged at the junction of the horizontal section 12 and the circular arc section 11 of the water cutter 1 through stay wires 21 at two sides and is fixed on the side surface 32 of the side slope 3 through a second fastening piece 5; the length of the stay wire 21 is adjusted to adjust the position of the protective net 2 on the side face 32 of the side slope 3 so that the dark water falls onto the protective net 2. Specifically, the second fastening member 5 includes a plurality of second anchor rods 51; the second anchor rod is horizontally inserted into the side face 32 of the side slope 3 through the holes of the protective net 2.
Optionally, the protection net 2 is a single-layer galvanized iron wire net; the stay wire 21 is an iron wire, the iron wire passes through a through hole in the water interceptor 1, so that the protective screen 2 is fixed on the water interceptor 1, the length of the iron wire can be adjusted according to the requirement to enable the iron wire to be placed at a proper position on the side face 32 of the side slope 3, so that dark water falls onto the protective screen 2, thereby reducing falling of soil from between the protective screen and the side slope, and also avoiding falling of the protective screen caused by water flow scouring.
In summary, the removable drainage device for preventing the soil erosion of the invention sets the water interceptor in ╰ shape, the circular arc section of the water interceptor is arranged along the soil erosion slope, the horizontal section of the water interceptor is detachably arranged at the top of the slope, and the water flow of the slope is reduced, so that the soil erosion of the slope is reduced, the water flow can be discharged from two sides, and the engineering quantity of engineering intercepting ditches and drainage ditches is reduced; meanwhile, the water interceptor is detachably connected with the side slope, so that the transportation and construction are convenient, and the water interceptor can be recycled for multiple times, and the engineering is efficient and quick; in addition, the protective net plays a role in limiting foreign soil, so that the foreign soil is not easy to slide between the wire netting and the side slope, thereby not only reducing the falling of the foreign soil, but also reducing the loss of the foreign soil in rainy season, thereby ensuring the maintenance effect of the foreign soil and improving the maintenance quality of the side slope.
In the description of embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. A removable drain for preventing soil erosion, comprising:
the water interceptor is paved on the top of the side slope;
the protective net is paved on the side face of the side slope; wherein the method comprises the steps of
The water interceptor is ╰ -shaped, the arc section of the water interceptor is arranged along the slope of the soil, and the horizontal section of the water interceptor is detachably arranged at the top of the slope through a first fastener; and
the top of the protective net is fixed on the water interceptor and is obliquely arranged towards the lower part of the circular arc section;
the arc section of the water interceptor is an arc surface body, and the top of the arc section is contacted with the soil-alien slope;
the surface of the cambered surface body is used for guiding the clear water flowing through the soil slope;
the bottom surface of the cambered surface body is used for guiding the dark water flowing through the soil-alienating slope surface and enabling the dark water to fall onto the protective net;
the protective net is arranged at the junction of the horizontal section and the circular arc section of the water cut-off device through stay wires at two sides and is fixed on the side surface of the side slope through a second fastening piece;
the length of the stay wire is adjusted to adjust the position of the protective net on the side face of the side slope so that the dark water falls onto the protective net.
2. The removable drain device for preventing soil erosion according to claim 1, wherein,
the horizontal section of the water interceptor is a rectangular body so as to guide the clear water to flow through the top of the side slope.
3. The removable drain device for preventing soil erosion according to claim 2, wherein,
the first fastener includes:
the first plug holes are positioned on the horizontal section of the water cut-off device;
the first anchor rods penetrate through the corresponding first inserting holes and are vertically inserted into the tops of the slopes.
4. The removable drain device for preventing soil erosion according to claim 3,
the second fastening piece comprises a plurality of second anchor rods;
the second anchor rod is horizontally inserted into the side face of the side slope through the holes of the protective net.
5. The removable drain device for preventing soil erosion as defined in claim 4, wherein,
the protective net is a single-layer galvanized iron wire net;
the stay wire is an iron wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210619193.3A CN114922205B (en) | 2022-06-02 | 2022-06-02 | Detachable drainage device for preventing foreign soil from scouring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210619193.3A CN114922205B (en) | 2022-06-02 | 2022-06-02 | Detachable drainage device for preventing foreign soil from scouring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114922205A CN114922205A (en) | 2022-08-19 |
| CN114922205B true CN114922205B (en) | 2023-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210619193.3A Active CN114922205B (en) | 2022-06-02 | 2022-06-02 | Detachable drainage device for preventing foreign soil from scouring |
Country Status (1)
| Country | Link |
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| CN (1) | CN114922205B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000160535A (en) * | 1998-11-27 | 2000-06-13 | Masashi Furukawa | Inclined waterway, slope face structure having inclined waterway and waterway block |
| KR100775357B1 (en) * | 2007-01-25 | 2007-11-09 | 한국건설기술연구원 | Slope stabilizing structure using the arch type block |
| CN105684591A (en) * | 2016-01-05 | 2016-06-22 | 中山大学 | Ecological protection structure suitable for south rack slope drainage waterlogging prevention |
| CN208328947U (en) * | 2018-03-30 | 2019-01-04 | 泰安市通达投资有限公司 | A kind of fish scale-shaped sash for side slope protection |
| CN208604614U (en) * | 2018-08-08 | 2019-03-15 | 陈新辉 | A kind of new concrete slope protection greening structure |
| CN212983896U (en) * | 2020-06-14 | 2021-04-16 | 米占起 | Drainage device for artificial mountain steep slope |
| CN213086821U (en) * | 2020-07-17 | 2021-04-30 | 四川地丰建设工程有限公司 | Municipal administration road slope surface structure |
| CN213741142U (en) * | 2020-11-25 | 2021-07-20 | 安徽百年基业建设工程有限公司 | Roadbed slope protection structure |
| CN113897974A (en) * | 2021-11-04 | 2022-01-07 | 中国十七冶集团有限公司 | Enclosing purlin internally-hung intercepting ditch and installation method |
| CN216130151U (en) * | 2021-10-27 | 2022-03-25 | 北京岩土工程勘察院有限公司 | Prevent that rainstorm from scouring side slope in mine is administering |
| CN216194828U (en) * | 2021-10-20 | 2022-04-05 | 浙江秦核环境建设有限公司 | Ecological structure of administering of green mine soil |
-
2022
- 2022-06-02 CN CN202210619193.3A patent/CN114922205B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000160535A (en) * | 1998-11-27 | 2000-06-13 | Masashi Furukawa | Inclined waterway, slope face structure having inclined waterway and waterway block |
| KR100775357B1 (en) * | 2007-01-25 | 2007-11-09 | 한국건설기술연구원 | Slope stabilizing structure using the arch type block |
| CN105684591A (en) * | 2016-01-05 | 2016-06-22 | 中山大学 | Ecological protection structure suitable for south rack slope drainage waterlogging prevention |
| CN208328947U (en) * | 2018-03-30 | 2019-01-04 | 泰安市通达投资有限公司 | A kind of fish scale-shaped sash for side slope protection |
| CN208604614U (en) * | 2018-08-08 | 2019-03-15 | 陈新辉 | A kind of new concrete slope protection greening structure |
| CN212983896U (en) * | 2020-06-14 | 2021-04-16 | 米占起 | Drainage device for artificial mountain steep slope |
| CN213086821U (en) * | 2020-07-17 | 2021-04-30 | 四川地丰建设工程有限公司 | Municipal administration road slope surface structure |
| CN213741142U (en) * | 2020-11-25 | 2021-07-20 | 安徽百年基业建设工程有限公司 | Roadbed slope protection structure |
| CN216194828U (en) * | 2021-10-20 | 2022-04-05 | 浙江秦核环境建设有限公司 | Ecological structure of administering of green mine soil |
| CN216130151U (en) * | 2021-10-27 | 2022-03-25 | 北京岩土工程勘察院有限公司 | Prevent that rainstorm from scouring side slope in mine is administering |
| CN113897974A (en) * | 2021-11-04 | 2022-01-07 | 中国十七冶集团有限公司 | Enclosing purlin internally-hung intercepting ditch and installation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114922205A (en) | 2022-08-19 |
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Inventor after: Liu Jin Inventor after: Sun Yunru Inventor after: Huang Tingwei Inventor after: Ma Xiaofan Inventor after: Li Jinyang Inventor after: Zhu Chun Inventor after: Chang Xiaolian Inventor after: Liu Kezi Inventor after: Chen Xiaoying Inventor before: Sun Yunru Inventor before: Liu Jin Inventor before: Huang Tingwei Inventor before: Ma Xiaofan Inventor before: Li Jinyang Inventor before: Zhu Chun Inventor before: Chang Xiaolian Inventor before: Liu Kezi Inventor before: Chen Xiaoying |
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