CN114922205A - Detachable drainage device for preventing foreign soil from scouring - Google Patents
Detachable drainage device for preventing foreign soil from scouring Download PDFInfo
- Publication number
- CN114922205A CN114922205A CN202210619193.3A CN202210619193A CN114922205A CN 114922205 A CN114922205 A CN 114922205A CN 202210619193 A CN202210619193 A CN 202210619193A CN 114922205 A CN114922205 A CN 114922205A
- Authority
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- China
- Prior art keywords
- water
- interceptor
- protective net
- foreign soil
- slope
- 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.)
- Granted
Links
- 239000002689 soil Substances 0.000 title claims abstract description 59
- 238000009991 scouring Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 230000001681 protective effect Effects 0.000 claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 230000003628 erosive effect Effects 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011324 bead Substances 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
- 230000008439 repair process Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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 particularly relates to a detachable drainage device for preventing foreign soil from being washed, which comprises: the water interceptor is laid on the top of the side slope; the protective net is laid on the side face of the side slope; the water interceptor is ╰ -shaped, the arc section of the water interceptor is arranged along the slope of the foreign soil, and the horizontal section of the water interceptor is detachably arranged at the top of the side 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 arc section, so that the water flow is intercepted, and meanwhile, the protective net plays a role in limiting the soil for the passenger, thereby preventing the soil layer for the passenger from collapsing and sliding down.
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 being washed.
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 are caused to the ecological environment. Particularly, in areas such as long triangles, bead triangles, Jingjin Ji and the like with fast economic development, the engineering construction density is high, the strength is high, serious vegetation damage to mountains is caused, and a large number of rocky slopes are formed. Most of the exposed rocky slopes have serious weathering and crack development, so that disasters such as collapse, rockfall, water and soil loss and the like often occur, and the local ecological environment is seriously damaged.
At present, the common ecological restoration method for the rocky side slope mainly comprises soil dressing spraying, planting bags, fertilizer bags, ecological bags and other soil dressing slope protection methods, and the methods can form a soil dressing layer on the rocky side slope surface and provide a vegetation growth environment. However, in practice, it is found that conditions such as poor coupling and interface crack development are easily caused between the foreign soil layer and the rock slope at the lower part after rainfall, so that collapse and slippage of the foreign soil layer are caused, and the repairing effect of the rock slope is affected. And the modes of intercepting ditches, drainage ditches and the like are adopted to solve the problems, and the material waste and the economic loss are easily caused.
Disclosure of Invention
The invention provides a detachable drainage device for preventing foreign soil from being washed, wherein a water interceptor is arranged in an ╰ shape, an 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 on the side surface of the side slope to play a role in limiting the foreign soil, so that the collapse and the slippage of a foreign soil layer are prevented.
In order to solve the technical problem, the invention provides a detachable drainage device for preventing foreign soil from being washed, which comprises: the water interceptor is laid on the top of the side slope; the protective net is laid 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 removed soil, and the horizontal section of the water interceptor is detachably arranged at the top of the side 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 arc section.
Further, the arc section of the water interceptor is an arc surface body, and the top of the arc section is in contact with the soil slope; the surface of the cambered surface body is used for guiding open water flowing through the foreign soil slope; the bottom surface of the cambered surface body is used for guiding the dark water flowing through the foreign soil slope surface and enabling the dark water to fall onto the protective net.
Furthermore, the horizontal section of the water interceptor is a rectangular body so as to guide open water to flow through the top of the side slope.
Further, the first fastener includes: the first inserting holes are positioned on the horizontal section of the water interceptor; the first anchor rods penetrate through the corresponding first inserting holes and are vertically inserted into the tops of the side slopes.
Furthermore, the protective net is arranged at the joint of the horizontal section and the circular arc section of the water interceptor through stay wires at two sides and is fixed on the side surface of the side slope through a second fastener; 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 fastener comprises a plurality of second anchor rods; and the second anchor rod penetrates through the hole of the protective net and is horizontally inserted into the side face of the side slope.
Further, the protective net is a single-layer galvanized wire net; the stay wire is made of iron wire.
The detachable drainage device for preventing the foreign soil from being washed has the advantages that the water interceptor is arranged in ╰ shape, the arc section of the water interceptor is arranged along the foreign soil slope surface, the horizontal section of the water interceptor is detachably arranged at the top of the side slope, so that the water flow can be intercepted, the flow of the slope surface can be reduced, the foreign soil on the side slope is washed, the water flow can be drained from two sides, and the engineering quantity of engineering intercepting ditches and drainage ditches 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 slip off between the protective net and the side slope, the falling of alien soil of the side slope is reduced, the loss of alien soil in rainy seasons can be reduced, the alien soil maintenance effect is guaranteed, and the side slope repair 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 aforementioned and other objects, features and advantages of the present invention 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 used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a removable drain assembly;
in the figure:
the water cut-off device comprises a water cut-off device 1, an arc section 11 of the water cut-off device 1, a horizontal section 12 of the water cut-off device 1, a protective net 2, a stay wire 21, a side slope 3, the top 31 of the side slope 3, the side face 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
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides a detachable drainage device for preventing foreign soil from being washed, including: the water interceptor 1 is paved at the top 31 of the side slope 3; the protective net 2 is laid on the side face 32 of the side slope 3; the water interceptor 1 is ╰ -shaped, the arc section 11 of the water interceptor is arranged along the slope of the foreign soil, and the horizontal section 12 of the water interceptor is detachably arranged at the top 31 of the side slope 3 through a first fastener 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 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 the foreign soil slope surface; the surface of the cambered surface body is used for guiding open water flowing through the foreign soil slope; the bottom surface of the cambered surface body is used for guiding the dark water flowing through the foreign soil slope surface, enabling the dark water to fall onto the protective net 2 and then flowing into the drainage channel arranged along the protective net 2 for drainage. After the spraying of the foreign soil is completed, if the user experiences rainy seasons, the arc section 11 of the water interceptor 1 is used as the front end of the water interceptor, can be combined with the climate, environment, geological conditions and the like of a project area to adjust the angle and the length, and can play a role in intercepting water flow, so that the flow of the foreign soil slope is greatly reduced, the scouring of the foreign soil by the water flow is not reduced, the desired drainage effect is achieved, and the foreign soil maintenance effect is ensured.
Optionally, the horizontal section 12 of the water interceptor 1 is a rectangular body to guide the open water to flow through the top 31 of the side slope 3, the water flow easily washes the slope surface under the flowing action of the water flow, and the gap between the water interceptor 1 and the side slope 3 is reduced by connecting the circular arc section 11 of the water interceptor 1 and the horizontal section 12 thereof with the top 31 of 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, thereby preventing 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 intercepting ditches and drainage ditches is reduced, and the maintenance quality of the side slope is improved.
Specifically, the first fastening member 4 includes: the first inserting holes 41 are positioned on the horizontal section 11 of the water interceptor 1; a plurality of first anchor rods 42 are inserted into the tops 31 of the slopes 3 through the corresponding first inserting holes 41. When the surface of the first anchor rod along the width direction of the water interceptor 1 is vertical 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 connection and fixation of the water interceptor 1 and the side slope 3 are ensured. The fixed anchor rods are utilized to realize detachable connection between the water cut-off device and the side slope, the installation process is simple and convenient, and the connection between the water cut-off device bottom plate and the side slope is firm.
Further, the protective net 2 is installed at the joint of the horizontal section 12 and the circular arc section 11 of the water interceptor 1 through pull wires 21 at two sides and is fixed on the side 32 of the side slope 3 through a second fastener 5; the length of the stay 21 is adjusted to adjust the position of the protection net 2 on the side 32 of the side slope 3, so that the dark water falls onto the protection net 2. Specifically, the second fastening member 5 includes a plurality of second anchor rods 51; the second anchor rod passes through the hole of the protective net 2 and is horizontally inserted into the side 32 of the side slope 3.
Optionally, the protective net 2 is a single-layer galvanized iron wire net; the stay wire 21 is an iron wire, the iron wire penetrates through a through hole in the water cut-off device 1, the protective net 2 is fixed on the water cut-off device 1, the length of the iron wire can be adjusted as required to place the iron wire net at a proper position on the side face 32 of the side slope 3, so that the hidden water falls onto the protective net 2, the foreign soil is reduced from falling off between the protective net and the side slope, and the protective net can be prevented from falling off due to water flow scouring.
In conclusion, the detachable drainage device for preventing the erosion of the foreign soil has the advantages that the water interceptor is arranged in an ╰ shape, the circular arc section of the water interceptor is arranged along the slope surface of the foreign soil, and the horizontal section of the water interceptor is detachably arranged at the top of the side slope, so that the water flow can be intercepted, the flow of the slope surface can be reduced, the erosion of the side slope by the foreign soil can be reduced, the water flow can be drained from two sides, and the engineering quantity of engineering intercepting ditches and drainage ditches can be 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 many times, so that the engineering is efficient and quick; in addition, the protective net plays a role in limiting the alien soil, so that the alien soil is not easy to slip off when being positioned between the wire netting and the side slope, the alien soil is prevented from falling off, the loss of the alien soil in rainy seasons can be reduced, the alien soil maintenance effect is guaranteed, and the side slope maintenance quality is improved.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides a prevent removable drainage device that foreign soil washed away which characterized in that includes:
the water interceptor is laid on the top of the side slope;
the protective net is laid on the side face of the side slope; wherein
The water interceptor is ╰ -shaped, the arc section of the water interceptor is arranged along the foreign soil slope surface, and the horizontal section of the water interceptor is detachably arranged at the top of the side 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 arc section.
2. The removable drain device for preventing erosion of foreign soil according to claim 1,
the arc section of the water interceptor is an arc surface body, and the top of the water interceptor is contacted with the foreign soil slope surface;
the surface of the cambered surface body is used for guiding open water flowing through the foreign soil slope;
the bottom surface of the cambered surface body is used for guiding the dark water flowing through the foreign soil slope surface and enabling the dark water to fall onto the protective net.
3. The removable drain device for preventing erosion of foreign soil according to claim 2,
the horizontal section of the water interceptor is a rectangular body so as to guide open water to flow through the top of the side slope.
4. The removable drain device for preventing erosion of foreign soil according to claim 1,
the first fastener includes:
the first inserting holes are positioned on the horizontal section of the water interceptor;
the first anchor rods penetrate through the corresponding first inserting holes and are vertically inserted into the tops of the side slopes.
5. The removable drain device for preventing erosion of foreign soil according to claim 2,
the protective net is arranged at the joint of the horizontal section and the circular arc section of the water interceptor through pull 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.
6. The removable drain device for preventing erosion of foreign soil according to claim 5,
the second fastener comprises a plurality of second anchor rods;
and the second anchor rod penetrates through the hole of the protective net and is horizontally inserted into the side face of the side slope.
7. The removable drain device for preventing erosion of foreign soil according to claim 5,
the protective net is a single-layer galvanized wire netting;
the stay wire is made of 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 true CN114922205A (en) | 2022-08-19 |
| CN114922205B CN114922205B (en) | 2023-11-03 |
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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 |
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| Publication number | Publication date |
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| CN114922205B (en) | 2023-11-03 |
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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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