CN113186949B - Drainage and slope protection system for high and steep rock slopes - Google Patents
Drainage and slope protection system for high and steep rock slopes Download PDFInfo
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- CN113186949B CN113186949B CN202110459298.2A CN202110459298A CN113186949B CN 113186949 B CN113186949 B CN 113186949B CN 202110459298 A CN202110459298 A CN 202110459298A CN 113186949 B CN113186949 B CN 113186949B
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
本发明公开了一种导排水护坡系统，尤其公开一种用于高陡岩质边坡的导排水护坡系统，属于水电工程建筑物设计建造技术领域。本发明还公开了一种用于所述导排水护坡系统的施工方法。提供一种施工难度相对较小，施工开挖量显著降低的用于高陡岩质边坡的导排水护坡系统及其施工方法。所述的导排水护坡系统包括边坡防护结构，所述的导排水护坡系统还包括集水导排结构，所述的集水导排结构与边坡防护结构防护的边坡坡面呈30～35度夹角的布置在边坡坡体的中下部。所述的施工方法包括进行骨架插筋的施工，将网片钢筋采用连接箍筋固定在骨架插筋外露部分的上部，对边坡及排水沟喷混凝土施工以及对边坡排水孔钻孔施工几个步骤。
The present invention discloses a drainage slope protection system, and in particular discloses a drainage slope protection system for high and steep rock slopes, belonging to the technical field of design and construction of hydropower engineering buildings. The present invention also discloses a construction method for the drainage slope protection system. Provided is a drainage slope protection system for high and steep rock slopes with relatively low construction difficulty and significantly reduced construction excavation volume and a construction method thereof. The drainage slope protection system includes a slope protection structure, and the drainage slope protection system also includes a water collection and drainage structure. The water collection and drainage structure is arranged at the middle and lower part of the slope body at an angle of 30 to 35 degrees with the slope surface protected by the slope protection structure. The construction method includes the steps of constructing a skeleton dowel, fixing the mesh steel bars to the upper part of the exposed part of the skeleton dowel with connecting stirrups, spraying concrete on the slope and drainage ditch, and drilling drainage holes on the slope.
Description
Technical Field
The invention relates to a drainage slope protection system, in particular to a drainage slope protection system for a steep rocky slope, and belongs to the technical field of design and construction of hydroelectric engineering buildings. The invention also relates to a construction method for the water guiding, draining and slope protecting system.
Background
The slope drainage ditch is a common treatment measure in slope engineering, and forms a slope interception, prevention and drainage network together with the intercepting ditch, slope spraying concrete and slope drainage holes, so that the slope drainage ditch has very important effects of reducing the water content in the slope body, reducing the osmotic pressure in the slope body and ensuring that the inside of the slope is in a drainage and stable state.
At present, a conventional drainage ditch arrangement scheme of firstly excavating and then building a steep rocky side slope is mostly adopted, as shown in fig. 1 and 2. The structure is characterized in that 1) a slope drainage protection system consists of sprayed concrete, drainage holes and drainage ditches, 2) the drainage ditches are arranged on a platform formed by excavating a slope natural topography line, the platform is provided with a certain slope guiding side, 3) a concrete side wall is arranged on the outer side of the platform and anchored on a rock body below the platform through dowel bars, and 4) the sprayed concrete is arranged at the bottom of the platform and on the inner side slope. The structure has the advantages of being reliable in structure and good in drainage effect. The structure has the main problems that 1) due to high and steep terrain, the height of an excavated side slope formed by platform excavation is high, the excavation amount is large, 2) platform excavation blasting operation is carried out on a high and steep side slope with relatively poor geological conditions, a certain disturbance can be caused to a side slope rock mass, the stability of the side slope is reduced, and 3) when the height difference between the platform and the ground or the height difference between the platform and a construction platform is large, the casting construction difficulty of a concrete side wall on the outer side of the platform is relatively large.
Disclosure of Invention
The application aims to solve the technical problem of providing the drainage slope protection system for the high and steep rocky slope, which is relatively small in construction difficulty and remarkably reduces the construction excavation amount. The application also provides a construction method for the water guiding, draining and slope protecting system.
The technical scheme is that the drainage and slope protection system for the steep rocky side slope comprises a side slope protection structure, the drainage and slope protection system further comprises a water collecting and guiding structure, and the water collecting and guiding structure and the side slope protected by the side slope protection structure are arranged at the middle lower part of the side slope body and form an included angle of 30-35 degrees.
Further, the slope protection structure is a concrete layer sprayed on the high and steep rock slope surface with the loose soil layer cleaned.
The preferable mode of the scheme is that the concrete layer is also provided with a drain hole extending into the high and steep rock slope body, and the outlet of the drain hole is arranged in the high and steep rock slope body in a downward inclined way.
Further, the water collecting and guiding structure comprises a supporting and connecting framework, a fixed supporting component and a water collecting and guiding groove component, wherein the water collecting and guiding groove component is arranged at the middle lower part of the side slope body through the supporting and connecting framework under the cooperation of the fixed supporting component.
The preferable mode of the scheme is that the support connection framework comprises at least one row of inclined framework dowel bars inserted into the middle lower part of the side slope body, and the fixed support component is arranged on the part of the framework dowel bars extending out of the side slope body.
Further, the fixed support component comprises a net piece steel bar and a connecting stirrup, the water collecting guide and drainage ditch component is supported on the net piece steel bar, and the net piece steel bar is connected with the framework dowel bar through the connecting stirrup.
The preferable mode of the scheme is that the water collecting guide and drainage ditch component is a concrete spraying layer attached to the mesh steel bars, and the thickness of the concrete spraying layer is 10-15 cm.
Furthermore, each framework dowel bar is obliquely inserted into the high and steep rock slope body from the whole along the length direction of the slope.
The construction method comprises the steps of constructing skeleton dowel bars, fixing mesh steel bars on the upper part of the exposed parts of the skeleton dowel bars by adopting connecting stirrups, spraying concrete on a side slope and a drainage ditch, and drilling holes on the side slope drainage ditch.
Further, loose soil and stones on the natural topography line of the side slope are cleaned before skeleton dowel bar construction is carried out.
The water-collecting guide-drainage slope protection system has the beneficial effects that the water-collecting guide-drainage structure is additionally arranged on the basis of the existing slope protection structure to form the water-collecting guide-drainage slope protection system, and then the water-collecting guide-drainage structure and the slope protected by the slope protection structure are directly arranged at the middle lower part of the slope body at an included angle of 30-35 degrees. Therefore, when the drainage slope protection system is constructed, rock wall excavation is not needed, the framework dowel bar is constructed directly, then the net piece reinforcement bar is fixed on the upper portion of the exposed part of the framework dowel bar by adopting stirrups, then the construction of the slope and drainage ditch spray concrete construction and the slope drainage hole drilling construction can be completed rapidly, the construction difficulty is effectively reduced, the construction excavation amount is obviously reduced, the construction cost is reduced, and the aim of improving the construction safety is fulfilled.
Drawings
FIG. 1 is a schematic view of a construction of a prior art side slope drainage ditch according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic diagram of the drainage slope protection system for a steep rocky slope according to the present invention;
Fig. 4 is a B-B cross-sectional view of fig. 3.
The water collecting and guiding structure is characterized by comprising a side slope protection structure 1, a water collecting and guiding structure 2, a side slope surface 3, a side slope body 4, a water draining hole 5, a supporting and connecting framework 6, a fixed supporting component 7, a water collecting and guiding and draining ditch component 8, net piece reinforcing steel bars 9 and connecting stirrups 10.
Detailed Description
As shown in figures 3 and 4, the drainage slope protection system for the high-steep rock slope, which is provided by the application, has relatively small construction difficulty and remarkably reduced construction excavation amount, and a construction method for the drainage slope protection system. The water guiding, draining and slope protecting system comprises a slope protecting structure 1, the water guiding, draining and slope protecting system further comprises a water collecting and draining structure 2, and the water collecting and draining structure 2 and a slope surface 3 protected by the slope protecting structure 1 are arranged at the middle lower part of a slope body 4 in a 30-35-degree included angle. The water collecting and guiding and draining system is formed by additionally arranging the water collecting and guiding and draining structure on the basis of the existing slope protection structure, and then the water collecting and guiding and draining structure and the slope protected by the slope protection structure are directly arranged at the middle lower part of the slope body at an included angle of 30-35 degrees. Therefore, when the drainage slope protection system is constructed, rock wall excavation is not needed, the framework dowel bar is constructed directly, then the net piece reinforcement bar is fixed on the upper portion of the exposed part of the framework dowel bar by adopting stirrups, then the construction of the slope and drainage ditch spray concrete construction and the slope drainage hole drilling construction can be completed rapidly, the construction difficulty is effectively reduced, the construction excavation amount is obviously reduced, the construction cost is reduced, and the aim of improving the construction safety is fulfilled.
In the above embodiment, in combination with the structural characteristics that the existing slope protection structure 1 is a concrete layer sprayed on a high and steep rock slope surface where loose soil layers are cleaned, the application further provides a drain hole 5 extending into the high and steep rock slope surface in the concrete layer, and the drain hole 5 is arranged in the high and steep rock slope surface in an upward inclined manner. Further, in order to reduce construction workload to the greatest extent, reduce construction difficulty and ensure stability and reliability of the drainage ditch, the water collecting and drainage structure 2 of the application comprises a support connection framework 6, a fixed support component 7 and a water collecting and drainage ditch component 8, wherein the water collecting and drainage ditch component 8 is arranged at the middle lower part of the side slope body 4 through the support connection framework 6 under the cooperation of the fixed support component 7. At this time, the supporting and connecting framework 6 should include at least one row of framework dowel bars inserted at the middle and lower part of the side slope body, the fixed supporting component 7 is arranged on a part of the framework dowel bars extending out of the side slope body 4, the fixed supporting component 7 may include mesh reinforcing bars 9 and connecting hoops 10, the water collecting and guiding groove component 8 is supported on the mesh reinforcing bars 9, the mesh reinforcing bars 9 are connected with the framework dowel bars through the connecting hoops 10, and the water collecting and guiding groove component 8 is a concrete spraying layer attached to the mesh reinforcing bars 9, and the thickness of the concrete spraying layer is 10-15 cm. Correspondingly, in order to facilitate guiding and draining, each framework dowel bar is obliquely inserted into the high and steep rocky slope body from the whole along the length direction of the slope. And during construction, loose soil and stones on the natural topography line of the side slope are cleaned before skeleton dowel bar construction is carried out.
In summary, the technical proposal provided by the application has the following advantages,
1) The drainage ditch adopts the implementation scheme of the dowel bars, the mesh steel bars and the sprayed concrete, so that the excavation construction of the side slope is not needed, and the influence of excavation blasting on the stability of the side slope is avoided;
2) The structure composed of the dowel bars, the net piece steel bars and the sprayed concrete forms a closed waterproof triangle channel structure on the section together with the slope sprayed concrete, and the slope guiding side is arranged, so that the requirements of the slope drainage function can be met;
3) Compared with the conventional drainage ditch scheme, the construction method has the advantages that high and steep side slope excavation construction and high-difference large-platform concrete retaining wall pouring construction are avoided, the construction process is more convenient, and the construction difficulty is greatly reduced.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The application aims to solve the technical problem of providing a high-steep side slope drainage structure which not only meets the drainage function requirement, but also can avoid excavation construction, reduce disturbance to high-steep side slopes and reduce construction difficulty, and a construction method thereof.
The technical scheme adopted for solving the technical problems is as follows:
1) The slope surface drainage protection system consists of sprayed concrete, drainage holes and drainage ditches;
2) The drainage ditch structure is respectively provided with a dowel bar, a net piece steel bar and sprayed concrete from bottom to top, and a certain gradient guiding side is required to be arranged on the drainage ditch;
3) The azimuth angle of the dowel bar is perpendicular to the trend of the slope surface, and the inclination angle of the dowel bar is 30-35 degrees with the included angle of the slope surface;
4) The adjacent dowel bars are connected by adopting net piece steel bars, the bottoms of the net piece steel bars are connected with the slope surface sprayed concrete, the tops of the net piece steel bars are slightly lower than the tail ends of the exposed parts of the dowel bars, and the net piece steel bars are fixed on the exposed parts of the dowel bars by adopting stirrups;
5) The sprayed concrete is arranged at the upper part of the net sheet steel bar, the thickness of the steel plate is 10-15 cm, the lower part is overlapped with the side slope sprayed concrete, and the upper part does not exceed the tail end of the exposed part of the dowel bar.
The construction method adopted for solving the technical problems is as follows:
Firstly, loose soil and stones on a natural topography line of a side slope are cleaned;
Secondly, constructing the dowel bars of the drainage ditch;
Thirdly, fixing the mesh reinforcing steel bars on the upper parts of the exposed parts of the dowel bars by adopting stirrups;
Fourthly, developing side slope and drainage ditch concrete spraying construction;
And finally, carrying out slope drainage hole drilling construction.
Example 1
The technical scheme of the application is further described below with reference to the accompanying drawings and examples:
as shown in the figure, the technical scheme adopted by the application for solving the technical problems is as follows:
a. the slope surface drainage protection system consists of sprayed concrete, drainage holes and drainage ditches;
b. the drainage ditch structure is respectively provided with a dowel bar, a net piece steel bar and sprayed concrete from bottom to top, and a drainage ditch is provided with a certain gradient guiding side;
c. the azimuth angle of the dowel bar is perpendicular to the trend of the slope surface, and the inclination angle of the dowel bar is 30-35 degrees with the included angle of the slope surface;
d. the adjacent dowel bars are connected by adopting net piece steel bars, the bottoms of the net piece steel bars are connected with the slope surface sprayed concrete, the tops of the net piece steel bars are slightly lower than the tail ends of the exposed parts of the dowel bars, and the net piece steel bars are fixed on the exposed parts of the dowel bars by adopting stirrups;
e. The sprayed concrete is arranged at the upper part of the net sheet steel bar, the thickness of the steel plate is 10-15 cm, the lower part is overlapped with the side slope sprayed concrete, and the upper part does not exceed the tail end of the exposed part of the dowel bar.
The construction method for solving the technical problems of the application is as follows:
a. Firstly, loose soil and stones on a natural topography line of a side slope are cleaned;
b. secondly, constructing the dowel bars of the drainage ditch;
c. thirdly, fixing the mesh reinforcing steel bars on the upper parts of the exposed parts of the dowel bars by adopting stirrups;
d. fourthly, developing side slope and drainage ditch concrete spraying construction;
e. and finally, carrying out slope drainage hole drilling construction.
The beneficial effects of the application are as follows:
a. the drainage ditch adopts the implementation scheme of the dowel bars, the mesh steel bars and the sprayed concrete, so that the excavation construction of the side slope is not needed, and the influence of excavation blasting on the stability of the side slope is avoided;
b. The structure composed of the dowel bars, the net piece steel bars and the sprayed concrete forms a closed waterproof triangle channel structure on the section together with the slope sprayed concrete, and the slope guiding side is arranged, so that the requirements of the slope drainage function can be met;
c. Compared with the conventional drainage ditch scheme, the construction method has the advantages that high and steep side slope excavation construction and high-difference large-platform concrete retaining wall pouring construction are avoided, the construction process is more convenient, and the construction difficulty is greatly reduced.
In conclusion, the high-steep slope drainage structure provided by the application not only meets the drainage function requirement, but also can avoid excavation construction, reduce disturbance to the high-steep slope and reduce construction difficulty.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110459298.2A CN113186949B (en) | 2021-04-27 | 2021-04-27 | Drainage and slope protection system for high and steep rock slopes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110459298.2A CN113186949B (en) | 2021-04-27 | 2021-04-27 | Drainage and slope protection system for high and steep rock slopes |
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| CN113186949A CN113186949A (en) | 2021-07-30 |
| CN113186949B true CN113186949B (en) | 2025-05-27 |
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| CN202110459298.2A Active CN113186949B (en) | 2021-04-27 | 2021-04-27 | Drainage and slope protection system for high and steep rock slopes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114809036B (en) * | 2022-05-05 | 2024-06-04 | 中国电建集团贵州电力设计研究院有限公司 | Prefabricated high-waterproof ecological slope protection construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205100354U (en) * | 2015-11-11 | 2016-03-23 | 中国电建集团中南勘测设计研究院有限公司 | Side slope with escape canal |
| CN211312550U (en) * | 2019-10-21 | 2020-08-21 | 惠州市第一建筑工程有限公司 | Side slope supporting structure |
| CN214993954U (en) * | 2021-04-27 | 2021-12-03 | 中国电建集团成都勘测设计研究院有限公司 | Drainage and guide slope protection system for high and steep rock slope |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121249A (en) * | 2011-04-06 | 2011-07-13 | 中国水电顾问集团华东勘测设计研究院 | Slope protection structure for reducing water and soil loss of side slope and construction method thereof |
| JP5832005B1 (en) * | 2015-07-06 | 2015-12-16 | 株式会社地盤リスク研究所 | Slope drainage structure |
| JP6966287B2 (en) * | 2016-11-04 | 2021-11-10 | 積水化学工業株式会社 | Stormwater drainage system |
| CN210658608U (en) * | 2019-08-29 | 2020-06-02 | 中国水利水电第八工程局有限公司 | Cut drainage device suitable for side slope |
| CN111894102A (en) * | 2020-08-10 | 2020-11-06 | 中铁第四勘察设计院集团有限公司 | Cut-off trough unit and cut-off ditch structure of side slope |
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- 2021-04-27 CN CN202110459298.2A patent/CN113186949B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205100354U (en) * | 2015-11-11 | 2016-03-23 | 中国电建集团中南勘测设计研究院有限公司 | Side slope with escape canal |
| CN211312550U (en) * | 2019-10-21 | 2020-08-21 | 惠州市第一建筑工程有限公司 | Side slope supporting structure |
| CN214993954U (en) * | 2021-04-27 | 2021-12-03 | 中国电建集团成都勘测设计研究院有限公司 | Drainage and guide slope protection system for high and steep rock slope |
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