CN206204891U - Prevent the drainage structure for debris flow of diversion tunnel outlet obstruction - Google Patents
Prevent the drainage structure for debris flow of diversion tunnel outlet obstruction Download PDFInfo
- Publication number
- CN206204891U CN206204891U CN201621262619.0U CN201621262619U CN206204891U CN 206204891 U CN206204891 U CN 206204891U CN 201621262619 U CN201621262619 U CN 201621262619U CN 206204891 U CN206204891 U CN 206204891U
- Authority
- CN
- China
- Prior art keywords
- dregs
- debris flow
- blocking dam
- mud
- flow
- 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.)
- Active
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a kind of drainage structure for debris flow for preventing diversion tunnel outlet obstruction in Hydraulic and Hydro-Power Engineering field, the structure includes the dregs-blocking dam being arranged between water conservancy diversion hole outlet and debris flow gully, the dregs-blocking dam is located in debris flow gully, the angle α of the upstream end of dregs-blocking dam length direction and the bearing of trend of debris flow gully<60 °, the row of being additionally provided with leads barricade between dregs-blocking dam and water conservancy diversion hole outlet, and the beneficial effects of the utility model are：Dregs-blocking dam can consolidate the material resource in raceway groove, play a part of mud-rock flow of blocking, and when there is medium-scale mud-rock flow, dregs-blocking dam can make mud-rock flow flow to the downstream away from water conservancy diversion hole outlet, and the influence to diversion tunnel discharge capacity is mitigated to greatest extent；When there is fairly large mud-rock flow, the direction that barricade changes mud-rock flow movement can be led by row, debris flow drainage being directed at the downstream away from water conservancy diversion hole outlet, it is to avoid extensive mud-rock flow results in blockage to water conservancy diversion hole outlet and causes serious construction time potential safety hazard.
Description
Technical field
The utility model is related to Hydraulic and Hydro-Power Engineering field, and in particular to a kind of mud for preventing diversion tunnel outlet obstruction
Rock glacier arranges guide structure.
Background technology
Mud-rock flow refers to the landslide or mighty torrent triggered under the effect of heavy rain, severe snow, earthquake or other natural calamities,
And carry the solid sundries such as a large amount of silts and stone.This natural calamity mostly occurs in the precipitous area of Narrow Valleys, landform, tool
Have that sudden, flow velocity is fast, last the features such as short, flow is big, solid matter is more, destructive power is strong, excursion is wide.
In recent years, Southwestern China area water power great development, many large hydropower stations are in deep mountain valleys area, Ground arrangement
Narrow, project playout space is very limited, the diversion tunnel construction time can normally earial drainage turn into construction of hydropower plant success or failure key.
However, due to the special geological structure in southwest Canyon Area, there are the feelings being exactly located near debris flow gully in water conservancy diversion hole outlet
Condition, now, if there is mud-rock flow, water conservancy diversion hole outlet is easily blocked and has a strong impact on the safety of Construction of Hydropower Engineering.
Therefore, diversion tunnel outlet obstruction how is prevented, debris flow gully is carried out effective to be treated as construction of hydropower plant
The new problem of urgent need to resolve.
Utility model content
To overcome existing diversion tunnel exit to keep off protection structure without silt flow, diversion tunnel blocking is easily caused in the event of mud-rock flow
Deng deficiency, technical problem to be solved in the utility model is：A kind of mudstone that can effectively prevent diversion tunnel outlet obstruction is provided
Stream row's guide structure.
The utility model solves the technical scheme that its technical problem used：Prevent the mud-rock flow of diversion tunnel outlet obstruction
Row's guide structure, including the dregs-blocking dam between water conservancy diversion hole outlet and debris flow gully is arranged on, the dregs-blocking dam is located in debris flow gully,
The upstream end of dregs-blocking dam length direction and the angle α of the bearing of trend of debris flow gully<60°.
It is further that the dregs-blocking dam is gravity dam structure, and osculum is provided with the middle part of dam body.
It is further that the dregs-blocking dam dam body is highly 8~15m, and the gradient of osculum is 1%~4%.
It is further that the row of being additionally provided with leads barricade between the dregs-blocking dam and water conservancy diversion hole outlet, row leads barricade higher than debris retaining
Dam.
Further that the row leads barricade for pH-static method, row lead the export mouth of barricade from water conservancy diversion hole outlet away from
From more than 150m, row leads wall height than more than debris retaining height of dam 5m.
It is further that it is the L-type to river course updrift side bending that the row leads barricade, broken line angle is β, wherein 90 °<
β<135°。
The beneficial effects of the utility model are：By arranging one dregs-blocking dam in debris flow gully raceway groove, to consolidate raceway groove
Interior material resource, when there is bench scale mud-rock flow, can play a part of mud-rock flow of blocking, it is to avoid mud-rock flow goes out into diversion tunnel
Mouth region domain；When there is medium-scale mud-rock flow, dregs-blocking dam can make mud-rock flow flow to the downstream away from water conservancy diversion hole outlet, maximum limit
Influence of the mitigation of degree to diversion tunnel discharge capacity；When there is fairly large mud-rock flow, partly fail what is guided by dregs-blocking dam
Mud-rock flow will from dregs-blocking dam top overflow and mistake, by row lead barricade change mud-rock flow movement direction, debris flow drainage is directed at
Away from the downstream of water conservancy diversion hole outlet, it is to avoid extensive mud-rock flow results in blockage to water conservancy diversion hole outlet and causes the serious construction time
Potential safety hazard.
Brief description of the drawings
Fig. 1 is the utility model arrangement schematic diagram.
Mark is 1- water conservancy diversion hole outlets in figure, and 2- debris flow gullies, 3- dregs-blocking dams, 4- rows lead barricade, 5- export mouths, α-folder
Angle, β-angle.
Specific embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model includes the dregs-blocking dam 3 being arranged between water conservancy diversion hole outlet 1 and debris flow gully 2, institute
State dregs-blocking dam 3 to be located in debris flow gully 2, the angle α of the upstream end of the length direction of dregs-blocking dam 3 and the bearing of trend of debris flow gully 2<
60°.One dregs-blocking dam 3 is arranged in the raceway groove of debris flow gully 2, the material resource in raceway groove can be consolidated, when generation bench scale mudstone
During stream, mud-rock flow of blocking can be played a part of, it is to avoid mud-rock flow enters the region of water conservancy diversion hole outlet 1, block outlet and influence water
The diversion tunnel discharge capacity of electrical engineering construction time.When there is medium-scale mud-rock flow, due to the axis of dregs-blocking dam 3 and debris flow gully
Angle α between 2 bearing of trends<60 °, will cause that mud-rock flow movement direction is directed away from the downstream of water conservancy diversion hole outlet 1, maximum limit
Influence of the mitigation of degree to diversion tunnel discharge capacity.
The dregs-blocking dam 3 is gravity dam structure, and osculum is provided with the middle part of dam body.Gravity dam construction pedestals are wider, have
Very strong blocking capability, it is to discharge the ditch-water in debris flow gully 2 to set osculum, it is to avoid because etch causes landslide,
In the event of mud-rock flow, it is also possible to discharge the ponding in mud as early as possible, be easy to subsequent treatment.
Further, the dam body of the dregs-blocking dam 3 is highly 8~15m, and the gradient of osculum is 1%~4%.Dregs-blocking dam 3
Specific height should be set according to the concrete condition of debris flow gully 2, and the dam stability of 8~15m is good, also be easier construction, row
Water hole is slightly slanted downwards, it is ensured that the patency of draining, and high concentration of sediment will not be taken away again, causes draining hole plug.
In order to stop more massive mud-rock flow, the row of being additionally provided with leads barricade between the dregs-blocking dam 3 and water conservancy diversion hole outlet 1
4, row leads barricade 4 higher than dregs-blocking dam 3.When there is fairly large mud-rock flow, the mud-rock flow for partly failing to be guided by dregs-blocking dam 3 will
From the top overflow of dregs-blocking dam 3 and mistake, the direction that barricade 4 changes mud-rock flow movement is led by row, it is to avoid it is to the side of water conservancy diversion hole outlet 1
To flowing.
Specifically, the row leads barricade 4 for pH-static method, row lead the export mouth 5 of barricade 4 from water conservancy diversion hole outlet 1 away from
From more than 150m, row leads the height of barricade 4 than more than the 5m high of dregs-blocking dam 3.The enough mud-rock flows of distance of 150m bypass water conservancy diversion hole outlet 1
To river course downstream flow.
Further, it is the L-type to river course updrift side bending that the row leads barricade 4, and broken line angle is β, wherein 90 °<β
<135°.Row is led into barricade 4 and is arranged to bending-type, buffering and guiding function can be mainly played to silt flow, make mud-rock flow
Slowly stop in flow process, alluvial is led in barricade in row, even if being also unlikely to impact from export mouth discharge causes greatly very much it
Its bad influence.
The utility model is designed by multiplet, can successfully manage the mud-rock flow of various scales, and mud-rock flow stops and draws
Lead and work well, it is to avoid mud-rock flow to diversion tunnel outlet obstruction causes serious construction time potential safety hazard, with good
Practicality and application prospect.
Claims (6)
1. the drainage structure for debris flow of diversion tunnel outlet obstruction is prevented, including is arranged on water conservancy diversion hole outlet (1) and debris flow gully (2)
Between dregs-blocking dam (3), it is characterized in that：The dregs-blocking dam (3) in the debris flow gully (2), dregs-blocking dam (3) length direction it is upper
The angle α of the bearing of trend of trip end and debris flow gully (2)<60°.
2. the drainage structure for debris flow of diversion tunnel outlet obstruction is prevented as claimed in claim 1, it is characterized in that：The dregs-blocking dam
(3) it is gravity dam structure, osculum is provided with the middle part of dam body.
3. the drainage structure for debris flow of diversion tunnel outlet obstruction is prevented as claimed in claim 2, it is characterized in that：The dregs-blocking dam
(3) dam body is highly 8~15m, and the gradient of osculum is 1%~4%.
4. the drainage structure for debris flow for preventing diversion tunnel outlet obstruction as described in claim 1,2 or 3, it is characterized in that：It is described
The row of being additionally provided with leads barricade (4) between dregs-blocking dam (3) and water conservancy diversion hole outlet (1), and row leads barricade (4) higher than dregs-blocking dam (3).
5. the drainage structure for debris flow of diversion tunnel outlet obstruction is prevented as claimed in claim 4, it is characterized in that：The row leads gear
Wall (4) is pH-static method, and the export mouth (5) that row leads barricade (4) is more than 150m with a distance from water conservancy diversion hole outlet (1), and row leads gear
Wall (4) is highly than dregs-blocking dam (3) more than 5m high.
6. the drainage structure for debris flow of diversion tunnel outlet obstruction is prevented as claimed in claim 5, it is characterized in that：The row leads gear
Wall (4) is the L-type to river course updrift side bending, and broken line angle is β, wherein 90 °<β<135°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621262619.0U CN206204891U (en) | 2016-11-23 | 2016-11-23 | Prevent the drainage structure for debris flow of diversion tunnel outlet obstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621262619.0U CN206204891U (en) | 2016-11-23 | 2016-11-23 | Prevent the drainage structure for debris flow of diversion tunnel outlet obstruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206204891U true CN206204891U (en) | 2017-05-31 |
Family
ID=58749004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621262619.0U Active CN206204891U (en) | 2016-11-23 | 2016-11-23 | Prevent the drainage structure for debris flow of diversion tunnel outlet obstruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206204891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982307A (en) * | 2021-11-04 | 2022-01-28 | 中国电建集团成都勘测设计研究院有限公司 | Post-disaster debris flow repair method for ground power generation plant |
-
2016
- 2016-11-23 CN CN201621262619.0U patent/CN206204891U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982307A (en) * | 2021-11-04 | 2022-01-28 | 中国电建集团成都勘测设计研究院有限公司 | Post-disaster debris flow repair method for ground power generation plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103510493B (en) | Low overflow dam cave depot type hydropower station | |
| CN101476305B (en) | Mud-stone flow discharge guiding groove based on step anti-flushing notched sill group and use thereof | |
| Boes et al. | Sediment bypass tunnels to mitigate reservoir sedimentation and restore sediment continuity | |
| CN103088791B (en) | Energy dissipation type debris flow check dam combined draining and guiding and blocking | |
| WO2014201742A1 (en) | Debris flow drainage trough planning and designing method and application thereof | |
| CN101851906A (en) | Debris flow guiding slot based on step anti-erosion toothed sill group and application thereof | |
| CN104088250B (en) | Debris flow method based on debris flow formation pattern | |
| CN205171469U (en) | Mud -rock flow flow blocking dam scour protection dissipation structure | |
| CN106192871A (en) | Protection arrangement for debris flow gully | |
| CN102535384B (en) | In-trench water-stone separation siphoning-drainage debris flow control method | |
| CN101463593A (en) | Design method and use of transversal dentated sill embedded depth of foundation based on debris flow soft foundation energy dissipating | |
| CN103061327A (en) | Comprehensive water control technique for dump | |
| CN206204891U (en) | Prevent the drainage structure for debris flow of diversion tunnel outlet obstruction | |
| CN104264639A (en) | Underflow type stair stilling pool energy consumption system | |
| CN205954559U (en) | A ditch water treatment structure that is used for large -scale sediment field of blocking | |
| Boes et al. | Design, operation and morphological effects of bypass tunnels as a sediment routing technique | |
| CN206052635U (en) | For the protection arrangement of debris flow gully | |
| CN202214710U (en) | Overflowing-drainage integrated brake weir | |
| WO2011121603A1 (en) | Mild slope channel hydro power generation hydro power generation from subcriticalcanals | |
| CN102383401A (en) | Overflow water drainage integral type sluice weir | |
| CN215562326U (en) | Prevention and control system for blocking, shunting and water-stone separation of debris flow | |
| CN104963379A (en) | Water taking structure for mountainous area river course | |
| CN105421288A (en) | Large reservoir basin reservoir silt beach sand sluicing structure and construction method thereof | |
| CN104099908B (en) | Gravity type sand obstructing and guiding structure | |
| CN208717869U (en) | The diversion canal to sluice for big gradient, high flow rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |