CN106869090A - Dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method - Google Patents
Dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method Download PDFInfo
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- CN106869090A CN106869090A CN201710184693.8A CN201710184693A CN106869090A CN 106869090 A CN106869090 A CN 106869090A CN 201710184693 A CN201710184693 A CN 201710184693A CN 106869090 A CN106869090 A CN 106869090A
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- Prior art keywords
- bank
- gear
- dreg
- blocking board
- diversion tunnel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
- E02B8/023—Arresting devices for waterborne materials
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/06—Barriers therefor construed for applying processing agents or for collecting pollutants, e.g. absorbent
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Revetment (AREA)
Abstract
The invention provides a kind of dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method, can in time deslagging slagging-off prevent rock ballast with shunting current enter hole in, it is ensured that tunnel discharge capacity.Dreg-blocking board sub-assembly provided by the present invention, is disposed in the porch of the diversion tunnel of river course side, it is characterised in that including：First gear bank, along streamflow direction arrangement；Connection bank, one end is connected with the upper end of first gear bank, and the other end extends in diversion tunnel, and is in the first angle with first gear bank；Second gear bank, upper end is connected with the other end for being connected bank, lower end extends towards the side wall of diversion tunnel, and be connected bank in the second angle, wherein, the first angle is the arbitrary value in the range of 30 ° ~ 60 °, and the second angle is the arbitrary value in the range of 85 ° ~ 95 °, seen along streamflow direction, first gear bank, connection bank and second gear bank surround a drainage gallery for gradually tapering up jointly.
Description
Technical field
The invention belongs to Hydraulic and Hydro-Power Engineering field, and in particular to a kind of dreg-blocking board sub-assembly and application dreg-blocking board combination
The method that part carries out debris retaining deslagging to diversion tunnel.
Background technology
During the shunting that sluices, the impurity such as silt, rock ballast in upper river is often with shunting for Construction diversion tunnel
Current enter in diversion tunnel or alluvial is at hole, the excessively stream energy at the rock ballast reduction diversion tunnel hole deposited at hole
Power, the erosion attack of diversion tunnel barrel and base plate can be then aggravated into the rock ballast in hole, reduce the service life of diversion tunnel.
Existing deslagging mode is to clear up rock ballast in the hole of hole using modes such as artificial mechanisms in the tunnel inoperative period mostly, between causing engineering
Expense increase is connect, economy is poor；Or single dreg-blocking board debris retaining is arranged at hole, debris retaining deslagging effect and structure are overall steady
It is qualitative poor.
The content of the invention
The present invention is carried out to solve above-mentioned problem, it is therefore intended that provide a kind of dreg-blocking board sub-assembly and water conservancy diversion tunnel
Hole debris retaining Slagoff method, can in time deslagging with reduce rock ballast deposited at diversion tunnel degree, prevent rock ballast with shunting water flow into
Enter in hole, to ensureing tunnel discharge capacity, avoiding barrel erosion attack, reach and safeguard diversion tunnel safe operation, save work
The purpose of Cheng Chengben.
The present invention to achieve these goals, employs following scheme.
<Dreg-blocking board sub-assembly>
The present invention provides a kind of dreg-blocking board sub-assembly, is disposed in the porch of the diversion tunnel of river course side, is used for
Solid particulate matter to being carried under one's arms in the shunting current in inflow diversion tunnel is stopped and is excluded, it is characterised in that including：
First gear bank, along streamflow direction arrangement；Connection bank, one end is connected with the upper end of first gear bank, and the other end is to water conservancy diversion tunnel
Extend in hole, and be in the first angle with first gear bank；Second gear bank, upper end be connected bank the other end be connected, lower end towards
The side wall of diversion tunnel extends, and is in the second angle with bank is connected, wherein, the first angle is any in the range of 30 °~60 °
Value, the second angle is the arbitrary value in the range of 85 °~95 °, is seen along streamflow direction, first gear bank, connection bank and the
Two gear banks surround a drainage gallery for gradually tapering up jointly.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：First gear bank is in streamflow side
Upward section is shaped as triangle, and being shaped as section of the second gear bank on streamflow direction be trapezoidal.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：The maximum bank of second gear bank is a height of
First gear bank maximum high 2 times of bank.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：Seen along streamflow direction, the
The bank of two gear banks is high gradually to be reduced, high 2 times of a height of minimum bank of maximum bank of second gear bank.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：The maximum bank of first gear bank is a height of
The 1/15~1/10 of diversion tunnel height.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：First gear bank and second gear bank
Bank is long equal, is wide 1~1.5 times in diversion tunnel hole.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：Connect a length of water conservancy diversion tunnel of bank of bank
The 1/3~1/2 of height of holes.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：Second angle is 90 °.
Dreg-blocking board sub-assembly involved in the present invention, can also have the feature that：First gear bank is perpendicular to river course
Section in water (flow) direction be shaped as rectangle and it is trapezoidal in any one, second gear bank is on streamflow direction
Section be shaped as rectangle and it is trapezoidal in any one.
<Diversion tunnel debris retaining Slagoff method>
The present invention provides a kind of diversion tunnel debris retaining Slagoff method, it is characterised in that：The bottom surface for flowing tunnel porch is set
The slope that ecto-entad gradually increases is set to, and will<Dreg-blocking board sub-assembly>Described in dreg-blocking board sub-assembly be arranged in slope
On, wherein, the gradient on slope is 1:8~1:In the range of 10.
The effect of invention and effect
Dreg-blocking board sub-assembly of the invention, because first gear bank is, along streamflow direction arrangement, to connect bank
One end is connected with the upper end of first gear bank, and the other end extends in diversion tunnel, and is in 30 °~60 ° angles with first gear bank, and
And, the upper end of second gear bank is connected with the other end for being connected bank, and lower end extends towards the side wall of diversion tunnel, and is in bank is connected
85 °~95 ° angles, so that first gear bank, connection bank and second gear bank define a drainage gallery for gradually tapering up,
Intercepted on the outside of first gear bank this makes it possible to by upstream bulk rock ballast, bulk rock ballast is combined in self gravitation and the narrow current of beam
Rolled under effect into original bed, and with main flow pour downstream river course, and fine grained rock ballast is then intercepted in drainage gallery, is reached
To the effect of classification debris retaining, further with contraction principle, flow rate of water flow is let out under can gradually increasing, in drainage gallery
Microlith slag pours downstream river course in time by breach, so as to effectively carried under one's arms in the shunting current in diversion tunnel to flowing into
Solid particulate matter stopped and excluded, and improves the pushing off the slag deslagging ability during diversion tunnel runs, and reduces later stage tunnel
Manually, the program and expense of mechanical scarfing cinder, while avoid barrel erosion attack, reached the safe operation of maintenance diversion tunnel,
Save the purpose of engineering cost.Also, first gear bank, connection bank and second gear bank this three bank are sequentially connected, by blocking stone dam
Wedge action between the heap masonry of junction ensure that the spatial stability of structure.
Brief description of the drawings
Fig. 1 is that the spoiler group that is related in the embodiment of the present invention and the position relationship between diversion tunnel and river course are illustrated
Figure；
Fig. 2 is the structural representation of the dreg-blocking board sub-assembly being related in the embodiment of the present invention；
Fig. 3 is the sectional view of the dreg-blocking board sub-assembly being related in the embodiment of the present invention, wherein, (a) is cutting for first gear bank
Face figure, (b) is the sectional view for connecting bank, and (c) is the sectional view of second gear bank；
Fig. 4 is the sectional schematic diagram at tunnel import of the dreg-blocking board sub-assembly being related in the embodiment of the present invention；And
Fig. 5 is the pushing off the slag deslagging principle schematic of the dreg-blocking board sub-assembly being related in the embodiment of the present invention.
Specific embodiment
Detailed is made to dreg-blocking board sub-assembly involved in the present invention and diversion tunnel debris retaining Slagoff method referring to the drawings
Illustrate.The part not elaborated in following examples belongs to prior art.
<Embodiment>
As shown in figure 1, dreg-blocking board sub-assembly 10 is disposed in the porch in the water conservancy diversion tunnel B holes of river course A sides, for right
The solid particulate matter carried under one's arms in the shunting current in diversion tunnel B is flowed into be stopped and excluded.As illustrated in fig. 1 and 2, pushing off the slag
Bank sub-assembly 10 includes first gear bank 11, connection bank 12 and second gear bank 13.
First gear bank 11 is arranged along the water (flow) direction of river course A, parallel with water (flow) direction.It is perpendicular to river course A water
That flows the section on direction is shaped as rectangle or trapezoidal.In addition, as shown in Fig. 3 (a), first gear bank 11 is along river course A current
Section on direction is shaped as triangle, triangle a length of degree L on one side.The 1/ of its a height of diversion tunnel B height of maximum bank
15~1/10.
The one end for connecting bank 12 is connected with the upper end of first gear bank 11, and the other end extends to inside diversion tunnel B, and with
First gear bank 11 is in the first angle.The 1/3~1/2 of a length of diversion tunnel B height of bank of bank 12 is connected, it is along river course A water
That flows the section on direction is shaped as rectangle or trapezoidal.In addition, as shown in Fig. 3 (b), connection bank 12 is perpendicular to river course A current
The trapezoidal also, trapezoidal edge lengths long that are shaped as in the section on direction are 2L, and bond length is L.
The upper end of second gear bank 13 is connected with the other end for being connected bank 12, and lower end extends towards the side wall of diversion tunnel B, and
It is in the second angle with bank 12 is connected, the second angle can be 85 °~95 °, be 90 ° in the present embodiment.Second gear bank 13 along
The shape in the section of (diversion tunnel B shunts direction with river course A water (flow) directions near normal) in water (flow) direction in diversion tunnel B
It is rectangle or trapezoidal.In addition, as shown in Fig. 3 (c), second gear bank 13 is in the section on diversion tunnel B shuntings direction
Trapezoidal also, trapezoidal edge lengths long are shaped as 2L, bond length is L.The a height of first gear bank of maximum bank of second gear bank 13
High 2 times of 11 maximum banks.In the present embodiment, second gear bank 13 is long with the bank of first gear bank 11 equal, and it is wide to be 1~1.5 times of hole,
And their top and Bottom Altitude arrangement are on a declining curve along water (flow) direction.
Seen along river course A water (flow) directions, first gear bank 11, connection bank 12 and second gear bank 13 surround one gradually jointly
The drainage gallery of contraction, the drainage gallery has an open C.In the case of first gear Kan11Kan determinations long, drainage gallery
Deslagging ability receive open C and the first angle joint effect, the first angle is smaller, and the narrow degree of beam is bigger, and current gradient is bigger, but
Open C is just smaller, crosses the top of the slag and accumulates just small, crosses slag ability naturally just small；Conversely, just not having the narrow water of beam if the first angle is excessive
The effect of stream and increase flow rate of water flow gradient, therefore, the first angle is unsuitable excessive or too small, is advisable with 30~60 °.
It is to the method that diversion tunnel B carries out debris retaining deslagging using the dreg-blocking board sub-assembly 10 in the present embodiment：
First, dreg-blocking board sub-assembly is determined according to the geological state at dam site, construction site layout, conditions of transportation etc.
Material is used in 10 fill；
Then, determine that dreg-blocking board 1 is long with the bank of dreg-blocking board 2 according to the orographic condition before diversion tunnel B throat widths and hole,
Generally can be identified as 1~1.5 times of hole wide；
Then, the hole high condition according to diversion tunnel determines the elevation arrangement of first gear bank 11 and second gear bank 13, the
The maximum bank of one gear bank 11 is high to be typically arranged as the 1/15~1/10 of diversion tunnel B height, and the maximum bank of second gear bank 13 is a height of
2 times of first gear bank 11, the bank of connection bank 12 is long to be arranged as the 1/3~1/2 of diversion tunnel B height；Preferably, first gear bank
11 and second gear bank 13 maximum bank is high is generally positioned to be 1m and 2m.
Then, the top width for determining first gear bank 11, connection bank 12 and second gear bank 13 is calculated according to homeostasis condition
And the both sides gradient (when section is trapezoidal)；
Finally, the bottom surface of diversion tunnel B porch is arranged to the slope D that ecto-entad gradually increases, by dreg-blocking board group
Component 10 is arranged on the D of slope by following space structure：First gear bank 11 and river course A water (flow) direction parallel arrangements, connect bank 12
Arrangement is mutually perpendicular to second gear bank 13, first gear bank 11 is 30~60 ° with the angle of intersection of second gear bank 13.
As shown in figure 4, in the present embodiment, the gradient on slope is 1:8~1:In the range of 10.
As shown in figure 5, when the entrance of flow direction diversion tunnel B is shunted, due to first gear bank 11 and second gear bank 13
Between the slope D gradients can increase the moving resistance of rock ballast, therefore upstream bulk rock ballast can be effectively intercepted in first gear
The outside of bank 11, makes bulk rock ballast be rolled into original bed under self gravitation and the narrow current synergy of beam, and poured down with main flow
In trip river course A, and middle fine grained rock ballast is then intercepted in drainage gallery, reaches the effect of classification debris retaining.
Further with contraction principle, flow rate of water flow is let out under can gradually increasing, it is thin in intercepting in drainage gallery
Rock ballast pours downstream river course A in time by open C, so that effectively to being carried under one's arms in the shunting current in inflow diversion tunnel B
Solid particulate matter stopped and excluded.
Also, first gear bank 11, connection bank 12 and the bank of second gear bank 13 3 are sequentially connected, by blocking stone dam junction heap
Wedge action between masonry ensure that the spatial stability of structure.
To sum up, this programme is by designing simple and effective pushing off the slag structure type, the gear during lifting diversion tunnel operation
Slag deslagging ability, reduces the program and expense of artificial, the mechanical scarfing cinder of later stage tunnel.
Above example is only the illustration done to technical solution of the present invention.Dreg-blocking board group involved in the present invention
Component and diversion tunnel debris retaining Slagoff method are not merely defined in structure described in the embodiment above, but with right
It is required that limited range is defined.Any modification that those skilled in the art of the invention are made on the basis of the embodiment or
Supplement or equivalence replacement, all in scope of the present invention.
Claims (10)
1. a kind of dreg-blocking board sub-assembly, is disposed in the porch of the diversion tunnel of river course side, for being led described in inflow
The solid particulate matter carried under one's arms in shunting current in stream tunnel is stopped and is excluded, it is characterised in that including：
First gear bank, along streamflow direction arrangement；
Connection bank, one end is connected with the upper end of the first gear bank, the other end to extension in the diversion tunnel, and with it is described
First gear bank is in the first angle；
Second gear bank, upper end is connected with the other end of the connection bank, and lower end extends towards the side wall of the diversion tunnel,
And with the connection bank in the second angle,
Wherein, first angle is the arbitrary value in the range of 30 °~60 °,
Second angle is the arbitrary value in the range of 85 °~95 °,
Seen along the streamflow direction, the first gear bank, the connection bank and the second gear bank surround one jointly
The individual drainage gallery for gradually tapering up.
2. dreg-blocking board sub-assembly according to claim 1, it is characterised in that：
Wherein, section of the first gear bank on the streamflow direction is shaped as triangle,
Being shaped as section of the second gear bank on the streamflow direction is trapezoidal.
3. dreg-blocking board sub-assembly according to claim 2, it is characterised in that：
Wherein, high 2 times of a height of first gear bank maximum bank of the maximum bank of the second gear bank.
4. dreg-blocking board sub-assembly according to claim 2, it is characterised in that：
Wherein, seen along the streamflow direction, the bank of the second gear bank is high gradually to be reduced, the maximum of the second gear bank
High 2 times of a height of minimum bank of bank.
5. dreg-blocking board sub-assembly according to claim 1 and 2, it is characterised in that：
Wherein, the 1/15~1/10 of a height of diversion tunnel height of the maximum bank of the first gear bank.
6. dreg-blocking board sub-assembly according to claim 1, it is characterised in that：
Wherein, the bank of the first gear bank and the second gear bank is long equal, is wide 1~1.5 times in diversion tunnel hole.
7. dreg-blocking board sub-assembly according to claim 1, it is characterised in that：
Wherein, the 1/3~1/2 of a length of diversion tunnel height of bank of the connection bank.
8. dreg-blocking board sub-assembly according to claim 1, it is characterised in that：
Wherein, second angle is 90 °.
9. dreg-blocking board sub-assembly according to claim 1, it is characterised in that：
Wherein, the first gear bank the section on the streamflow direction be shaped as rectangle and it is trapezoidal in appoint
Meaning is a kind of,
The second gear bank the section on the streamflow direction be shaped as rectangle and it is trapezoidal in it is any one
Kind.
10. a kind of diversion tunnel debris retaining Slagoff method, it is characterised in that：
The bottom surface for flowing tunnel porch is arranged to the slope that ecto-entad gradually increases, and will be any one in claim 1 to 9
Dreg-blocking board sub-assembly described in is arranged on the slope,
Wherein, the gradient on the slope is 1:8~1:In the range of 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184693.8A CN106869090B (en) | 2017-03-24 | 2017-03-24 | Dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184693.8A CN106869090B (en) | 2017-03-24 | 2017-03-24 | Dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method |
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| Publication Number | Publication Date |
|---|---|
| CN106869090A true CN106869090A (en) | 2017-06-20 |
| CN106869090B CN106869090B (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710184693.8A Expired - Fee Related CN106869090B (en) | 2017-03-24 | 2017-03-24 | Dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951530A (en) * | 2018-09-30 | 2018-12-07 | 安徽理工大学 | It is a kind of navigation diversion works except spiral shell design |
| CN109778798A (en) * | 2019-03-12 | 2019-05-21 | 黄河勘测规划设计研究院有限公司 | Multi-stage porous pipe weir shunts and warps method |
| CN110258468A (en) * | 2019-07-05 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Sand structure is blocked in hydraulic tunnel |
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| CN203977377U (en) * | 2014-07-31 | 2014-12-03 | 中国电建集团成都勘测设计研究院有限公司 | Sediment trapping training for sediment structure |
| CN104712010A (en) * | 2015-03-25 | 2015-06-17 | 广东省水利水电科学研究院 | Water diversion and silt prevention system for convex bank |
| CN205839715U (en) * | 2016-07-27 | 2016-12-28 | 四川大川电力有限公司 | A kind of sewage blocking device for power station intake |
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| CN201447689U (en) * | 2009-06-26 | 2010-05-05 | 广东省电力设计研究院 | Water drawing device for mountain streams with high sand content and low flow |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951530A (en) * | 2018-09-30 | 2018-12-07 | 安徽理工大学 | It is a kind of navigation diversion works except spiral shell design |
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| CN109778798A (en) * | 2019-03-12 | 2019-05-21 | 黄河勘测规划设计研究院有限公司 | Multi-stage porous pipe weir shunts and warps method |
| CN110258468A (en) * | 2019-07-05 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Sand structure is blocked in hydraulic tunnel |
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| CN106869090B (en) | 2019-01-18 |
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Granted publication date: 20190118 Termination date: 20210324 |