CN106869090B - 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
- Publication number
- CN106869090B CN106869090B CN201710184693.8A CN201710184693A CN106869090B CN 106869090 B CN106869090 B CN 106869090B CN 201710184693 A CN201710184693 A CN 201710184693A CN 106869090 B CN106869090 B CN 106869090B
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- Prior art keywords
- bank
- gear
- dreg
- diversion tunnel
- blocking board
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Classifications
-
- 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 present invention provides a kind of dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method, can deslagging slagging-off in time prevent rock ballast from entering in hole with water flow is shunted, guarantee tunnel discharge capacity.Dreg-blocking board sub-assembly provided by the present invention, is disposed in the inlet of the diversion tunnel of river side characterized by comprising first gear bank is arranged along streamflow direction；Bank is connected, one end is connected with the upper end of first gear bank, and the other end extends into diversion tunnel, and is in the first angle with first gear bank；Second gear bank, upper end is connected with the other end for connecting bank, the side wall of lower end towards diversion tunnel extends, and with connect bank in the second angle, wherein, the first angle is the arbitrary value within the scope of 30 ° ~ 60 °, and the second angle is the arbitrary value within the scope of 85 ° ~ 95 °, it is seen along streamflow direction, first gear bank, connection bank and second gear bank surround the drainage gallery gradually tapered up jointly.
Description
Technical field
The invention belongs to hydraulic and hydroelectric engineering fields, and in particular to a kind of dreg-blocking board sub-assembly and the application dreg-blocking board combine
The method that part carries out debris retaining deslagging to diversion tunnel.
Background technique
Construction diversion tunnel is during the shunting that sluices, and the impurity such as silt, rock ballast in upper river are often with shunting
Water flow enters in diversion tunnel or siltation is at hole, and the rock ballast to deposit at hole reduces the overcurrent energy at diversion tunnel hole
Power can then aggravate the erosion attack of diversion tunnel barrel and bottom plate into the rock ballast in hole, reduce the service life of diversion tunnel.
Existing deslagging mode is mostly that rock ballast in the hole of hole is cleared up in the way of artificial mechanism etc. in the tunnel inoperative period, is caused between 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 integrally steady
It is qualitative poor.
Summary of the invention
The present invention is to carry out in order to solve the above problems, and it is an object of the present invention to provide a kind of dreg-blocking board sub-assembly and water conservancy diversion tunnel
Hole debris retaining Slagoff method, can in time deslagging deposit with to reduce rock ballast at diversion tunnel degree, prevent rock ballast from flowing into shunting water
Enter in hole, to guarantee tunnel discharge capacity, avoid barrel erosion attack, reaches the safe operation of maintenance diversion tunnel, saves work
The purpose of Cheng Chengben.
The present invention to achieve the goals above, uses following scheme.
<dreg-blocking board sub-assembly>
The present invention provides a kind of dreg-blocking board sub-assembly, is disposed in the inlet of the diversion tunnel of river side, is used for
The solid particulate matter carried under one's arms in the shunting water flow flowed into diversion tunnel is stopped and is excluded characterized by comprising
First gear bank is arranged along streamflow direction；Bank is connected, 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 is in the first angle with first gear bank；Second gear bank, upper end with connect 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 connect, wherein the first angle is any within the scope of 30 °~60 °
Value, the second angle is the arbitrary value within the scope of 85 °~95 °, is seen along streamflow direction, first gear bank, connection bank and the
Second gear bank surrounds the drainage gallery gradually tapered up jointly.
Dreg-blocking board sub-assembly according to the present invention can also have the following features: first gear bank in streamflow side
The shape in upward section is triangle, and the shape in section of the second gear bank on streamflow direction is trapezoidal.
Dreg-blocking board sub-assembly according to the present invention, the maximum bank that can also have the following features: second gear bank are a height of
High 2 times of first gear bank maximum bank.
Dreg-blocking board sub-assembly according to the present invention, can also have the following features: and see along streamflow direction, the
The bank height of second gear bank gradually decreases, high 2 times of a height of minimum bank of the maximum bank of second gear bank.
Dreg-blocking board sub-assembly according to the present invention, the maximum bank that can also have the following features: first gear bank are a height of
The 1/15~1/10 of diversion tunnel height.
Dreg-blocking board sub-assembly according to the present invention can also have the following features: first gear bank and second gear bank
Bank length is equal, is wide 1~1.5 times in diversion tunnel hole.
Dreg-blocking board sub-assembly according to the present invention can also have the following features: a length of water conservancy diversion tunnel of bank of connection bank
The 1/3~1/2 of height of holes.
Dreg-blocking board sub-assembly according to the present invention, can also have the following features: the second angle is 90 °.
Dreg-blocking board sub-assembly according to the present invention can also have the following features: first gear bank perpendicular to river
The shape in the section in water (flow) direction be rectangle and it is trapezoidal in any one, second gear bank is on perpendicular to streamflow direction
Section shape be 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: by the bottom surface of diversion tunnel inlet
It is arranged to the slope that ecto-entad gradually increases, and dreg-blocking board sub-assembly described in<dreg-blocking board sub-assembly>is arranged in tiltedly
On slope, wherein the gradient on slope is within the scope of 1:8~1:10.
The action and effect of invention
Dreg-blocking board sub-assembly according to the present invention connects bank since first gear bank is arranged along streamflow direction
One end is connected with the upper end of first gear bank, and the other end extends into 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 connecting bank, the side wall of lower end towards diversion tunnel extends, and is in bank is connect
85 °~95 ° angles, so that first gear bank, connection bank and second gear bank define the drainage gallery gradually tapered up,
This makes it possible to intercept upstream bulk rock ballast on the outside of first gear bank, make bulk rock ballast in self gravity and the narrow water flow joint of beam
It is rolled under effect into original bed, and poured in downstream river course with mainstream, and fine grained rock ballast is then intercepted in drainage gallery, is reached
To the effect of classification debris retaining, contraction principle is further utilized, can be gradually increased down and let out flow rate of water flow, in drainage gallery
Microlith slag pours downstream river course by notch in time, thus effectively to being carried under one's arms in the shunting water flow flowed into diversion tunnel
Solid particulate matter is stopped and is excluded, and is improved the pushing off the slag deslagging ability during diversion tunnel operation, is reduced later period tunnel
Manually, the program and expense of mechanical scarfing cinder, while avoiding 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.
Detailed description of the invention
Fig. 1 is the positional relationship signal between flow-disturbing board group and diversion tunnel and river involved in the embodiment of the present invention
Figure；
Fig. 2 is the structural schematic diagram of dreg-blocking board sub-assembly involved in the embodiment of the present invention；
Fig. 3 is the sectional view of dreg-blocking board sub-assembly involved in the embodiment of the present invention, wherein (a) is cutting for first gear bank
Face figure, is (b) sectional view for connecting bank, is (c) sectional view of second gear bank；
Fig. 4 is the sectional schematic diagram in tunnel entrance of dreg-blocking board sub-assembly involved in the embodiment of the present invention；And
Fig. 5 is the pushing off the slag deslagging schematic illustration of dreg-blocking board sub-assembly involved in the embodiment of the present invention.
Specific embodiment
Dreg-blocking board sub-assembly according to the present invention and diversion tunnel debris retaining Slagoff method are made referring to the drawings detailed
It illustrates.The part not elaborated in following embodiment belongs to the prior art.
<embodiment>
As shown in Figure 1, dreg-blocking board sub-assembly 10 is disposed in the inlet in the hole water conservancy diversion tunnel B of river A side, for pair
The solid particulate matter carried under one's arms in the shunting water flow flowed into diversion tunnel B is stopped and is 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 A, parallel with water (flow) direction.It is perpendicular to river A water
The shape for flowing the section on direction is rectangle or trapezoidal.In addition, first gear bank 11 is along river A water flow as shown in Fig. 3 (a)
The shape in the section on direction is triangle, a length of degree L in triangle one side.The 1/ of a height of diversion tunnel B height of its maximum bank
15~1/10.
Connection bank 12 one end be connected with the upper end of first gear bank 11, the other end to diversion tunnel B internal stretch, 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 A water
The shape for flowing the section on direction is rectangle or trapezoidal.In addition, connecting bank 12 perpendicular to river A water flow as shown in Fig. 3 (b)
The shape in the section on direction is that trapezoidal also, trapezoidal long side length is 2L, bond length L.
The upper end of second gear bank 13 is connected with the other end for connecting bank 12, and the side wall of lower end towards diversion tunnel B extend, and
It is in the second angle with bank 12 is connect, it is 90 ° in the present embodiment that the second angle, which can be 85 °~95 °,.Second gear bank 13 along
The shape in the section of (diversion tunnel B shunts direction and river A water (flow) direction near normal) in water (flow) direction in diversion tunnel B
For rectangle or trapezoidal.In addition, second gear bank 13 is shunting the section on direction perpendicular to diversion tunnel B as shown in Fig. 3 (c)
Shape is that trapezoidal also, trapezoidal long side length is 2L, bond length L.The a height of first gear bank of the maximum bank of second gear bank 13
High 2 times of 11 maximum banks.In the present embodiment, it is that 1~1.5 times of hole is wide that second gear bank 13 is equal with the bank of first gear bank 11 length,
And their top and Bottom Altitude arrangement are on a declining curve along water (flow) direction.
It is seen along river A water (flow) direction, first gear bank 11, connection bank 12 and second gear bank 13 surround one gradually jointly
The drainage gallery of contraction, the drainage gallery have an open C.In the case where first gear Kan11Kan long is determined, drainage gallery
Deslagging ability by 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, cross the top of the slag product just it is small, cross slag ability naturally just it is small；Conversely, just not having the narrow water of beam if the first angle is excessive
Stream and the effect for increasing flow rate of water flow gradient, therefore, the first angle should not be too large or too small, is advisable with 30~60 °.
The method that debris retaining deslagging is carried out to diversion tunnel B using the dreg-blocking board sub-assembly 10 in the present embodiment are as follows:
Firstly, determining dreg-blocking board sub-assembly according to geological state, construction site layout, the conditions of transportation etc. at dam site
Material is used in 10 fill；
Then, determine that dreg-blocking board 1 and the bank of dreg-blocking board 2 are long according to the orographic condition before diversion tunnel B throat width and hole,
It is wide usually to can be identified as 1~1.5 times of hole；
Then, the elevation arrangement of first gear bank 11 and second gear bank 13 is determined according to the hole high condition of diversion tunnel, the
The maximum bank of one gear bank 11 is high to be generally 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
The bank length of 2 times of first gear bank 11, connection bank 12 is arranged as the 1/3~1/2 of diversion tunnel B height；Preferably, first gear bank
11 and the maximum bank height of second gear bank 13 be 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 two sides gradient (when section is trapezoidal)；
Finally, the bottom surface of the inlet diversion tunnel B 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 A water (flow) direction are arranged in parallel, and connect bank 12
It is mutually perpendicular to arrange with second gear bank 13, first gear bank 11 and 13 angle of intersection of second gear bank are 30~60 °.
As shown in figure 4, the gradient on slope is within the scope of 1:8~1:10 in the present embodiment.
As shown in figure 5, when shunting the entrance of flow direction diversion tunnel B, due to first gear bank 11 and second gear bank 13
Between the slope D gradient can increase the moving resistance of rock ballast, therefore upstream bulk rock ballast can effectively be intercepted in first gear
11 outside of bank, makes bulk rock ballast roll under self gravity and the narrow water flow synergy of beam into original bed, and pour down with mainstream
It swims in river A, and middle fine grained rock ballast is then intercepted in drainage gallery, achievees the effect that be classified debris retaining.
Contraction principle is further utilized, can be gradually increased down and let out flow rate of water flow, will be intercepted thin in drainage gallery
Rock ballast pours downstream river course A by open C in time, thus effectively to being carried under one's arms in the shunting water flow flowed into diversion tunnel B
Solid particulate matter stopped and excluded.
Also, first gear bank 11, connection bank 12 and 13 3 bank of second gear bank 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 promotes the gear during diversion tunnel operation by designing simple and effective pushing off the slag structure type
Slag deslagging ability reduces the program and expense of artificial, the mechanical scarfing cinder of later period tunnel.
Above embodiments are only the illustration done to technical solution of the present invention.Dreg-blocking board group according to the present invention
Component and diversion tunnel debris retaining Slagoff method are not merely defined in described structure in the embodiment above, but with right
It is required that subject to limited range.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 inlet of the diversion tunnel of river side, for leading described in inflow
The solid particulate matter carried under one's arms in shunting water flow in stream tunnel is stopped and is excluded characterized by comprising
First gear bank is arranged along streamflow direction；
Connect bank, one end is connected with the upper end of the first gear bank, and the other end extends into the diversion tunnel, and with it is described
First gear bank is in the first angle；
Second gear bank, upper end are connected with the other end of the connection bank, and the side wall of lower end towards the diversion tunnel extends,
And with the connection bank be in the second angle,
Wherein, first angle is the arbitrary value within the scope of 30 °~60 °,
Second angle is the arbitrary value within the scope of 85 °~95 °,
It is seen along the streamflow direction, the first gear bank, the connection bank and the second gear bank surround one jointly
A drainage gallery gradually tapered up.
2. dreg-blocking board sub-assembly according to claim 1, it is characterised in that:
Wherein, the shape in section of the first gear bank on the streamflow direction is triangle,
The shape in 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, it is seen along the streamflow direction, the bank height of the second gear bank gradually decreases, 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 or 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 second gear bank length is 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 appointing in the shape perpendicular to the section on the streamflow direction is rectangle and is trapezoidal
It anticipates one kind,
The second gear bank is any one in the shape perpendicular to the section on the streamflow direction is rectangle and is trapezoidal
Kind.
10. a kind of diversion tunnel debris retaining Slagoff method, it is characterised in that:
The bottom surface of diversion tunnel inlet is arranged to the slope that ecto-entad gradually increases, and will be any in claim 1 to 9
Dreg-blocking board sub-assembly described in one is arranged on the slope,
Wherein, the gradient on the slope is within the scope of 1:8~1:10.
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 CN106869090A (en) | 2017-06-20 |
| CN106869090B true CN106869090B (en) | 2019-01-18 |
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|---|---|---|---|
| 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951530B (en) * | 2018-09-30 | 2024-04-16 | 安徽理工大学 | Spiral shell removing project of navigation diversion project |
| CN109778798B (en) * | 2019-03-12 | 2020-08-18 | 黄河勘测规划设计研究院有限公司 | Multistage hole pipe weir flow dividing and silt discharging 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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| 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 |
| CN201598621U (en) * | 2009-12-23 | 2010-10-06 | 中国水电顾问集团华东勘测设计研究院 | Sand discharging and disturbing structure |
| CN103938592A (en) * | 2013-12-06 | 2014-07-23 | 四川大学 | Method for forming flow dividing holes in sand blocking ridges for flow stopping and dividing |
| 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 |
-
2017
- 2017-03-24 CN CN201710184693.8A patent/CN106869090B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201598621U (en) * | 2009-12-23 | 2010-10-06 | 中国水电顾问集团华东勘测设计研究院 | Sand discharging and disturbing structure |
| CN103938592A (en) * | 2013-12-06 | 2014-07-23 | 四川大学 | Method for forming flow dividing holes in sand blocking ridges for flow stopping and dividing |
| 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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| CN106869090A (en) | 2017-06-20 |
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