CN106638503A - Flip bucket used for high arch dam body flood discharge - Google Patents
Flip bucket used for high arch dam body flood discharge Download PDFInfo
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- CN106638503A CN106638503A CN201610860075.6A CN201610860075A CN106638503A CN 106638503 A CN106638503 A CN 106638503A CN 201610860075 A CN201610860075 A CN 201610860075A CN 106638503 A CN106638503 A CN 106638503A
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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
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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Abstract
The invention provides a flip bucket used for high arch dam body flood discharge. The flip bucket is composed of a base plate and a first side wall and a second side wall which are separately combined with the two sides of the base plate. The base plate is composed of an arc face section and a slope section connected with the arc face section in a tangent mode, wherein the arc face section and the slope section are upwards concave sequentially in the water flowing direction. The arc face section of the base plate comprises an arc water passing face and a first side and a second side which are located on the two sides of the arc water passing face and are both vertical planes. The slope section of the base plate comprises a tooth-shaped water passing face which is composed of a middle tooth and a first side tooth and a second side tooth which are of the same size and are symmetrically distributed on the two sides of the middle tooth. The roots of all the teeth are connected with the arc face section. The length of the middle tooth is large than that of the side teeth. By adoption of the flip bucket, water flow in an surface hole and middle holes of an arch dam can fall into different areas and disperse longitudinally, the water yield in a unit area is decreased, and therefore the natural plunge pool arrangement scheme that the slope instead of the bottom is protected and a second pass of dam is not arranged is achieved, project arrangement is simplified, and the project cost is saved.
Description
Technical field
The invention belongs to the flood-discharge energy-dissipating facility field in Hydraulic and Hydro-Power Engineering, and in particular to for induced joint flood relief through dam
Defrlector bucket.
Background technology
The characteristics of arch dam engineering in Southwestern China area has high head, narrow river valley and deeply covered layer, generally adopts
The arrangement of " cushion pool+Er Daoba ", needs to build cushion pool that is large-scale, involving great expense and two road dams.And for tool
There are the Narrow Valleys of deeply covered layer, because water cushion pool downstream is deep, the impact pressure that plunge pool floor bears is less, and energy dissipating area
Water body volume it is also sufficiently large, it is sufficient to let out energy under dissipation, if can reasonable Arrangement arch dam table hole and mesopore relative position, it is real
Existing table mesopore current subregion is overboard, longitudinal diffusion, reduces unit area and enters the water yield, is just capable of achieving " slope but no bottom protection, the roads of Bu She bis-
The natural water pool arrangement on dam ", so as to avoid building cushion pool that is large-scale, involving great expense and two road dams.But it is existing
Have the defrlector bucket for induced joint flood relief through dam be it is wide choose bank or slit, this kind of bank of choosing can not make during dam flood-discharge
Current are sufficiently spread in the air, and unit area enters the water yield greatly, and trajectory nappe is very big to the impulsive force of underwater bed, often
Cause the serious incision in riverbed, threaten the safety of dam geological foundation, needs build the cushion pool that involves great expense and two road dams to delay
Sweep away the impulsive force of the stream that sluices, it is impossible to realize the natural water pool arrangement on " slope but no bottom protection, the road dams of Bu She bis- ".
The content of the invention
Present invention aims to the deficiencies in the prior art, there is provided for the defrlector bucket of induced joint flood relief through dam,
So that arch dam table mesopore current subregion is overboard, longitudinal diffusion reduces unit area and enters the water yield, " the slope but no bottom protection, no so as to realizing
If the natural water pool arrangement in two roads dam ", simplify work arrangement, save engineering cost.
Defrlector bucket for induced joint flood relief through dam of the present invention, combines by base plate and respectively with base plate two sides
First abutment wall and the second abutment wall are constituted, the base plate along water (flow) direction successively by concave up arc surface section and with arc surface section phase
The bevel phase composition of linking is cut, the arc surface section of base plate includes circular arc flow surface and positioned at the first of circular arc flow surface both sides
Side and second side, the first side and second side are vertical plane, and the bevel phase of base plate includes dentation flow surface,
The dentation flow surface is by a middle tooth and is symmetrically distributed in middle tooth both sides and the first equivalently-sized side tooth and the second side tooth structure
Into the root of each tooth connects with arc surface section, and the length of middle tooth is more than the outer of the length of side tooth, the first side tooth and the second side tooth
Side is convex-shaped arc surface, and two convex-shaped arc surfaces first side respectively with arc surface section, second side are tangent, two convex arcs
The tangent line of face end points is identical with the angle of base plate center line, or the lateral surface of the first side tooth and the second side tooth is spill cambered surface,
Two spill cambered surfaces first side respectively with arc surface section, second side are tangent, the tangent line of two spill cambered surface end points and bottom
The angle of plate center line is identical；First abutment wall and the second abutment wall respectively with the first side and and first side of base plate arc surface section
Tangent convex-shaped arc surface or spill cambered surface, the second side of base plate arc surface section and the convex-shaped arc surface or recessed tangent with second side
Shape cambered surface matches, thus the first abutment wall and the second abutment wall are constituted and straight abutment wall and circle by straight abutment wall and arc surface abutment wall
Cambered surface abutment wall is tangent.
The above-mentioned defrlector bucket for induced joint flood relief through dam, the base plate arc surface section radius R1=L1/ β, in formula, L1
For the length of base plate arc surface section, β is the angle of the bevel phase with horizontal plane of base plate, and unit is radian, the base plate arc surface
The width B of section and length L of base plate arc surface section1Ratio be 1 ︰ (1～3), the bevel phase (1-2) of the base plate and horizontal plane
Angle β=5 °～35 °, the gradient i=tan β of the bevel phase (1-2) of base plate due to 1 °=π/180 radian, thus calculates base plate
Arc surface section radius R1When, can degree of carrying out and radian conversion.
The above-mentioned defrlector bucket for induced joint flood relief through dam, middle tine length L of bottom board inclined plane section2=(0.75～3.0)
B, the width B of middle root portion1=(0.3～0.70) B, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3,
L3︰ L2=(0.3～0.8) ︰ 1, the first side tooth of bottom board inclined plane section and the width of the second side root portion are B2=(B-B1)/2；
When the lateral surface of the first side tooth and the second side tooth is convex-shaped arc surface, the radius R of the convex-shaped arc surface2=L3/ sin α, when two
When the lateral surface of individual side tooth is spill cambered surface, the radius R of the spill cambered surface3=L3/sinα；It is above-mentioned it is various in, B is base plate
The width of arc surface section, α is the tangent line of two convex-shaped arc surface end points and the angle of base plate center line or two spill cambered surface end points
Tangent line and base plate center line angle, and α=3 °～25 °.
The above-mentioned defrlector bucket for induced joint flood relief through dam, width B the leading according to Practical Project of base plate arc surface section
Discharge orifice determines, therefore for a certain Practical Project, the width B of base plate arc surface section is known parameter.
The above-mentioned defrlector bucket for induced joint flood relief through dam, according to the first side tooth and the convex-concave of the lateral surface of the second side tooth
Shape can be divided into two kinds of contraction type defrlector bucket and diffusion type defrlector bucket:The lateral surface of the first side tooth and the second side tooth is convex
What the lateral surface for contraction type defrlector bucket, the first side tooth and the second side tooth of shape cambered surface was spill cambered surface chooses stream for diffusion type
Bucket lip.The current that contraction type defrlector bucket both sides tooth is chosen are concentrated to defrlector bucket axis, it is adaptable to the narrow landform in river course
Condition.Diffusion type defrlector bucket current choose backward left and right sides diffusion, it is adaptable to which there is the orographic condition of one fixed width in river course.
Contraction type of the present invention and diffusion type defrlector bucket, for during induced joint flood relief through dam energy dissipating, according to specific
Engineering specifications and the required each parameter for choosing stream effect setting defrlector bucket, open up pod apertures, in water conservancy diversion in induced joint dam body
Hole exits arrange defrlector bucket, make the arc surface base plate of defrlector bucket and the outlet tangential of pod apertures, form table hole or mesopore.
Compared with prior art, the invention has the advantages that：
1st, the current in contraction type defrlector bucket of the present invention, because delivery port is narrowed, current be picked after in the air
The narrow and overflow of thickness is formed, wherein, both sides tooth chooses the starting point elevation of current less than middle tooth, and both sides tooth is chosen high and chosen away from little
In middle tooth.With the interlaced collision of current that middle tooth is chosen while the current direction defrlector bucket axis that both sides tooth is chosen is concentrated,
Turbulent fluctuation is strong, and overflow vertically spreads with longitudinal stretching, in fan-shaped distribution on vertical plane, increases the contact surface with air
Product, is conducive to improving effect of energy dissipation.Overflow enters pool and tandem two long and narrow bandings is presented, wherein before enter water band (correspondence
In middle tooth) to be longer than after enter water band (corresponding to side tooth), which achieves that subregion is overboard, reduce unit area enters the water yield,
So as to avoid washing away for bank slope well, and mitigate the scour in riverbed, reach slope but no bottom protection under deeply covered layer orographic condition, no
If the purpose in two roads dam.
2nd, the current in diffusion type defrlector bucket of the present invention, due to outlet diffusion, current choose backward both sides diffusion,
Form wide and thin overflow in the air, both sides tooth choose it is high with choose the tooth in being respectively less than, there are two paddy and a peak in overflow face, increases
The big contact area with air, beneficial to aeration.Overflow enters pool in an arch banding, increases upstream face product, reduces list
What plane was accumulated enters the water yield, alleviates the scour to riverbed, improves for the applicability of narrow river topography, so as to avoid well
Washing away for bank slope, reaches slope but no bottom protection under deeply covered layer orographic condition, the purpose on the road dams of Bu She bis-.
3rd, defrlector bucket of the present invention, because the first abutment wall and the second abutment wall are by straight abutment wall and arc surface abutment wall group
Into and straight abutment wall is tangent with arc surface abutment wall, thus the flow-shape in defrlector bucket is more stable, and streamline is gentle.
4th, defrlector bucket of the present invention, contraction type is applied in combination with diffusion type defrlector bucket can be while realize longitudinal drawing
Open, left and right diffusion, the drop point that staggers, guiding erosion control, be advantageously implemented the natural water pool side on " slope but no bottom protection, the road dams of Bu She bis- "
Case, so as to avoid building cushion pool that is large-scale, involving great expense and two road dams, simplifies engineering and builds, and saves engineering cost.
5th, defrlector bucket structure of the present invention is relatively easy, and construction is convenient with maintenance.
Description of the drawings
Fig. 1 is the schematic perspective view of the first structure of the defrlector bucket for induced joint flood relief through dam of the present invention,
The defrlector bucket is contraction type defrlector bucket；
Fig. 2 is the front view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
The schematic diagram of the trajectory nappe that Fig. 4 contraction type defrlector buckets described in Fig. 1 are formed；
Fig. 5 is the top view of Fig. 4.
Fig. 6 is the schematic perspective view of second structure of the defrlector bucket for induced joint flood relief through dam of the present invention,
The defrlector bucket is diffusion type defrlector bucket；
Fig. 7 is Fig. 6 front views；
Fig. 8 is Fig. 6 top views；
The schematic diagram of the trajectory nappe that Fig. 9 diffusion type defrlector buckets described in Fig. 6 are formed；
Figure 10 is the top view of Fig. 9；
Figure 11 is the use state figure that contraction type defrlector bucket described in Fig. 1 is used for induced joint flood relief through dam energy dissipating；
Figure 12 is the top view of Figure 11；
Figure 13 is for contraction type defrlector bucket described in Fig. 1 and diffusion type defrlector bucket is combined for induced joint dam body described in Fig. 6
Flood-discharge energy-dissipating use state figure (table hole uses diffusion type defrlector bucket, mesopore to use contraction type defrlector bucket)；
Figure 14 is the top view of Figure 13.
In figure, 1-base plate, the arc surface section of 1-1-base plate, the flow surface of 1-1-1-arc surface section, 1-1-2-circular arc
The first side of face section, the second side of 1-1-3-arc surface section, the bevel phase of 1-2-base plate, 1-2-1-middle tooth, 1-2-
2-the first side tooth, 1-2-3-the second side tooth, the 2-the first abutment wall, the 3-the second abutment wall, 4-induced joint dam body, 5-flood discharge table
Hole, 6-left flood discharge mesopore, 7-right flood discharge mesopore, 8-downstream river course side bank, 9-table hole trajectory nappe enters aqua region, 10-
Left hole trajectory nappe enters aqua region, and 11-right mesopore trajectory nappe enters aqua region, 12-Talweg, 13-downstream
River course water surface curve.
In figure, L1The arc surface segment length of-base plate, the arc surface section width of B-base plate, R1The arc surface section of-base plate half
Footpath, L2- middle tine length, L3- side tine length, B1The root width of-middle tooth, B2The root width of-side tooth, i-bottom board inclined plane
The angle of the gradient of section, β-bottom board inclined plane section and horizontal plane, R2- the first side tooth, the lateral surface of the second side tooth are convex-shaped arc surface
When convex-shaped arc surface radius, R3The radius of spill cambered surface when-the first side tooth, the lateral surface of the second side tooth are spill cambered surface, α-
The angle of the first side tooth, the tangent line of the convex-shaped arc surface of the second side tooth or spill cambered surface lateral surface end points and base plate center line.
Specific embodiment
Further is made to the defrlector bucket for induced joint flood relief through dam of the present invention below by specific embodiment
Explanation.
Embodiment 1
In the present embodiment, the defrlector bucket of the first structure of the present invention, i.e. contraction type defrlector bucket are used for into certain big
Type arch dam engineering induced joint dam body table hole, mesopore flood-discharge energy-dissipating.Specifically be arranged as 1, table hole, mesopore 2, table centerline hole with
Talweg is parallel and in same perpendicular, and two mesopores are axisymmetricly arranged by symmetry axis of Talweg, and same
In one plane, centerline hole is identical with Talweg angle in two, is each about 5 °.
The structure of the contraction type defrlector bucket and stream flow-shape is chosen as shown in Fig. 1～5, by base plate 1 and respectively the bottom of with
First abutment wall 2 and the second abutment wall 3 of plate two sides combination is constituted, and the base plate is along water (flow) direction successively by concave up arc surface
Section 1-1 and the bevel phase 1-2 composition being connected tangent with arc surface section, the arc surface section of base plate includes circular arc flow surface 1-1-1
And positioned at first side 1-1-2 and second side 1-1-3 of circular arc flow surface both sides, the first side and second side are equal
For vertical plane, the bevel phase of base plate includes dentation flow surface, and the dentation flow surface is by a middle tooth 1-2-1 and symmetrical
In middle tooth both sides and equivalently-sized the first side tooth 1-2-2 and the second side tooth 1-2-3 are constituted, the root of each tooth with arc surface section
Connect, the length of middle tooth is more than the length of side tooth, the lateral surface of the first side tooth 1-2-2 and the second side tooth 1-2-3 is convex arc
Face, two convex-shaped arc surfaces first side 1-1-2 respectively with arc surface section, second side 1-1-3 are tangent, two convex-shaped arc surface ends
The tangent line of point is identical with the angle of base plate center line, the first abutment wall 2 and the second abutment wall 3 respectively with the first side of base plate arc surface section
Face and the convex-shaped arc surface tangent with first side, the second side of base plate arc surface section and the convex-shaped arc surface tangent with second side
Match, thus the first abutment wall and the second abutment wall are constituted and straight abutment wall and arc surface side by straight abutment wall and arc surface abutment wall
Wall is tangent.
Contraction type defrlector bucket size for table hole is as follows：Length L of base plate arc surface section1=13.96m, width B=
8m, arc radius R1=80m；The bevel phase of base plate and angle β=10 ° of horizontal plane；Middle tine length L of bottom board inclined plane section2=
12m, the width B of middle root portion1=4m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3, L3=6m, bottom
First side tooth of plate bevel phase and the width of the second side root portion are B2, B2=2m；The lateral surface of the first side and the second side tooth is equal
It is R for radius2Convex-shaped arc surface, R2=18.5m, the tangent line of two convex-shaped arc surface end points is α, α with the angle of base plate center line
=19 °；Choose angle of water γ=- 10 ° of bank.
Contraction type defrlector bucket size for mesopore is as follows：Length L of base plate arc surface section1=10.05m, width B=
5m, arc radius R1=48m；The bevel phase of base plate and angle β=12 ° of horizontal plane；Middle tine length L of bottom board inclined plane section2=
6m, the width B of middle root portion1=3m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3, L3=4m, base plate
First side tooth of bevel phase and the width of the second side root portion are B2, B2=1m；The lateral surface of the first side and the second side tooth is
Radius is R2Convex-shaped arc surface, R2=16.25m, the tangent line of two convex-shaped arc surface end points is α, α with the angle of base plate center line
=14 °；Choose bank angle of water γ=- 12 °.
In the present embodiment, the use state figure of contraction type defrlector bucket is shown in Figure 11, Figure 12, it is seen that table hole, mesopore choose flowing water
Tongue staggers up and down, and left, center, right separates, and with three-dimensional flood discharge effect, trajectory nappe presentation subregion is overboard, forms long and narrow banding and enters
The water surface, be effectively reduced unit area enters the water yield, it is to avoid concentrates into water, substantially reduces and riverbed is washed away.And enter water
Region is substantially near Talweg, it is to avoid directly washing away to bank slope.Therefore, on the ground of narrow river course deeply covered layer
Under the conditions of matter, it is possible to achieve the natural water pool scheme on " slope but no bottom protection, the road dams of Bu She bis- ", so as to avoid the scale of building grand
Greatly, the cushion pool for involving great expense and two road dams, simplify engineering and build, and save engineering cost, greatly reduce engineering construction difficulty
And construction costs.
Embodiment 2
In the present embodiment, contraction type defrlector bucket and diffusion type formula defrlector bucket are combined into high for certain large-scale arch dam engineering
Arch dam body table mesopore flood-discharge energy-dissipating.1, table hole is specifically arranged as, mesopore 2, table hole adopts diffusion type defrlector bucket, table hole
Center line is parallel with Talweg and in same perpendicular, and, using defrlector bucket when shrinking, two mesopores are with river course for mesopore
Deep line is axisymmetricly arranged for symmetry axis, and in the same plane, centerline hole is identical with Talweg angle in two, about
For 3 °.
The structure of the contraction type defrlector bucket flows flow-shape as shown in Fig. 1～5 with choosing, and contraction type defrlector bucket is the bottom of by
Plate 1 and the first abutment wall 2 for combining with base plate two sides respectively and the second abutment wall 3 are constituted, the base plate along water (flow) direction successively by
Concave up arc surface section 1-1 and bevel phase 1-2 being connected tangent with arc surface section is constituted, and the arc surface section of base plate includes circular arc
Shape flow surface 1-1-1 and first side 1-1-2 and second side 1-1-3 positioned at circular arc flow surface both sides, first side
Face and second side are vertical plane, and the bevel phase of base plate includes dentation flow surface, and the dentation flow surface is by a middle tooth
1-2-1 and it is symmetrically distributed in middle tooth both sides and the first equivalently-sized side tooth 1-2-2 and the second side tooth 1-2-3 are constituted, each tooth
Root connects with arc surface section, and the length of middle tooth is more than the length of side tooth, the first side tooth 1-2-2's and the second side tooth 1-2-3
Lateral surface is convex-shaped arc surface, two convex-shaped arc surfaces first side 1-1-2, second side 1-1-3 phase respectively with arc surface section
Cut, the tangent line of two convex-shaped arc surface end points is identical with the angle of base plate center line.First abutment wall 2 and the second abutment wall 3 respectively with bottom
The first side of plate arc surface section and the convex-shaped arc surface tangent with first side, the second side of base plate arc surface section and with second
The tangent convex-shaped arc surface in side matches, thus the first abutment wall and the second abutment wall constituted by straight abutment wall and arc surface abutment wall and
Straight abutment wall is tangent with arc surface abutment wall.
The structure of the diffusion type defrlector bucket and choose stream flow-shape as shown in Fig. 6～10, diffusion type defrlector bucket by
Base plate 1 and the first abutment wall 2 for combining with base plate two sides respectively and the second abutment wall 3 are constituted, the base plate along water (flow) direction successively
It is made up of concave up arc surface section 1-1 and bevel phase 1-2 being connected tangent with arc surface section, the arc surface section of base plate includes circle
Arc flow surface 1-1-1 and first side 1-1-2 and second side 1-1-3 positioned at circular arc flow surface both sides, described first
Side and second side are vertical plane, and the bevel phase of base plate includes dentation flow surface, and the dentation flow surface is by one
Tooth 1-2-1 and it is symmetrically distributed in middle tooth both sides and the first equivalently-sized side tooth 1-2-2 and the second side tooth 1-2-3 are constituted, each tooth
Root connect with arc surface section, the length of middle tooth more than side tooth length, the first side tooth 1-2-2 and the second side tooth 1-2-3
Lateral surface be spill cambered surface, two spill cambered surfaces first side 1-1-2, second side 1-1-3 respectively with arc surface section
Tangent, the tangent line of two spill cambered surface end points is identical with the angle of base plate center line；First abutment wall 2 and the second abutment wall 3 respectively with
The first side of base plate arc surface section and the spill cambered surface tangent with first side, the second side of base plate arc surface section and with
The tangent spill cambered surface of two side faces matches, thus the first abutment wall and the second abutment wall are constituted by straight abutment wall and arc surface abutment wall
And straight abutment wall is tangent with arc surface abutment wall.
The concrete size of diffusion type defrlector bucket for table hole is as follows：Length L of base plate arc surface section1=13.96m, it is wide
Degree B=10m, arc radius R1=100m；Angle β=8 ° of bottom board inclined plane section and horizontal plane；Middle tine length L of bottom board inclined plane section2
=10m, the width B of middle root portion1=6m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3, L3=5m,
First side tooth of bottom board inclined plane section and the width of the second side root portion are B2, B2=2m；First side and the lateral surface of the second side tooth
It is R to be radius3Spill cambered surface, R3=12.83m, tangent line and the angle of base plate center line of two spill cambered surface end points are
α, α=23 °；Choose bank angle of water γ=- 8 °.
The concrete size of contraction type defrlector bucket for mesopore is as follows：Length L of base plate arc surface section1=8.73m, width
B=5m, arc radius R1=50m；The bevel phase of base plate and angle β=10 ° of horizontal plane；Middle tine length L of bottom board inclined plane section2
=5m, the width B of middle root portion1=3m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3, L3=3m, bottom
First side tooth of plate bevel phase and the width of the second side root portion are B2, B2=1m；The lateral surface of the first side and the second side tooth is equal
It is R for radius2Convex-shaped arc surface, R2=9.25m, the tangent line of two convex-shaped arc surface end points is α, α with the angle of base plate center line
=19 °；Choose bank angle of water γ=10 °.
In the present embodiment, state diagram such as Figure 13, Figure 14 that diffusion type defrlector bucket and contraction type defrlector bucket are applied in combination,
The horizontal proliferation in the air of hole trajectory nappe can be shown in Table, wide and thin overflow is formed in the air, both sides tooth is chosen high and chosen away from little
In middle tooth, there are two paddy and a peak in overflow face, the contact area with air is increased, beneficial to aeration.Enter aqua region in a bow
Shape banding, increases the aerial energy dissipating of overflow.One long and narrow banding of mesopore trajectory nappe presentation is overboard, substantially reduces overflow and enters water
Impulsive force, alleviates and riverbed and bank slope is washed away.Choose stream range farther out, improve the security of dam foundation, can be very
The current energy dissipating in aerial and river course is completed in long distance, the less narrow ground of deeply covered layer geological conditions downstream river course is adapted to
Shape condition, so as to avoid washing away for bank slope well, reaches slope but no bottom protection under deeply covered layer orographic condition, Bu She bis- road dams
Purpose, so as to avoid building cushion pool that is large-scale, involving great expense and two road dams, simplifies engineering and builds, and saves engineering cost,
Greatly reduce engineering construction difficulty and construction costs.
Embodiment 3
In the present embodiment, contraction type defrlector bucket is disappeared for certain large-scale arch dam engineering induced joint dam body table mesopore flood discharge
Energy.Specifically it is arranged as 1, table hole, mesopore 2, table centerline hole is parallel with Talweg and in same perpendicular, in two
Hole is arranged symmetrically with regard to Talweg, and inclines to Talweg in same level along water (flow) direction, in two mesopores
Heart line is identical with Talweg angle, is each about 5 °.
The structure of the contraction type defrlector bucket flows flow-shape as shown in Fig. 1～5 with choosing, and shrinks with described in embodiment 1
Formula defrlector bucket structure is identical.
Contraction type defrlector bucket size for table hole is as follows：Length L of base plate arc surface section1=10.47m, width B=
6m, arc radius R1=120m；The bevel phase of base plate and angle β=5 ° of horizontal plane；Middle tine length L of bottom board inclined plane section2=
10m, the width B of middle root portion1=5m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3, L3=6m, bottom
First side tooth of plate bevel phase and the width of the second side root portion are B2, B2=0.5m；First side and the lateral surface of the second side tooth
It is R to be radius2Convex-shaped arc surface, R2=36.25m, the tangent line of two convex-shaped arc surface end points is with the angle of base plate center line
α, α=10 °；Choose bank angle of water γ=5 °.
Contraction type defrlector bucket size for mesopore is as follows：Length L of base plate arc surface section1=13.96m, width B=
6m, arc radius R1=80m；The bevel phase of base plate and angle β=10 ° of horizontal plane；Middle tine length L of bottom board inclined plane section2=
8m, the width B of middle root portion1=2m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3, L3=6m, base plate
First side tooth of bevel phase and the width of the second side root portion are B2, B2=2m；The lateral surface of the first side and the second side tooth is
Radius is R2Convex-shaped arc surface, R2=18.53m, the tangent line of two convex-shaped arc surface end points is α, α with the angle of base plate center line
=19 °；Choose bank angle of water γ=10 °.
In the present embodiment, use state figure is similar with Figure 11, Figure 12, and table mesopore trajectory nappe staggers up and down, left, center, right point
From with three-dimensional flood discharge effect, trajectory nappe presentation subregion is overboard, forms long and narrow banding upstream face, is effectively reduced list
What plane was accumulated enters the water yield, it is to avoid concentrates into water, substantially reduces and riverbed is washed away.And enter aqua region substantially in river course Zhong Hong
Near line, it is to avoid directly washing away to bank slope.Therefore, under the geological conditions of narrow river course deeply covered layer, it is possible to achieve " shield
The natural water pool scheme on slope not river bottom protection, the road dams of Bu She bis- ", so as to avoid building cushion pool that is large-scale, involving great expense with
Two roads dam, simplify engineering and build, and save engineering cost, greatly reduce engineering construction difficulty and construction costs.
Embodiment 4
In the present embodiment, contraction type defrlector bucket and diffusion type formula defrlector bucket are combined into high for certain large-scale arch dam engineering
Arch dam body table mesopore flood-discharge energy-dissipating.1, table hole is specifically arranged as, mesopore 2, table hole adopts diffusion type defrlector bucket, table hole
Center line is parallel with Talweg and in same perpendicular, and mesopore adopts contraction type defrlector bucket, and two mesopores are with river course
Deep line is axisymmetricly arranged for symmetry axis, and in the same plane, centerline hole is identical with Talweg angle in two, about
For 3 °.
The structure of the contraction type defrlector bucket flows flow-shape as shown in Fig. 1～5 with choosing, and shrinks with described in embodiment 2
Formula defrlector bucket structure is identical.
The structure of the diffusion type defrlector bucket flows flow-shape as shown in Fig. 6～10 with choosing, and spreads with described in embodiment 2
Formula defrlector bucket structure is identical.
The concrete size of diffusion type defrlector bucket for table hole is as follows：Length L of base plate arc surface section1=13.96m, it is wide
Degree B=10m, arc radius R1=100m；The bevel phase of the base plate and angle β=8 ° of horizontal plane；In bottom board inclined plane section
Tine length L2=8m, the width B of middle root portion1=6m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3,
L3=5m, the first side tooth of bottom board inclined plane section and the width of the second side root portion are B2, B2=2m；First side and the second side tooth
Lateral surface to be radius be R3Spill cambered surface, R3=12.83m, tangent line and the base plate center line of two spill cambered surface end points
Angle is α, α=8 °；Choose bank angle of water γ=- 10 °.
The concrete size of contraction type defrlector bucket for mesopore is as follows：Length L of base plate arc surface section1=8.73m, width
B=5m, arc radius R1=50m；The bevel phase of base plate and angle β=10 ° of horizontal plane；Middle tine length L of bottom board inclined plane section2
=14m, the width B of middle root portion1=3m, the first side tooth of bottom board inclined plane section and the length of the second side tooth are L3, L3=5m,
First side tooth of bottom board inclined plane section and the width of the second side root portion are B2, B2=1m；The lateral surface of side and the second side tooth is equal
It is R for radius2Convex-shaped arc surface, R2=9.25m, the tangent line of two convex-shaped arc surface end points is α, α with the angle of base plate center line
=5 °；Choose bank angle of water γ=15 °.
In the present embodiment, it is similar with Figure 13, Figure 14 to be applied in combination state diagram, the trajectory nappe horizontal proliferation in the air of table hole,
Form wide and thin overflow in the air, both sides tooth choose it is high with choose the tooth in being respectively less than, there are two paddy and a peak in overflow face, increases
The big contact area with air, beneficial to aeration.Enter aqua region in an arch banding, increase the aerial energy dissipating of overflow.Mesopore
One long and narrow banding of trajectory nappe presentation is overboard, substantially reduces the impulsive force that overflow enters water, alleviates and riverbed and bank slope are washed away.
Choose stream range farther out, improve the security of dam foundation, the current in aerial and river course can be completed in very long distance
Energy dissipating, adapts to the less narrow orographic condition of deeply covered layer geological conditions downstream river course, so as to avoid washing away for bank slope well,
Slope but no bottom protection under deeply covered layer orographic condition, the purpose on the road dams of Bu She bis- are reached, is held high so as to avoid building large-scale, cost
Expensive cushion pool and two road dams, simplify engineering and build, and save engineering cost, greatly reduce engineering construction difficulty and engineering is made
Valency.
Claims (3)
1. the defrlector bucket of induced joint flood relief through dam is used for, by base plate (1) and the first abutment wall for combining with base plate two sides respectively
(2) constitute with the second abutment wall (3), it is characterised in that the base plate is along water (flow) direction successively by concave up arc surface section (1-1)
And bevel phase (1-2) composition being connected tangent with arc surface section, the arc surface section of base plate include circular arc flow surface (1-1-1) and
Positioned at the first side (1-1-2) and second side (1-1-3), the first side and second side of circular arc flow surface both sides
Vertical plane is, the bevel phase of base plate includes dentation flow surface, and the dentation flow surface is by a middle tooth (1-2-1) and symmetrically
Be distributed in middle tooth both sides and the first equivalently-sized side tooth (1-2-2) and the second side tooth (1-2-3) constituted, the root of each tooth with
Arc surface section connects, and the length of middle tooth is more than the outside of the length of side tooth, the first side tooth (1-2-2) and the second side tooth (1-2-3)
Face is convex-shaped arc surface, two convex-shaped arc surfaces first side (1-1-2), second side (1-1-3) phase respectively with arc surface section
Cut, the tangent line of two convex-shaped arc surface end points is identical with the angle of base plate center line, or the first side tooth (1-2-2) and the second side tooth
(1-2-3) lateral surface is spill cambered surface, two spill cambered surfaces first side (1-1-2) respectively with arc surface section, second
(1-1-3) is tangent for side, and the tangent line of two spill cambered surface end points is identical with the angle of base plate center line；First abutment wall (2) and
Two abutment walls (3) first side respectively with base plate arc surface section and the convex-shaped arc surface tangent with first side or spill cambered surface, bottom
The second side of plate arc surface section and the convex-shaped arc surface tangent with second side or spill cambered surface match.
2. the defrlector bucket of induced joint flood relief through dam is used for according to claim 1, it is characterised in that the base plate arc surface
The radius R of section (1-1)1=L1/ β, in formula, L1For the length of base plate arc surface section, β is the bevel phase (1-2) and horizontal plane of base plate
Angle, unit is radian, the width B of the base plate arc surface section (1-1) and length L of base plate arc surface section1Ratio be 1 ︰
(1～3), the bevel phase (1-2) of the base plate and angle β=5 °～35 ° of horizontal plane.
3. the defrlector bucket of induced joint flood relief through dam is used for according to claim 2, it is characterised in that in bottom board inclined plane section
Tooth (1-2-1) length L2=(0.75～3.0) B, the width B of middle root portion1=(0.3～0.7) B, the first side of bottom board inclined plane section
The length of tooth (1-2-2) and the second side tooth (1-2-3) is L3, L3︰ L2=(0.3～0.8) ︰ 1, the first side of bottom board inclined plane section
The width of tooth (1-2-2) and the second side tooth (1-2-3) root is B2=(B-B1)/2；When the first side tooth (1-2-2) and the second side
When the lateral surface of tooth (1-2-3) is convex-shaped arc surface, the radius R of the convex-shaped arc surface2=L3/ sin α, when the outside of two side teeth
When face is spill cambered surface, the radius R of the spill cambered surface3=L3/sinα；It is above-mentioned it is various in, B for base plate arc surface section width
Degree, α is the tangent line of two convex-shaped arc surface end points and the angle of base plate center line or the tangent line and base plate of two spill cambered surface end points
The angle of center line, and α=3 °～25 °.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578322A (en) * | 2019-10-14 | 2019-12-17 | 中国电建集团中南勘测设计研究院有限公司 | River valley trajectory bucket |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2545752B2 (en) * | 1994-10-28 | 1996-10-23 | 建設省土木研究所長 | Selective inflow device |
| CN101761057A (en) * | 2009-12-17 | 2010-06-30 | 西北农林科技大学 | Flood-discharging energy dissipater of hydroelectric project |
| CN201908283U (en) * | 2010-12-13 | 2011-07-27 | 福建省水利水电勘测设计研究院 | Large-sized splitter pier flood drainage structure |
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2016
- 2016-09-28 CN CN201610860075.6A patent/CN106638503B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2545752B2 (en) * | 1994-10-28 | 1996-10-23 | 建設省土木研究所長 | Selective inflow device |
| CN101761057A (en) * | 2009-12-17 | 2010-06-30 | 西北农林科技大学 | Flood-discharging energy dissipater of hydroelectric project |
| CN201908283U (en) * | 2010-12-13 | 2011-07-27 | 福建省水利水电勘测设计研究院 | Large-sized splitter pier flood drainage structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578322A (en) * | 2019-10-14 | 2019-12-17 | 中国电建集团中南勘测设计研究院有限公司 | River valley trajectory bucket |
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| CN106638503B (en) | 2018-10-26 |
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