CN101748712A - Method for rebuilding diversion tunnel into spillway tunnel by utilizing combined pore plate energy dissipation technology - Google Patents
Method for rebuilding diversion tunnel into spillway tunnel by utilizing combined pore plate energy dissipation technology Download PDFInfo
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- CN101748712A CN101748712A CN200910216684A CN200910216684A CN101748712A CN 101748712 A CN101748712 A CN 101748712A CN 200910216684 A CN200910216684 A CN 200910216684A CN 200910216684 A CN200910216684 A CN 200910216684A CN 101748712 A CN101748712 A CN 101748712A
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Abstract
The invention relates to a method for rebuilding a diversion tunnel into a spillway tunnel by utilizing combined pore plate energy dissipation technology, the rebuilding operation are as follows: 1. a vertical shaft communicated with the diversion tunnel is arranged at the closed end of the rebuilding section of the diversion tunnel, and the central line of the vertical shaft is vertical to the central line of the rebuilding section of the diversion tunnel; 2. a one-grade pore plate is arranged at the connecting position of the vertical shaft and the rebuilding section of the diversion tunnel, and the pore plate is defined as a vertical shaft pore plate, and the vertical shaft pore plate and the vertical shaft have the same central line; 3. at least one-grade pore plate is arranged in the rebuilding section of the diversion tunnel behind the vertical shaft, the pore plate arranged in the rebuilding section of the diversion tunnel is defined as the diversion tunnel pore plate, and the diversion tunnel pore plate and the diversion tunnel rebuilding section have the same central line; 4. a transition section of discharge cross section, which is from large to small, is arranged at the outlet end of the rebuilding section of the diversion tunnel.
Description
Technical field
The invention belongs to the Hydraulic and Hydro-Power Engineering field, relate to a kind of method that reconstruction of diversion tunnel is become to have the permanent flood discharging tunnel of vertical shaft.
Background technology
When reconstruction of diversion tunnel was become to have the flood discharging tunnel of vertical shaft, prior art was used hole plug formula combination energy dissipater usually, and the plug energy dissipating of multistage hole promptly is set in the reconstruction of diversion tunnel section.Engineering practice shows, the characteristics that when large-scale reconstruction of diversion tunnel, often have big flow, high water head, and energy dissipater's Diversion Tunnel limited length can be set, therefore use hole plug formula combination energy dissipater to have following problem: 1, owing to the current action of centrifugal force, the risk of hole plug formula energy dissipater wall generation cavitation and cavitation erosion increases; 2, the higher and energy dissipating of hole plug formula energy dissipater cavitation inception number requires also higherly to exist implacable contradiction (the excessive problem of the not enough vent flow of energy dissipating to occur, occur that vent flow satisfies design and the problem of cavitation destruction appears in the hole plug, can't reach the unification of flood discharge and energy dissipating).The existence of the problems referred to above certainly will influence the safe operation of the flood discharging tunnel of reconstructing.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of combined pore plate energy dissipation technology that utilizes with the method for reconstruction of diversion tunnel for flood discharging tunnel, this kind method usually runs in the time of can not only solving reconstruction of diversion tunnel flood discharging tunnel under high flow rate, the big flow service condition have press in the technical barrier of stream energy dissipater cavitation destruction, and can improve energy dissipation rate.
The combined pore plate energy dissipation technology that utilizes of the present invention is with the method for reconstruction of diversion tunnel for flood discharging tunnel, and the reconstruction operation is as follows:
1. the vertical shaft that communicates with Diversion Tunnel in the blind end setting of reconstruction of diversion tunnel section, the center line of described vertical shaft is perpendicular to the center line of reconstruction of diversion tunnel section;
2. in the junction of vertical shaft and reconstruction of diversion tunnel section the one-level orifice plate is set, this orifice plate is defined as the vertical shaft orifice plate, described vertical shaft orifice plate and the concentricity line of vertical shaft;
3. in the reconstruction of diversion tunnel section after vertical shaft the one-level orifice plate is set at least, the orifice plate that is provided with in the reconstruction of diversion tunnel section is defined as the Diversion Tunnel orifice plate, described Diversion Tunnel orifice plate and the concentricity line of reconstruction of diversion tunnel section;
4. the port of export in the reconstruction of diversion tunnel section is provided with cross-section of river transition section from large to small.
Described vertical shaft orifice plate, the high-intensity material of Diversion Tunnel orifice plate, for example materials such as steel, tempered glass, pottery.
In the engineering practice, the reconstruction of diversion tunnel section has two kinds of shapes usually, and a kind of is " gateway opening " shape (cross section that is the reconstruction of diversion tunnel section is " gateway opening " shape), and a kind of is circular.According to the difformity of reconstruction of diversion tunnel section, the Diversion Tunnel orifice plate the position is set and shape is different.Illustrated respectively below:
When the reconstruction of diversion tunnel section is " gateway opening " shape, distance L 0=2H0 between the blind end of vertical shaft center line and reconstruction of diversion tunnel section～5H0, first order Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 1 between the vertical shaft center line are at least 3H0, distance L 4 between the Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section is at least 2H0, and the last grade Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 2 between the transition section section start are at least 1H0.The Diversion Tunnel orifice plate is " gateway opening " shape plate that is provided with a water hole, the size of described " gateway opening " shape plate and reconstruction of diversion tunnel section measure-alike, described " gateway opening " shape plate thickness b2=0.5m～2m, water hole on described " gateway opening " shape plate is that the cross-section of river is by little extremely big arcuate socket, aperture d2=0.3H0～the 0.8H0 of this arcuate socket water inlet end, form the arc radius r2=0.5m～2m of arcuate socket, the center line of this arcuate socket is perpendicular to the axis of symmetry of " gateway opening " shape plate and mistake " gateway opening " shape plate, the center line of this arcuate socket is with respect to the height H 2=0.5H0 of " gateway opening " shape plate bottom surface, and described H0 is the height of gateway opening.
When the reconstruction of diversion tunnel section is circle, distance L 0=2D0 between the blind end of vertical shaft center line and reconstruction of diversion tunnel section～5D0, first order Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 1 between the vertical shaft center line are at least 3D0, distance L 4 between the Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section is at least 2D0, and the last grade Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 2 between the transition section section start are for being at least 1D0.The Diversion Tunnel orifice plate is the plectane that is provided with a water hole, the diameter of described plectane equals the diameter D0 of reconstruction of diversion tunnel section, thickness b3=0.5m～the 2m of described plectane, the water hole that is provided with on the described plectane is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, aperture d3=0.3D0～the 0.8D0 of this arcuate socket water inlet end, the arc radius r3=0.5m～2m of formation arcuate socket, described D0 is the diameter of reconstruction of diversion tunnel section.
In the engineering practice, it is circular that the shape of vertical shaft is generally.When vertical shaft is circle, the vertical shaft orifice plate is the plectane that is provided with a water hole, the diameter of described plectane equals the diameter D1 of vertical shaft, thickness b1=0.5m～the 2m of described plectane, the water hole that is provided with on the described plectane is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, the aperture d1=0.3D1～0.8D1 of this arcuate socket water inlet end, the arc radius r1=0.5m～2m of formation arcuate socket.
The present invention has following beneficial effect:
1, owing to be provided with the vertical shaft orifice plate, thereby the energy that vertical shaft exports current be can reduce, vertical shaft tail end and vertical shaft and flood discharging tunnel switching phase generation cavitation and cavitation erosion prevented in the junction of vertical shaft and reconstruction of diversion tunnel section.
2, owing to be provided with one-level Diversion Tunnel orifice plate at least in the reconstruction of diversion tunnel section after vertical shaft, the port of export in the reconstruction of diversion tunnel section is provided with cross-section of river transition section from large to small, thereby can improve the pressure of flood discharging tunnel greatly, improve Cavitation Characteristics in the hole, avoid the generation of cavitation corrosion phenomenon, guarantee the flood discharging tunnel safe operation of being reconstructed.
3, test shows, the flood discharging tunnel that uses the method for the invention to reconstruct, and at flood discharge hole outlet, the energy dissipation rate of current can improve 20%～50%.
Description of drawings
Fig. 1 is to use the method for the invention Diversion Tunnel to be reconstructed and a kind of structural representation of the flood discharging tunnel that forms, and the reconstruction of diversion tunnel section is " gateway opening " shape;
Fig. 2 is the I-I sectional view of Fig. 1;
Fig. 3 is the II-II profile of Fig. 1;
Fig. 4 is the III-III profile of Fig. 1;
Fig. 5 is a kind of shape, the organigram of vertical shaft orifice plate;
Fig. 6 is the I-I sectional view of Fig. 5;
Fig. 7 is shape, the organigram of Diversion Tunnel orifice plate for " gateway opening " shape plate;
Fig. 8 is the I-I sectional view of Fig. 7;
Fig. 9 is to use the method for the invention Diversion Tunnel to be reconstructed and another structural representation of the flood discharging tunnel that forms, and the reconstruction of diversion tunnel section is circular;
Figure 10 is the I-I sectional view of Fig. 9;
Figure 11 is the II-II profile of Fig. 9;
Figure 12 is the III-III profile of Fig. 9;
Figure 13 is that the Diversion Tunnel orifice plate is shape, the organigram of plectane;
Figure 14 is the I-I sectional view of Figure 13.
Among the figure, 1-reconstruction of diversion tunnel section, the 2-vertical shaft, 3-vertical shaft orifice plate, 4-Diversion Tunnel orifice plate, the 5-transition section, 6-vertical shaft orifice plate water hole, 7-Diversion Tunnel orifice plate water hole, distance between the blind end of L0-vertical shaft center line and reconstruction of diversion tunnel section, distance between L1-first order Diversion Tunnel orifice plate and the vertical shaft center line, distance between the last grade of L2-Diversion Tunnel orifice plate and the transition section section start, the length of L3-transition section, distance between the L4-Diversion Tunnel orifice plate, the diameter of the circular reconstruction of diversion tunnel section of D0-, D1-vertical shaft diameter, the height of H0-" gateway opening " shape reconstruction of diversion tunnel section, the width of B0-" gateway opening " shape reconstruction of diversion tunnel section, the stalk height of H1-" gateway opening " shape reconstruction of diversion tunnel section, the vault radius of R-" gateway opening " shape reconstruction of diversion tunnel section, the water hole width of transition section in B1-" gateway opening " the shape reconstruction of diversion tunnel section, the water hole height of transition section in H3-" gateway opening " the shape reconstruction of diversion tunnel section, the water hole height of transition section in the circular reconstruction of diversion tunnel section of H4-, the water hole width of transition section in the circular reconstruction of diversion tunnel section of B2-, the distance at transition section water hole top to center in the circular reconstruction of diversion tunnel section of H5-, the thickness of b1-vertical shaft orifice plate, d1-vertical shaft orifice plate water hole water inlet end aperture, the arc radius of r1-vertical shaft orifice plate arc water hole, the thickness of b2-" gateway opening " shape Diversion Tunnel orifice plate, the water hole water inlet end aperture of d2-" gateway opening " shape Diversion Tunnel orifice plate, the arc radius of the arc water hole of r2-" gateway opening " shape Diversion Tunnel orifice plate, the thickness of the circular Diversion Tunnel orifice plate of b3-, the water hole water inlet end aperture of the circular Diversion Tunnel orifice plate of d3-, the arc radius of the arc water hole of the circular Diversion Tunnel orifice plate of r3-.
The specific embodiment
Below in conjunction with accompanying drawing the combined pore plate energy dissipation technology that utilizes of the present invention is described further the method for reconstruction of diversion tunnel for flood discharging tunnel.
Certain key water control project water retaining structure adopts concrete gravity dam, maximum height of dam 204m, and multi-purpose project is maximum transfers big vast letdown flow to be about 13927m
3(peak flood flow is 14800m to/s
3/ s), and total flood discharge power 11600MW, maximum discharge per unit width surpasses 124m/s, and (4 * 400MW), the flood discharging tunnel discharge is 1300m to installed capacity 1600MW
3/ s has characteristics such as narrow river valley, high water head, big flow, high flow rate.Reconstruction of diversion tunnel section 1 is " gateway opening " shape, the radius R=3.5m of " gateway opening " width B 0=16.0m, height H 0=20.0m, stalk section height H 1=16m, vault.Employing the method for the invention is as follows to the operation that Diversion Tunnel is reconstructed:
1. the vertical shaft 2 that communicates with Diversion Tunnel in the blind end setting of reconstruction of diversion tunnel section 1, described vertical shaft is circular, diameter D1=12m, its center line is perpendicular to the center line of reconstruction of diversion tunnel section 1;
2. in the junction of vertical shaft and reconstruction of diversion tunnel section vertical shaft orifice plate 3 is set, described vertical shaft orifice plate and the concentricity line of vertical shaft;
3. in the reconstruction of diversion tunnel section 1 after vertical shaft one-level Diversion Tunnel orifice plate 4 is set, described Diversion Tunnel orifice plate and the concentricity line of reconstruction of diversion tunnel section;
4. the port of export in the reconstruction of diversion tunnel section is provided with cross-section of river transition section 5 from large to small.
Diversion Tunnel is reconstructed the flood discharging tunnel that forms by the method for the invention, its structure as shown in Figure 1 and Figure 2, about size as follows: the distance L 0=50m between the blind end of reconstruction of diversion tunnel section and the vertical shaft center line, distance L 1=70m between Diversion Tunnel orifice plate 4 and the vertical shaft center line, distance L 2=30m between Diversion Tunnel orifice plate 4 and transition section 5 section starts, the length L 3=20m of transition section.Vertical shaft orifice plate 3 is a steel plate, its shape, structure are as Fig. 5, shown in Figure 6, for being provided with the plectane of a water hole 6, the diameter of described plectane equal vertical shaft diameter D1 (=12m), the thickness b1 of described plectane is 1m, and the water hole 6 that is provided with on the described plectane is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, the aperture d1=9m of this arcuate socket water inlet end, the arc radius r1 that forms arcuate socket is 1m.Diversion Tunnel orifice plate 4 is a steel plate, its shape, structure is as Fig. 7, shown in Figure 8, for being provided with " gateway opening " shape plate of a water hole 7, the size of described " gateway opening " shape plate and measure-alike (the width B 0=16.0m of reconstruction of diversion tunnel section, height H 0=20.0m, stalk section height H 1=16m, the radius R of vault=3.5m), described " gateway opening " shape plate thickness b2 be 1m, water hole 7 on described " gateway opening " shape plate is that the cross-section of river is by little extremely big arcuate socket, the aperture d2=14m of this arcuate socket water inlet end, the arc radius r2 that forms arcuate socket is 1.5m, the center line of this arcuate socket is perpendicular to the axis of symmetry of " gateway opening " shape plate and mistake " gateway opening " shape plate, and the center line of this arcuate socket is with respect to the height H 2=10m of " gateway opening " shape plate bottom surface.The cross section of transition section 5 as shown in Figure 4, as can be seen from Figure 4, the water hole of transition section is a rectangular opening, the width B 1=10m at the height H 3=14m at the minimum place of water hole, the minimum place of water hole.
Embodiment 2
Certain power station barrage is a Concrete Face Rockfill Dam, maximum height of dam 146m, and normal pool level 998.00m regulates storage capacity 0.83 * 108m
3(control characteristic is season to regulate storage coefficient 0.021), installed capacity 240MW, the flood discharging tunnel in its release floodwatering facility are by reconstruction of diversion tunnel, and vent flow is 500m
3/ s.Reconstruction of diversion tunnel section 1 is circular, its diameter D0=12m.Employing the method for the invention is as follows to the operation that Diversion Tunnel is reconstructed:
1. the vertical shaft 2 that communicates with Diversion Tunnel in the blind end setting of reconstruction of diversion tunnel section 1, described vertical shaft is circular, its diameter D1=6m, its center line is perpendicular to the center line of reconstruction of diversion tunnel section 1;
2. in the junction of vertical shaft and reconstruction of diversion tunnel section vertical shaft orifice plate 3 is set, described vertical shaft orifice plate and the concentricity line of vertical shaft;
3. two-stage Diversion Tunnel orifice plate 4-1,4-2 are set, described Diversion Tunnel orifice plate and the concentricity line of reconstruction of diversion tunnel section in the reconstruction of diversion tunnel section 1 after vertical shaft;
4. the port of export in the reconstruction of diversion tunnel section is provided with cross-section of river transition section 5 from large to small.
By the method for the invention Diversion Tunnel is reconstructed the flood discharging tunnel that forms, its structure such as Fig. 9, shown in Figure 10.Distance L 0=30m between the blind end of reconstruction of diversion tunnel section and the vertical shaft center line, distance L 1=40m between first order Diversion Tunnel orifice plate 4-1 and the vertical shaft center line, distance L 4=30m between first order Diversion Tunnel orifice plate 4-1 and the second level Diversion Tunnel orifice plate 4-2, distance L 2=20m between second level Diversion Tunnel orifice plate 4-2 and transition section 5 section starts, the length L 3=20m of transition section.Vertical shaft orifice plate 3 is a steel plate, its shape, structure are as Fig. 5, shown in Figure 6, for being provided with the plectane of a water hole 6, the diameter of described plectane equal vertical shaft diameter D1 (=6m), the thickness b1 of described plectane is 1m, and the water hole 6 that is provided with on the described plectane is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, the aperture d1=2.5m of this arcuate socket water inlet end, the arc radius r1 that forms arcuate socket is 0.5m.First order Diversion Tunnel orifice plate 4-1 is a steel plate, its shape, structure are as Figure 13, shown in Figure 14, for being provided with the plectane of a water hole 7, the diameter of described plectane equal reconstruction of diversion tunnel section diameter D0 (=12m), the thickness b3 of described plectane is 1m, and the water hole 7 that is provided with on the described plectane is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, the aperture d3=7m of this arcuate socket water inlet end, the arc radius r3 that forms arcuate socket is 0.8m.The manufacturing materials of second level Diversion Tunnel orifice plate 4-2, shape, structure, size are identical with first order Diversion Tunnel orifice plate 4-1.The cross section of transition section 5 as shown in figure 12, as can be seen from Figure 12, the water hole of transition section 5 is a rectangular opening, the width B 2=5 at the height H 4=4.5 at the minimum place of water hole, the minimum place of water hole, the water hole top is to the distance H 5=0.5m at transition section center.
Claims (8)
1. one kind is utilized combined pore plate energy dissipation technology with the method for reconstruction of diversion tunnel for flood discharging tunnel, it is characterized in that the reconstruction operation is as follows:
1. the vertical shaft (2) that communicates with Diversion Tunnel in the blind end setting of reconstruction of diversion tunnel section (1), the center line of described vertical shaft is perpendicular to the center line of reconstruction of diversion tunnel section;
2. in the junction of vertical shaft (2) and reconstruction of diversion tunnel section (1) the one-level orifice plate is set, this orifice plate is defined as vertical shaft orifice plate (3), described vertical shaft orifice plate (3) and the concentricity line of vertical shaft (2);
3. in vertical shaft (2) reconstruction of diversion tunnel section (1) afterwards the one-level orifice plate is set at least, the orifice plate that is provided with in the reconstruction of diversion tunnel section is defined as Diversion Tunnel orifice plate (4), described Diversion Tunnel orifice plate (4) and the concentricity line of reconstruction of diversion tunnel section (1);
4. the port of export in reconstruction of diversion tunnel section (1) is provided with cross-section of river transition section (5) from large to small.
2. the combined pore plate energy dissipation technology that utilizes according to claim 1 is with the method for reconstruction of diversion tunnel for flood discharging tunnel, when it is characterized in that reconstruction of diversion tunnel section (1) for " gateway opening " shape, distance L 0=2H0 between the blind end of vertical shaft center line and reconstruction of diversion tunnel section～5H0, first order Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 1 between vertical shaft (2) center line are at least 3H0, distance L 4 between the Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section is at least 2H0, the last grade Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 2 between transition section (5) section start are at least 1H0, and described H0 is the height of gateway opening.
3. the combined pore plate energy dissipation technology that utilizes according to claim 1 is with the method for reconstruction of diversion tunnel for flood discharging tunnel, when it is characterized in that reconstruction of diversion tunnel section (1) for circle, distance L 0=2D0 between the blind end of vertical shaft center line and reconstruction of diversion tunnel section～5D0, first order Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 1 between vertical shaft (2) center line are at least 3D0, distance L 4 between the Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section is at least 2D0, the last grade Diversion Tunnel orifice plate that is provided with in the reconstruction of diversion tunnel section and the distance L 2 between transition section (5) section start are at least 1D0, and described D0 is the diameter of reconstruction of diversion tunnel section.
4. the combined pore plate energy dissipation technology that utilizes according to claim 1 and 2 is with the method for reconstruction of diversion tunnel for flood discharging tunnel, when it is characterized in that reconstruction of diversion tunnel section (1) for " gateway opening " shape, Diversion Tunnel orifice plate (4) is for being provided with " gateway opening " shape plate of a water hole (7), the size of described " gateway opening " shape plate and reconstruction of diversion tunnel section measure-alike, described " gateway opening " shape plate thickness b2=0.5m～2m, water hole (7) on described " gateway opening " shape plate is that the cross-section of river is by little extremely big arcuate socket, aperture d2=0.3H0～the 0.8H0 of this arcuate socket water inlet end, form the arc radius r2=0.5m～2m of arcuate socket, the center line of this arcuate socket is perpendicular to the axis of symmetry of " gateway opening " shape plate and mistake " gateway opening " shape plate, the center line of this arcuate socket is with respect to the height H 2=0.5H0 of " gateway opening " shape plate bottom surface, and described H0 is the height of gateway opening.
According to claim 1 or the 3 described combined pore plate energy dissipation technologies that utilize with the method for reconstruction of diversion tunnel for flood discharging tunnel, when it is characterized in that reconstruction of diversion tunnel section (1) for circle, Diversion Tunnel orifice plate (4) is for being provided with the plectane of a water hole (7), the diameter of described plectane equals the diameter D0 of reconstruction of diversion tunnel section, thickness b3=0.5m～the 2m of described plectane, the water hole that is provided with on the described plectane (7) is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, aperture d3=0.3D0～the 0.8D0 of this arcuate socket water inlet end, form the arc radius r3=0.5m～2m of arcuate socket, described D0 is the diameter of reconstruction of diversion tunnel section.
According to the described combined pore plate energy dissipation technology that utilizes of arbitrary claim in the claim 1 to 3 with the method for reconstruction of diversion tunnel for flood discharging tunnel, it is characterized in that vertical shaft (2) is for circular, vertical shaft orifice plate (3) is for being provided with the plectane of a water hole (6), the diameter of described plectane equals the diameter D1 of vertical shaft, thickness b1=0.5m～the 2m of described plectane, the water hole that is provided with on the described plectane (6) is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, aperture d1=0.3D1～the 0.8D1 of this arcuate socket water inlet end, the arc radius r1=0.5m～2m of formation arcuate socket.
7. the combined pore plate energy dissipation technology that utilizes according to claim 4 is with the method for reconstruction of diversion tunnel for flood discharging tunnel, it is characterized in that vertical shaft (2) is for circular, vertical shaft orifice plate (3) is for being provided with the plectane of a water hole (6), the diameter of described plectane equals the diameter D1 of vertical shaft, thickness b1=0.5m～the 2m of described plectane, the water hole that is provided with on the described plectane (6) is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, aperture d1=0.3D1～the 0.8D1 of this arcuate socket water inlet end, the arc radius r1=0.5m～2m of formation arcuate socket.
8. the combined pore plate energy dissipation technology that utilizes according to claim 5 is with the method for reconstruction of diversion tunnel for flood discharging tunnel, it is characterized in that vertical shaft (2) is for circular, vertical shaft orifice plate (3) is for being provided with the plectane of a water hole (6), the diameter of described plectane equals the diameter D1 of vertical shaft, thickness b1=0.5m～the 2m of described plectane, the water hole that is provided with on the described plectane (6) is that the cross-section of river is by little extremely big arcuate socket, the center line of this arcuate socket and plectane central lines, aperture d1=0.3D1～the 0.8D1 of this arcuate socket water inlet end, the arc radius r1=0.5m～2m of formation arcuate socket.
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| CN2009102166848A CN101748712B (en) | 2009-12-11 | 2009-12-11 | Method for rebuilding diversion tunnel into spillway tunnel by utilizing combined pore plate energy dissipation technology |
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| CN105951689A (en) * | 2016-06-30 | 2016-09-21 | 中国电建集团中南勘测设计研究院有限公司 | Structure integrating reservoir pre-discharging and ecological flow discharging |
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| SU1240824A1 (en) * | 1985-01-08 | 1986-06-30 | Тбилисское Отделение Всесоюзного Ордена Ленина Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Им.С.Я.Жука | Unit for matching spillways of hydraulic structure |
| RU2255171C1 (en) * | 2004-02-20 | 2005-06-27 | Государственное образовательное учреждение высшего профессионального образования "Северо-Западный государственный заочный технический университет" | Energy release and spillway structure for concrete dam |
| CN100392193C (en) * | 2006-08-02 | 2008-06-04 | 四川大学 | Method for rebuilding diversion tunnel to pressure expanded aerated flood-discharge tunnel |
| CN101215830B (en) * | 2007-12-29 | 2010-10-06 | 四川大学 | Vertical shaft rotational flow flood discharging tunnel and emptying tunnel or diversion tunnel vertical arrangement hydraulic structure combination |
| CN100552147C (en) * | 2008-05-23 | 2009-10-21 | 水利部交通部电力工业部南京水利科学研究院 | Reconstruction of diversion tunnel is the method for jet flow internal energy dissipating drilled shaft flood discharge hole |
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|---|---|---|---|---|
| CN102322047A (en) * | 2011-08-05 | 2012-01-18 | 四川大学 | Broken line inlet type hole plug energy dissipater |
| CN102433863A (en) * | 2012-01-11 | 2012-05-02 | 黄河勘测规划设计有限公司 | Energy dissipation pore plate for spillway tunnel |
| CN102518091A (en) * | 2012-01-11 | 2012-06-27 | 黄河勘测规划设计有限公司 | Arrangement and construction method of energy dissipation orifices in flood discharging tunnel |
| CN104005387A (en) * | 2014-05-26 | 2014-08-27 | 中国电建集团成都勘测设计研究院有限公司 | Emptying tunnel or special flood discharging tunnel arranging system and opening and closing method thereof |
| CN104005387B (en) * | 2014-05-26 | 2016-02-03 | 中国电建集团成都勘测设计研究院有限公司 | The method of emptying tunnel or very flood discharging tunnel arrangement system and opening and closing thereof |
| CN105951689A (en) * | 2016-06-30 | 2016-09-21 | 中国电建集团中南勘测设计研究院有限公司 | Structure integrating reservoir pre-discharging and ecological flow discharging |
| CN109440744A (en) * | 2018-12-24 | 2019-03-08 | 中国三峡建设管理有限公司 | A kind of fast and safely self-stabilization type diversion tunnel temporary plugging structures and methods |
| CN109440744B (en) * | 2018-12-24 | 2023-12-19 | 中国三峡建工(集团)有限公司 | Quick and safe temporary plugging structure and method for self-stabilizing diversion tunnel |
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