CN109629507B - Method for improving hydraulic flow state of diffusion type diversion pool - Google Patents
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Abstract
The invention discloses a method for improving hydraulic flow state of a diffusion type diversion pool, which is characterized in that a composite rectifying device consisting of a V-shaped bottom sill and a V-shaped combination beam with a cylindrical pier is arranged in the diffusion type diversion pool of a water inlet system of a pump gate combined construction junction. The composite rectifying device has a simple structural form, is easy to construct and manufacture, and is suitable for popularization and application in design and transformation projects of pump brake closing construction hubs with diffusion type diversion pools.
Description
Technical Field
The invention belongs to the technical field of pump gate combined construction hub engineering, and particularly relates to a method for improving the hydraulic flow state of a diffusion type diversion pool.
Background
In order to comprehensively solve the problems of flood control, waterlogging drainage, navigation, water quality improvement, ecological environment and the like of urban riverways, a large number of pump gate hub projects are built. The sluice and the pump station in the traditional pump gate pivot engineering are usually arranged separately, although the smooth connection of upstream and downstream water flows in the pivot engineering is favorable, the traditional arrangement mode is too sparse, the occupied area is large, and the problems of removal, settlement of migrants and the like are easily caused in urban water conservancy construction. The pump gate co-construction hub project is a hub arrangement form commonly adopted in plain areas due to compact arrangement and land resource saving. The pump gate co-construction arrangement mode solves the problem of large-scale land acquisition, but because the building arrangement is compact, the water inlet system of the pump gate co-construction hub is easy to generate bad flow state, especially the flow in a diversion pool in the water inlet system is disordered, so that severe spiral flow, backflow and transverse flow are easy to cause, the water inlet flow state of a pump station and a water gate is deteriorated, the drainage capacity of the water gate, the operation efficiency of the pump station and the operation stability of a machine set are reduced, and a bank slope, a protection flat and the like can be washed in serious cases, so that the safety of the pump gate co-construction project is endangered.
Disclosure of Invention
The invention aims to solve the problems and provides a method for improving the hydraulic flow state of a diffusion-type diversion pool.
In order to realize the purpose of the invention, the following technical scheme is adopted:
a method for improving the hydraulic flow state of a diffusion-type flow dividing pool is used for improving the hydraulic flow state of the flow dividing pool of a water inlet system of a pump gate building junction, the inlet side of the flow dividing pool is connected with a water inlet culvert channel, the outlet side of the flow dividing pool is connected with a forebay of the pump gate building junction, the inlet side of the flow dividing pool is connected with the water inlet culvert channel, the outlet side of the flow dividing pool is connected with the forebay of the pump gate building junction, the flow dividing pool is in a diffusion type along the main flow direction of water flow, a combined rectifying device consisting of a V-shaped sill and a V-shaped combined beam is arranged in the diffusion-type flow dividing pool, the openings of the V-shaped sill and the V-shaped combined beam face the water inlet culvert channel, the forward inflow of the diffusion-type flow dividing pool is rectified by the V-shaped sill to realize the sufficient diffusion of the water flow, the flow velocity distribution of the water flow on a plane is improved, the water flow is further adjusted by the, the hydraulic flow state in the diffusion type diversion tank is comprehensively improved, and good inflow conditions are provided for a pump gate joint construction junction;
the length of the diffusion type flow dividing pool is L, the diffusion angle is alpha, the water depth in the flow dividing pool is H, the inlet width of the diffusion type flow dividing pool is W1, and the outlet width of the diffusion type flow dividing pool is W2=2(sin (alpha/2) · L) + W1;
the V-shaped sill is arranged close to the water inlet culvert channel and comprises two bottom plates arranged in a V shape, two ends of the V-shaped sill are perpendicular to side walls on two sides of the diffusion type diversion pool respectively to ensure that the diffusion and rectification effects on passing water flow are achieved, an applicant obtains the optimal range of the size and the position of the V-shaped sill structure through a plurality of tests and numerical simulation analysis, the height H1= (0.2 ~ 0.4.4) H of each bottom plate is less than the height of the bottom plate, the deflecting effect of the bottom plate is not obvious, the height is too high, the overflowing sectional area is obviously reduced, the hydraulic loss is easily increased, a large-scale backflow area is easily generated, the width B1= (0.02 ~ 0.05) L of each bottom plate is too small, the structural strength of the bottom plate is difficult to ensure, the width is too large, the manufacturing cost is increased, the rectification effect is not obviously improved, the distance between the center point O of the V-shaped sill and the inlet of the diffusion type diversion pool is L1 (0.1 ~ 0.3.3) L, and the distance between the bottom sill is too close distance and the inlet of the diversion pool;
the V-shaped combination beam is arranged close to the front pool, two ends of the V-shaped combination beam are respectively perpendicular to side walls on two sides of the diffusion type diversion pool to ensure that diffusion rectification effect on passing water flow is achieved, an applicant obtains a preferable range of the structure size and the position of the V-shaped combination beam through a plurality of tests and numerical simulation analysis, the V-shaped combination beam comprises a plurality of layers of transverse beams which are vertically arranged and cylindrical piers which are arranged at the lower part of the transverse beam on the bottommost layer, the transverse beams on each layer are arranged in a V shape, openings of the transverse beams face a water inlet culvert channel, the number of the transverse beams N1=2 ~, the number of the transverse beams is too small, rectification effect is affected, the number of the transverse beams is too large, the flow cross section is significantly reduced, large hydraulic loss is caused, the width of the transverse beams is B2= (0.02 ~.05) L, the width of the transverse beams is too small, the structural strength and the width of the transverse beams are difficult to ensure, the manufacturing cost is increased, the improvement on the flow effect is not obvious, the single-layer transverse beam height H2= (0.1 ~.2) H, the height of the transverse beams is not significantly reduced, the effect, the height of the transverse beam is significantly reduced, the diffusion diversion pool, the distance of the diffusion type diversion pool is significantly reduced, the diffusion diversion pool is significantly reduced, the distance of the adjacent diffusion diversion pool is significantly reduced, the diffusion diversion pool is not too small cross section, the distance of the V-shaped combination beam, the diffusion diversion pool is not too large diversion pool, the;
the cylindrical piers are located at the lower part of the cross beam at the bottommost layer, the applicant obtains the preferable range of the structure size and the position of the cylindrical piers through a plurality of tests and numerical simulation analysis, the height H4= (0.1 ~ 0.3) H of the cylindrical piers, the top of the cylindrical piers is connected with the lower part of the cross beam, the overflow of bottom water is influenced when the height of the cylindrical piers is too low, the flow rectification effect of the V-shaped combination beam is influenced when the height of the cylindrical piers is too high, the flow cross section area of the V-shaped combination beam is excessively reduced, one of the cylindrical piers is located at the center of the V-shaped combination beam, the rest of the cylindrical piers are symmetrically arranged along the center line of the V-shaped combination beam, the distance W3= (0.2 389;
preferably, the V-shaped bottom ridge, the V-shaped combination beam and the cylindrical pier are of reinforced concrete structures, so that the combined type rectifying device can meet the design, construction and use requirements of pump station co-construction hub engineering.
As a preferred embodiment, the length L of the divergent flow cell is 40m, the divergence angle α is 30 °, the depth of water in the divergent flow cell H is 5m, the inlet width W1 of the divergent flow cell is 5m, the outlet width W2 of the divergent flow cell is 25.706m, the height H1 of the bottom plate is 1m, the width B1 of the bottom plate is 0.8m, the distance L1 from the V-sill center point O to the divergent flow cell inlet is 12m, the number N1 of the beams is 4, the width B2 of the beams is 0.8m, the height H2 of the beams in a single layer is 0.5m, the distance H3 between two adjacent layers of beams is 0.5m, the distance L2 from the V-combination beam center point P to the divergent flow cell inlet is 20m, the height H4 of the cylindrical pier is 0.5m, the cross-sectional diameter D of the cylindrical pier is 0.8m, the number N2 of the cylindrical piers is 11 and N is 5, and the distance W3 between two adjacent cylindrical piers is 1 m.
As another preferred embodiment, the length L of the divergent flow cell is 40m, the divergence angle α is 30 °, the depth of water in the divergent flow cell H is 5m, the inlet width W1 of the divergent flow cell is 5m, the outlet width W2 of the divergent flow cell is 25.706m, the height H1 of the bottom plate is 1.5m, the width B1 of the bottom plate is 1.2m, the distance L1 from the V-sill center point O to the divergent flow cell inlet is 8m, the number of beams N1 is 3, the width B2 of the beams is 1.2m, the height H2 of the beam of a single layer is 0.8m, the distance H3 between two adjacent layers of beams is 1m, the distance L2 from the V-combination beam center point P to the divergent flow cell inlet is 24m, the height H4 of the cylindrical pier is 1m, the cross-sectional diameter D of the cylindrical pier is 1.2m, the number N2 of the cylindrical piers is 7 and N is 3, and the distance W3 between two adjacent cylindrical piers is 1.5 m.
As another preferred embodiment, the length L of the divergent flow cell is 40m, the divergence angle α is 30 °, the depth of water in the divergent flow cell H is 5m, the inlet width W1 of the divergent flow cell is 5m, the outlet width W2 of the divergent flow cell is 25.706m, the height H1 of the bottom plate is 2m, the width B1 of the bottom plate is 2m, the distance L1 from the V sill center point O to the divergent flow cell inlet is 4m, the number of beams N1 is 2, the width B2 of the beams is 2m, the height H2 of a single-layer beam is 1m, the distance H3 between two adjacent layers of beams is 1.5m, the distance L2 from the V combination beam center point P to the divergent flow cell inlet is 28m, the height H4 of a cylindrical pier is 1.5m, the cross-sectional diameter D of the cylindrical pier is 2m, the number N2 of the cylindrical pier is 3 and N is 1, and the distance W3 between two adjacent cylindrical piers is 2 m.
The invention has the beneficial effects that:
the method for improving the hydraulic flow state of the diffusion type diversion pool comprises the steps of arranging a V-shaped bottom ridge in the diffusion type diversion pool of a water inlet system of a pump brake combined construction junction, rectifying forward inflow of the diffusion type diversion pool by utilizing the V-shaped bottom ridge to achieve full diffusion of water flow, improving flow velocity distribution of the water flow on a plane, arranging a V-shaped combination beam with a cylindrical pier behind the V-shaped bottom ridge, further adjusting the water flow by the V-shaped combination beam with the cylindrical pier, homogenizing the flow velocity distribution of the water flow on a vertical surface and the flow velocity distribution of the water flow on the plane of the pool bottom, and achieving the purpose of comprehensively improving the hydraulic flow state in the diffusion type diversion pool, so that good inflow conditions are provided for the pump brake combined construction junction, and important engineering application value is achieved for ensuring safe, stable and efficient operation of the pump brake combined construction junction.
The invention has simple structure and easy construction and manufacture, and is suitable for popularization and application in the design and transformation engineering of the pump brake closing and building hub with the diffusion type diversion pool.
Drawings
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic plan view of the dimensions of an embodiment of the present invention;
FIG. 3 is a schematic diagram of the dimensions of an elevational structure according to an embodiment of the invention;
FIG. 4 is a comparison graph of the uneven distribution coefficient of the vertical average flow velocity of the cross section of the outlet of the diffusion-type flow splitting cell before and after rectification according to the embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 ~ 3, the present invention relates to the technical features of a diffusion type diversion basin 1, a water intake culvert 2, a pump gate hub forebay 3, a V-shaped sill 4, a V-shaped composite beam 5, a cylindrical pier 6, etc.
A method for improving hydraulic flow state of a diffusion-type diversion pool comprises that a diversion pool 1 of a water inlet system of a pump gate combined construction junction is in a diffusion type along the main flow direction of water flow, the inlet side of the diversion pool 1 is connected with a water inlet culvert channel 2, the outlet side of the diversion pool is connected with a forebay 3 of the pump gate combined construction junction, by arranging the composite rectifying device consisting of the V-shaped bottom sill 4 and the V-shaped composite beam 5 with the cylindrical pier 6 in the diffusion type flow dividing tank 1, the V-shaped bottom sill 4 is utilized to rectify the forward inflow of the diffusion type flow dividing tank 1 so as to realize the full diffusion of water flow and improve the flow velocity distribution of the water flow on a plane, the water flow is further adjusted through the V-shaped combination beam 5 with the cylindrical pier 6, the flow velocity distribution of the water flow on the vertical surface and the flow velocity distribution of the water flow at the bottom of the pool on the plane are homogenized, the hydraulic flow state in the diffusion type diversion pool 1 is comprehensively improved, and good inflow conditions are provided for a pump brake combined construction hub;
the length of the diffusion type flow-dividing tank 1 is L, the diffusion angle is alpha, the water depth in the diffusion type flow-dividing tank 1 is H, the inlet width of the diffusion type flow-dividing tank 1 is W1, and the outlet width is W2=2(sin (alpha/2) · L) + W1;
the two ends of the V-shaped sill 4 are respectively perpendicular to the side walls of the two sides of the diffusion type flow distribution pool 1, the V-shaped sill comprises two bottom plates which are arranged in a V shape, the height H1= (0.2 ~ 0.4.4) H and the width B1= (0.02 ~ 0.05.05) L of each bottom plate, and the distance between the central point O of the V-shaped sill 4 and the inlet of the diffusion type flow distribution pool 1 is L1= (0.1 ~ 0.3) L;
the two ends of the V-shaped combined beam 5 are respectively perpendicular to the side walls on the two sides of the diffusion type diversion pool 1, the V-shaped combined beam 5 comprises a plurality of layers of cross beams which are vertically arranged, each layer of cross beams is arranged in a V shape, the number N1=2 ~ 4, the width B2= (0.02 ~ 0.05.05) L of the cross beams, the height H2= (0.1 ~ 0.2.2) H of a single-layer cross beam, the distance H3 between every two adjacent layers of cross beams is (0.1 ~ 0.3.3) H, and the distance L2= (0.5 ~ 0.7.7) L from the central point P of the V-shaped combined beam to the inlet of the diffusion type diversion pool;
the cylindrical piers 6 are located at the lower part of the bottommost cross beam of the V-shaped composite beam 5, the height H4= (0.1 ~ 0.3.3) H of the cylindrical piers 6 is connected with the lower part of the bottommost cross beam of the V-shaped composite beam 5, the section diameter D of the cylindrical piers 6 meets D = B2, the number N2 of the cylindrical piers 6 meets N2=2N +1 and N =1 ~ 5, the middle one cylindrical pier is located at the central point of the V-shaped composite beam 5, the other cylindrical piers are symmetrically arranged along the central line of the V-shaped composite beam 5, and the distance W3= (0.2 ~ 0.4) W1 between every two adjacent cylindrical piers.
The V-shaped bottom ridge 4, the V-shaped combination beam 5 and the cylindrical pier 6 are of reinforced concrete structures, and can be cast and formed on the site of pump station co-construction pivot engineering construction or transformation.
Example 1
The schematic drawings of the planar and vertical structural dimensions of the diffusion-type flow-dividing cell with the composite rectifying device of the present invention are shown in fig. 2 and 3.
The length L =40m, the diffusion angle α =30 °, the depth of water H =5m in the flow cell, the width W1=5m of the inlet of the diffusion cell, the width W2=25.706m of the outlet, the height H1=0.2H =1m of the floor, the width B1=0.02L =0.8m of the diffusion cell, the distance L1=0.3L =12m of the V-sill centre point O from the inlet of the diffusion cell, the number N1=4 of the beams, the width B2=0.02L =0.8m of the beams, the height H2=0.1H =0.5m of the beams in a single layer, the distance H3=0.1H =0.5m of the beams in two adjacent layers, the distance L2=0.5L =20m of the centre point P of the V-combination beam from the inlet of the diffusion cell, the height H4= 0.5H =0.5m of the cylindrical pier, the distance W =8m of the cylinder in a section =8m of the cylinder, and the distance W828 m of the cylinder pier in two adjacent layers; the V-shaped bottom ridge, the V-shaped combination beam and the cylindrical pier are of reinforced concrete structures.
Example 2
The composite rectifying device of the present embodiment is different from embodiment 1 in that: the height H1=0.3H =1.5m, the width B1=0.03L =1.2m, the distance between the V-sill center point O and the inlet of the diffusion-type flow distribution cell L1=0.2L =8m, the number of cross beams N1=3, the width B2=0.03L =1.2m, the height H2=0.16H =0.8m of the cross beam of a single layer, the spacing H3=0.2H =1m of the cross beams of two adjacent layers, the distance between the center point P of the V-shaped combination beam and the inlet of the diffusion-type flow distribution cell L2=0.6L =24m, the height H4=0.2H =1m of the cylindrical pier, the section diameter D = B2=1.2m of the cylindrical pier, the number N2=7 and N =3, and the spacing W3=0.3W1=1.5m of the adjacent two cylindrical piers.
Example 3
The composite rectifying device of the present embodiment is different from embodiments 1 and 2 in that: the height H1=0.4H =2m, the width B1=0.05L =2m, the distance between the V-sill center point O and the inlet of the diffusion-type flow cell L1=0.1L =4m, the number of cross beams N1=2, the width B2=0.05L =2m, the height H2=0.2H =1m of the cross beam of a single layer, the distance between the cross beams of two adjacent layers H3=0.3H =1.5m, the distance between the center point P of the V-shaped combination beam and the inlet of the diffusion-type flow cell L2=0.7L =28m, the height H4=0.3H =1.5m of the cylindrical pier, the section diameter D = B2=2m of the cylindrical pier, the number N2=3 and N =1 of the cylindrical pier, and the distance between the two adjacent cylindrical piers W3=0.4W1=2 m.
As shown in FIG. 4, a three-dimensional flow numerical simulation method is used to compare and analyze the vertical average flow velocity distribution of the exit section of the front and rear diffusion-type flow splitting cell using the composite rectifying device of the above embodiment of the present invention, wherein the flow velocity distribution has a non-uniform coefficientK=(V max－V min)/V aveWhereinV max、V minAndV averespectively representing the maximum speed, the minimum speed and the average speed of the vertical average flow velocity of the outlet section of the flow dividing pool along the transverse distribution and the uneven flow velocity distribution coefficientKThe closer the value is to 0, the more uniform the flow velocity distribution of the water flow at the outlet of the diversion pool is, the better the uniformity of the inflow of the forebay of the pump gate closing construction hub is. As can be seen from fig. 4, the flow velocity distribution at the outlet of the diversion pool after rectification by the combined type rectification device of the invention becomes uniform, which proves that the combined type rectification device provided by the invention can significantly improve the hydraulic flow state of the diffusion type diversion pool, and is helpful to ensure that the pump gate combined construction hub has good inflow conditions, so that the pump gate combined construction hub project can safely, reliably and stably operate.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the spirit and scope of the invention.
Claims (4)
1. A method for improving the hydraulic flow state of a diffusion type diversion pool is used for improving the hydraulic flow state of the diversion pool of a pump gate combined construction junction water inlet system, the inlet side of the diversion pool is connected with a water inlet culvert channel, and the outlet side of the diversion pool is connected with a forebay of a pump gate combined construction junction, and is characterized in that: the flow distribution tank is in a diffusion type along the main flow direction of water flow, a composite rectifying device consisting of a V-shaped bottom ridge and a V-shaped combination beam is arranged in the diffusion type flow distribution tank, the openings of the V-shaped bottom ridge and the V-shaped combination beam face a water inlet culvert channel, forward inflow of the diffusion type flow distribution tank is rectified by utilizing the V-shaped bottom ridge to realize full diffusion of the water flow, the flow velocity distribution of the water flow on a plane is improved, the water flow is further adjusted by the V-shaped combination beam, the flow velocity distribution of the water flow on a vertical surface and the flow velocity distribution of the water flow at the bottom of the tank on the plane are homogenized, and the hydraulic flow state in the diffusion type flow;
the length of the diffusion type flow dividing pool is L, the diffusion angle is alpha, the water depth in the flow dividing pool is H, the inlet width of the diffusion type flow dividing pool is W1, and the outlet width of the diffusion type flow dividing pool is W2=2(sin (alpha/2) · L) + W1;
the V-shaped bottom sill is arranged close to the water inlet culvert channel, two ends of the V-shaped bottom sill are respectively vertical to side walls on two sides of the diffusion type diversion pool, the V-shaped bottom sill comprises two bottom plates which are arranged in a V shape, the height H1= (0.2 ~ 0.4.4) H and the width B1= (0.02 ~ 0.05.05) L of each bottom plate, and the distance L1= (0.1 ~ 0.3.3) L from the central point O of the V-shaped bottom sill to the inlet of the diffusion type diversion pool;
the V-shaped combination beam is arranged close to the front pool, two ends of the V-shaped combination beam are respectively vertical to side walls on two sides of the diffusion type diversion pool, the V-shaped combination beam comprises a plurality of layers of transverse beams which are vertically arranged and cylindrical piers arranged at the lower part of the transverse beam on the bottommost layer, the transverse beams on each layer are arranged in a V shape, openings of the transverse beams face water inlet culvert channels, the number N1=2 ~ 4 of the transverse beams is N, the width B2= (0.02 ~ 0.05.05) L of the transverse beams, the height H2= (0.1 ~ 0.2.2) H of the transverse beams on a single layer is H3 between every two adjacent layers of transverse beams is (0.1 ~ 0.3.3) H, and the distance L2= (0.5 ~ 0.7.7) L between the central point P of the V-shaped combination beam and the inlet of the diffusion type diversion pool;
the height H4= (0.1 ~ 0.3.3) H of the cylindrical piers, the top of each cylindrical pier is connected with the lower portion of the bottom layer cross beam, the section diameter D of each cylindrical pier meets D = B2, the number N2 of the cylindrical piers meets N2=2N +1 and N =1 ~ 5, one cylindrical pier is located at the center point of the V-shaped combination beam, the other cylindrical piers are symmetrically arranged along the center line of the V-shaped combination beam, the distance W3= (0.2 ~ 0.4) W1 between every two adjacent cylindrical piers, the V-shaped sill, the V-shaped combination beam and the cylindrical piers are all of reinforced concrete structures, and pouring forming can be carried out on the site of pump station building pivot engineering construction or transformation.
2. The method for improving the hydraulic flow state of the diffusion-type flow dividing pool as claimed in claim 1, wherein: the length L of the diffusion type diversion pool is 40m, the diffusion angle alpha is 30 degrees, the water depth H in the diversion pool is 5m, the inlet width W1 of the diffusion type diversion pool is 5m, the outlet width W2 of the diffusion type diversion pool is 25.706m, the height H1 of the bottom plate is 1m, the width B1 of the bottom plate is 0.8m, the distance L1 from the center point O of the V-shaped sill to the inlet of the diffusion type diversion pool is 12m, the number N1 of the cross beams is 4, the width B2 of the cross beams is 0.8m, the height H2 of a single-layer cross beam is 0.5m, the distance H3 of two adjacent layers of cross beams is 0.5m, the distance L2 from the center point P of the V-shaped combination beam to the inlet of the diffusion type diversion pool is 20m, the height H4 of a cylindrical pier is 0.5m, the section diameter D of the cylindrical pier is 0.8m, the number N2 of the cylindrical piers is 11, the distance W3 of two adjacent.
3. The method for improving the hydraulic flow state of the diffusion-type flow dividing pool as claimed in claim 1, wherein: the length L of the diffusion type flow distribution pool is 40m, the diffusion angle alpha is 30 degrees, the water depth H in the flow distribution pool is 5m, the inlet width W1 of the diffusion type flow distribution pool is 5m, the outlet width W2 of the diffusion type flow distribution pool is 25.706m, the height H1 of the bottom plate is 1.5m, the width B1 of the bottom plate is 1.2m, the distance L1 from the center point O of the V-shaped sill to the inlet of the diffusion type flow distribution pool is 8m, the number N1 of the cross beams is 3, the width B2 of the cross beams is 1.2m, the height H2 of a single-layer cross beam is 0.8m, the distance H3 between two adjacent layers of cross beams is 1m, the distance L2 from the center point P of the V-shaped combination beam to the inlet of the diffusion type flow distribution pool is 24m, the height H4 of the cylindrical pier is 1m, the section diameter D of the cylindrical pier is 1.2m, the number N2 of the cylindrical piers is 7, and N is 3.
4. The method for improving the hydraulic flow state of the diffusion-type flow dividing pool as claimed in claim 1, wherein: the length L of the diffusion type flow distribution pool is 40m, the diffusion angle alpha is 30 degrees, the water depth H in the flow distribution pool is 5m, the inlet width W1 of the diffusion type flow distribution pool is 5m, the outlet width W2 of the diffusion type flow distribution pool is 25.706m, the height H1 of the bottom plate is 2m, the width B1 of the bottom plate is 2m, the distance L1 from the center point O of the V-shaped bottom sill to the inlet of the diffusion type flow distribution pool is 4m, the number N1 of the cross beams is 2, the width B2 of the cross beam is 2m, the height H2 of a single-layer cross beam is 1m, the distance H3 between two adjacent layers of cross beams is 1.5m, the distance L2 from the center point P of the V-shaped combination beam to the inlet of the diffusion type flow distribution pool is 28m, the height H4 of the cylindrical pier is 1.5m, the section diameter D of the cylindrical pier is 2m, the number N2 of the cylindrical piers is 3 and N.
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| CN111139801A (en) * | 2020-01-17 | 2020-05-12 | 华北水利水电大学 | Interactive hydraulic rectification energy dissipation system and hydraulic rectification method |
| CN112154945B (en) * | 2020-09-28 | 2022-09-06 | 水利部中国科学院水工程生态研究所 | Construction method suitable for spawning ground of muco-sinker oviparous fishes in acute abortion |
| CN113266057B (en) * | 2021-06-16 | 2022-07-15 | 清华大学 | Adjustable pump station water intake device |
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| CN102312465B (en) * | 2010-07-06 | 2014-03-05 | 中国核电工程有限公司 | Short radius and spacing intake tunnel pump room of nuclear power station |
| CN202127178U (en) * | 2011-01-12 | 2012-01-25 | 宁夏力成电气集团有限公司 | Dustproof sealing ventilating structure of box-type substation |
| CN201943053U (en) * | 2011-01-24 | 2011-08-24 | 中国水电顾问集团华东勘测设计研究院 | Flow-guiding and flood-discharging hole structure |
| CN104594309A (en) * | 2015-01-28 | 2015-05-06 | 华北水利水电大学 | Spaced staggered reverse deflecting flow energy dissipation hydraulic rectifying device and method |
| CN105672119B (en) * | 2016-01-14 | 2018-05-11 | 中铁大桥勘测设计院集团有限公司 | A kind of collision prevention girders and the anticollision device, collision-prevention device with collision prevention girders |
| CN106930199B (en) * | 2017-02-24 | 2019-02-12 | 河海大学 | Improve the fairing of arc Box-shaped Drainage Culvert water outlet fluidised form |
| CN106958235B (en) * | 2017-03-29 | 2019-04-02 | 福建省水利水电勘测设计研究院 | A kind of Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater |
| CN107327010B (en) * | 2017-07-28 | 2019-06-07 | 河海大学 | A method of improving the porous pumping plant Inlet flow pattern that becomes a mandarin |
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