CN113914416A - Anti-freezing and anti-blocking water taking system for sediment-laden river - Google Patents
Anti-freezing and anti-blocking water taking system for sediment-laden river Download PDFInfo
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- CN113914416A CN113914416A CN202111313097.8A CN202111313097A CN113914416A CN 113914416 A CN113914416 A CN 113914416A CN 202111313097 A CN202111313097 A CN 202111313097A CN 113914416 A CN113914416 A CN 113914416A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
- E02B5/085—Arresting devices for waterborne materials, e.g. gratings
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
Abstract
The invention belongs to the technical field of hydraulic engineering, and particularly relates to an anti-freezing anti-blocking water taking system for a sediment-laden river, wherein a midstream water taking area comprises a retaining wall, an entity overflow dam section, a water collecting gallery cavity overflow dam section and a bottom grid water taking dam section, and the bottom grid water taking dam section is arranged between the entity overflow dam section and the water collecting gallery cavity overflow dam section; the part of the midstream water taking area, which is higher than the upstream seepage-proofing paving area and the downstream flat protecting area, is divided into an upstream surface, an interlayer part and a revetment; the interlayer part of the bottom grid water taking dam section is a grid and a cavity to form a bottom grid water collecting gallery, and the interlayer part of the water collecting gallery cavity overflow dam section is a cover plate and a cavity to form a cavity overflow dam section water collecting gallery; the bottom grid barrier water collecting gallery is communicated with the cavity overflow dam section water collecting gallery, is in a longitudinal slope structure from high to low, and is guided into a water conduit arranged at the retaining wall; not only can ensure water intake in winter, but also can save investment, and has the advantages of freezing prevention and blocking prevention.
Description
Technical Field
The invention belongs to the technical field of hydraulic engineering, and relates to a water diversion and water taking technology in hydraulic engineering.
Background
In the severe cold regions of the southwest mountain area, the stream ditch has high altitude, the river bed is narrow, the water depth is shallow, the longitudinal slope of the river bed is large, the bed load is more, the flow is unstable, and the ice easily occurs in winter. Wherein end check barrier water intaking shortcoming: firstly, in alpine mountain areas, the flow of rivers in winter is small in the dry season, and grids of the bottom grid dam are easy to freeze and cannot take water; secondly, the barrier is easy to be blocked by the pusher mass or the suspended matter. The drawback of water intaking in the infiltration canal: the water yield in the dry period is about 50-60% or even less of that in the rich period, and the water intake is extremely unstable; the infiltration channel water taking is suitable for rivers or creeks with clear mud content, but the mountainous rivers in alpine mountainous areas have larger seasonal change, the water quality of the rivers in flood seasons has larger mud content, and the infiltration channels on the creek ditches in the mountainous areas are often required to be additionally provided with erosion resistant rock due to shallow burying and weak erosion resistant capacity, so that the possibility of silting is increased, and even the required water cannot be taken; the water intake of the infiltration channel is reduced along with the increase of the service life, the designed water consumption can be obtained by the infiltration channel, the infiltration channel must be cleaned regularly and irregularly, a filter material is replaced, and the later operation cost of the infiltration channel is higher. The water taking hub for taking the small flow of the alpine mountain stream water in winter becomes a technical problem which needs to be solved urgently in local.
Disclosure of Invention
In order to solve the problems in the prior art, the invention develops an anti-freezing and anti-blocking water taking system for a sediment-laden river, which can ensure water taking in winter, save investment and have the advantages of freezing prevention and blocking prevention.
The invention adopts the technical scheme that the anti-freezing and anti-blocking water taking system for the sediment-laden river comprises an upstream anti-seepage covering area, a midstream water taking area and a downstream flat protecting area which are arranged along the water flow direction, wherein the midstream water taking area comprises a retaining wall, an entity overflow dam section, a water collecting gallery cavity overflow dam section and a bottom grid barrier water taking dam section;
the part of the midstream water taking area, which is higher than the upstream seepage-proofing paving area and the downstream apron area, is of a right-angle trapezoidal structure with a narrow upper part and a wide lower part, the rectangular part of the right-angle trapezoidal structure is divided into an upstream surface and an interlayer part along the water flow direction, and the triangular part is a revetment;
the interlayer part of the bottom grid water intake dam section is a grid and a cavity to form a bottom grid water collecting gallery,
the interlayer part of the cavity overflow dam section of the water collection gallery is a cover plate and a cavity to form a cavity overflow dam section water collection gallery; the bottom grid barrier water collecting gallery is communicated with the cavity overflow dam section water collecting gallery to form a water collecting gallery, and the bottom of the water collecting gallery is a longitudinal slope from high to low and is led into a water conduit arranged at the retaining wall;
the upstream surface of end grid barrier water intaking dam section and catchment corridor cavity overflow dam section has buried catchment seepage flow pipe underground, catchment seepage flow pipe lay the scope do, the minimum one deck catchment seepage flow pipe tube bottom elevation is higher than maintenance phase silt siltation elevation, the highest one deck catchment seepage flow pipe tube crest elevation is less than below the ice cap layer.
The water collecting seepage pipe is arranged in a quincunx shape, a flow velocity meter is arranged in the water collecting seepage pipe, a filter screen is arranged on one side of the upstream face of the water collecting gallery cavity overflow dam section and the bottom lattice barrier water taking dam section, the two sides of the filter screen are both connected with a crawler, and the crawler is driven by two groups of tensioning gears arranged on the upstream face of the water collecting gallery cavity overflow dam section and the bottom lattice barrier water taking dam section.
The inner diameter of the outlet of the water collecting seepage pipe is 1.2-1.5 times of the inner diameter of the inlet of the pipe.
The shape of the grid is a trapezoidal grid, the width range of the grid is 1.2-2.5cm, and the height of the grid is 3-4 times of the width of the grid.
The gate gap of the barrier is 1-2 cm.
And an L-shaped groove is formed in the mounting position of the barrier.
The other end of the water conduit is provided with a grit chamber, and two branch pipelines led out from the grit chamber are respectively a blow-down pipe and a water delivery pipe.
A gate valve well is arranged in front of the grit chamber, and a manual ball valve or a hydraulic remote control ball float valve is arranged in the gate valve well.
The bottom of the grit chamber is obliquely provided with a spiral sand discharge pipe, and the included angle between the spiral sand discharge pipe and the side edge of the grit chamber is 30-60 degrees; the cross section of the spiral sand discharge pipe is open, the front edge is low, the rear edge is high, and the two edges are respectively flush with the bottom surface of the grit chamber and divide the grit chamber into two parts.
An overflow pipe is arranged above the water level of the grit chamber.
In order to enhance the adaptability of the invention to lower environmental temperature, the structure of the invention also comprises an anti-freezing system, and the anti-freezing system comprises an active heating device for carrying out radiation heating on the inner cavity of the water collecting gallery and a barrier rotation control device linked with the barrier.
The active heating device comprises a workbench arranged at the top of the overflow dam section of the cavity of the water collecting gallery, a power supply embedded in the workbench, an electric heating device arranged at the top of the workbench and a heat exchange pipeline connecting the water collecting gallery and the electric heating device, wherein the power supply is powered by a power supply grid, a solar power generation plate arranged outside the water collecting gallery and a hydraulic generator arranged on a longitudinal slope at the bottom of the water collecting gallery in a cooperative manner;
the barrier rotation control device comprises rotating shafts arranged at two ends of the barrier, driven gears arranged at the end parts of the rotating shafts, racks meshed with the driven gears, tracks used for limiting the motion tracks of the racks, driving gears used for driving the racks to move and driving motors connected with the driving gears in a shaft mode, wherein the driving motors are electrically connected with the power supply.
Be provided with illumination reflect meter on the wall, illumination reflect meter includes the support frame and sets up angle adjuster on the support frame and fix the reflector on angle adjuster, and angle adjuster is including setting up 3 electric putter on the support frame, and the back of support frame and reflector is connected through bulb articulated mode respectively at electric putter both ends.
The present invention will be described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a floor plan of the present invention;
FIG. 2 is an upstream elevational view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 2;
fig. 6 is a schematic structural view of the grit chamber 12 and the spiral sand discharging pipe 16 in fig. 1;
FIG. 7 is a cross-sectional view M-M of FIG. 6;
FIG. 8 is a cross-sectional view of the active temperature increasing device of the present invention taken perpendicular to the direction of water flow;
FIG. 9 is a side view of the boom rotation control apparatus of the present invention;
FIG. 10 is a perspective view of the light reflection unit according to the present invention;
FIG. 11 is a schematic view of the operating condition of the filter screen of the present invention;
FIG. 12 is a schematic view of the filter screen of the present invention showing the cleaning state of impurities.
Detailed Description
As shown in fig. 1-5, the anti-freezing and anti-blocking water intake system for a sediment-laden river comprises an upstream anti-seepage paved area 1, a midstream water intake area and a downstream flat protecting area 3 which are arranged along the water flow direction, wherein the midstream water intake area comprises a retaining wall 7, an entity overflow dam section 4, a water collecting gallery cavity overflow dam section 5 and a bottom lattice barrier water intake dam section 6, the bottom lattice barrier water intake dam section 6 is arranged between the entity overflow dam section 4 and the water collecting gallery cavity overflow dam section 5, and sand gravel is backfilled 19 between the retaining wall 7 and a river bank;
the part of the midstream water taking area, which is higher than the upstream seepage-proofing paving area 1 and the downstream apron area 3, is of a right-angle trapezoid structure with a narrow upper part and a wide lower part, the rectangular part of the right-angle trapezoid is divided into an upstream surface and an interlayer part along the water flow direction, and the triangular part is a revetment;
the interlayer part of the bottom grid barrier water intake dam section 6 is a barrier 18 and a cavity to form a bottom grid barrier water collecting gallery 8, and the interlayer part of the water collecting gallery cavity overflow dam section 5 is a cover plate and a cavity to form a cavity overflow dam section water collecting gallery 9; the bottom grid barrier water collecting gallery 8 is communicated with a cavity overflow dam section water collecting gallery 9 to form a water collecting gallery, and the water collecting gallery is a longitudinal slope 2 at the bottom of the water collecting gallery from high to low and is led into a water conduit 10 arranged at the retaining wall 7;
bottom grid barrier water intaking dam section 6 and catchment corridor cavity overflow dam section 5 the upstream face have buried catchment and ooze the flow pipe 11 underground, catchment and ooze the flow pipe 11 and lay the scope and do, 11 socle elevations of the lowest one deck catchment and ooze the flow pipe are higher than maintenance phase silt siltation elevation, 11 socle elevations of the highest one deck catchment and ooze the flow pipe are less than below the cap layer, 11 pipe diameters of catchment and ooze the flow pipe and the radical is confirmed through hydraulic calculation according to the inflow.
Referring to fig. 2, 11 and 12, the water collecting seepage pipe 11 is arranged in a quincunx shape, a flow meter is arranged in the water collecting seepage pipe 11, a filter screen 41 is arranged on one side of the water-facing surface of the water collecting gallery cavity overflow dam section 9 and the bottom lattice barrier water taking dam section 8, two sides of the filter screen 41 are both connected with a crawler 40, and the crawler 40 is driven by two groups of tensioning gears 39 arranged on the water-facing surface of the water collecting gallery cavity overflow dam section 9 and the bottom lattice barrier water taking dam section 8. When the river water is abundant in summer, more sundries are easy to generate, the filter screen 41 can filter the sundries in the water to avoid blocking a pipe inlet of the water collecting seepage pipe 11, when more sundries are retained on the filter screen 41, the flow velocity meter detects that the flow velocity is lower than the designed flow velocity, the filter screen 41 is considered to be too much sundries and needs to be cleaned, the specific cleaning step is to start the tensioning gear 39 to drive the crawler belt 40, the crawler belt 40 drives the filter screen 41 to firstly rise, then the filter screen 41 rotates to the horizontal position at the top position of the tensioning gear 39 by 90 degrees, the sundries on the filter screen 41 are washed away by the river water, and finally the tensioning gear 30 is reversely rotated to vertically rotate the filter screen 41 and descend to the water.
The inner diameter of the outlet of the water collecting seepage pipe 11 is 1.2-1.5 times of the inner diameter of the inlet of the water collecting seepage pipe, so that the structure with gradually changed pipe diameters can prevent impurities such as pebbles and the like from being blocked in the middle of the pipeline of the water collecting seepage pipe 11.
The shape of the barrier 18 is a trapezoid barrier, because the trapezoid barrier is equivalent to an expanded cylindrical nozzle, vacuum caused by outflow contraction of the nozzle has suction capacity, and as a result, the flow rate of water flowing through the barrier gap is increased, so that the flow rate of the trapezoid barrier under the same barrier gap is larger; the width range of the grid bars is 1.2-2.5cm, the width of the grid bars must ensure the transverse rigidity of the grid bars, and the deformation caused by grid clamping cannot occur; the height of the grid bars is 3-4 times of the width of the grid bars so as to ensure that the nozzle outflow is approximately formed during overcurrent, thereby increasing the overcurrent.
The gate gap of the gate 18 is 1-2cm, the width of the gate gap depends on the size of the sand grain size which limits the sand entering the corridor, and the gate gap can limit about 80% of the total amount of the incoming sand in the natural river channel. Too large grid gaps are large in amount of gravels entering the water diversion gallery, large water quantity and high flow rate are needed for flushing away the gravels, and too small grid clamping probability is increased, so that trouble is brought to operation management.
From the angle that sound construction, overflow smoothly, the operation is reliable, the management is convenient, 18 mounted positions of barrier be provided with L type groove, it is all very convenient to the installation of grid, maintenance and dismantlement, can guarantee moreover that to overflow smoothly, the operation is reliable.
Referring to fig. 1, 6 and 7 again, a grit chamber 12 is arranged at the other end of the water conduit 10, and two branch conduits led out from the grit chamber 12 are a blow-down pipe 13 and a water conduit pipe 14 respectively.
A gate valve well 15 is arranged in front of the grit chamber 12, and a manual ball valve or a hydraulic remote control ball float valve is arranged in the gate valve well 15.
A gate valve well 15 is arranged at the joint of the grit chamber 12 and the water conveying pipe 14, and a manual ball valve or a hydraulic remote control ball float valve is arranged in the gate valve well 15.
The bottom of the grit chamber 12 is obliquely provided with a spiral sand discharge pipe 16, the included angle between the spiral sand discharge pipe and the side edge of the grit chamber 12 is 30-60 degrees, the included angle is too large, so that the accumulation of silt is easily caused, the included angle is too small, the sand discharge speed is slow, and the sand discharge efficiency is influenced; the cross section of the spiral sand discharge pipe 16 is open, the front edge is low, the rear edge is high, and the two edges are respectively flush with the bottom surface of the grit chamber 12 and divide the grit chamber 12 into two parts.
The opening angle of the spiral sand discharge pipe 16 is 80-100 degrees, and the opening is too small, so that the sand and the mud are easy to enter the pipe orifice and block and mutually impact with each other; the silt discharged when the opening is too large and the flow velocity is small directly falls back to the spiral silt discharging pipe 16, so that the silt is deposited. The included angle between the rear edge and the horizontal line is 70-90 degrees, the opening angle is unchanged, the included angle is too small, the central point of the opening falls, and the spiral sand discharge pipe 16 is buried deeper, so that the removal of silt is not facilitated; the contained angle is too big, and the opening central point rises, and spiral sediment outflow pipe 16 buries shallowly, and the route that silt was got rid of becomes long, and the velocity of flow that needs is great, is unfavorable for the low discharge water intaking.
The inner diameter is 500-700mm according to the flow velocity, the grain diameter of the sediment, the width of the grit chamber 12 and the like.
The junction of the spiral sand discharge pipe 16 and the emptying pipe 13 is provided with a gate valve well 15, and a manual ball valve or a hydraulic remote control ball float valve is arranged in the gate valve well 15.
The inner layer of the spiral sand discharge pipe 16 is provided with a lining steel plate 20.
An overflow pipe 17 is arranged above the water level of the grit chamber 12.
Referring to fig. 8 and 9, in order to enhance the adaptability of the invention to lower ambient temperature, the structure of other embodiments of the invention further comprises an antifreezing system, wherein the antifreezing system comprises an active temperature increasing device for heating the inner cavity of the water collecting gallery and a barrier rotation control device linked with the barrier 18.
The active warming device comprises a workbench 27 arranged at the top of the overflow dam section 5 of the cavity of the water collecting gallery, a power supply 28 embedded inside the workbench 27, an electric heating device 29 arranged at the top of the workbench and a heat exchange pipeline 30 connected with the water collecting gallery and the electric heating device 29, wherein the power supply 28 is composed of a power supply grid, a solar power generation plate 31 arranged outside the water collecting gallery and a hydraulic generator 32 arranged on a longitudinal slope 2 at the bottom of the water collecting gallery are cooperatively powered, the electric heating device 29 is an electric heating wire, the airflow of the heat exchange pipeline 30 passes through the electric heating device 29, a fan 33 is further arranged in the heat exchange pipeline 30, two ports of the heat exchange pipeline 30 are communicated with the inner cavity of the water collecting gallery, an air inlet 34 of the heat exchange pipeline is flush with the lower surface of the cover plate, and an air outlet 35 of the heat exchange pipeline 30 extends into the inner cavity of the water collecting gallery. The active heating device mainly converts clean energy into heat energy to heat the interior of the water collecting gallery, so that water in the water collecting gallery is prevented from freezing in an extremely cold environment.
The barrier rotation control device comprises a rotating shaft 21 arranged at two ends of the barrier 18, a driven gear 22 arranged at one end of the rotating shaft 21, a rack 23 meshed with the driven gear 22, a track 24 used for limiting the motion track of the rack 23, a driving gear 25 used for driving the rack 23 to move, and a driving motor 26 connected with the driving gear 25 in a shaft mode, wherein the driving motor 26 is electrically connected with a power supply 28. The barrier rotation control device can control the barrier 18 to rotate, so that the barrier is rotated to 18 vertical directions when the temperature is high and the illumination is strong in the daytime, namely, a skylight is arranged at the top of the water collecting gallery, and the illumination can be irradiated into the water collecting gallery through the gaps of the barriers 18 to radiate heat inside the water collecting gallery; on the contrary, when the temperature is lower at night and no light is emitted, the barriers 18 are rotated to the horizontal direction, the edges of the adjacent barriers 18 are connected in pairs, and the skylight at the top of the water collecting gallery is sealed, so that the water collecting gallery forms a sealed space, and cold air is prevented from entering the inside of the water collecting gallery.
Referring to fig. 10, a light reflection device is arranged on the retaining wall 7, the light reflection device includes a support frame 36, an angle adjuster 37 arranged on the support frame 36, and a reflective mirror 38 fixed on the angle adjuster 37, the angle adjuster 37 includes 3 electric push rods arranged on the support frame 36, and two ends of the electric push rods are respectively connected with the back surfaces of the support frame 36 and the reflective mirror 38 in a ball joint manner. The orientation and the inclination angle of the reflector 38 are changed by telescopically changing the length of the electric push rod, so that more light is reflected to the area where the barrier 18 is located, and the barrier 18 is prevented from being frozen.
When the water collecting and seepage device is used specifically, the bottom lattice barrier and the upstream water collecting and seepage pipe are adopted to comprehensively take water, and the solid overflow dam section 4, the bottom lattice barrier water taking dam section 6 and the water collecting gallery cavity overflow dam section 5 are sequentially arranged from the right bank to the left bank from the aspects of topographic geology, water taking port arrangement, hydraulic conditions, engineering quantity, construction flow guide, construction conditions, running conditions and the like, the upper stream is provided with a seepage prevention cover, and the lower stream is provided with a protection flat.
According to the flow, the width of the corridor and the silt starting flow speed, the water depth, the head loss and the elevation of each point at the bottom of each segment can be obtained. And connecting the elevations of all the points to obtain the longitudinal slope 2 at the bottom of the water collecting gallery. The slope of the beginning end of the common water collecting gallery is steeper, and the end of the common water collecting gallery is gradually reduced to form an arc-shaped longitudinal slope. For the convenience of construction, can simplify the pitch arc into the broken line longitudinal gradient to the conduit 10 direction, be directed water to grit chamber 12 by conduit 10 (grit chamber 12 is intake pond effect concurrently), establish sluice valve well 15 in the front of grit chamber 12, establish manual ball valve or hydraulic remote control ball cock in the well, be used for controlling inflow, fine particle such as grit is automatic discharges grit chamber 12 through the bottom spiral sand discharge pipe 16 of grit chamber 12, overflow pipe 17 is established to grit chamber 12 above the design water level, spiral sand discharge pipe 16 is the emptying action concurrently, spiral sand discharge pipe 16 communicates with blow-down pipe 13, preliminary filterable water is carried to the water purification plant by raceway 14, each pipe export all establishes sluice valve well 15, control outflow is so that operation and maintenance.
In summer, when the water level is high, river water can overflow from the dam crest, and part or all of the water flows into the water collecting gallery through the gaps of the barriers 18 and then flows into the water conduit 10 from one end of the gallery. The bed ballast in the river, except the sand and stone and other fine particles enter the water collecting gallery along with the water flow, the rest of the gravel and the pebbles are flushed to the downstream along with the water flow from the top of the barrier 18 or the top of the weir. In order to prevent the grids 18 of the bottom grid water taking dam section from being frozen and incapable of taking water in winter, part of overflow dam sections are designed into internal cavities to form a water collecting gallery and are communicated with the water collecting gallery of the bottom grid dam section, water collecting seepage pipes 11 are embedded in upstream water-facing surfaces of the bottom grid water taking dam section 6 and the water collecting gallery cavity overflow dam section 5, the water collecting seepage pipes 11 are arranged in a quincunx shape, the bottom elevation of the lowest layer of water collecting seepage pipe 11 is higher than the sediment accumulation elevation in the overhaul period, and the sediment accumulation is prevented from blocking the inlets of the water collecting seepage pipes; the height of the top of the highest layer of the water collecting seepage pipe 11 is lower than that of the ice cover layer so as to realize that the water collecting seepage pipe 11 takes water below the ice cover layer in winter, and the pipe diameter and the number of the water collecting seepage pipes 11 are determined by hydraulic calculation according to the inflow rate. The water in the water collecting gallery is led to a grit chamber 12 by a water conduit 10, a spiral sand discharging pipe 16 is arranged at the bottom of the grit chamber 12, fine particles such as sand and stone are automatically discharged out of the grit chamber 12 through the spiral sand discharging pipe 16, the spiral sand discharging pipe 16 has a emptying function, the spiral sand discharging pipe 16 is communicated with a vent pipe 13, a water inlet valve can be closed when the grit chamber needs to be overhauled, and the water in the grit chamber 12 is emptied for overhauling.
Claims (10)
1. The anti-freezing and anti-blocking water taking system for the sediment-laden river comprises an upstream anti-seepage paving area, a midstream water taking area and a downstream flat protecting area which are sequentially arranged along the water flow direction, wherein the midstream water taking area comprises a retaining wall, an entity overflow dam section, a water collecting gallery cavity overflow dam section and a bottom lattice barrier water taking dam section, and the bottom lattice barrier water taking dam section is arranged between the entity overflow dam section and the water collecting gallery cavity overflow dam section;
the cross-sectional profile of the part of the midstream water taking area, which is higher than the upstream anti-seepage paving area and the downstream apron area, is a right-angle trapezoidal structure with a narrow upper part and a wide lower part, the rectangular part of the right-angle trapezoidal structure sequentially comprises an upstream surface and an interlayer part along the water flow direction, and the triangular part is a revetment;
the intermediate layer portion of end check barrier water intaking dam section includes the cavity of barrier and barrier below, and barrier and cavity form end check barrier corridor of catchmenting, its characterized in that:
the interlayer part of the cavity overflow dam section of the water collection gallery comprises a cover plate and a cavity below the cover plate, and the cover plate and the cavity enclose to form the cavity overflow dam section water collection gallery; the bottom grid barrier water collecting gallery and the cavity overflow dam section water collecting gallery are communicated with each other to form a water collecting gallery, the bottom of the water collecting gallery is a longitudinal slope from high to low, and the lower end of the longitudinal slope at the bottom of the water collecting gallery is led into a water conduit which penetrates through the retaining wall;
the upstream surface of bottom grid barrier water intaking dam section and catchment corridor cavity overflow dam section buried catchment seepage pipe underground, lowest position catchment seepage pipe socle elevation is higher than maintenance phase silt siltation elevation, the catchment seepage pipe socle elevation of highest position is less than below the ice cap layer.
2. The anti-freeze anti-blocking water intake system for sediment-laden rivers according to claim 1, characterized in that: the structure of the solar water heater also comprises an anti-freezing system, wherein the anti-freezing system comprises an active heating device for carrying out radiation heating on the inner cavity of the water collecting gallery, a barrier rotation control device linked with the barrier and an illumination reflection device arranged on the retaining wall.
3. The anti-freezing and anti-blocking water intake system for sediment-laden rivers according to claim 2, characterized in that: the active heating device comprises a workbench arranged at the top of the midstream water taking area, a power supply embedded in the workbench, an electric heating device arranged at the top of the workbench and a heat exchange pipeline communicated with the water collecting gallery and the electric heating device; the power is by the power supply electric wire netting, set up at the outside solar panel of corridor that catchments and set up the hydrogenerator in coordination power supply on the corridor bottom longitudinal slope that catchments, and electric heater unit is the heating wire, and heat transfer pipeline's air current is heated up by electric heater unit, still sets up the fan in the heat transfer pipeline, and heat transfer pipeline's both ends mouth all is linked together with the inner chamber of corridor that catchments, and heat transfer pipeline's air inlet and apron lower surface parallel and level, heat transfer pipeline's gas vent extension enters the inner chamber of corridor that catchments.
4. The anti-freezing and anti-blocking water intake system for sediment-laden rivers according to claim 3, characterized in that: the barrier rotation control device comprises rotating shafts arranged at two ends of the barrier, driven gears arranged on the rotating shafts, racks meshed with the driven gears, tracks used for limiting movement tracks of the racks, driving gears used for driving the racks to move and driving motors connected with the driving gears in a shaft mode, wherein the driving motors are electrically connected with the power supply.
5. The anti-freezing and anti-blocking water intake system for sediment-laden rivers according to claim 2, characterized in that: the illumination reflection device comprises a support frame, an angle regulator and a reflector, wherein the angle regulator is arranged on the support frame, the reflector is fixed on the angle regulator, the angle regulator comprises 3 electric push rods arranged on the support frame, and two ends of each electric push rod are connected with the back surfaces of the support frame and the reflector respectively in a ball head hinged mode.
6. The anti-freeze anti-blocking water intake system for sediment-laden rivers according to claim 1, characterized in that: the water collecting seepage pipe is arranged in a quincunx shape, a flow velocity meter is arranged in the water collecting seepage pipe, a filter screen is arranged on one side of the upstream face of the water collecting gallery cavity overflow dam section and the bottom lattice barrier water taking dam section, the two sides of the filter screen are both connected with a crawler, and the crawler is driven by two groups of tensioning gears arranged on the upstream face of the water collecting gallery cavity overflow dam section and the bottom lattice barrier water taking dam section.
7. The anti-freezing and anti-blocking water intake system for sediment-laden rivers according to claim 6, characterized in that: the inner diameter of the outlet of the water collecting seepage pipe is 1.2-1.5 times of the inner diameter of the inlet of the pipe.
8. The anti-freeze anti-blocking water intake system for sediment-laden rivers according to claim 1, characterized in that: the shape of the barrier is a trapezoidal barrier, the width range of the barrier is 1.2-2.5cm, and the height of the barrier is 3-4 times of the width of the barrier; independently and optionally, the barrier gap of the barrier is 1-2 cm; independently optionally, the mounting position of the barrier is provided with an L-shaped groove.
9. The anti-freeze anti-blocking water intake system for sediment-laden rivers according to claim 1, characterized in that: the number of the retaining walls is 2, and the entity overflow dam section, the water collecting gallery cavity overflow dam section and the bottom lattice barrier water taking dam section are arranged among the 2 retaining walls; and sand gravel is backfilled on the outer side of the retaining wall.
10. The automatic sand discharging device arranged at the downstream of the anti-freezing and anti-blocking diversion hub of any one of claims 1 to 9 is characterized in that: the automatic sand discharge device comprises a grit chamber arranged at the tail end of a water conduit (the grit chamber is provided with two branch conduits which are respectively an emptying pipe and a water conduit), a spiral sand discharge pipe is obliquely arranged at the bottom of the grit chamber, the included angle between the spiral sand discharge pipe and the side edge of the grit chamber is 30-60 degrees, the cross section of the spiral sand discharge pipe is open, the front edge is low, the rear edge is high, the two edges are respectively flush with the bottom surface of the grit chamber and divide the grit chamber into two parts, an overflow pipe is arranged above the water level of the grit chamber, gate valve wells are arranged at the joints of the front part of the grit chamber, the grit chamber and the water conduit and the joints of the spiral sand discharge pipe and the emptying pipe, and manual ball valves or hydraulic remote control float valves are arranged in the gate valve wells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN202110241458.6A CN113006196B (en) | 2021-03-04 | 2021-03-04 | Small-flow double water taking system for stream ditch in alpine region |
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| CN113006196B (en) | 2021-09-14 |
| CN113914416B (en) | 2022-04-22 |
| CN113006196A (en) | 2021-06-22 |
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