CN210002356U - high dam step-by-step water retaining and emptying system - Google Patents
high dam step-by-step water retaining and emptying system Download PDFInfo
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- CN210002356U CN210002356U CN201822155539.0U CN201822155539U CN210002356U CN 210002356 U CN210002356 U CN 210002356U CN 201822155539 U CN201822155539 U CN 201822155539U CN 210002356 U CN210002356 U CN 210002356U
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Abstract
The utility model discloses a high dam manger plate unloading system step by step, include the manger plate unit that the rivers flow direction arranged in proper order in along the tunnel, the unit of draining, the manger plate unit is arranged according to appropriate interval by n grades of manger plate floodgate device and is formed, the unit of draining includes accident gate device and the floodgate device of draining, manger plate unit n grades of manger plate floodgate device all include the inspection floodgate well and the work floodgate well of arranging side by side in the tunnel, the concora crush tube is arranged side by side in the floodgate well outside at different levels and respectively with all inspection floodgate wells, work floodgate well intercommunication, the concora crush tube is highly less than last floodgate inslot water level for tunnel bottom, adopt the technical scheme of the utility model, make the water level reduce step by step in the floodgate well to make the relative water pressure of every manger plate floodgate device keep stable, make the resultant force that floodgate bore in the maximum range that metal construction can bear, realized the ability of emptying to the arbitrary degree of depth, simultaneously, through setting up devices such as air supplement.
Description
Technical Field
The utility model particularly relates to a hydraulic and hydroelectric engineering technical field especially relates to kinds of high dams manger plate unloading system step by step.
Background
However, most 300m high dam projects can only be emptied to about 105m water depth through spillways, flood discharging holes and emptying holes at present, the residual water capacity is huge, the water pressure is very high, the deep emptying is difficult to realize due to the influence of material strength and metal structure manufacturing processes, and therefore, technologies adapting to the deep emptying are needed to meet the emptying operation requirements of the current high dam projects.
In order to meet the operation requirement of 300 m-grade high dam engineering, Chinese patent with publication number CN105220659B discloses kinds of water blocking and emptying systems for ultra-deep layers of a high dam warehouse and an operation method thereof, by arranging a multi-stage gate to share a total water head and filling water behind each stage gate to offset a water blocking water head, the water thrust borne by each stage gate is in a conventional design range, and the technical problem of the prior art of the metal structure is overcome, but the structure still has the following defects that a vent pipe is arranged outside a gate well, the construction difficulty is increased, a pressure equalizing pipe, an air supplementing pipe and a water filling pipe are arranged in a complex manner, and spare facilities are partially lacked, so that the system is likely to lose the flat pressure, each stage gate system shares the water head averagely, only parts of water dividing heads are shared by a first stage gate , and the number and the construction period of.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an kinds of high dam manger plate unloading system step by step.
The utility model discloses a realize through following technical scheme.
The utility model provides a kind of high dam manger plate unloading system step by step, including manger plate unit, the unit that drains, concora crush unit and tunnel, tunnel and water source intercommunication, along rivers direction within the tunnel, manger plate unit, the unit that drains arrange side by side according to suitable interval on the tunnel, the manger plate unit include along the n level manger plate floodgate device that rivers direction arranged side by side according to suitable interval within the tunnel, the unit that drains includes along rivers direction arranges side by side according to suitable interval within the tunnel accident floodgate device and evacuation gate device on the tunnel, wherein, the upper reaches tunnel that is located level gate device is 686 section A, is located the device of grade manger plate floodgate of the third level and 3527 level floodgate 365 device between, is for having the pressure section B, is located the last level accident gate device and the floodgate 466 device of the last 350 level floodgate device and is connected with the manger plate branch pipe 4624 and the corresponding pressure section C of the second branch pipe 4624 and the manger plate floodgate 4624 are connected in proper interval side by side and the maintenance floodgate 4624 and the maintenance floodgate 466 device are connected to be connected with the manger plate branch pipe of the maintenance well 4624 and the maintenance door in proper interval within the tunnel respectively.
Along the interior water flow direction of tunnel, from 2 nd level water retaining gate device to last 1 level water retaining gate device end, still be provided with overflow corridor A between arbitrary adjacent two-stage water retaining gate device, the end of overflow corridor A communicates with the service lock well, another end of overflow corridor A communicates with the working lock well.
Along the water flow direction in the tunnel, the height of the inlet of the overflow gallery A is gradually reduced and is matched with the height of the water level controlled by the front -level water retaining gate device.
The cross-sectional outer contour shape of the overflow gallery A is a city hole shape.
The working gate well of the last -level water retaining gate device is communicated with the pressing section C sequentially through an overflow gallery B, an overflow shaft A and a flat pressing shaft, the height of the overflow gallery B is matched with the height of the control water level of the last -level water retaining gate device, and the tail end of the flat pressing main pipe is communicated with the flat pressing shaft.
The joint of the overflow vertical shaft A and the flat pressing vertical shaft is also communicated with the non-pressure section through an overflow gallery C.
The cross-sectional outer contour shape of the overflow gallery B is a circle or a hole .
The evacuation gate device includes with the arc lock chamber of tunnel intercommunication is provided with corresponding arc floodgate within the arc lock chamber, and arc floodgate movably switches on or cuts the tunnel.
The number of the branch pipes communicated with the service lock wells is at least 2, and the number of the second branch pipes communicated with the service lock wells is at least 2.
Defining the pressure section A water head as H0The number of the water retaining gates is n, the diameter of the section of the pressure section B is D, the bearing water head of each stage of water retaining gate device is delta H, and when each stage of water retaining gate device is designed according to the equal water thrust principle, H is0Δ H, D satisfy the following relationship:
defining the pressure section A water head as H0The number of the water retaining gate devices is n, the diameter of the section of the pressing section B is D, and the bearing water head of each stage of water retaining gate device is HiWhere i is 1,2,3, …, n, when the water gate device is designed according to the principle of unequal water thrust, then H is0、HiD satisfies the following relational expression:
H0＝H1+H2+...Hn+D。
tunnel quantity is many to each tunnel arranges respectively in the elevation of difference, wherein, along rivers direction in the tunnel, all has arranged water retaining unit, the unit of draining side by side according to suitable interval on between every tunnel, water retaining unit includes along the n level water retaining gate device that rivers direction arranged side by side according to suitable interval in the tunnel, the unit of draining includes along rivers direction in the tunnel arrange side by side according to suitable interval in accident gate device and evacuation gate device above the tunnel, along the order of tunnel elevation from high to low, the quantity of the water retaining gate device that contains in the water retaining unit at all levels progressively increases gradually, defines tunnel quantity is k, on each tunnel it has pressure section A flood peak to be HjWherein j is 1,2, …, k, the cross-sectional diameter of the pressing section B is D, and HkD satisfies any of the following relationships:
Hj-Hj-1＝D。
the tunnel cross section is single city hole type shape.
The beneficial effects of the utility model reside in that, adopt the utility model discloses a technical scheme, to the high dam engineering more than 300m, be provided with the tunnel that the cross-section is city hole shape bottom the tunnel, through setting up multistage manger plate floodgate device, make the water pressure that comes from the tunnel upper reaches reduce water pressure step by step, and make every grade of manger plate floodgate device keep balanced to hydraulic reduction, thereby be favorable to reducing the stage number that sets up of manger plate floodgate 2 device in the whole emptying system, reduce the construction work volume, reduce the construction difficulty, save the construction cost, advance step ground, through setting up many balance pipes, make each manger plate floodgate device communicate each other, and set up a plurality of valves on the balance pipe and control, thereby make water pressure reduction in every grade of manger plate floodgate 464 device keep balanced as far as possible, and the switching of accessible valve is adjusted to the water pressure within every grade of manger plate floodgate device through setting up the safe intake pipe 685, good basis for emptying corridor is good, in addition, the maintenance water pressure condition can be favorable to the running water pressure of multistage manger plate floodgate 462 in the emptying 638652, the running water pressure maintenance of the corresponding manger plate floodgate device can be set up through the corresponding atmospheric pressure, the maintenance circumstances in the atmospheric pressure of the atmospheric pressure, the atmospheric pressure limit valve , the atmospheric pressure maintenance of the atmospheric pressure, the atmospheric pressure can be favorable to the atmospheric pressure maintenance system, the atmospheric.
Drawings
FIG. 1 is a schematic structural view of the venting system of the present invention;
figure 2 is a longitudinal cross-sectional view of the venting system of the present invention;
FIG. 3 is a schematic diagram of the mechanism of the pressure equalizing pipe of the venting system of the present invention;
FIG. 4 is a schematic view of the water head bearing capacity of each stage of sluice when the number of the water gate devices in the emptying system of the present invention is 1;
fig. 5 is a schematic view of the water head of each stage of gate device when the number of the water-blocking gate devices in the emptying system of the present invention is 2.
In the figure, the water retaining unit is 1, the water discharging unit is 2, the flatting unit is 3, the flatting unit is 4, the water retaining gate is arranged, the accident gate is 5, the emptying gate is 6, the working gate is 7, the service gate is 8, the overflow gallery A is 9, the tunnel is 10, the overflow gallery B is 11, the overflow shaft A is 12, the overflow gallery C is 13, the accident gate is 14, the arc gate chamber is 15, the flatting shaft is 16, the arc gate is 19, the flatting main pipe is 20, the branch pipe is 21, the second branch pipe is 22, the ball valve is 23, the piston valve is 24, the air supplementing pipe is 401, the working gate well is 402, the accident gate well is 501, the pressure section A is 1001, the pressure section B is 1002, the pressure section C is 1003, the pressure section C is 1004, and the non-pressure section.
Detailed Description
The technical solution of the present invention is further described in with reference to the drawings, but the claimed scope is not limited thereto.
The utility model discloses a kind of high dam is manger plate unloading system step by step, as shown in fig. 1, fig. 2, fig. 3 shows, including manger plate unit 1, water drainage unit 2, concora crush unit 3 and tunnel 10, tunnel 10 communicates with the water source, along the interior rivers direction of tunnel 10, water drainage unit 1, water drainage unit 2 is arranged side by side on tunnel 10 according to suitable interval, water drainage unit 1 includes along tunnel 10 with the interior rivers direction according to the n grade manger plate floodgate device 4 that suitable interval was arranged side by side, water drainage unit 2 includes along tunnel 10 with the interior rivers direction according to suitable interval side by side accident floodgate device 5 and evacuation gate device 6 on tunnel 10, wherein, the upstream tunnel 10 that is located 630 level manger plate gate device 4 is pressing section A1001 for pressing section, be located on level manger plate device 6866 and 359 level manger plate floodgate device 4 and the last manger plate floodgate 365 device is connected with the corresponding branch pipe 465 of pressing plug 465 and is located on the corresponding pressure sluice gate 465 section 401 and the corresponding to pressing section of tunnel 3, the second branch pipe 465 and pressing section 465, the corresponding to pressing section of pressing section 401, the corresponding to pressing gate 465, the corresponding pressing section of pressing section is located on the corresponding to pressing section of pressing gate 465 and pressing section of pressing gate 465, the corresponding to pressing section of pressing section 401, the corresponding to pressing section of pressing gate 463, the corresponding pressing section of pressing gate 465, the corresponding to pressing gate 465, the corresponding pressing section of pressing section, the pressing section of pressing section, the pressing section of pressing section 401, the pressing section of pressing gate 463, the pressing section of pressing section, the pressing section of pressing section.
Adopt the technical scheme of the utility model, to the high dam engineering more than 300m, be provided with the tunnel that the cross-section is city hole shape bottom the tunnel, through setting up multistage manger plate floodgate device, make the water pressure that comes from the tunnel upper reaches reduce water pressure step by step, and make every grade manger plate floodgate device keep balanced to hydraulic reduction, thereby be favorable to reducing the stage number that sets up of manger plate floodgate 2 device in the whole discharge system, reduce the construction work volume, reduce the construction degree of difficulty, save the construction cost, advance 6 step ground, through setting up many balance pipes, make each manger plate floodgate device communicate each other, and set up a plurality of valves on the balance pipe and control, thereby make in every grade manger plate floodgate device to hydraulic reduction effect keep balanced to the greatest extent, and accessible valve 's switching adjusts the water pressure within every grade manger plate floodgate device, establish good basis for emptying completely, furthermore, in addition, also guaranteed the maintenance water level balance of maintenance operation of multistage manger plate unit 638654 device, the corresponding manger plate floodgate can not set up as the maintenance water pressure in the maintenance water pressure condition of the corresponding limit valve 685, the corresponding use of the maintenance water pressure in the maintenance system, the corresponding limit pipe 632, the maintenance water pressure can be favorable to the emptying stage, the maintenance water pressure in the maintenance operation, 539 device, the maintenance water pressure maintenance operation of the corresponding use.
, along the tunnel 10, from the 2 nd stage water gate device 4 to the last 1 st stage water gate device, an overflow gallery A9 is arranged between any two adjacent stages of water gate devices 4, the end of the overflow gallery A9 is communicated with the service gate shaft 401, the other end of the overflow gallery A9 is communicated with the working gate shaft 402, along the tunnel 10, along the inner water flow direction, the inlet of the overflow gallery A9 is gradually reduced in height and matched with the water level controlled by the former stage water gate device 4, and the cross section outline shape of the overflow gallery A9 is a shape of a city hole.
In addition, the working gate shaft 402 of the last -level water gate device 4 is communicated with a pressing section C1003 through an overflow gallery B11, an overflow shaft A12 and a flat pressing shaft 16 in sequence, the height of the overflow gallery B11 is matched with the height of the water level controlled by the last -level water gate device 4, and the tail end of a flat pressing main pipe 19 is also communicated with the flat pressing shaft 16, the joint of the overflow shaft A12 and the flat pressing shaft 16 is also communicated with a non-pressing section 1004 through an overflow gallery C13, the cross section outline of the overflow gallery B11 is circular or is a city hole, and when the overflow gallery A, the overflow gallery B and the overflow gallery C are preferably arranged, the gradient is preferably 1-3%.
, the evacuation gate device 6 includes an arcuate chamber 15 in communication with the tunnel 10, the arcuate chamber 15 having a corresponding arcuate gate 18 disposed therein, the arcuate gate 18 being movable to open and close the tunnel 10.
, the number of branch pipes 20 communicated with service brake wells 401 is at least 2, the number of second branch pipes 21 communicated with working brake wells 402 is at least 2, and at least two ball valves 22 and piston valves 23 are respectively arranged on the branch pipes 20 or the second branch pipes 21.
, it is preferable that the tunnel 10 be a single cross-sectional shape of a city hole.
In addition, as shown in fig. 4 and 5, a pressure section a1001 with a water head H is defined0The number of the water retaining gate devices 4 is n, the diameter of the section of the pressing section B1002 is D, the bearing water head of each stage of water retaining gate device 4 is delta H, and when each stage of water retaining gate device 4 is designed according to the equal water thrust principle, H is0Δ H, D satisfy the following relationship:
defining pressure section A1001 water head as H0The number of the water retaining gate devices 4 is n, the diameter of the section of the pressing section B1002 is D, and the bearing water head of each stage of water retaining gate device 4 is HiWhere i is 1,2,3, …, n, when the water gate device 4 is designed according to the principle of unequal water thrust, then H is0、HiD satisfies the following relational expression:
H0＝H1+H2+…+Hn+D。
the number of the tunnels 10 is multiple, and each tunnel 10 is respectively arranged at different elevations, wherein along the direction of the water flow in the tunnels 10, the water retaining unit 1 and the water drainage unit 2 are arranged in parallel according to a proper distance on each tunnel 10, the water retaining unit 1 comprises n-level water retaining gate devices 4 arranged in parallel according to a proper distance along the direction of the water flow in the tunnels 10, the water drainage unit 2 comprises accident gate devices 5 and emptying gate devices 6 arranged in parallel according to a proper distance along the direction of the water flow in the tunnels 10, the sequence from high to low along the elevation of the tunnels 10,the number of the water retaining gate devices 4 included in each level of the water retaining unit 1 is gradually increased, the number of the tunnels 10 is defined as k, and the water head of the pressure section A1001 above each tunnel 10 is defined as HjWhere j is 1,2, …, k, the cross-sectional diameter of the pressed segment B1002 is D, then HkD satisfies any of the following relationships:
Hj-Hj-1＝D。
wherein Hj-Hj-1The maximum water retaining head of the arc gate is satisfied, and the water head difference generated by the tunnel bottom slope is consideredj-Hj-1The maximum water retaining head H of the flat plate operating gate j-Hj-1The whole emptying system is integrally controlled by an automatic control system issuing command to realize water storage, water discharge, maintenance and water retaining working conditions, the monitoring system of each stage of gate in the system monitors the system running condition and command execution condition in real time, and the opening and closing of each stage of gate in the system, the water supplementing and pressure equalizing system, the water discharging and pressure equalizing system and the vent pipe are used by matching with the automatic control system command to complete various operations.
, the high dam step-by-step water-retaining emptying system further comprises an air supply pipe 24, the air supply pipe 24 is arranged in the inspection gate well 401 of the last water-retaining gate device 4, the end of the air supply pipe 24 is higher than the upstream water level of the last -stage water-retaining gate device 4, and the other end of the air supply pipe 24 is communicated with the inspection gate well 401.
The technical scheme of the application is put into practical application by Guiyang survey design research institute Co., Ltd of the China electric construction group, is subsidized by Qian science and union support [2017]2865 of the science and technology project of the Guizhou province science and technology support plan and DJ-ZDXM-2017-05 of the China electric construction research project in the implementation, achieves the beneficial technical effects after the implementation, and has good social benefits.
Claims (10)
- The high dam step-by-step water retaining and emptying system is characterized by comprising a water retaining unit (1), a water discharging unit (2), a leveling unit (3) and a tunnel (10), wherein the tunnel (10) is communicated with a water source, the inner water flow direction along the tunnel (10) is realized, the water retaining unit (1) and the water discharging unit (2) are arranged in parallel on the tunnel (10) at proper intervals, the water retaining unit (1) comprises n-stage water retaining gate devices (4) which are arranged in parallel along the inner water flow direction of the tunnel (10) at proper intervals, the water discharging unit (2) comprises an accident gate 1 device (5) and an emptying gate device (6) which are arranged in parallel on the tunnel (10) at proper intervals along the inner water flow direction of the tunnel (10), the water retaining unit (10) comprises a pressure gate A (1001) section (10), the -level water retaining gate device (4) and a maintenance gate 355) device (464), the maintenance gate 464) is arranged on the tunnel (10), the upper portion of a working gate downcomer (355) and a maintenance gate 464), the maintenance gate 464) which is arranged between a pressure gate 465) and a working gate 350, the maintenance gate 501 and a working gate 350, the maintenance gate 501, the maintenance gate 464, the maintenance gate 501 is at least one of a working gate 501, the maintenance gate 501 and a working gate 464, the maintenance gate 501 is arranged on the working gate 501, the maintenance gate 501, the working gate 501, the maintenance gate 464, the maintenance gate 501 and the maintenance gate 501 are arranged on the maintenance gate 501, the working gate 501, the maintenance gate 5, the maintenance gate 464, the maintenance gate 501 and the maintenance gate 501, the maintenance gate 501 are arranged on the maintenance gate 501, the maintenance gate 501 and the maintenance gate 501.
- 2. The progressive high dam water-retaining emptying system according to claim 1, wherein an overflow gallery A (9) is further arranged between any two adjacent water-retaining gate devices (4) along the inner water flow direction of the tunnel (10) from the 2 nd water-retaining gate device (4) to the last 1 st water-retaining gate device, the end of the overflow gallery A (9) is communicated with the service gate shaft (401), and the end of the overflow gallery A (9) is communicated with the working gate shaft (402).
- 3. The kinds of high dam stage-by-stage water-retaining emptying system according to claim 2, wherein, along the direction of water flow inside the tunnel (10), the height of the inlet of the overflow corridor A (9) is gradually reduced and matched with the elevation of the water level controlled by the front stage water-retaining gate device (4).
- 4. The high dam stage-by-stage water-retaining emptying system according to claim 1, wherein the working gate shaft (402) of the last stage water-retaining gate device (4) is further communicated with the pressing section C (1003) through an overflow gallery B (11), an overflow shaft A (12) and a flat pressing shaft (16), the height of the overflow gallery B (11) is matched with the height of the control water level of the last stage water-retaining gate device (4), and the tail end of the flat pressing main pipe (19) is further communicated with the flat pressing shaft (16).
- 5. high dam progressive water-retaining emptying system according to claim 4, characterized in that the junction of the overflow shaft A (12) and the flat pressing shaft (16) is also communicated with the pressureless section (1004) through an overflow corridor C (13).
- 6. high dam progressive water-retaining emptying system according to claim 1, wherein the emptying gate device (6) comprises an arc-shaped gate chamber (15) communicated with the tunnel (10), a corresponding arc-shaped gate (18) is arranged inside the arc-shaped gate chamber (15), and the arc-shaped gate (18) can movably conduct or intercept the tunnel (10).
- 7. high dam progressive water-retaining emptying system according to claim 1, wherein the number of branch pipes (20) communicating with service gate shafts (401) is at least 2, and the number of second branch pipes (21) communicating with service gate shafts (402) is at least 2.
- 8. The progressive high dam water-retaining emptying system according to claim 1, wherein the head of the pressure section A (1001) is defined as H0The number of the water retaining gates is n, the emptying gate device (6) participates in final stage water head distribution, the diameter of the section of the pressure section B (1002) is D, the bearing water heads of the water retaining gate device (4) and the emptying gate device (6) at each stage are delta H, and when the water retaining gate device (4) and the emptying gate device (6) at each stage are designed according to the equal water thrust principle, H is the same as H0Δ H, D satisfy the following relationship:
- 9. the progressive high dam water-retaining emptying system according to claim 1, wherein the head of the pressure section A (1001) is defined as H0The number of the water retaining gate devices (4) is n, the diameter of the section of the pressing section B (1002) is D, and the bearing water head of each stage of water retaining gate device (4) is HiWherein i is 1,2,3, …, n, and the emptying brake device (6) bears the water head Hn+1When the water retaining gate device (4) and the emptying gate device (6) at each stage are designed according to the principle of unequal water thrust, H is0、HiD satisfies the following relational expression:H0＝H1+H2+...Hn+1+D。
- 10. the high dam step-by-step water-retaining emptying system according to claim 1, characterized in that the number of the tunnels (10) is multiple, and each tunnel (10) is arranged at different elevations, wherein along the inner water flow direction of the tunnels (10), the water-retaining units (1) and the water-discharging units (2) are arranged in parallel at proper intervals on each tunnel (10), and the water-retaining units (1) comprise n-stage water-retaining gates arranged in parallel at proper intervals along the inner water flow direction of the tunnels (10) device (4), the unit of draining (2) include along within tunnel (10) rivers direction arrange side by side according to suitable interval in accident floodgate device (5) and evacuation floodgate device (6) on tunnel (10), along tunnel (10) elevation is by the order of high to low, and the quantity of the water retaining floodgate device (4) that contain within each grade water retaining unit (1) progressively increases gradually step by step, defines tunnel (10) quantity is k, is on each tunnel (10) it is H to have a section A (1001) flood peak to be the flood peak of section A (1001)jWherein j is 1,2, …, k, the cross-section diameter of the pressing section B (1002) is D, and HkD satisfies any of the following relationships:
Hj-Hj-1＝D。
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| CN201822155539.0U CN210002356U (en) | 2018-12-21 | 2018-12-21 | high dam step-by-step water retaining and emptying system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667248A (en) * | 2018-12-21 | 2019-04-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of multistage water blocking blowdown system for high dam engineering |
| CN114541344A (en) * | 2022-04-02 | 2022-05-27 | 中国电建集团北京勘测设计研究院有限公司 | Drainage tunnel arrangement structure adopting overflow depressurization to reduce gate water retaining head |
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2018
- 2018-12-21 CN CN201822155539.0U patent/CN210002356U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667248A (en) * | 2018-12-21 | 2019-04-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of multistage water blocking blowdown system for high dam engineering |
| WO2020125600A1 (en) * | 2018-12-21 | 2020-06-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Multi-stage water retaining and emptying system for high dam engineering |
| CN114541344A (en) * | 2022-04-02 | 2022-05-27 | 中国电建集团北京勘测设计研究院有限公司 | Drainage tunnel arrangement structure adopting overflow depressurization to reduce gate water retaining head |
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