CN103243692A - Construction arrangement method combining flow guidance and flood discharge - Google Patents

Construction arrangement method combining flow guidance and flood discharge Download PDF

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Publication number
CN103243692A
CN103243692A CN2013101815715A CN201310181571A CN103243692A CN 103243692 A CN103243692 A CN 103243692A CN 2013101815715 A CN2013101815715 A CN 2013101815715A CN 201310181571 A CN201310181571 A CN 201310181571A CN 103243692 A CN103243692 A CN 103243692A
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China
Prior art keywords
water inlet
dam
enabling
hole
flood
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CN2013101815715A
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CN103243692B (en
Inventor
王惠芹
侯红雨
付健
王美斋
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Yellow River Engineering Consulting Co Ltd
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Yellow River Engineering Consulting Co Ltd
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Priority to CN201310181571.5A priority Critical patent/CN103243692B/en
Publication of CN103243692A publication Critical patent/CN103243692A/en
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Publication of CN103243692B publication Critical patent/CN103243692B/en
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Abstract

The invention discloses a construction arrangement method combining flow guidance and flood discharge. The construction arrangement method comprises a first step of building an auxiliary dam at the position of an upper reservoir tail gully, enabling the auxiliary dam to be in smooth connection with a reservoir basin bank slope, and enabling dam crest elevation to be consistent with a main dam and a reservoir surrounding road; a second step of building a draining hole which simultaneously serves as a flow guiding hole for a construction period and a flood discharge hole for an upper reservoir operating period; enabling the draining hole to be of a city gate opening type, adopting an open channel uniform flow formula to calculate flow discharging capability of the hole, and determining section dimensions of the hole according to flood peak discharge of a design standard in the gully; a third step of enabling a water inlet of the draining hole to be of a side channel type water inlet structure and be arranged on the upstream side of the auxiliary dam, enabling the side channel type water inlet to be towards the direction of the gully, enabling the width and the height of the side channel type water inlet to coordinate with the maximum flood discharge capability of the draining hole, and fully utilizing the bottom width of the gully; and a fourth step of enabling a weir crest of an overflow weir of the side channel type water inlet to be 3-5m higher than the natural terrain of the bottom of the gully, and enabling the overflow weir to simultaneously serve as a fragment blocking dam. The construction arrangement method has the advantage that the draining hole simultaneously serves as the flow guiding hole for the construction period and the flood discharge hole for the upper reservoir operating period and engineering investment is reduced.

Description

The Construction Arrangement method that water conservancy diversion combines with flood discharge
Technical field
The present invention relates to pumped storage upper storage reservoir construction diversion temporary building and the Construction Arrangement that the permanent flood releasing structure of engineering combines, especially relate to the Construction Arrangement method that water conservancy diversion combines with flood discharge.
Background technology
Pumped storage power plant is that the electric energy when utilizing the electric load low ebb draws water to upper storage reservoir, discharges water in the electric load peak period to the power station of lower storage reservoir generating again.Generally formed by upper storage reservoir, diversion and power system and lower storage reservoir, in pure pumped storage power plant, keep one substantially quantitatively as the water body of energy carrier, in one-period, between upper and lower reservoir, back and forth utilize.Upper storage reservoir can take full advantage of and build engineering, also can be newly-built according to the topographic and geologic condition in power station, and newly-built upper storage reservoir is often selected positions such as suitable natural bealock, coombe, and the form of taking to excavate is obtained enough storage capacity.For the coombe that a small amount of natural runoff is arranged, its storehouse basin design needs to consider the water conservancy diversion form of construction period coombe flood and the flood discharge problem of runtime coombe flood.
Summary of the invention
The object of the invention is the Construction Arrangement method that provides a kind of water conservancy diversion to combine with flood discharge to reach the water conservancy diversion problem that both solves construction period storehouse basin, reduces the construction period flood to the interference of storehouse basin excavation, solves the drainage of flood in the runtime coombe again, reduces construction investment.
For achieving the above object, the present invention takes following technical proposals:
The Construction Arrangement method that water conservancy diversion of the present invention combines with flood discharge, carry out according to following step:
The first step, build auxiliary dam in tail slide ditch position, upper storage reservoir storehouse, described auxiliary dam and storehouse smooth-going connection of basin bank slope; Auxiliary dam is at the double upstream cofferdam of doing of construction period, and crest elevation is consistent with key dam and ring storehouse highway, and its width satisfies the traffic requirement;
Second goes on foot, builds drainage tunnel, double Diversion Tunnel and the flood discharging tunnel of upper storage reservoir runtime of doing the construction period; Described drainage tunnel adopts the gateway opening type, and the barrel discharge capacity adopts the open channel uniform flow formula to calculate, and determines its cross dimensions according to the peak flood flow of design standard flood in the coombe;
The 3rd step, described drainage tunnel water inlet adopt side channel formula water inlet structure, are arranged on the auxiliary dam upstream side, and described side channel formula water inlet is offered towards the coombe direction; The width of side channel formula water inlet, height are coordinated mutually with the maximum discharge capacity of described drainage tunnel, and are taken full advantage of the bottom of trench width of coombe;
The 4th step, described side channel formula water inlet overflow weir weir crest exceed the bottom of trench natural terrain 3-5 rice of coombe, the double retaining quarrel dam of doing.
Advantage of the present invention mainly is presented as:
1, double Diversion Tunnel and the flood discharging tunnel of upper storage reservoir runtime of doing the construction period of drainage tunnel reduces construction investment;
2, utilize the diversion function of drainage tunnel with the flood carrying-off of coombe, reduce the construction period flood to the interference of storehouse basin construction;
3, side channel formula water inlet structure is adopted in the drainage tunnel import, has increased the discharge capacity of import, has guaranteed that drainage tunnel is in the free flow state always, has cancelled the gate control of importing and exporting simultaneously, simplifies the management of runtime;
4, side channel formula water inlet overflow weir weir crest is higher than coombe bottom of trench natural terrain 3-5 rice, plays the effect of blocking the quarrel dam, and the Rolling Stone of having avoided coombe to fall enters drainage tunnel, has reduced wearing and tearing, destruction to the drainage tunnel liner structure;
5, build auxiliary dam in tail slide ditch position, upper storage reservoir storehouse, auxiliary dam is connected with the two sides bank slope is smooth-going, makes storehouse basin shape more perfect.
Description of drawings
Fig. 1 is the layout schematic diagram of upper storage reservoir of the present invention.
Fig. 2 is the layout schematic diagram of side channel formula water inlet of the present invention.
Fig. 3 is that the A-A of Fig. 2 is to sectional drawing.
The specific embodiment
As shown in Figure 1, 2, 3, the Construction Arrangement method that water conservancy diversion of the present invention combines with flood discharge, carry out according to following step:
The first step, build auxiliary dam 3, described auxiliary dam 3 and smooth-going connection of storehouse basin 4 bank slopes in tail slide ditch 2 positions, upper storage reservoir 1 storehouse; Auxiliary dam 3 is at the double upstream cofferdam of doing of construction period, and crest elevation is consistent with key dam 5 and ring storehouse highway 6, and its width satisfies the traffic requirement;
Second goes on foot, builds drainage tunnel 7, double Diversion Tunnel and the flood discharging tunnel of 1 runtime of upper storage reservoir of doing the construction period; Described drainage tunnel 7 adopts the gateway opening type, and the barrel discharge capacity adopts the open channel uniform flow formula to calculate, and determines its cross dimensions according to the peak flood flow of design standard flood in the coombe 2;
The 3rd step, drainage tunnel 7 water inlets adopt side channel formula water inlet 8 structures, are arranged on auxiliary dam 3 upstream sides, and described side channel formula water inlet 8 is offered towards coombe 2 directions, increase the discharge capacity of drainage tunnel 7 imports by side channel formula water inlet 8; The width of side channel formula water inlet 8, height are coordinated mutually with the maximum discharge capacity of drainage tunnel 7 and the bottom of trench width of coombe 2.
Overflow weir 9 weir crests of the 4th step, described side channel formula water inlet 8 exceed the bottom of trench natural terrain 3-5m of coombe 2, the double retaining quarrel dam of doing.

Claims (1)

1. Construction Arrangement method that water conservancy diversion combines with flood discharge is characterized in that: carry out according to following step:
The first step, build auxiliary dam (3) in upper storage reservoir (1) storehouse tail slide ditch (2) position, described auxiliary dam (3) and storehouse basin (4) the smooth-going connection of bank slope; Auxiliary dam (3) is at the double upstream cofferdam of doing of construction period, and crest elevation is consistent with key dam (5) and ring storehouse highway (6), and its width satisfies the traffic requirement;
Second goes on foot, builds drainage tunnel (7), double Diversion Tunnel and the flood discharging tunnel of upper storage reservoir (1) runtime of doing the construction period; Described drainage tunnel (7) adopts the gateway opening type, and the barrel discharge capacity adopts the open channel uniform flow formula to calculate, and determines its cross dimensions according to the peak flood flow of the interior design standard flood of coombe (2);
The 3rd step, described drainage tunnel (7) water inlet adopt side channel formula water inlet (8) structure, are arranged on auxiliary dam (3) upstream side, and described side channel formula water inlet (8) is offered towards coombe (2) direction; The width of side channel formula water inlet (8), height are coordinated mutually with the maximum discharge capacity of described drainage tunnel (7), and are taken full advantage of the bottom of trench width of coombe (2);
The 4th step, described side channel formula water inlet overflow weir (9) weir crest exceed the bottom of trench natural terrain 3-5 rice of coombe (2), the double retaining quarrel dam of doing.
CN201310181571.5A 2013-05-16 2013-05-16 The Construction Arrangement method that water conservancy diversion combines with flood discharge Active CN103243692B (en)

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CN201310181571.5A CN103243692B (en) 2013-05-16 2013-05-16 The Construction Arrangement method that water conservancy diversion combines with flood discharge

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202730707U (en) * 2012-08-24 2013-02-13 李志� Initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system for flood drainage river channel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202730707U (en) * 2012-08-24 2013-02-13 李志� Initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system for flood drainage river channel

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
吴远亮等: "江坪河水电站坝区冲沟综合治理分析及对策", 《施工技术》 *
张志雁等: "某水电站导流兼泄洪洞水工模型试验", 《广西水利水电》 *
赵娜: "新疆白杨河水库导流兼泄洪洞水利学计算简介", 《科研设计》 *

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Address after: 450003 Jinshui Road 109, Zhengzhou City, Henan Province

Patentee after: Yellow River Survey Planning and Design Research Institute Co., Ltd.

Address before: 450003 Jinshui Road 109, Zhengzhou City, Henan Province

Patentee before: Yellow River Engineering Consulting Co., Ltd.