CN108547263A - A kind of Water Curtain Cave formula ecoscape dam - Google Patents
A kind of Water Curtain Cave formula ecoscape dam Download PDFInfo
- Publication number
- CN108547263A CN108547263A CN201810658367.0A CN201810658367A CN108547263A CN 108547263 A CN108547263 A CN 108547263A CN 201810658367 A CN201810658367 A CN 201810658367A CN 108547263 A CN108547263 A CN 108547263A
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- Prior art keywords
- water curtain
- dam
- dam body
- terrace
- curtain cave
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Classifications
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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
- E02B7/02—Fixed barrages
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
The invention discloses a kind of Water Curtain Cave formula ecoscape dams, including key dam body（1）, the key dam body（1）By upstream upstream face（11）, top spillwag chute（12）With toe terrace（13）Composition, for the key dam body across being set on river, the top overflow extends to form drop platform for the downstream（2）, drop platform and the downstream side of key dam body form an arc cantilevered cornice structure（32）, the toe terrace is located at arc cantilevered cornice structure lower section, Water Curtain Cave gallery is arranged between the arc cantilevered cornice structure and toe terrace（3）, drop cascade is formed from the water under drop platform flow, and remarkable spit of fland step is laid in Water Curtain Cave gallery（31）, stilling pond is arranged in the downstream of the Water Curtain Cave gallery（4）.The advantages that Water Curtain Cave formula ecoscape dam has durability good, at low cost, safe and reliable to operation, and hydrophilic effect is good, and landscape ecological effects are strong.
Description
Technical field
The present invention relates to a kind of ecoscape dam more particularly to a kind of Water Curtain Cave formula ecoscape dams.
Background technology
In recent years, with beautiful rural construction, the proposition of Ecological waterscape theory, also with the continuous wound of hydraulic and hydroelectric engineering
New and development, grows rapidly also with social economy, and requirement of the people to water landscape, Ecology construction increasingly improves.For city
The weir built in city's river controlling projects proposes new demand in ecological, landscape, hydrophily etc..
The movable landscape dam built on city river has：Sluice, rubber dam, turnover panel wicket dam, steel dam valve and pneumatic brake etc., this
Or a little movable dams are of high cost or reliability, durability difference or aesthetics are bad；In addition, existing concrete or stone-laying
The landscape effect on the fixed ecoscape dam of body is bad.
In view of drawbacks described above, the weir of design is used under the premise of meeting flood control safety using function reducing concrete
Amount has carried out exploration and practice in terms of improving the ecological of weir, hydrophily, landscape to the optimization of ecoscape weir.
Invention content
The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, provide a kind of with durability
Good, at low cost, safe and reliable to operation, hydrophilic effect is good, the ecoscape dam of the strong Water Curtain Cave formula of landscape ecological effects.
In order to solve the above technical problems, above-mentioned purpose of the present invention is achieved through the following technical solutions：
A kind of Water Curtain Cave formula ecoscape dam, including key dam body, the key dam body by upstream upstream face, top spillwag chute and
Toe terrace forms, and for the key dam body across being set on river, the top overflow extends to form drop platform for the downstream,
The downstream side of drop platform and key dam body forms an arc cantilevered cornice structure, and it is outstanding that the toe terrace is located at the arc
Below arm-type cornice structure, Water Curtain Cave gallery is set between the arc cantilevered cornice structure and toe terrace, it is flat from drop
The water that platform flows down forms drop cascade, and remarkable spit of fland step is laid in Water Curtain Cave gallery, and the downstream setting of the Water Curtain Cave gallery disappears
Power pond.
Arc structure of the axis of dam of the key dam body in arch upstream, the upstream upstream face is perpendicular to horizontal plane, institute
The downstream dam facing for stating key dam body is in the arc form being upstream bent, and makes the cross section of key dam body in upstream inner concavity.
The landscape enrockment for imitating nature piling and layout of stones shape is set on the top spillwag chute of the key dam body, to form flow waterfall straggly
Cloth, increases the diversity of Water Curtain Cave water curtain, while can increase dam body dead weight and be conducive to the dam body stability against sliding.
The drop platform stretches out toe terrace, makes the drop incidence point of the drop cascade far from toe terrace, and just
Fall into stilling pond well.
The remarkable spit of fland step is slabstone modelled after an antique, and the both ends of the remarkable spit of fland step connect two sides footpound force traffic, and in cascade
Security guardrail is arranged in the downstream edge of hole gallery.
Large-scale embossment is carved on the upstream side dam body of the key dam body.
Terrace step is arranged in the downstream side on the toe terrace, and places of cultural interest stone and water plant are disposed on the step of terrace.
The stilling pond is by energy dissipating protection-apron, the baffle wall style for the downstream end for being set to energy dissipating protection-apron, key-wall and two sides side slope
Composition；The energy dissipating protection-apron is made of the plain concrete cushion layer of reinforced concrete cast-in-situ bottom plate and lower berth, and is arranged every 15m
One expansion joint uses rubber water-proof in expansion joint.
The upstream of the key dam body sets horn-like concrete guard wall, downstream setting shore protection barricade, and bank setting emptying
Culvert, the step for connecting Water Curtain Cave gallery, and railing is set in the face near water of concrete guard wall and step.
The drop platform is that the trip extension of key dam body top down is formed free overflow formula to fall bank, and it is incident to be conducive to drop
Point is conducive to the Against Sliding Stability of key dam body far from toe terrace.And the water that the arc cantilevered cornice structure is drop platform
Curtain hole gallery provides space；
Compared with the prior art, the advantages of the present invention are as follows：
The water balcony on Water Curtain Cave formula ecoscape dam of the present invention designs not instead of on dam surface, in dam main body
Portion increases the hydrophilic safety played with water, can be easy to fall down and have to avoid dam crest water balcony to slide into flow close to downstream side
The danger of stilling pond.
The Jiang Shibanting steps of crossing of Water Curtain Cave formula ecoscape dam design of the present invention are arranged in Water Curtain Cave gallery, walk in corridor
The in picturesque disorder drop water curtain in downstream can be watched in road, and can appreciate the waterpower beautiful scenery that drop falls into stilling pond, simultaneously because
The Greening Design for having the places of cultural interest stone placement and water plant on large-scale embossment and spit of fland step downstream side step on the inside of gallery, carries significantly
Beautiful enjoyment of the walking in Water Curtain Cave gallery is risen, the hydrophilic experience of solid with water is increased.
Water Curtain Cave formula ecoscape dam of the present invention has durability good, and at low cost, safe and reliable to operation, hydrophilic effect is good,
The ecoscape dam of the strong Water Curtain Cave formula of landscape ecological effects.
Description of the drawings
Fig. 1 is a kind of Water Curtain Cave formula ecoscape dam body axonometric drawing provided by the present invention.
Label declaration：1, key dam body；11, upstream upstream face；12, top spillwag chute；13, toe terrace；2, drop platform；
3, Water Curtain Cave gallery；31, remarkable spit of fland step；32, arc cantilevered cornice structure；33, terrace step；34, security guardrail；4, disappear power
Pond；41, stilling pond protection-apron；42, baffle wall style；43, key-wall；44, side slope；45 reinforced concrete cast-in-situ bottom plates；46 plain concrete pads
Layer；47 expansion joints；5, auxiliary equipment；51, concrete guard wall；52, railing；53, step；54, emptying tunnel.
Specific implementation mode
The present invention is described in further detail with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of one embodiment of Water Curtain Cave formula ecoscape dam of the present invention include key dam body 1, drop platform 2,
Water Curtain Cave gallery 3 and stilling pond 4 and auxiliary equipment 5 form.
In the present embodiment, the axis of dam of key dam body 1 is in the arc structure encircleed upstream, and upstream upstream face 11 is perpendicular to level
Face, downstream dam facing are in the arc form that is upstream bent, the cross section of key dam body 1 in "【" shape, i.e., it is whole in upstream inner concavity
Body is built up by armored concrete, and key dam body 1 crosses river for raising of water level, carries out river water storage, forms landscape lake, especially
The ecological water quantity in dry season river is ensured.
In the present embodiment, the landscape enrockment of imitative nature piling and layout of stones shape is set on the top spillwag chute 12 of key dam body 1, it is straggly to be formed
Flow waterfall, increase Water Curtain Cave water curtain diversity, while can increase dam body dead weight be conducive to the dam body stability against sliding.
In the present embodiment, river water is by top spillwag chute 12, then downstream extends through key dam body dam crest and form drop and put down
Platform 2, the bottom setting toe terrace 13 of drop platform 2, and the platform 2 that drops stretches out toe terrace 13, the downstream on toe terrace 13
Stilling pond 4 is arranged in side.Drop platform 2 sluiced by free overflow formula, dam body downstream side formed drop water curtain, fall into
Stilling pond 4.Be conducive to drop incidence point far from toe terrace 13 using the drop drop of platform 2, the antiskid for being conducive to key dam body 1 is steady
It is fixed.And one arc cantilevered cornice structure 32 of downstream side formation of drop platform 2 and key dam body 1, under the platform 2 that drops
Face setting Water Curtain Cave gallery 3 provides space.
In the present embodiment, Water Curtain Cave gallery 3 by below drop platform 2 arc cantilevered cornice structure 32 and toe terrace
13 and the drop cascade composition that is flowed down from drop platform 2, and antique stone plate remarkable spit of fland step 31, mistake are laid in Water Curtain Cave gallery 3
The both ends connection two sides footpound force traffic of people spit of fland step 31 has both hydrophile function, and in the upstream side dam body arc of Water Curtain Cave gallery 3
Large-scale embossment is carved on cantilevered cornice structure 32, increases the function of the publicity such as aqueous culture.The downstream side of Water Curtain Cave gallery 3 is arranged
Security guardrail 34, to protect pedestrains safety.Pacify simultaneously in 33 enterprising pedestrian's text Landscape stone of terrace step in 3 downstream of Water Curtain Cave gallery
The Greening Design with water plant is set, and places of cultural interest stone is laid in the close downstream side of terrace step 33, to falling in stilling pond 4
Water reflux energy dissipating promotes pedestrian's walking in Water Curtain Cave gallery 3 to protect the water plant on terrace step 33 close to upstream side
Beautiful impression increases the hydrophilic experience of solid of pedestrian and water, allows the pedestrian walked in Water Curtain Cave gallery 3 that can experience Wu Chengen
The artistic conception of " flowers and fruits mountain Promised Land, Water Curtain Cave cave heaven " in the works.
In the present embodiment, stilling pond 4 is close to the downstream of spit of fland step Water Curtain Cave gallery 3, by energy dissipating protection-apron 41, energy dissipating protection-apron 41
The baffle wall style 42 of downstream end is formed with key-wall 43 and two sides side slope 44；And energy dissipating protection-apron 41 is using reinforced concrete cast-in-situ bottom
Plate 45, to prevent temperature stress in casting process from protection-apron being caused to deform, sole plate sets 10cm thickness plain concrete cushion layer 46.And
Expansion joint 47 is set every 15m one, and rubber water-proof is used in expansion joint 47.
In the present embodiment, auxiliary equipment 5 includes mainly：Upstream sets horn-like concrete guard wall 51, downstream sets shore protection gear
Wall, emptying culvert 54 and opening and closing device, the step 53 and concrete guard wall 51 of connection Water Curtain Cave gallery and facing for step 53
The railing 52 etc. of water surface setting；
The Practical Project of the present embodiment construction is located on the rivers Jishou City Wan Xi, the Water Curtain Cave formula ecoscape of the present embodiment
Dam Structure Calculation and erosion control calculating process are as follows：
One, embodiment Water Curtain Cave formula ecoscape dam Structure Calculation
1) operating mode and Load Combination are calculated
Project Areas earthquake motion peak acceleration ＜ 0.05g, Ground motion response spectrum signature period are that 0.35s (is equivalent to earthquake base
VI degree of this earthquake intensity ＜), it can be without providing fortification against earthquakes.Load Combination is shown in Table 1
1 landscape dam stable stress of table calculates operating mode and Load Combination
2) computational methods
Key dam body is located on batholith, reference《Concrete gravity dam design specification》(SL 319-2005) carries out the dam foundation
Against Sliding Stability and Stress calculation, calculation formula are as follows.
Shear Strength calculation formula：
In formula:K` --- the stability against sliding safety coefficient calculated by Shear Strength；
The Shear friction coefficient of f` --- dam concrete and dam foundation contact surface, takes 0.65；
The Shear cohesiveness of c` --- dam concrete and dam foundation contact surface, KPa；
A --- dam foundation base surface sectional area (similarly hereinafter), m2；
∑ W --- whole load on dam body (including uplift pressure, similarly hereinafter) is acted on to the normal direction score value of sliding surface, kN；
∑ P --- act on tangential score value of the dam body upper load to slip plane, kN.
The calculation formula of shearing strength：
In formula:K --- press the stability against sliding safety coefficient of shear Strength Calculation；
The shearing resistance friction coefficient of f --- dam concrete and dam foundation contact surface.
The vertical direct stress in dam foundation face:
In formula:
σOn y、σUnder y- dam foundation face upstream and downstream edge-perpendicular direct stress (kPa)；
∑ M --- act on calculate monolith on whole load in the torque summation of dam foundation face cross-section centroid axis, kN.m；
J --- the dam foundation face sectional area of monolith is calculated to the moment of inertia of dam foundation face centre of form axis, m2；
X --- dam foundation face upstream and downstream edge to the distance of centre of form axis, m.
3) result of calculation
The dam foundation face stable stress calculating achievement on Water Curtain Cave formula ecoscape dam is shown in Table 2.
2 dam dam foundation face stable stress calculating achievement table of table
According to《Concrete gravity dam design specification》SL319-2005 provides that dam foundation face factor against sliding K` values are answered
It is provided less than table 3 and table 4.
3 dam foundation face factor against sliding K` of table
Dam foundation face factor against sliding K values should be less than following table regulation.
4 dam foundation face factor against sliding K of table
According to《Hydraulic structure earthquake resistant design code》Regulation may occur in which that the drawing no more than 0.1MPa is answered in dam body downstream face
Power.From result of calculation it is found that landscape dam stability of dam foundation and antidumping meet code requirement.It is surveyed according to the geology at the dam body
It is 1.6MPa to examine dam foundation permitted bearing capacity [R], and dam foundation face stress is met the requirements.
Two, embodiment Water Curtain Cave formula ecoscape dam erosion control calculates
(1) flow is parallel to washing away and being calculated as follows for bank slope generation：
In formula：hB--- local scouring depth (m)；
hP--- the depth of water (m) for washing away place is replaced with Approximate Design water level depth capacity；
Vcp--- mean flow rate (m/s)；
VPermit--- allow non-scouring velocity (m/s) on riverbed face, V is determined by geological conditionsPermit=1.05；
N --- it is related with the shape of protection bank slope in the plane, generally take n=1/4；
Result of calculation hB=6.91m.
It is computed, bank slope shore protection barricade spats is in the following ultra-deep t=0.15m of erosion line.
(2) washing away for flow oblique impact protection bank slope production is calculated as follows：
In formula：Δhp--- the local degradation degree (m) counted from river bed；
α --- flow direction and the bank slope angle of cut, α=10 °；
M --- shore protection upstream batter slope coefficient；
D --- soil calculates grain size at slope foot, takes d=3cm；
Vj--- when flow deflection, flow local scour flow velocity,
Q1--- pass through the design discharge of river shoal part；
B1--- river shoal width, from riverbed edge to slope foot distance；B1=60.2m
H1--- the river shoal depth of water；Take H1=6.76m
β --- flow rate of water flow distributes nonuniformity coefficient, related with α, is checked in by tabling look-up.
By the scour depth Δ hp=0.55m for calculating longitudinal dike.
The left and right banks barricade on embodiment Water Curtain Cave formula ecoscape dam gos deep into bank slope and is more than 1.5m close to bank slope, left
Right bank barricade cope level is above design flood level, and basis is located at bedrock surface, and substrate elevation 197.50m can avoid flow
To dam abutment and foundation scouring.
Above-mentioned specific implementation mode is used for illustrating the present invention, is merely a preferred embodiment of the present invention, rather than to this
Invention is limited, and in the protection domain of spirit and claims of the present invention, to any modification of the invention made, is equal
Replace, improve etc., both fall within protection scope of the present invention.
Claims (9)
1. a kind of Water Curtain Cave formula ecoscape dam, including key dam body（1）, which is characterized in that the key dam body（1）It is met water by upstream
Face（11）, top spillwag chute（12）With toe terrace（13）Composition, the key dam body across being set on river, overflow by the top
Stream interface downstream extends to form drop platform（2）, downstream side one arc cantilevered of formation of drop platform and key dam body cornices
Structure（32）, the toe terrace is located at below the arc cantilevered cornice structure, the arc cantilevered cornice structure with
Water Curtain Cave gallery is set between toe terrace（3）, drop cascade, and Water Curtain Cave gallery middle berth are formed from the water under drop platform flow
If remarkable spit of fland step（31）, stilling pond is arranged in the downstream of the Water Curtain Cave gallery（4）.
2. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：The axis of dam of the key dam body
In the arc structure of arch upstream, the upstream upstream face is perpendicular to horizontal plane, and the downstream dam facing of the key dam body is in upstream
The arc form of bending makes the cross section of key dam body in upstream inner concavity.
3. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：It overflows at the top of the key dam body
The landscape enrockment for imitating nature piling and layout of stones shape is set on stream interface, to form flow waterfall straggly.
4. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：The drop platform stretches out dam
Toe terrace makes the drop incidence point of the drop cascade far from toe terrace, and fairly falls in stilling pond.
5. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：The remarkable spit of fland step is modelled after an antique
Slabstone, and the both ends of the remarkable spit of fland step connect two sides footpound force traffic, and safety guard is set in the downstream edge of Water Curtain Cave gallery
Bar（34）.
6. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：The upstream side of the key dam body
Large-scale embossment is carved on dam body.
7. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：The downstream on the toe terrace
Terrace step is arranged in side（33）, placement places of cultural interest stone and water plant on the step of terrace.
8. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：The stilling pond is protected by energy dissipating
It is smooth（41）, be set to energy dissipating protection-apron downstream end baffle wall style（42）, key-wall（43）And two sides side slope（44）Composition；It is described to disappear
Energy protection-apron is by reinforced concrete cast-in-situ bottom plate（45）With the plain concrete cushion layer in lower berth（46）Composition, and it is arranged one every 15m
Expansion joint（47）, rubber water-proof is used in expansion joint.
9. a kind of Water Curtain Cave formula ecoscape dam according to claim 1, it is characterised in that：The upstream of the key dam body is set
Horn-like concrete guard wall（51）, downstream be arranged shore protection barricade, and bank be arranged emptying culvert（54）, connection Water Curtain Cave gallery
Step（53）, and railing is set in the face near water of concrete guard wall and step（52）.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810658367.0A CN108547263A (en) | 2018-06-25 | 2018-06-25 | A kind of Water Curtain Cave formula ecoscape dam |
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| CN201810658367.0A CN108547263A (en) | 2018-06-25 | 2018-06-25 | A kind of Water Curtain Cave formula ecoscape dam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258460A (en) * | 2019-05-09 | 2019-09-20 | 深圳春沐源控股有限公司 | Weir body structure |
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| CN110258460A (en) * | 2019-05-09 | 2019-09-20 | 深圳春沐源控股有限公司 | Weir body structure |
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