CN206279493U - A kind of compound ground sills for mountain stream curved road type Shoal Regulation - Google Patents
A kind of compound ground sills for mountain stream curved road type Shoal Regulation Download PDFInfo
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- CN206279493U CN206279493U CN201621377641.XU CN201621377641U CN206279493U CN 206279493 U CN206279493 U CN 206279493U CN 201621377641 U CN201621377641 U CN 201621377641U CN 206279493 U CN206279493 U CN 206279493U
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Abstract
The utility model discloses a kind of compound ground sills for mountain stream curved road type Shoal Regulation, the compound ground sills is arranged on original riverbed, arranged along river width, positioned at the upstream of concave bank side deep trouth, it is characterized in that, the dam crest plane of the compound ground sills is made up of the dam crest plane A and dam crest plane B using domatic connection, the dam crest plane A is near bend concave bank side, the dam crest plane B is at planning navigation channel, the elevation of the dam crest plane B subtracts channel maintenance depth of water H for section design water level Z, elevation of the elevation of the dam crest plane A higher than the dam crest plane B.The utility model enables bend-rushing current to alleviate by using the different two sections of dam crest planes of height, being adjusted to the distribution of engineering section cross-sectional flow, and the shallow area's dynamics of washing away in navigation channel is increased, so make bend section navigational capacity be improved significantly.Small with quantities and the utility model does not change river width, the construction time is to the navigation less feature of interference.
Description
Technical field
The utility model is related to a kind of ground sills structure, and in particular to a kind of answering for mountain stream curved road type Shoal Regulation
Formula ground sills.
Background technology
Economic development of the abundant water transport resource in Southwestern China area to innerland region has important facilitation.Southwestern water
Fortune flows anxious feature with slope suddenly based on mountain stream.Shi Liang, pool, convex nozzle are distributed with river course, local form is complicated,
The turbulent river crashes its way through, fluidised form disorderly, and anxious, dangerous shoal is simultaneously deposited, and the navigation to dealing ship causes puzzlement, may threat to life property when serious
Safety.The surge of freight volume in recent years and the development of larger-sized vessel, the navigation safety to mountainous waterway propose requirement higher.
Therefore it is necessary for mountain stream is anxious, shallow, dangerous shoal carries out waterway regulation.
Mountain stream beach is nearly numerous, and curved road type shoal therein is representative.Fig. 1 is referred to, positioned at the shallow of river crook
Beach 11 is subject to the collective effect of bend secondary flow and bend-rushing current 10：The pebble bed-load mud that underflow 12 in bend secondary flow comes upstream
Sand ribbon to convex bank, cause convex bank become silted up it is shallow hinder boat, refer to Fig. 2, concave bank side rushes the curved top in riverbank because of the top of surface current 13, and formation is strong to sweep
Curved water 10, along with excess extension, Shi Liang etc. of the distribution of bend two sides, the burbulent danger of current, descending fleet by this section easily collision or
Wind up and maritime accident occur.If want to avoid it is curved hit a submerged reef, ship need patch convex bank embrace moraine and under, if but embracing a moraine tension and having stranded again
Anxiety.Regulation to this curved road type shoal at present, the technological means of use is generally the shallow area 14 of dredging convex bank, and in concave bank bend
Curved top is disposed about groynes 15, and floor plan is shown in Fig. 3, and cross-sectional view is shown in Fig. 4.Groynes act as adjust flow direction, make
Top punching point is outer to be moved, and has both improved or eliminated the adverse effect of bend-rushing current, and the scouring intensity in the shallow area of convex bank can be increased again；The shallow area of convex bank
Dredging can adjust cross-sectional flow distribution, expand discharge area, while expanding the navigable waters of ship.Practical engineering experience table
Bright, groynes adds the regulation method of shallow area dredging to be effectively improved navigation condition, but its construction has the amount of dredging big, and the cycle is long, right
The larger shortcoming of navigation interference.
With further going deep into for research, the method that ground sills controls beach, such as Fig. 5 are proposed.The arrangement of existing ground sills 9 mainly rise with
Lower effect：The discharge area of deep well section is reduced first, and the current that original flows through deep well section are extruded to opposite bank shoal part,
Adjustment cross-sectional flow is distributed to alleviate or eliminate bend-rushing current；Secondly, the flow velocity increase of shoal part, washes away dynamics and accordingly improves,
Be conducive to maintaining channel stabilization, while the depth rise of ground sills upstream, flow velocity and ratio drop reduce, this section of ship's navigation bar can be improved
Part；Last underflow is intercepted by ground sills, is risen along ground sills upstream face and is switched to surface current, such as Fig. 6, can alleviate or eliminate backflow.
In this curved road type Shoal Regulation method, the structure type of ground sills is very crucial.
The content of the invention
The utility model provides a kind of for mountain stream curved road type to solve technical problem present in known technology
The compound ground sills of Shoal Regulation, the compound ground sills Structural Engineering amount is small, can alleviate or eliminate bend-rushing current, improves the stream of shoal part
Speed is conducive to ship navigation to wash away shallow area.
The utility model is adopted the technical scheme that to solve technical problem present in known technology：One kind Yushan Hill
The compound ground sills of area's momentum model type Shoal Regulation, the compound ground sills is arranged on original riverbed, is arranged along river width, positioned at recessed
The upstream of bank side deep trouth, the dam crest plane of the compound ground sills is by the dam crest plane A and dam crest plane B groups using domatic connection
Into near bend concave bank side, the dam crest plane B is at planning navigation channel the dam crest plane A, the height of the dam crest plane B
Journey subtracts the height of the elevation higher than the dam crest plane B of the channel maintenance depth of water H, the dam crest plane A for section design water level Z
Journey.
The compound ground sills is connected from dam crest to dam bottom by slope, and the upstream face gradient is 1:1.5, the back side gradient is 1:
2.0, the domatic gradient is 1:2.
Safeguard structure is equipped with the upstream face and the dam crest face.
The compound ground sills throws block stone structure using scattered.
The utility model has the advantages and positive effects that：
1. by changing river cross-section discharge area, concave bank effluent speed is reduced, can weakens or eliminate the unfavorable of bend-rushing current
Influence；2. increase convex bank flow velocity, improve shallow area and wash away dynamics；3. ground sills stops that part underflow is increased is converted into surface low, can subtract
The water that whirlpools of weak concave bank side；4. the dam crest plane of different elevations, it is ensured that fairway depth, is conducive to navigation safety；5. this practicality
Novel engineering amount is small, material-saving, short construction period, smaller to navigation interference.With existing curved road type Shoal Regulation technology phase
Than, the utility model do not change river width in advance under, adjusting section stream by way of concave bank deep trouth upstream arrangement ground sills
Speed distribution, small with quantities to realize control target, the construction time is short, to the navigation less feature of interference.
In sum, the utility model passes through using two sections of different dam crest planes of height, to engineering section cross-sectional flow
Distribution is adjusted, and bend-rushing current is alleviated, and the shallow area's dynamics of washing away in navigation channel is increased, and then makes bend section navigable flow bar
Part be improved significantly.Small with quantities and the utility model does not change river width, the construction time is smaller to navigation interference
The characteristics of.
Brief description of the drawings
Fig. 1 is curved road type shoal floor map；
Fig. 2 is the schematic cross-sectional view of Fig. 1；
Fig. 3 is curved road type shoal groynes regulation floor map；
Fig. 4 is the schematic cross-sectional view of Fig. 3；
Fig. 5 is curved road type shoal ground sills regulation floor map；
Fig. 6 is the vertical section schematic diagram of Fig. 5；
Fig. 7 is compound ground sills schematic cross-sectional view；
Fig. 8 is the top view of compound ground sills；
Fig. 9 is the front view of compound ground sills.
In figure：1st, original riverbed, 2, dam crest plane A, 3, domatic, 4, dam crest plane B, 5, upstream face, 6, back side, 7, recessed
Bank side deep trouth, 8, planning navigation channel, 9, ground sills, 10, bend-rushing current, 11, shoal, 12, underflow, 13, surface current, 14, the shallow area of dredging convex bank,
15th, groynes.
Specific embodiment
For the content of the invention of the present utility model, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate
Accompanying drawing describes in detail as follows：
Refer to Fig. 5~Fig. 9, a kind of compound ground sills for mountain stream curved road type Shoal Regulation, the position of setting with
The position of the setting of ground sills 9 is identical in existing remedial technology, is arranged on original riverbed 1, is arranged along river width, positioned at concave bank side depth
The upstream of groove 7, the dam crest plane of the compound ground sills is made up of the dam crest plane A2 and dam crest plane B4 using domatic 3 connections,
Near bend concave bank side, the dam crest plane B4 is at planning navigation channel 8 the dam crest plane A2, the height of the dam crest plane B4
Journey subtracts the height of the elevation higher than the dam crest plane B4 of the channel maintenance depth of water H, the dam crest plane A2 for section design water level Z
Journey.
In the present embodiment, the compound ground sills is connected from dam crest to dam bottom by slope, and the gradient of upstream face 5 is 1:1.5,
The gradient of back side 6 is 1:2.0, domatic 3 gradient is 1:2.Abrasion in view of pebble bed-load sediment transport to dam body is made
With being equipped with safeguard structure on the upstream face 5 and the dam crest face.The compound ground sills throws block stone structure using scattered,
Block stone particle diameter under flow action can be calculated as follows：
In formula：D-block stone etc. holds particle diameter (m)；VfMaximum surface velocity (m/s) at-building.
To ensure to dissipate the stabilization for throwing block stone, the selected block stone particle diameter of construction should be greater than the calculated value of above formula.
The construction of above-mentioned compound ground sills is needed according to design requirement, it is considered to the factor such as the depth of water, flow velocity, wave near dam position
The drift effect produced to block stone.Selection dry season construction time is preferred, and answers Simultaneous Monitoring dam position, dam crest high during layering pell mell construction ground sills
Journey and toe wash away situation, prevent displacement, superelevation and and channel scour.
The dam length of above-mentioned compound ground sills does preresearch estimates, dam facing according to area of passage under design discharge and cross-sectional flow distribution
Width can be chosen according to the flow velocity of residing section, usually 2~5m.Dam body should build embedding firm, do reason slope and dam facing is smooth.Dam body
Toe is according to bed surface fluctuating situation and its smoothly transition.Mountain stream channel scour amplitude of deformation is smaller, therefore ground sills is taken typically
Property river bottom protection measure.
Operation principle of the present utility model：
A it is Q that () assumes that flow is carried out constant in upstream, and deep trouth is disposed about ground sills will not cause water level substantially to be raised；
B () builds ground sills before, the area of passage of engineering section is S, and wherein section left bank shoal part area of passage is about 1/
3S；Right bank deep trouth section area of passage about 2/3S；
C () builds ground sills after, it is assumed that ground sills current obstruction area is about the half of shoal area of passage, i.e. 1/6S, engineering section mistake
Flow area is changed into 5/6S, and the wherein area of passage of left bank shoal part is still 1/3S；Because ground sills build deep trouth section, therefore right bank deep trouth in
Section area of passage is reduced to 1/2S；
D () builds ground sills after, the flow for being stopped loss by ground sills will be distributed to shoal part and deep well section, if according to excessively stream
Area distributions, the increased flow in shoal part is 1/6Q2/5, and flow velocity increases by 1/5 (Q/S), average with the section built before ground sills
Flow velocity Q/S is compared, and shoal section flow velocity amplification reaches 20%.
Although being described to preferred embodiment of the present utility model above in conjunction with accompanying drawing, the utility model is not
Above-mentioned specific embodiment is confined to, above-mentioned specific embodiment is only schematical, is not restricted, ability
The those of ordinary skill in domain is not departing from the utility model objective and claimed under enlightenment of the present utility model
In the case of scope, many forms can also be made, these are belonged within protection domain of the present utility model.
Claims (4)
1. a kind of compound ground sills for mountain stream curved road type Shoal Regulation, the compound ground sills is arranged on original riverbed,
Arranged along river width, positioned at the upstream of concave bank side deep trouth, it is characterised in that the dam crest plane of the compound ground sills is by using domatic company
Dam crest plane A and dam crest plane the B composition for connecing, the dam crest plane A are in rule near bend concave bank side, the dam crest plane B
Draw at navigation channel, the elevation of the dam crest plane B subtracts channel maintenance depth of water H for section design water level Z, the dam crest plane A's
Elevation of the elevation higher than the dam crest plane B.
2. the compound ground sills of mountain stream curved road type Shoal Regulation is used for according to claim 1, it is characterised in that described multiple
Formula ground sills is connected from dam crest to dam bottom by slope, and the upstream face gradient is 1:1.5, the back side gradient is 1:2.0, the domatic slope
Spend is 1:2.
3. the compound ground sills of mountain stream curved road type Shoal Regulation is used for according to claim 2, it is characterised in that described
Safeguard structure is equipped with upstream face and the dam crest face.
4. the compound ground sills of mountain stream curved road type Shoal Regulation is used for according to claim 1, it is characterised in that described multiple
Formula ground sills throws block stone structure using scattered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377641.XU CN206279493U (en) | 2016-12-15 | 2016-12-15 | A kind of compound ground sills for mountain stream curved road type Shoal Regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377641.XU CN206279493U (en) | 2016-12-15 | 2016-12-15 | A kind of compound ground sills for mountain stream curved road type Shoal Regulation |
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| Publication Number | Publication Date |
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| CN206279493U true CN206279493U (en) | 2017-06-27 |
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| CN201621377641.XU Expired - Fee Related CN206279493U (en) | 2016-12-15 | 2016-12-15 | A kind of compound ground sills for mountain stream curved road type Shoal Regulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498899A (en) * | 2016-12-15 | 2017-03-15 | 交通运输部天津水运工程科学研究所 | A kind of compound ground sills for mountain stream curved road type Shoal Regulation |
-
2016
- 2016-12-15 CN CN201621377641.XU patent/CN206279493U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498899A (en) * | 2016-12-15 | 2017-03-15 | 交通运输部天津水运工程科学研究所 | A kind of compound ground sills for mountain stream curved road type Shoal Regulation |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 Termination date: 20201215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |