CN109811729A - The controlled discharge structure and its method of barrier lake emergency disposal - Google Patents
The controlled discharge structure and its method of barrier lake emergency disposal Download PDFInfo
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- CN109811729A CN109811729A CN201910228288.0A CN201910228288A CN109811729A CN 109811729 A CN109811729 A CN 109811729A CN 201910228288 A CN201910228288 A CN 201910228288A CN 109811729 A CN109811729 A CN 109811729A
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Abstract
The present invention, which discloses, is related to barrier lake emergency disposal technical field, the controlled discharge structure and its method of especially a kind of barrier lake emergency disposal, the controlled discharge structure of barrier lake emergency disposal includes dredging flow groove, along water (flow) direction, dredging flow groove is located at the middle and lower part of damming body, it further include anti-impact brush configuration, antiscour structure setting is in dredging flow groove.When the water of barrier lake is flow in drain tank, anti-impact brush configuration hinders the water flow in dredging flow groove, reduce the impact force of water flow, significantly reduce the peak value and flow velocity of water flow, damming body caused by damming body is washed away because of aerial drainage is extended to burst the time, also reduce downstream along the river two sides flood height and wash away range, the destruction and loss in downstream are reduced as far as possible, improve the protection to downstream ecology environment, it can be seen that, the aerial drainage structure and its method of barrier lake processing of the invention, structure is simple, high treating effect, realize the control of the size and flow velocity to drain tank water, significantly improve the safety of barrier lake processing.
Description
Technical field
The present invention relates to barrier lake emergency disposal technical field, especially a kind of controlled discharge knot of barrier lake emergency disposal
Structure and its method.
Background technique
Barrier lake burst generation flood, the secondary disasters such as flooding, the two sides security of the lives and property and society pass through along the river to downstream
Ji development generates great adverse effect.Two major classes method of disposal is generally used to the disposition of barrier lake, one is artificial passive place
Method is set, i.e., to method that is some smaller or threatening little barrier lake generally to use artificial not intervention, and it is allowed to burst naturally,
Only take the methods of reinforcement monitoring, prediction, the precondition of this kind of barrier lake disposition is that nature bursts will not to human society
Harmful or detrimental effect is generated, and disaster occurs, development is until the overall process withered away is totally controllable.Such as in October, 2018
There is the barrier lake of small-scale respectively in 10-12 days Jinsha jiang River upstream and the Yarlung Zangbo River in 17-19 days October, water when being formed
Position and the height of damming body are not much different (i.e. energy difference is smaller), and energy difference is at 5 meters hereinafter, barrier lake storage capacity (water) is equal simultaneously
Less than 300,000,000 m3.The second is artificial active process, it is more than that 5 meters or barrier lake storage capacity (water) are greater than 300,000,000 that this, which is to energy difference,
m3Barrier lake, the energy difference or storage capacity (water) of these barrier lakes are larger, the disposition for these barrier lakes, in addition to
Other than monitoring, prediction, it then follows the disposition principle of " safe, scientific, quick " takes the mode of artificial pro-active intervention manually to be drawn
Stream makes damming body gradually burst, barrier lake is gradually withered away, mainly pass through mechanically or manually and be aided with Blasting Excavation dredging flow groove etc.
What method was realized.No matter which kind of specific method, form dredging flow groove so that artificial drainage is most basic method, the purpose is to accelerate
Drainage process makes damming body generate to burst as early as possible and overcurrent and barrier lake is made to be not to gather too big water, to fast implement
Eliminate the purpose of dangerous situation.
Currently, disposing the weir that energy difference, storage capacity (water) are larger or need to dispose as early as possible using the second way
When filling in lake, due to the water size and flow velocity progress manual control not to drain tank, so that some damming bodies are in aerial drainage-
Erosion-is burst during stream, and the overcurrent flow of dredging flow groove is too big to form so-called " wink bursts ", i.e., damming body is burst in a very short period of time
Certainly, thereby result in the extremely strong scouring force of downstream river course, excessive flow and it is excessively high flood water level, thus considerably beyond downstream spy
The safe ability to bear for levying section (such as city, town and bridge, the special facility in power station along the river), leads to the generation of big flood.Anti- mistake
For, it in the past to the disposition of barrier lake, exactly excavates a dredging flow groove and is got over forming artificial drainage, there is no according under river
The flood control standard for swimming the section that some should carry out flood control protection carrys out the anti-aerial drainage disposition for pushing away barrier lake, to realize human controllable
" being let out under safety ".For example, the artificial disposition of the upstream of Jinsha jiang River in 2018 " 11.03 " barrier lake, the flood that last crevasse is formed
Up to 32000 seconds cubes, far super universal section mill, as a result to downstream bridge with destructiveness impact, some power stations, which also suffer from, is not answered
Some losses, thus current barrier lake disposition is not very successfully.The Tibet that on April 9th, 2000 is formed for another example is easy
Tribute landslide barrier lake burst within 10th to June, formed about 28.8 billion cubic meter of storage capacity, due to lack disposition experience, only high 60 meters,
Excavated dredging flow groove in long 2500 meters of damming body, in this way by the flowing water peak flow that bursts caused by artificial drainage up to 1.2 ×
105Hundred million m3/ s, unprecedented flood tide flood make original Yi Gonghu come to naught, cause downstream considerable damage, barrier lake
Disposition effect is poor, and safety is lower.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of barrier lake emergency disposals that disposition effect is good, highly-safe
Controlled discharge structure.
The present invention solves the controlled discharge structure of barrier lake emergency disposal used by its technical problem, including dredging flow groove,
Along water (flow) direction, it further includes anti-impact brush configuration, antiscour structure setting is in dredging flow groove that dredging flow groove, which is located at the middle and lower part of damming body,
In.
Further, antiscour structure setting passes through anti-impact brush configuration in the middle part of dredging flow groove, water flow along water (flow) direction
Afterwards, flow velocity is less than 6m/s.
Further, block stone of the anti-impact brush configuration by muti-piece partial size in 0.6m or more is constituted, all blocks of stones are spaced apart from each other
It is arranged, the spacing between adjacent block stone is 2-4m.
Further, all blocks of stones are linked together by connecting net.
Further, connection Netcom crosses flexible material and is made.
Further, the two sides of dredging flow groove are provided with the block stone that muti-piece is spaced apart.
Another technical problems to be solved of the invention are to provide a kind of barrier lake that disposition effect is good, highly-safe
The method of emergency disposal.
The method that the present invention solves barrier lake emergency disposal used by its technical problem, includes the following steps:
A, the water of barrier lake is assessed；
If b, energy difference < 5m of barrier lake, and the water of barrier lake < 300,000,000 m3, at the mode of taking nature to burst
It sets；If energy difference >=5m of barrier lake, alternatively, the water of barrier lake >=300,000,000 m3, along water (flow) direction, in the middle and lower part of damming body
Above-mentioned controlled discharge structure is set.
Preferably, in step a, the water of barrier lake, energy difference are assessed, in stepb, if barrier lake
Energy difference >=5m, alternatively, the water of barrier lake >=300,000,000 m3, anti-impact brush configuration is made of the block stone around barrier lake.
Preferably, in stepb, if energy difference >=5m of barrier lake, alternatively, the water of barrier lake >=300,000,000 m3, on weir
The upper surface of cock body is provided with ruggedized construction, and ruggedized construction is made of the stone around muti-piece barrier lake, and the partial size of stone is in 1m
More than, the spacing between adjacent stone is 2-5m.
Preferably, in stepb, if the water of barrier lake >=1,000,000,000 m3, the mode of explosion is first passed through, by barrier lake point
For multiple mutually independent sub- barrier lakes, then the middle and lower part of the damming body in every sub- barrier lake is respectively set above-mentioned control and lets out
Flow structure.
The beneficial effects of the present invention are: by being arranged anti-impact brush configuration in dredging flow groove, the water flow aerial drainage of barrier lake is to letting out
When in sink, anti-impact brush configuration hinders the water flow in dredging flow groove, reduces the impact force of water flow, to significantly reduce
The peak value and flow velocity of water flow, extend the time of aerial drainage, that is to say that extending damming body caused by damming body is washed away because of aerial drainage bursts
The certainly time, at the same also reduce the downstream feature cross-section of river and along the river two sides flood height and wash away range, reduce as far as possible
The destruction and loss in downstream, improve the protection of downstream ecology environment, it is seen then that the control of barrier lake emergency disposal of the invention is let out
Flow structure and its method, structure is simple, and disposition effect is good, realizes the control of the size and flow velocity to drain tank water, significantly
The safety and reliability of barrier lake disposition is improved, meanwhile, anti-impact brush configuration is made of the block stone around barrier lake, cost
It is low, convenient transportation, the emergency disposal especially suitable for barrier lake.
Detailed description of the invention
Fig. 1 is the schematic side view of barrier lake；
Fig. 2 is the schematic top plan view of barrier lake；
Fig. 3 is the schematic diagram after barrier lake explosion；
Components, position and number in figure: damming body 1, anti-impact brush configuration 3, block stone 31, connection net 32, adds dredging flow groove 2
Fixing structure 4, sub- barrier lake 5.
Specific implementation method
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1 and Figure 2, the present invention includes dredging flow groove 2, along water (flow) direction, under dredging flow groove 2 is located in damming body 1
Portion, further includes anti-impact brush configuration 3, and anti-impact brush configuration 3 is arranged in dredging flow groove 2.
The effect of anti-impact brush configuration 3 is hindered the water flow in dredging flow groove 2, is reduced the impact force of water flow, is reduced
The peak value and flow velocity of water flow, extend the time of aerial drainage.The section configuration of dredging flow groove 2 is preferably rectangle, triangle, trapezoidal.In order to
It is quick and convenient, anti-impact brush configuration 3 is set at low cost, anti-impact brush configuration 3 is made of the block stone 31 around muti-piece barrier lake, namely
Be block stone 31 be damming body 1 on it is existing, directly mechanically transported and mated formation.By largely practicing and testing
In obtain, preferably in 0.6m or more, the partial size of block stone 31 refers to shortest between the left and right sides of block stone 31 partial size of block stone 31
Distance, partial size 0.6m or more 31 weight of block stone usually at 600 kilograms or more, all blocks of stones 31 are spaced apart from each other setting, adjacent
Spacing between block stone 31 is 2-4m, that is to say that spacing is 3-6 times of 31 partial size of block stone, and water flow passes through between block stone 31, from
And realize the control of the size and flow velocity to the water of drain tank 2.In the case of lower for the flow velocity of flowing water in dredging flow groove 2
When, directly block stone 31 is mated formation in dredging flow groove 2, but when situation higher for the flow velocity of flowing water in dredging flow groove 2, in order to
The using effect for guaranteeing anti-impact brush configuration 3, further increases the anti-impact brushing force of anti-impact brush configuration 3, all blocks of stones 31 pass through connection
Net 32 links together, and block stone 31 is wrapped up or block stone 31 is pushed down mode and is attached by connection net 32, and connection net 32 makes to resist
It washes away structure 3 to be integral, improves the whole erosion-resisting characteristics of anti-impact brush configuration 3.Connection net 32 is preferably made up of flexible material,
Such as steel mesh, steel wire.
In order to reduce downstream, two sides flood height and wash away range along the river, reduce the destruction and damage in downstream as far as possible
It loses, by obtaining in largely practicing and testing, along water (flow) direction, the middle and lower part of dredging flow groove 2, water flow is arranged in anti-impact brush configuration 3
After anti-impact brush configuration 3, flow velocity is less than 6m/s, meets the flow rates demand let out under safety.
When the flowing water flow in dredging flow groove 2 is excessive, the flowing water of dredging flow groove 2 may come up, in order to further reduced
Downstream along the river two sides flood height and wash away range, the two sides of dredging flow groove 2 are provided with the block stone 31 that muti-piece is spaced apart, simultaneously
The block stone 31 of the two sides of dredging flow groove 2 and the block stone 31 in anti-impact brush configuration 3 are linked together by connection net 32.
Downstream river course along the distribution of range of flow size and water level determine downstream along the river two sides flood height and wash away model
It encloses, in order to guarantee 1 downstream river course of damming body along the calculating accuracy of Cheng Shuiliang, flow, energy, the present invention proposes disconnected according to river
Face and stream gradient carry out Difference Calculation acquisition, specifically: by bare flow calculation formula: Q=AV can be obtained: dQ=AdV+
VdA, in formula, the river A- is set to the cross-section of river (using damming body Longkou as coordinate origin) at z in place, remembers A=A (z, h), h-
For flow depth herein；Flow rate of water flow at V-river location z remembers V=V (z, J) that J- is hydraulic gradient herein.
To obtain:
Water equation:
Flow equation:
Energy equation (D.Bernolli equation):
By formula (1), (2), (3), downstream river course is finally obtained along the water level of journey and the numerical value of flow, this mode is not
Need to consider that any hypothesis situation, the accuracy of result value are high.By accurate downstream river course along the water level and flow of journey
Numerical value instructs the setting of anti-impact brush configuration 3, further increases the disposition effect of barrier lake emergency disposal, avoids accidents.
The present invention also provides a kind of methods of barrier lake emergency disposal, include the following steps:
A, the water of barrier lake is assessed；
If b, energy difference < 5m of barrier lake, and the water of barrier lake < 300,000,000 m3, at the mode of taking nature to burst
It sets；If energy difference >=5m of barrier lake, alternatively, the water of barrier lake >=300,000,000 m3, along water (flow) direction, in the middle and lower part of damming body 1
Above-mentioned controlled discharge structure is set, and the energy difference of barrier lake refers to the difference between 1 height of damming lake stage and damming body.
In step a, the water of barrier lake, energy difference are assessed by experience or instrument.In stepb, resist
Structure 3 is washed away to be made of the block stone 31 around barrier lake, that is to say stone be damming body 1 on it is existing, directly by machinery
Mode is transported and is mated formation.For the partial size of block stone 31 preferably in 0.6m or more, the partial size of block stone 31 refers to block stone 31 or so two
Shortest distance between side, partial size 0.6m or more 31 weight of block stone usually at 600 kilograms or more, all blocks of stones 31 are mutual
Spacing between setting, adjacent block stone 31 is 2-4m, that is to say that spacing is 3-6 times of 31 partial size of block stone, and water flow is from block stone 31
Between pass through, block stone 31 will not be washed away, guarantee anti-impact brush configuration 3 using effect, to realize the water to drain tank 2
Size and flow velocity control.
In order to delay damming body 1 erosion damage so that it is whole burst, then as shown in Figure 1, in stepb, in damming body 1
Upper surface be provided with ruggedized construction 4, ruggedized construction 4 is made of the stone around muti-piece barrier lake, the partial size of stone 1m with
On, the spacing between adjacent stone is 2-5m, array pitch 3-5m.The formation of ruggedized construction 4 washes away protection and drop to 1 upper surface of damming body
The pad face of low erosive velocity.
1,000,000,000 m are greater than for water3Huge barrier lake, if directly the water in barrier lake carried out by dredging flow groove 2
Drainage, the peak value and flow velocity of 2 water flow of dredging flow groove are still very big, and the present invention is directed to the method for disposal of such barrier lake are as follows: in step b
In, the mode of explosion is first passed through, barrier lake is divided into multiple mutually independent sub- barrier lakes 5, then on the weir of every sub- barrier lake 5
Above-mentioned aerial drainage structure is respectively set in 1 middle and lower part of cock body.As shown in figure 3, barrier lake is divided into 3 sub- barrier lakes, 5,3 sub- weirs
Plug lake 5 is set everywhere respectively, successively eliminates the water of three sub- barrier lakes, to sum up explaining that " human-generated explosives are classified into
Lake, be segmented flood discharge, gradually disappear danger " mode.
In conclusion the water flow aerial drainage of barrier lake is into drain tank 2 by the way that anti-impact brush configuration 3 is arranged in dredging flow groove 2
When, anti-impact brush configuration 3 hinders the water flow in dredging flow groove 2, the impact force of water flow is reduced, to significantly reduce water flow
Peak value and flow velocity, the time of aerial drainage is extended, when that is to say that extending damming body caused by damming body 1 is washed away because of aerial drainage bursts
Between, it also reduces the downstream feature cross-section of river and two sides floods height and wash away range along the river, reduction downstream is broken as far as possible
Bad and loss, improves the protection of downstream ecology environment, it is seen then that the controlled discharge structure of barrier lake emergency disposal of the invention and
Its method, structure is simple, and disposition effect is good, realizes the control of the size and flow velocity to 2 water of drain tank, significantly improves weir
The safety and reliability of lake disposition is filled in, meanwhile, anti-impact brush configuration 3 is made of the block stone 31 around barrier lake, and it is at low cost, it is convenient
Transport, the emergency disposal especially suitable for barrier lake.
Claims (10)
1. the controlled discharge structure of barrier lake emergency disposal, including dredging flow groove (2), along water (flow) direction, dredging flow groove (2) is located at damming
The middle and lower part of body (1), it is characterised in that: further include anti-impact brush configuration (3), anti-impact brush configuration (3) is arranged in dredging flow groove (2).
2. the controlled discharge structure of barrier lake emergency disposal as described in claim 1, it is characterised in that: along water (flow) direction, resist
Structure (3) setting is washed away at the middle part of dredging flow groove (2), and after water flow passes through anti-impact brush configuration (3), flow velocity is less than 6m/s.
3. the controlled discharge structure of barrier lake emergency disposal as described in claim 1, it is characterised in that: anti-impact brush configuration (3)
Block stone (31) by muti-piece partial size in 0.6m or more is constituted, and all pieces of stones (31) are spaced apart from each other setting, between adjacent block stone (31)
Spacing be 2-4m.
4. the controlled discharge structure of barrier lake emergency disposal as claimed in claim 3, it is characterised in that: all pieces of stones (31) are logical
Connection net (32) is crossed to link together.
5. the controlled discharge structure of barrier lake emergency disposal as claimed in claim 4, it is characterised in that: connection net (32) passes through
Flexible material is made.
6. the controlled discharge structure of the barrier lake emergency disposal as described in claim 1 to 5 any one, it is characterised in that: let out
The two sides of chute (2) are provided with the block stone (31) that muti-piece is spaced apart.
7. the method for barrier lake emergency disposal, which comprises the steps of:
A, the water of barrier lake is assessed；
If b, energy difference < 5m of barrier lake, and the water of barrier lake < 300,000,000 m3, the mode for taking nature to burst is disposed；If weir
Energy difference >=the 5m for filling in lake, alternatively, the water of barrier lake >=300,000,000 m3, along water (flow) direction, it is arranged in the middle and lower part of damming body (1)
Controlled discharge structure as described in claim 1 to 6 any one.
8. the method for barrier lake emergency disposal as claimed in claim 7, it is characterised in that: in step a, to the water of barrier lake
Amount, energy difference are assessed, in stepb, if energy difference >=5m of barrier lake, alternatively, the water of barrier lake >=300,000,000 m3, resist
Structure (3) is washed away to be made of the block stone (31) around barrier lake.
9. the method for barrier lake emergency disposal as claimed in claim 7, it is characterised in that: in stepb, if the energy of barrier lake
Difference >=5m is measured, alternatively, the water of barrier lake >=300,000,000 m3, it is provided with ruggedized construction (4) in the upper surface of damming body (1), reinforces knot
Structure (4) is made of the stone around muti-piece barrier lake, and spacing of the partial size of stone between 1m or more, adjacent stone is 2-5m.
10. the method for barrier lake emergency disposal as claimed in claim 7, it is characterised in that: in stepb, if barrier lake
Water >=1,000,000,000 m3, the mode of explosion is first passed through, barrier lake is divided into multiple mutually independent sub- barrier lakes (5), then each
The controlled discharge knot as described in claim 1 to 6 any one is respectively set in the middle and lower part of the damming body (1) of sub- barrier lake (5)
Structure.
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| CN110820695A (en) * | 2019-11-22 | 2020-02-21 | 中国电建集团成都勘测设计研究院有限公司 | Structure and method for controlling dam bursting peak flow of damming dam |
| CN111581579A (en) * | 2020-03-06 | 2020-08-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Method for regulating and controlling drainage of barrier lake |
| CN112482325A (en) * | 2020-11-30 | 2021-03-12 | 中国安能集团第三工程局有限公司 | Reinforcing method for overflowing channel bottom |
| CN112525028A (en) * | 2020-11-30 | 2021-03-19 | 中国安能集团第三工程局有限公司 | Blasting method of drainage groove |
| CN112697627A (en) * | 2021-01-11 | 2021-04-23 | 长江勘测规划设计研究有限责任公司 | Automatic emergency measurement method and equipment for dynamic erosion deformation of weir plug drainage groove |
| CN112878277A (en) * | 2021-03-16 | 2021-06-01 | 长江勘测规划设计研究有限责任公司 | Barrier lake drainage groove chain gabion string body protection structure and use method |
| CN112878276A (en) * | 2021-03-16 | 2021-06-01 | 长江勘测规划设计研究有限责任公司 | Barrier lake drainage groove net chain slope protection structure and method |
| CN113640490A (en) * | 2021-10-18 | 2021-11-12 | 四川省水利科学研究院 | River and lake water ecological environment monitoring device, system and method based on Internet of things |
| CN114457763A (en) * | 2022-03-11 | 2022-05-10 | 黄伟霞 | Hydraulic engineering's drilling of damming dam body is opened a ditch and is discharged a class device |
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| CN110820695A (en) * | 2019-11-22 | 2020-02-21 | 中国电建集团成都勘测设计研究院有限公司 | Structure and method for controlling dam bursting peak flow of damming dam |
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| CN112525028A (en) * | 2020-11-30 | 2021-03-19 | 中国安能集团第三工程局有限公司 | Blasting method of drainage groove |
| CN112697627B (en) * | 2021-01-11 | 2022-06-28 | 长江勘测规划设计研究有限责任公司 | Automatic emergency measurement method and equipment for dynamic erosion deformation of weir plug drainage groove |
| CN112697627A (en) * | 2021-01-11 | 2021-04-23 | 长江勘测规划设计研究有限责任公司 | Automatic emergency measurement method and equipment for dynamic erosion deformation of weir plug drainage groove |
| CN112878276A (en) * | 2021-03-16 | 2021-06-01 | 长江勘测规划设计研究有限责任公司 | Barrier lake drainage groove net chain slope protection structure and method |
| CN112878277A (en) * | 2021-03-16 | 2021-06-01 | 长江勘测规划设计研究有限责任公司 | Barrier lake drainage groove chain gabion string body protection structure and use method |
| CN112878277B (en) * | 2021-03-16 | 2023-12-05 | 长江勘测规划设计研究有限责任公司 | Protective structure of barrier lake drainage groove chain gabion string body and use method |
| CN112878276B (en) * | 2021-03-16 | 2024-03-15 | 长江勘测规划设计研究有限责任公司 | Barrier lake drainage groove net chain slope protection structure and method |
| CN113640490B (en) * | 2021-10-18 | 2022-01-28 | 四川省水利科学研究院 | River and lake water ecological environment monitoring device, system and method based on Internet of things |
| CN113640490A (en) * | 2021-10-18 | 2021-11-12 | 四川省水利科学研究院 | River and lake water ecological environment monitoring device, system and method based on Internet of things |
| CN114457763A (en) * | 2022-03-11 | 2022-05-10 | 黄伟霞 | Hydraulic engineering's drilling of damming dam body is opened a ditch and is discharged a class device |
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