CN104897874A - Method for detecting correlation between mountain river pebble beaches - Google Patents
Method for detecting correlation between mountain river pebble beaches Download PDFInfo
- Publication number
- CN104897874A CN104897874A CN201510257629.9A CN201510257629A CN104897874A CN 104897874 A CN104897874 A CN 104897874A CN 201510257629 A CN201510257629 A CN 201510257629A CN 104897874 A CN104897874 A CN 104897874A
- Authority
- CN
- China
- Prior art keywords
- pebble beach
- pebble
- beach
- section
- mid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention provides a method for detecting correlation between mountain river pebble beaches. The method comprises the following steps of: (1) building a first physical model by taking a real river reach of a to-be-renovated pebble beach as an original model; (2) leading water flows with different flows in the first physical model, measuring the water level and depth of intermediate cross-sections of pebble beaches adjacent to the to-be-renovated pebble beach under different flows, and calculating a critical initial velocity of the intermediate cross-section of each corresponding pebble beach; (3) removing the to-be-renovated pebble beach in the first physical model, leading water flows with the flows above in, measuring the water level and depth of intermediate cross-sections of pebble beaches adjacent to the to-be-renovated pebble beach under different flows, and calculating a critical initial velocity of the intermediate cross-section of each corresponding pebble beach; and (4) comparing the critical initial velocity and water level of pebble particles of the intermediate cross-section of the pebble beaches, in the step (2) and (3), adjacent to the to-be-renovated pebble beach, and determining the correlation of the to-be-renovated pebble beach and the pebble beaches adjacent to the to-be-renovated pebble beach according to the changing situation of the critical initial velocity and water level.
Description
Technical field
The invention belongs to mountain channel pebble beach regulation field, particularly a kind of method of testing interaction relation between mountain channel pebble beach.
Background technology
Mountain stream has slope and suddenly flows urgency, and afflux diffusing process is rapid, spate pelter, water level, fluctuations in discharge the amplitude large and sediment transport capacity change feature such as sharply.Usually, the river valley narrow curved of mountain stream, the rock of two sides is broken because of weathering, and the bed material therefore forming mountain stream riverbed mostly is gravel, cobble carrying material, and bed material particle is thick, grating distribution is wide.A part in this wide grating bed material is under flow action, and slide along bed surface, roll or form traction load at nearly bed surface saltation, along with the change of flow dynamic condition, pebble bed-load often forms various informative pebble beach (see Fig. 1).Such as, as Yibin-Chongqing Section about the total length 340km in the Changjiang river, if according to I grade of navigation channel requirement, the section, Chongqing of chatting in Yibin-Chongqing Section has danger, 68 beaches, has 9, pebble beach 59 comprising anxious beach and dangerous shoal.The existence of pebble beach governs the differentiation of bed configuration, and can cause serious adverse effect to the normal pass in mountain stream navigation channel.
Along with the continuous increase of shipping demand, mountain stream navigation channel pebble beach regulation problem becomes very outstanding.At present, in the pebble beach Remedial Practice in mountain stream navigation channel, engineerings such as digging beach, groynes, closure dam is usually adopted to carry out the regulation of boat groove for single pebble beach.And engineering practice shows, after single pebble beach regulation, although the problem of single pebble beach deaden the way can be solved, but the differentiation of the pebble beach adjacent with this pebble beach may be accelerated, occur that pebble beach is unstable and the phenomenon increased the weight of of depositing, the whole structure causing pebble beach to be renovated is undesirable, does not even reach renovating effect.This mainly because the formation mechenism of pebble beach is complicated, mutually restricts between upstream and downstream pebble beach, may there is mutual connected effect between adjacent pebble beach, carry out renovating for single pebble beach, have ignored the interlock impact between adjacent pebble beach.Such as, after within 2006, adopting the mode of the single pebble beach of regulation to renovate the sub-pebble beach of bamboo hat of Upper Yangtze River, owing to renovating the change in its outlet sediment transport path rear, cause the alluvial on the beach, the left side of its downstream Dong Xikou accelerate and increase the weight of, seriously tie up navigation channel.Pebble beach regulation is the channel maintenance measure of a large amount of labor intensive, material resources and financial resources, if cause the alluvial phenomenon of adjacent upstream or downstream pebble beach to increase the weight of after single pebble beach regulation, this not only can cause the serious waste of human and material resources, and its upstream or downstream pebble beach alluvial phenomenon increase the weight of the normal pass that again can affect navigation channel, thus need again even repeatedly repeatedly to renovate, cause regulation cost very high.Based on the present situation of pebble beach regulation, develop a kind of method of testing interaction relation between mountain channel pebble beach, test in advance before pebble beach regulation between the pebble beach that pebble beach to be renovated is adjacent and whether there is interaction relation, for determining that the renovation scheme of mountain stream pebble beach has important directive significance.
Summary of the invention
The object of this invention is to provide the detection method of interaction relation between a kind of mountain channel pebble beach, assess in advance with the interaction relation that the pebble beach treating regulation before pebble beach regulation is adjacent between pebble beach, thus instruct the determination of pebble beach renovation scheme.
The detection method of interaction relation between mountain channel of the present invention pebble beach, step is as follows:
(1) the actual section renovated with pending pebble beach is for prototype, build the first physical model, the actual section of described pending pebble beach regulation comprise treat regulation pebble beach, at least one waits to renovate the adjacent pebble beach of pebble beach with this, contain in described first physical model and the position of pebble beach in actual section and plesiomorphic pebble beach;
(2) in the first physical model, introduce the current of different flow, when measure after waterflow stabilization and under recording different flow condition in the first physical model with water level and the depth of water for the treatment of renovate the adjacent each pebble beach mid-section of pebble beach, under calculating different flow condition by formula (1) and wait the critical incipient motion flow velocity of renovating the adjacent each pebble beach mid-section cobble particle of pebble beach;
In formula (1), U
cfor the critical incipient motion flow velocity of the cobble particle of pebble beach mid-section, g is acceleration of gravity, and h is the depth of water of pebble beach mid-section, and d is the mean grain size of the cobble particle of pebble beach;
(3) remove in the first physical model treating regulation pebble beach form the second physical model, then in the second physical model, current are introduced according to the flow in step (2), when measure after waterflow stabilization and to record in the second physical model under different flow condition with water level and the depth of water for the treatment of the mid-section of renovate the adjacent each pebble beach of pebble beach, under calculating different flow by formula (1) and wait the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach;
(4) by step (2) and step (3) gained with wait to renovate the critical incipient motion flow velocity of cobble particle of the adjacent each pebble beach mid-section of pebble beach, the water level of mid-section compares respectively:
If step (3) gained with treat that the critical incipient motion flow velocity of the cobble particle of renovate the adjacent pebble beach mid-section of pebble beach is less than step (2) gained and waits the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach, and measure in step (3) middle that measure with the water level of waiting to renovate the adjacent pebble beach mid-section of pebble beach lower than step (2) with the water level treating renovate the adjacent pebble beach mid-section of pebble beach, then there is interaction relation between this pebble beach and pebble beach to be removed;
If step (3) gained with treat that the critical incipient motion flow velocity of the cobble particle of renovate the adjacent pebble beach mid-section of pebble beach is more than or equal to step (2) gained and waits the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach, then there is not interaction relation between this pebble beach and pebble beach to be removed;
If step (3) gained with treat that the critical incipient motion flow velocity of the cobble particle of renovate the adjacent pebble beach mid-section of pebble beach is less than step (2) gained and waits the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach, and measure in step (3) to be equal to or higher than step (2) middle that measure with the water level of waiting to renovate the adjacent pebble beach mid-section of pebble beach with the water level for the treatment of renovate the adjacent pebble beach mid-section of pebble beach, then there is not interaction relation between this pebble beach and pebble beach to be removed.
In said method, the guide of described first physical model and actual section with model test simulated condition for according to carrying out choosing described model test simulated condition see Wu Chigong, hydraulics (the 4th edition, volume two), Beijing: Higher Education Publishing House, pp327-346.
In said method, step (1) is when structure the first physical model, first build the physical model not comprising pebble beach, then in described reason model, adopt cobble particle packing to form pebble beach according to the position of pebble beach in actual section and form or the current accumulation introduced in described physical model containing cobble particle forms pebble beach.Due to by containing introducing in the physical model of pebble beach, to form the position of pebble beach and the degree of closeness of form in the position of the pebble beach that the mode of pebble beach is formed and form and true section containing the current accumulation of cobble particle not higher, therefore, the method is preferably adopted to form pebble beach.In step (1), when adopting the current introduced in the physical model not comprising pebble beach containing cobble particle to form pebble beach, the flow of silt carrying flow to reduce according to the guide of the first physical model and actual section according to the flow of actual section and obtains.
In the step (1) of said method, the particle diameter of described cobble particle to reduce according to the guide of the first physical model and actual section according to cobble grain diameter in actual section and obtains.
The water level at each pebble beach mid-section place and bathymetric data under at least measuring three different flows in the step (2) of said method and (3).
In the step (2) of said method and (3), water flow to reduce according to the guide of the first physical model and actual section according to the flow of actual section and obtains.
In said method, the data on flows of described actual section obtains by the hydrologic data consulting this actual section, when not this actual river section hydrology data, is obtained by the hydrologic data of this actual section of actual measurement.
In said method, between described mountain channel pebble beach, interaction relation refers to when pebble beach is renovated, incidence relation between the pebble beach that pebble beach to be renovated is adjacent, if remove after the pebble beach administered, cause the position of the pebble beach be adjacent and the change of accumulation situation, then there is interaction relation between them, if remove after the pebble beach administered, do not cause the position of the pebble beach be adjacent and the change of accumulation situation, then there is not interaction relation between them.
Compared with prior art, the present invention has following beneficial effect:
1, the invention provides the detection method of interaction relation between a kind of mountain channel pebble beach, because the method can detect pebble beach to be renovated is adjacent between pebble beach whether there is interaction relation, therefore before actual pebble beach regulation, by the method for the invention, the interaction relation that the pebble beach intending renovating is adjacent between pebble beach is tested in advance, contribute to determining follow-up pebble beach renovation scheme, thus avoid directly for the problem that renovating effect is poor and regulation cost is high that may occur after single pebble beach regulation.
2, the method for the invention not only can provide guidance for the regulation of pebble beach, assist and determine the better pebble beach renovation scheme of specific aim, thus make the renovating effect of the pebble beach that there is interaction relation reliable for a long time, but also can be used in disclosing shingle bed development law.
3, the method for the invention is simple to operate, and can reflect whether there is interaction relation between the pebble beach that the pebble beach of intending carrying out renovating is adjacent rapidly and accurately.
Accompanying drawing explanation
Fig. 1 is the photo of mountain channel pebble beach, and wherein (a) figure, (b) figure are the photos of two kinds of mountain channel pebble beaches;
Fig. 2 is the photo of the first physical model built in embodiment 1,2 and the shape of pebble beach wherein and position view, I-upstream pebble beach in figure, II-middle reaches pebble beach, III-downstream pebble beach;
Fig. 3 is the photo of the second physical model in embodiment 1 and the shape of pebble beach wherein and position view, I-upstream pebble beach in figure, III-downstream pebble beach;
Fig. 4 is the water level-discharge relation figure removed in embodiment 1 before and after the pebble beach of middle reaches, and wherein (a) figure, (b) figure represent the water level-discharge relation figure of 8 and No. 2 sections respectively;
Fig. 5 is the critical incipient motion flow velocity-discharge relation figure removed in embodiment 1 before and after the pebble beach of middle reaches, and wherein (a) figure, (b) figure represent the critical incipient motion flow velocity-discharge relation figure of 8 and No. 2 sections respectively;
Fig. 6 is the photo of the second physical model in embodiment 2 and the shape of pebble beach wherein and position view, I-upstream pebble beach in figure, II-middle reaches pebble beach;
Fig. 7 is the water level-discharge relation figure removed in embodiment 2 before and after the pebble beach of downstream, and wherein (a) figure, (b) figure represent the water level-discharge relation figure of 8,5 and No. 2 sections respectively;
Fig. 8 is the critical incipient motion flow velocity-discharge relation figure removed in embodiment 2 before and after the pebble beach of downstream, and wherein (a) figure, (b) figure represent the critical incipient motion flow velocity-discharge relation figure of 8,5 and No. 2 sections respectively.
Embodiment
By the following examples and by reference to the accompanying drawings the detection method of interaction relation between mountain channel of the present invention pebble beach is described further.
Embodiment 1
In the present embodiment, between described mountain channel pebble beach, the detection method step of interaction relation is as follows:
(1) using the object that upstream, Dujiang weir section natural river course is renovated as pending pebble beach, this section of natural river course comprises three pebble beaches.With above-mentioned actual section for prototype, first the physical model not comprising pebble beach is built, the guide of this physical model and actual section is 1:20, then the current of cobble particle (particle diameter is 2 ~ 4mm) are not contained containing introducing in the physical model of pebble beach to this, the flow of the silt carrying flow introduced carries out reducing obtaining according to the guide of physical model and actual section according to the flow of actual section, cobble particle in the silt carrying flow introduced finally is accumulated and is formed and position and plesiomorphic three pebble beaches in actual section, the first physical model should be by physical model containing pebble beach, the photo of the first physical model as shown in Figure 2, in physical model, basic point elevation is 2m.Mark the middle cross-sectional location of three pebble beach-upstream pebble beach I, middle reaches pebble beach II and downstream pebble beach III in the first physical model, be respectively No. 8 in Fig. 2, No. 5 and No. 2 sections, using middle reaches pebble beach as waiting to renovate pebble beach, the interaction relation between the upstream pebble beach that detection middle reaches pebble beach is adjacent and downstream pebble beach.
(2) according to the flow in table 1, introduce the current of different flow to the first physical model from the upstream of the first physical model, after the waterflow stabilization in the first reason model, measure and the water level Z of mid-section-No. 8 section of upstream pebble beach adjacent with middle reaches pebble beach and mid-section-No. 2 section of downstream pebble beach and depth of water h under being recorded in each flow condition, bathymetric survey result is as shown in table 1, with flow Q for horizontal ordinate, water level is ordinate mapping, obtain the water level-discharge relation figure of No. 8 sections and No. 2 sections, as shown in Figure 4, Fig. 4 (a) is the water level-discharge relation figure of No. 8 sections, Fig. 4 (b) is the water level-discharge relation figure of No. 2 sections.
Table 1 removes the flow before the pebble beach of middle reaches and bathymetric data
Calculated the critical incipient motion flow velocity of the cobble particle of No. 8 sections and No. 2 sections under different water flow by formula (1) according to the bathymetric data in table 1, then be horizontal ordinate, the mapping of critical incipient motion flow velocity ordinate with flow, obtain the critical incipient motion flow velocity-discharge relation figure of the cobble particle of No. 8 sections and No. 2 sections, as shown in Figure 5, the critical incipient motion flow velocity-discharge relation figure of Fig. 5 (a) to be critical incipient motion flow velocity-discharge relation figure, Fig. 5 (b) of No. 8 sections be No. 2 sections.
In formula (1), U
cfor the critical incipient motion flow velocity of the cobble particle of pebble beach mid-section, g is acceleration of gravity, and h is the depth of water of pebble beach mid-section, and d is the mean grain size of cobble particle.
(3) the middle reaches pebble beach removed in the first physical model forms the second physical model, the photo of the second physical model as shown in Figure 3, then according to the flow in table 2, to the second physical model, the current of different flow are introduced from the upstream extremity of the second physical model, after the waterflow stabilization in the second physical model, measure and be recorded in water level Z and the depth of water h of lower No. 8 sections of each flow condition and No. 2 sections, bathymetric survey result is as shown in table 2, take flow as horizontal ordinate, water level is ordinate mapping, obtain the water level-discharge relation figure of No. 8 sections and No. 2 sections, as shown in Figure 4, Fig. 4 (a) is the water level-discharge relation figure of No. 8 sections, Fig. 4 (b) is No. 2 section water level-discharge relation figure.
Table 2 removes the flow after the pebble beach of middle reaches and bathymetric data
Calculated the critical incipient motion flow velocity of the cobble particle of No. 2 and No. 8 sections under different flow by formula (1) according to the bathymetric data in table 2, then be horizontal ordinate, the mapping of critical incipient motion flow velocity ordinate with flow, obtain the critical incipient motion flow velocity-discharge relation figure of No. 8 sections and No. 2 section cobble particles, as shown in Figure 5, the critical incipient motion flow velocity-discharge relation figure of Fig. 5 (a) to be critical incipient motion flow velocity-discharge relation figure, Fig. 5 (b) of No. 8 sections be No. 2 sections.
(4) as shown in Figure 5, compared with removing before the pebble beach of middle reaches, after removing middle reaches pebble beach, the critical incipient motion flow velocity U of the cobble particle of No. 8 and No. 2 sections
cdo not change, illustrate to there is not interaction relation between the upstream pebble beach that middle reaches pebble beach is adjacent, between the downstream pebble beach that middle reaches pebble beach is adjacent, there is not interaction relation yet.Meanwhile, find that, after removing middle reaches pebble beach, the position of upstream pebble beach and downstream pebble beach is not moved in process of the test, this is also consistent with the testing result of above-mentioned interaction relation.
Known by the present embodiment, when carrying out pebble beach regulation to upstream, above-mentioned Dujiang weir section natural river course, if using the pebble beach in middle reaches as regulation object, can consider the interlock impact between the upstream that middle reaches pebble beach is adjacent and downstream pebble beach, regulation middle reaches pebble beach can not change the motion conditions of the pebble beach be adjacent separately.
Embodiment 2
In the present embodiment, between described mountain channel pebble beach, the detection method step of interaction relation is as follows:
(1) using the object that upstream, Dujiang weir section natural river course is renovated as pending pebble beach, this section of natural river course comprises three pebble beaches.With above-mentioned actual section for prototype, first the physical model not comprising pebble beach is built, the guide of this physical model and actual section is 1:20, then the current of cobble particle (particle diameter is 2 ~ 4mm) are not contained containing introducing in the physical model of pebble beach to this, the flow of the silt carrying flow introduced carries out reducing obtaining according to the guide of physical model and actual section according to the flow of actual section, cobble particle in the silt carrying flow introduced finally is accumulated and is formed and position and plesiomorphic three pebble beaches in actual section, the first physical model should be by physical model containing pebble beach, the photo of the first physical model as shown in Figure 2, in physical model, basic point elevation is 2m.Mark the middle cross-sectional location of three pebble beach-upstream pebble beach I, middle reaches pebble beach II and downstream pebble beach III in the first physical model, be respectively No. 8 in Fig. 2, No. 5 and No. 2 sections, using downstream pebble beach as waiting to renovate pebble beach, the interaction relation between the middle reaches pebble beach that detection downstream pebble beach is adjacent.
(2) according to the flow in table 3, introduce the current of different flow to the first physical model from the upstream of the first physical model, after the waterflow stabilization in the first physical model, measure and the water level Z of No. 5 sections adjacent with downstream pebble beach under being recorded in each flow condition and depth of water h, whether can impact upstream pebble beach to understand removing of downstream pebble beach, while the water level Z and depth of water h of measurement No. 5 sections, also measure and record water level Z and the depth of water h of No. 8 sections, bathymetric survey result is as shown in table 3, with flow Q for horizontal ordinate, water level is ordinate mapping, obtain the water level-discharge relation figure of No. 5 sections and No. 8 sections, as shown in Figure 7, wherein Fig. 7 (a) is the water level-discharge relation figure of No. 5 sections, Fig. 7 (b) is the water level-discharge relation figure of No. 8 sections.
Table 3 removes the flow before the pebble beach of downstream and bathymetric data
Calculated the critical incipient motion flow velocity of the cobble particle of No. 5 and No. 8 sections under different flow by formula (1) according to the bathymetric data in table 3, then be horizontal ordinate with flow, critical incipient motion flow velocity maps for ordinate, obtain the critical incipient motion flow velocity-discharge relation figure of No. 5 and No. 8 section cobble particles, as shown in Figure 8, the critical incipient motion flow velocity-discharge relation figure of Fig. 8 (a) to be critical incipient motion flow velocity-discharge relation figure, Fig. 8 (b) of No. 5 sections be No. 8 sections.
In formula (1), U
cfor the critical incipient motion flow velocity of the cobble particle of pebble beach mid-section, g is acceleration of gravity, and h is the depth of water of pebble beach mid-section, and d is the mean grain size of cobble particle.
(3) the downstream pebble beach removed in the first physical model forms the second physical model, the photo of the second physical model as shown in Figure 6, then according to the flow in table 4, to the second physical model, the current of different flow are introduced from the upstream extremity of the second physical model, after the waterflow stabilization in the second physical model, measure and be recorded in water level Z and the depth of water h of lower No. 5 sections of each flow condition and No. 8 sections, bathymetric survey result is as shown in table 4, take flow as horizontal ordinate, water level is ordinate mapping, obtain the water level-discharge relation figure of No. 5 and No. 8 sections, as shown in Figure 7, Fig. 7 (a) is the water level-discharge relation figure of No. 5 sections, Fig. 7 (b) is the water level-discharge relation figure of No. 8 sections.
Table 4 removes the flow after the pebble beach of downstream and bathymetric data
Calculated the critical incipient motion flow velocity of the cobble particle of No. 5 and No. 8 sections under different flow by formula (1) according to the bathymetric data in table 4, then be horizontal ordinate, the mapping of critical incipient motion flow velocity ordinate with flow, obtain the critical incipient motion flow velocity-discharge relation figure of No. 5 sections and No. 8 section cobble particles, as shown in Figure 8, the critical incipient motion flow velocity-discharge relation figure of Fig. 8 (a) to be critical incipient motion flow velocity-discharge relation figure, Fig. 8 (b) of No. 5 sections be No. 8 sections.
(4) from Fig. 8 (a), compared with removing before the pebble beach of downstream, after removing downstream pebble beach, the critical incipient motion flow velocity U of the cobble particle of No. 5 sections
cobvious reduction, and from Fig. 7 (a), the water level of No. 5 sections obviously reduces, and illustrates to there is interaction relation between the middle reaches pebble beach that downstream pebble beach is adjacent.Meanwhile, observe find after removing downstream pebble beach in test, middle reaches pebble beach downstream there occurs movement, and this is consistent with the testing result of above-mentioned interaction relation.
From Fig. 8 (b) and Fig. 7 (b), compared with removing before the pebble beach of downstream, after removing downstream pebble beach, the critical incipient motion flow velocity U of the cobble particle of No. 8 sections
creduce, the water level of No. 8 sections also decreases, and observe find after removing downstream pebble beach in test, the position of upstream pebble beach also downstream there occurs movement, just mobile do not have middle reaches pebble beach obvious, this is the movement causing middle reaches pebble beach owing to removing downstream pebble beach, and the movement of middle reaches pebble beach causes impact to upstream pebble beach.
Known by the present embodiment, when carrying out pebble beach regulation to upstream, above-mentioned Dujiang weir section natural river course, if using the pebble beach in downstream as regulation object, because removing of downstream pebble beach can cause middle reaches pebble beach and upstream pebble beach instability, therefore must consider the interlock impact between the middle reaches pebble beach that downstream pebble beach is adjacent, downstream pebble beach can not be renovated separately.
Claims (10)
1. the detection method of interaction relation between mountain channel pebble beach, is characterized in that step is as follows:
(1) the actual section renovated with pending pebble beach is for prototype, build the first physical model, the actual section of described pending pebble beach regulation comprise treat regulation pebble beach, at least one waits to renovate the adjacent pebble beach of pebble beach with this, contain in described first physical model and the position of pebble beach in actual section and plesiomorphic pebble beach;
(2) in the first physical model, introduce the current of different flow, when measure after waterflow stabilization and under recording different flow condition in the first physical model with water level and the depth of water for the treatment of renovate the adjacent each pebble beach mid-section of pebble beach, under calculating different flow condition by formula (1) and wait the critical incipient motion flow velocity of renovating the adjacent each pebble beach mid-section cobble particle of pebble beach;
In formula (1), U
cfor the critical incipient motion flow velocity of the cobble particle of pebble beach mid-section, g is acceleration of gravity, and h is the depth of water of pebble beach mid-section, and d is the mean grain size of the cobble particle of pebble beach;
(3) remove in the first physical model treating regulation pebble beach form the second physical model, then in the second physical model, current are introduced according to the flow in step (2), when measure after waterflow stabilization and to record in the second physical model under different flow condition with water level and the depth of water for the treatment of the mid-section of renovate the adjacent each pebble beach of pebble beach, under calculating different flow by formula (1) and wait the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach;
(4) by step (2) and step (3) gained with wait to renovate the critical incipient motion flow velocity of cobble particle of the adjacent each pebble beach mid-section of pebble beach, the water level of mid-section compares respectively:
If step (3) gained with treat that the critical incipient motion flow velocity of the cobble particle of renovate the adjacent pebble beach mid-section of pebble beach is less than step (2) gained and waits the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach, and measure in step (3) middle that measure with the water level of waiting to renovate the adjacent pebble beach mid-section of pebble beach lower than step (2) with the water level treating renovate the adjacent pebble beach mid-section of pebble beach, then there is interaction relation between this pebble beach and pebble beach to be removed;
If step (3) gained with treat that the critical incipient motion flow velocity of the cobble particle of renovate the adjacent pebble beach mid-section of pebble beach is more than or equal to step (2) gained and waits the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach, then there is not interaction relation between this pebble beach and pebble beach to be removed;
If step (3) gained with treat that the critical incipient motion flow velocity of the cobble particle of renovate the adjacent pebble beach mid-section of pebble beach is less than step (2) gained and waits the critical incipient motion flow velocity of the cobble particle of renovating the adjacent pebble beach mid-section of pebble beach, and measure in step (3) to be equal to or higher than step (2) middle that measure with the water level of waiting to renovate the adjacent pebble beach mid-section of pebble beach with the water level for the treatment of renovate the adjacent pebble beach mid-section of pebble beach, then there is not interaction relation between this pebble beach and pebble beach to be removed.
2. the detection method of interaction relation between mountain channel pebble beach according to claim 1, is characterized in that the guide of described first physical model and actual section with model test simulated condition for according to choosing.
3. the detection method of interaction relation between mountain channel pebble beach according to claim 1 or 2, it is characterized in that step (1) is when structure the first physical model, first build the physical model not comprising pebble beach, then in described reason model, adopt cobble particle packing to form pebble beach according to the position of pebble beach in actual section and form or the current accumulation introduced in described physical model containing cobble particle forms pebble beach.
4. the detection method of interaction relation between mountain channel pebble beach according to claim 3, when it is characterized in that adopting in step (1) current introduced in the physical model not comprising pebble beach containing cobble particle to form pebble beach, to reduce according to the guide of the first physical model and actual section according to the flow of actual section containing the water flow of cobble particle and obtain.
5. the detection method of interaction relation between mountain channel pebble beach according to claim 1 or 2, is characterized in that the particle diameter of cobble particle described in step (1) to reduce according to the guide of the first physical model and actual section according to cobble grain diameter in actual section and obtains.
6. the recognition methods of interaction relation between mountain channel pebble beach according to claim 1 or 2, the water level at each pebble beach mid-section place and bathymetric data under it is characterized in that at least measuring three different flows in step (2) and (3).
7. the recognition methods of interaction relation between mountain channel pebble beach according to claim 3, the water level at each pebble beach mid-section place and bathymetric data under it is characterized in that at least measuring three different flows in step (2) and (3).
8. the recognition methods of interaction relation between mountain channel pebble beach according to claim 4, the water level at each pebble beach mid-section place and bathymetric data under it is characterized in that at least measuring three different flows in step (2) and (3).
9. the recognition methods of interaction relation between mountain channel pebble beach according to claim 5, the water level at each pebble beach mid-section place and bathymetric data under it is characterized in that at least measuring three different flows in step (2) and (3).
10. the detection method of interaction relation between mountain channel pebble beach according to claim 1 or 2, it is characterized in that in step (2) and (3), water flow to reduce according to the guide of the first physical model and actual section according to the flow of actual section and obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257629.9A CN104897874B (en) | 2015-05-19 | 2015-05-19 | The detection method of interaction relation between a kind of mountain channel pebble beach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257629.9A CN104897874B (en) | 2015-05-19 | 2015-05-19 | The detection method of interaction relation between a kind of mountain channel pebble beach |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104897874A true CN104897874A (en) | 2015-09-09 |
| CN104897874B CN104897874B (en) | 2016-08-17 |
Family
ID=54030667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510257629.9A Expired - Fee Related CN104897874B (en) | 2015-05-19 | 2015-05-19 | The detection method of interaction relation between a kind of mountain channel pebble beach |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104897874B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110728019A (en) * | 2019-09-05 | 2020-01-24 | 四川大学 | Method for identifying disaster-prone area of wide and narrow river section mountain flood inundation disasters based on mountain area river form and flood level change |
| CN114061902A (en) * | 2021-11-29 | 2022-02-18 | 重庆交通大学 | Real-time monitoring device, method and system for egg and gravel transportation based on image method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278427A (en) * | 2013-05-24 | 2013-09-04 | 重庆交通大学 | Method and device for measuring parameters of grait sand waves |
| CN103437319A (en) * | 2013-05-24 | 2013-12-11 | 重庆交通大学 | Method for renovating movable-bed physical model design in upper Yangtze River pebble beach dangerous sea channel |
| JP2014040759A (en) * | 2012-08-21 | 2014-03-06 | Hiroshi Igawa | Tsunami recurved parapet |
| CN104264625A (en) * | 2014-09-23 | 2015-01-07 | 长江航道局 | Mountain river pebble beach group linked renovation method based on gradient principle |
-
2015
- 2015-05-19 CN CN201510257629.9A patent/CN104897874B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014040759A (en) * | 2012-08-21 | 2014-03-06 | Hiroshi Igawa | Tsunami recurved parapet |
| CN103278427A (en) * | 2013-05-24 | 2013-09-04 | 重庆交通大学 | Method and device for measuring parameters of grait sand waves |
| CN103437319A (en) * | 2013-05-24 | 2013-12-11 | 重庆交通大学 | Method for renovating movable-bed physical model design in upper Yangtze River pebble beach dangerous sea channel |
| CN104264625A (en) * | 2014-09-23 | 2015-01-07 | 长江航道局 | Mountain river pebble beach group linked renovation method based on gradient principle |
Non-Patent Citations (2)
| Title |
|---|
| 聂锐华等: "非均匀沙卵石推移质输移随机特性研究", 《水利学报》 * |
| 魏丽等: "长江上游寸滩站卵石推移质输沙规律研究", 《人民长江》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110728019A (en) * | 2019-09-05 | 2020-01-24 | 四川大学 | Method for identifying disaster-prone area of wide and narrow river section mountain flood inundation disasters based on mountain area river form and flood level change |
| CN114061902A (en) * | 2021-11-29 | 2022-02-18 | 重庆交通大学 | Real-time monitoring device, method and system for egg and gravel transportation based on image method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104897874B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kakinuma et al. | Large-scale experiment and numerical modeling of a riverine levee breach | |
| Ali et al. | Minimizing downstream scour due to submerged hydraulic jump using corrugated aprons | |
| CN102943450B (en) | Method for measuring maximum scour depth of viscous debris flow gully bed and application thereof | |
| Keshavarzi et al. | Experimental study of flow structure around two in-line bridge piers | |
| CN104631378B (en) | Viscous debris flow rectangular drainage groove depth measuring and calculating method and application | |
| Nagata et al. | Development of a meandering channel caused by the planform shape of the river bank | |
| CN106202771B (en) | A kind of viscous mud-flow blocks up river calculation method and its application | |
| Schalko | Wood retention at inclined racks: Effects on flow and local bedload processes | |
| CN109766513A (en) | A kind of measuring method of mud-rock flow mean velocity in section | |
| CN104897874A (en) | Method for detecting correlation between mountain river pebble beaches | |
| Palermo et al. | Effect of unsteady flow conditions on scour features at low-head hydraulic structures | |
| Abbaspour et al. | Effect of buried plates on scour profiles downstream of hydraulic jump in open channels with horizontal and reverse bed slopes | |
| Azinfar | Flow resistance and associated backwater effect due to spur dikes in open channels | |
| CN108827871B (en) | Method for determining shear stress of sediment surface in tubular sediment erosion test device | |
| CN104596735B (en) | Optimal arrangement method of bridge group | |
| Follett et al. | Bedload sediment transport induced by channel-spanning instream structures | |
| Kabir et al. | Contribution of debris and substructures to hydrodynamic forces on bridges | |
| Williams | Scale effects on design estimation of scour depths at piers | |
| Elsaeed et al. | Bridge pier scour evaluation in meandering channels | |
| Rahman et al. | Impact assessment of Khan Jahan Ali bridge on Rupsha river | |
| Li | Pier streamlining as a bridge local Scour Countermeasure and The Underlying Scour Mechanism | |
| Tabata et al. | Hydraulic analysis of sediment transportation in Yamada weir located in Chikugo river, Japan | |
| Patsinghasanee et al. | Experimental Investigations on Cantilever Failures for Cohesive Riverbanks | |
| Jalali | Prediction of clear water local scour at bridge piers | |
| Haghighi et al. | Experimental study of sand sediments effects on submerged hydraulic jump properties |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170519 |