CN103675335A - Instantaneous velocity and sediment concentration field synchronous observation system - Google Patents
Instantaneous velocity and sediment concentration field synchronous observation system Download PDFInfo
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- CN103675335A CN103675335A CN201310637889.XA CN201310637889A CN103675335A CN 103675335 A CN103675335 A CN 103675335A CN 201310637889 A CN201310637889 A CN 201310637889A CN 103675335 A CN103675335 A CN 103675335A
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- 239000013049 sediment Substances 0.000 title abstract description 10
- 230000001360 synchronised effect Effects 0.000 title abstract 3
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 25
- 238000002379 ultrasonic velocimetry Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract 6
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Abstract
本发明公开了一种瞬时流速和含沙量现场同步观测系统，该系统包括测量架、测量杆、声学多普勒流速仪、悬沙取样器、床沙取样器。该系统在测量船上固定一个测量架，测量架下端连接一个测量杆，声学多普勒流速仪由流速仪固定装置固定安装在测量杆下端部位，在测量杆最下端安装一个床沙取样器。本发明提供的瞬时流速和含沙量现场同步观测系统，通过对多普勒流速仪、悬沙取样器、床沙取样器和测量架等主要构件的合理布置利用，有效避免了现场操作的可控性以及测量仪器等对测量的同步性的限制，实现了瞬时流速和含沙量的同步观测，效果良好。
The invention discloses an on-the-spot synchronous observation system of instantaneous flow velocity and sand content, which comprises a measuring frame, a measuring rod, an acoustic Doppler current meter, a suspended sand sampler, and a bed sand sampler. In this system, a measuring frame is fixed on the measuring ship, and a measuring rod is connected to the lower end of the measuring frame. The acoustic Doppler current meter is fixed and installed at the lower end of the measuring rod by the current meter fixing device, and a bed sand sampler is installed at the bottom end of the measuring rod. The on-site synchronous observation system of instantaneous flow velocity and sediment concentration provided by the present invention effectively avoids the possibility of on-site operation by rationally arranging and utilizing the main components such as the Doppler flow velocity meter, the suspended sand sampler, the bed sand sampler and the measuring frame. The simultaneous observation of instantaneous flow velocity and sediment concentration has been realized, and the effect is good.
Description
Technical field
The invention belongs to Sediment Siltation observation field, relate in particular to the on-the-spot simultaneous observation system of a kind of instantaneous velocity and silt content.
Background technology
At present reservoir sediment accumulation there is basic theories and the rule of directive significance, the mainly a large amount of basic research based on doing on the reservoirs such as government office, the Sanmenxia Gorge, Liujia Gorge, Qingtongxia, three Sheng Gong.Because flow turbulence and the depth of water, Reynolds number are closely related, for the international and domestic basic theories about sediment bypassing and method, whether be applicable to the defeated of fine sediment under the large depth condition of reservoir and move, not clear at present.After reservoir deposits, not only can affect significantly the performance of its benefit, also can have a strong impact on navigation property and channel safe.So, large and the thin feature of shoal materials particle for the reservoir depth of water, adopt fieldwork in different water levels, different flow situation, instantaneous velocity and silt content are studied, to provide fundamental basis to reservoir sediment accumulation forecast, significant to the application of the engineerings such as the plan for flood control of this class reservoir, operational management and Waterway Regulation.Suspended load in Open Channels is problem comparatively classical but still that do not solve completely in sediment movement mechanics, Sediment Siltation after domestic a lot of unit all once utilized mathematics physics model to Impoundment of Three Gorges Reservoir is simulated, but according to prototype measurement initial analysis, the overall siltation volume of simulation all coincide better, in alluvial form, greatly differs from each other with actual conditions.
But, being subject to the restriction of the controllability of execute-in-place and surveying instrument etc., the difficulty of implementing in-site measurement is larger, and at present domestic also do not have instantaneous velocity that maturation is applied to and a simultaneous observation system of silt content.
Summary of the invention
The object of the present invention is to provide the on-the-spot simultaneous observation system of a kind of instantaneous velocity and silt content, be intended to solve the restriction that the instantaneous velocity of current domestic reservoir and the simultaneous observation of silt content are subject to the controllability of execute-in-place and surveying instrument etc., implement the larger problem of difficulty of in-site measurement.
The present invention is achieved in that a kind of instantaneous velocity and the on-the-spot simultaneous observation system of silt content, mainly comprises measurement bay, sounding rod, acoustic Doppler velocimetry, outstanding husky sampler.This system is fixed a measurement bay on amount ship, and measurement bay lower end connects a sounding rod, and acoustic Doppler velocimetry is fixedly mounted on sounding rod lower end part by current meter stationary installation.
Further, the acoustic Doppler velocimetry that this system adopts adopts " prestige dragon " Vector (production of Nortek company);
Further, the outstanding husky sampler sampler that this system adopts is comprised of water pump, outstanding husky sampler and stationary installation.In order not affect the measurement water body of acoustic Doppler velocimetry, outstanding husky sampler sample position is fixed on the rear of measuring water body, and it is determined apart from need experiment;
Further, the measurement bay that this system adopts is mainly comprised of jacking gear, measurement rope, current meter stationary installation;
Further, during for the large bathymetric survey in field, also need on surveying vessel, configure jacking system, acoustic Doppler Flow speed measurer is played to fixing and oscilaltion effect.
The on-the-spot simultaneous observation system of instantaneous velocity provided by the invention and silt content, by the reasonable Arrangement of the main members such as doppler velocimeter, outstanding husky sampler and measurement bay is utilized, effectively avoided the restriction to the synchronism of measuring such as the controllability of execute-in-place and surveying instrument, realized the simultaneous observation of instantaneous velocity and silt content, respond well.
Accompanying drawing explanation
Fig. 1 is instantaneous velocity provided by the invention and the on-the-spot simultaneous observation system architecture of silt content schematic diagram;
Fig. 2 is sounding rod, the acoustic Doppler velocimetry of the on-the-spot simultaneous observation system of instantaneous velocity provided by the invention and silt content, the structural representation of outstanding husky sampler.
In figure: 1, measurement bay; 2, sounding rod; 3, acoustic Doppler velocimetry; 4, outstanding husky sampler.
Fig. 3 is that on-site sampling actual measurement silt content and formula calculate silt content relativity figure.
Fig. 4 is that instantaneous velocity and silt content are related to schematic diagram.
Embodiment
As shown in Figure 1, the present invention is achieved in that a kind of instantaneous velocity and the on-the-spot simultaneous observation system of silt content mainly comprise measurement bay 1, sounding rod 2, acoustic Doppler velocimetry 3, outstanding husky sampler 4.This system is fixed a measurement bay 1 on surveying vessel, and measurement bay 1 lower end connects a sounding rod 2, and acoustic Doppler velocimetry 3 is fixedly mounted on sounding rod 2 lower end parts by current meter stationary installation.
Further, the acoustic Doppler velocimetry 3 that this system adopts adopts " prestige dragon " Vector (production of Nortek company);
Further, the outstanding husky sampler sampler that this system adopts is comprised of water pump, outstanding husky sampler 5 and stationary installation.In order not affect the measurement water body of acoustic Doppler velocimetry 3, outstanding husky sampler 5 sample position are fixed on the rear of measuring water body, and it is determined apart from need experiment;
Further, the measurement bay 1 that this system adopts is comprised of jacking gear, measurement rope, current meter stationary installation;
Further, during for the large bathymetric survey in field, also need on surveying vessel, configure jacking system, acoustic Doppler Flow speed measurer 3 is played to fixing and oscilaltion effect.
As shown in Figure 1, the on-the-spot simultaneous observation system of a kind of instantaneous velocity and silt content, by sounding rod 2 liftings, Doppler's acoustics current meter 3 is sent into deepwater regions to be measured, adopt suction pipe sampling method to sample with period inter-sync waters to be measured water body, after demarcating by the definite time equal silt content of outstanding husky sampler sampling method, through the mathematics conversion between intensity of acoustic wave and silt content, calculate, can realize the on-the-spot simultaneous observation of instantaneous velocity and silt content.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. the on-the-spot simultaneous observation system of instantaneous velocity and silt content, is characterized in that, this system comprises measurement bay, sounding rod, acoustic Doppler velocimetry, outstanding husky sampler;
On surveying vessel, fix a measurement bay, measurement bay lower end connects a sounding rod, and acoustic Doppler velocimetry is fixedly mounted on sounding rod lower end part by current meter stationary installation, at sounding rod, a bed material sampler is installed bottom.
2. the on-the-spot simultaneous observation system of instantaneous velocity as claimed in claim 1 and silt content, is characterized in that, the acoustic Doppler velocimetry that this system adopts adopts the prestige dragon Vector with wireless water-proof function.
3. the on-the-spot simultaneous observation system of instantaneous velocity as claimed in claim 1 and silt content, it is characterized in that, outstanding husky sampler sampler in this system is comprised of water pump, outstanding husky sampler and stationary installation, and outstanding husky sampler sample position is fixed on the rear of measuring water body.
4. the on-the-spot simultaneous observation system of instantaneous velocity as claimed in claim 1 and silt content, is characterized in that, the measurement bay in this system is mainly comprised of jacking gear, measurement rope, current meter stationary installation.
5. the on-the-spot simultaneous observation system of instantaneous velocity as claimed in claim 1 and silt content, is characterized in that, during for the large bathymetric survey in field, also need on surveying vessel, configure jacking system, and acoustic Doppler Flow speed measurer is played to fixing and oscilaltion effect.
6. the on-the-spot simultaneous observation system of instantaneous velocity as claimed in claim 1 and silt content, it is characterized in that, the measurement of instantaneous velocity can be realized by acoustic Doppler velocimetry, the relation that the measurement of instantaneous silt content is demarcated itself and the sound intensity by outstanding husky sampling is measured, the relational expression of sound intensity BSI and silt content S:
logBSI=k×logS+b (1)
In formula, slope k=0.16D50+0.04, intercept b=0.06D50+0.81, D50 is median particle diameter (μ m), is applicable to silt content S<0.9kg/m3.K=0.1D50+1.7, intercept b=0.04D50+0.7, D50 is the same, is applicable to silt content S >=0.9kg/m3.
According to calibration formula (1), can obtain the instantaneous velocity of synchro measure and the relation of silt content.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569483A (en) * | 2015-01-16 | 2015-04-29 | 北京瑞科视讯科技有限公司 | Ultrasonic sensor for measuring silt concentration and three-dimensional instant flow rate at the same time |
| CN110375951A (en) * | 2019-06-28 | 2019-10-25 | 浙江大学 | The device and method of concentration and velocity profile can be measured in a kind of experiment of turbidity current simultaneously |
| CN111665371A (en) * | 2019-03-05 | 2020-09-15 | 上海宏昇仪器仪表技术有限公司 | Controllable lifting side-mounted Doppler current meter system and control method thereof |
| CN112729433A (en) * | 2020-12-28 | 2021-04-30 | 长江水利委员会水文局 | River flow and sand transportation field real-time synchronous monitoring method integrated with pressure sensing |
| CN113376067A (en) * | 2021-06-08 | 2021-09-10 | 水利部水土保持监测中心 | Portable automatic multi-level open channel sediment measuring device and method |
| CN113432929A (en) * | 2021-07-19 | 2021-09-24 | 内蒙古农业大学 | Novel sandy river suspended load stratified sampling ware |
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| WO1999036762A1 (en) * | 1998-01-15 | 1999-07-22 | Leiv Eriksson Nyfotek As | Method and means for measuring velocity and concentration of particles in a fluidized bed |
| CN1474186A (en) * | 2003-05-23 | 2004-02-11 | 水利部国家环境保护局黄河流域水资源 | Water sample pre-treatment system for automactically monitoring sandy river water quality |
| CN101533035A (en) * | 2009-04-02 | 2009-09-16 | 华东师范大学 | Method for observing estuary seacoast near-bottom water and sediment under high turbidity environment |
| CN103353408A (en) * | 2013-06-25 | 2013-10-16 | 北京林业大学 | Automatic monitor for suspended load sediments in river water |
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2013
- 2013-12-02 CN CN201310637889.XA patent/CN103675335A/en active Pending
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569483A (en) * | 2015-01-16 | 2015-04-29 | 北京瑞科视讯科技有限公司 | Ultrasonic sensor for measuring silt concentration and three-dimensional instant flow rate at the same time |
| CN111665371A (en) * | 2019-03-05 | 2020-09-15 | 上海宏昇仪器仪表技术有限公司 | Controllable lifting side-mounted Doppler current meter system and control method thereof |
| CN110375951A (en) * | 2019-06-28 | 2019-10-25 | 浙江大学 | The device and method of concentration and velocity profile can be measured in a kind of experiment of turbidity current simultaneously |
| CN112729433A (en) * | 2020-12-28 | 2021-04-30 | 长江水利委员会水文局 | River flow and sand transportation field real-time synchronous monitoring method integrated with pressure sensing |
| CN112729433B (en) * | 2020-12-28 | 2022-05-27 | 长江水利委员会水文局 | On-site real-time synchronous monitoring method of river flow and sediment transport with integrated pressure sensing |
| CN113376067A (en) * | 2021-06-08 | 2021-09-10 | 水利部水土保持监测中心 | Portable automatic multi-level open channel sediment measuring device and method |
| CN113432929A (en) * | 2021-07-19 | 2021-09-24 | 内蒙古农业大学 | Novel sandy river suspended load stratified sampling ware |
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Application publication date: 20140326 |