CN113552027A - Rapid test method for sailing suspended load sediment - Google Patents
Rapid test method for sailing suspended load sediment Download PDFInfo
- Publication number
- CN113552027A CN113552027A CN202110854171.0A CN202110854171A CN113552027A CN 113552027 A CN113552027 A CN 113552027A CN 202110854171 A CN202110854171 A CN 202110854171A CN 113552027 A CN113552027 A CN 113552027A
- Authority
- CN
- China
- Prior art keywords
- sediment
- test
- section
- induction value
- silt
- 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.)
- Pending
Links
- 239000013049 sediment Substances 0.000 title claims abstract description 75
- 238000010998 test method Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 73
- 230000006698 induction Effects 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000012935 Averaging Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 239000000725 suspension Substances 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010561 standard procedure Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention provides a rapid test method for a sailing suspended load sediment, which comprises the following steps: placing a sediment monitoring sensor at a certain depth below the water surface, conveying the sediment monitoring sensor from one bank to the other bank at a constant speed along a test section, measuring to obtain a measured sediment induction value, returning from the other bank, measuring to obtain a measured return sediment induction value, averaging the measured return sediment induction value and the measured return sediment induction value to obtain a measured sub sediment induction value, and converting the induction values into sand content through a sediment conversion model, namely the average sand content of the section; the method for rapidly testing the suspended sediment of the river is reasonable in design, the suspended sediment test is completed in a sailing type test mode, the operation is convenient and fast, the workload is small, the timeliness is good, the precision is reliable, the test cost is low, the operation safety is high, the problems that the traditional manual test is long in duration, poor in timeliness, poor in on-line monitoring representativeness, poor in precision and the like can be solved, and the method for rapidly testing the suspended sediment of the river is high in precision.
Description
Technical Field
The invention belongs to the technical field of testing of suspended sediment in water body, and particularly relates to a sailing type rapid testing method of suspended sediment.
Background
The traditional suspended load sediment test method in hydrological test comprises the following steps: a plurality of sampling vertical lines are arranged on a test section, a plurality of measuring points are arranged on each test vertical line, a suspended load sediment sampler is used for sampling in a test field, and 2-6 hours are consumed in one-time sampling process. After sampling, the steps of precipitation, concentration and the like are needed, the sand weight is measured in an analysis chamber by adopting methods such as a drying method and the like, and the suspended load sediment content is calculated. In particular, when sampling is performed during a period of flood, the testing time is easily missed, and a certain safety risk exists. In addition, the sediment content measured by the drying method needs to be precipitated for 7 days and dried for 8 hours, and the steps are complicated and the timeliness is poor.
At present, the online sand measuring instrument has more types and is widely applied to acoustics and optics, but can rarely meet the requirement of hydrological test precision. The online sand measuring instrument is mainly installed at a certain position or positions below the water surface at fixed points, so that the content of the silt at a certain point or points on the cross section can be measured only, and the content of the silt on the whole cross section cannot be represented accurately. The fixed-point installation is limited by installation conditions, and the capital construction cost of fixed-point installation is high; the device is easy to be attached by aquatic organisms, and the dredging operation is required to be frequently carried out during actual use; the flood is easy to be washed away during the flood period, and the navigation and the like can be influenced in partial areas, so that the safety risk exists.
In summary, it is very difficult to realize a fast, accurate and efficient test of suspended load silt under the prior art conditions, and therefore, the invention provides a navigation type fast test method of suspended load silt.
Disclosure of Invention
The invention provides a rapid test method for a sailing suspended load sediment, which is reasonable in design, completes suspended load sediment test by adopting a sailing test mode, is convenient to operate, small in workload, good in timeliness, reliable in precision, low in test cost and high in operation safety, can solve the problems of long duration, poor timeliness, poor on-line monitoring representativeness, low precision and the like of the traditional manual test, and provides a high-precision rapid test method for river suspended load sediment test.
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for rapidly testing a sailing suspended load sediment comprises the following specific steps:
the method comprises the following steps: fixing the sediment monitoring sensor on a test carrier through a suspension cable or a suspension rod, and extending into a certain depth below the water surface;
step two: setting the monitoring sensor into a rapid acquisition mode, starting measurement, uniformly conveying the sediment monitoring sensor to the other bank from one bank along a test section through a test carrier, recording bank identification, starting time and ending time, measuring through the sediment sensor to obtain a sediment induction value, and averaging acquired data to obtain a measured sediment induction value;
step three: returning the sediment monitoring sensor from the other bank along the test section through the test carrier, recording the bank identification, the starting time and the ending time, obtaining a sediment induction value through the sediment sensor, ending the measurement, and averaging the acquired data to obtain a return-measurement sediment induction value;
step four: the silt induction value is measured in a forward direction and the silt induction value is measured in a backward direction, the secondary silt induction value is obtained on average, if the relative error between the silt induction value measured in the forward direction and the sand induction value measured in the backward direction and the error of the average value is less than +/-10%, the average value of the forward direction and the backward direction is taken as the average silt induction value of the section, and if the relative error is more than +/-10%, the forward direction and the backward direction are repeated again;
step five: converting the average section silt induction value into the silt content according to a conversion model established by synchronously measuring the silt induction value of a large amount of water samples measured in a laboratory and the silt content measured by a national standard method, namely the average section silt content;
step six: and calculating to obtain the sand conveying rate of the section, and multiplying the average sand content of the section by the corresponding flow to obtain the sand conveying rate of the section.
As a preferred embodiment of the present invention, the sediment sensor includes various optical and acoustic sediment sensors, and has a function of rapid acquisition and storage or a function of long-duration acquisition and storage, and the instrument has a preheating requirement, and is preheated in advance according to a required time.
As a preferred embodiment of the present invention, the test vehicles include, but are not limited to, hydrographic vessels including, but not limited to, motor boats, unmanned boats, and floating boats, and hydrographic cableways.
In a preferred embodiment of the present invention, in the first step, the sediment monitoring sensor is fixed on the test carrier through a suspension cable or a suspension rod, and when the sediment monitoring sensor extends to a certain depth below the water surface, the sensor probe is ensured not to be exposed out of the water surface in the test process, and the distance from the river bottom is not less than the sensing range of the instrument.
In a preferred embodiment of the present invention, the test method is a transverse sailing test method along the hydrological test section.
As a preferred embodiment of the present invention, the corresponding flow in the sixth step is obtained by testing according to the requirements of the river suspended load sediment test specification, when an actual section flow method is adopted, the section flow observation time is consistent with the section average sand content observation time, and when a line push flow method is adopted, the section flow observation time is consistent with the section average sand content observation time.
The invention has the beneficial effects that:
the invention has reasonable design, completes the test of suspended sediment by adopting the walking test mode, has convenient operation, small workload, good timeliness, reliable precision, low test cost and high operation safety, can solve the problems of long duration, poor timeliness, poor on-line monitoring representativeness, low precision and the like of the traditional manual test, and provides a high-precision and rapid test method for the test of the suspended sediment of rivers.
Drawings
FIG. 1 is a flow chart of a method for rapidly testing air-borne suspended load silt.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the present invention provides a technical solution: a method for rapidly testing a sailing suspended load sediment comprises the following specific steps:
the method comprises the following steps: fixing the sediment monitoring sensor on a test carrier through a suspension cable or a suspension rod, and extending into a certain depth below the water surface;
step two: setting the monitoring sensor into a rapid acquisition mode, starting measurement, uniformly conveying the sediment monitoring sensor to the other bank from one bank along a test section through a test carrier, recording bank identification, starting time and ending time, measuring through the sediment sensor to obtain a sediment induction value, and averaging acquired data to obtain a measured sediment induction value;
step three: returning the sediment monitoring sensor from the other bank along the test section through the test carrier, recording the bank identification, the starting time and the ending time, obtaining a sediment induction value through the sediment sensor, ending the measurement, and averaging the acquired data to obtain a return-measurement sediment induction value;
step four: the silt induction value is measured in a forward direction and the silt induction value is measured in a backward direction, the secondary silt induction value is obtained on average, if the relative error between the silt induction value measured in the forward direction and the sand induction value measured in the backward direction and the error of the average value is less than +/-10%, the average value of the forward direction and the backward direction is taken as the average silt induction value of the section, and if the relative error is more than +/-10%, the forward direction and the backward direction are repeated again;
step five: converting the average section silt induction value into the silt content according to a conversion model established by synchronously measuring the silt induction value of a large amount of water samples measured in a laboratory and the silt content measured by a national standard method, namely the average section silt content;
step six: and calculating to obtain the sand conveying rate of the section, and multiplying the average sand content of the section by the corresponding flow to obtain the sand conveying rate of the section.
As a preferred embodiment of the present invention, the sediment sensor includes various optical and acoustic sediment sensors, and has a function of rapid acquisition and storage or a function of long-duration acquisition and storage, and the instrument has a preheating requirement, and is preheated in advance according to a required time.
As a preferred embodiment of the present invention, the test vehicles include, but are not limited to, hydrographic vessels including, but not limited to, motor boats, unmanned boats, and floating boats, and hydrographic cableways.
In a preferred embodiment of the present invention, in the first step, the sediment monitoring sensor is fixed on the test carrier through a suspension cable or a suspension rod, and when the sediment monitoring sensor extends to a certain depth below the water surface, the sensor probe is ensured not to be exposed out of the water surface in the test process, and the distance from the river bottom is not less than the sensing range of the instrument.
In a preferred embodiment of the present invention, the test method is a transverse sailing test method along the hydrological test section.
As a preferred embodiment of the present invention, the corresponding flow in the sixth step is obtained by testing according to the requirements of the river suspended load sediment test specification, when an actual section flow method is adopted, the section flow observation time is consistent with the section average sand content observation time, and when a line push flow method is adopted, the section flow observation time is consistent with the section average sand content observation time.
As a preferred embodiment of the invention, the invention adopts an air-navigation type test mode to finish suspended sediment test, has convenient operation, small workload, good timeliness, reliable precision, low test cost and high operation safety, can solve the problems of long duration, poor timeliness, poor on-line monitoring representativeness, low precision and the like of the traditional manual test, and provides a high-precision and rapid test method for river suspended sediment test.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A method for rapidly testing a sailing suspended load sediment is characterized by comprising the following specific steps:
the method comprises the following steps: fixing the sediment monitoring sensor on a test carrier through a suspension cable or a suspension rod, and extending into a certain depth below the water surface;
step two: setting the monitoring sensor into a rapid acquisition mode, starting measurement, uniformly conveying the sediment monitoring sensor to the other bank from one bank along a test section through a test carrier, recording bank identification, starting time and ending time, measuring through the sediment sensor to obtain a sediment induction value, and averaging acquired data to obtain a measured sediment induction value;
step three: returning the sediment monitoring sensor from the other bank along the test section through the test carrier, recording the bank identification, the starting time and the ending time, obtaining a sediment induction value through the sediment sensor, ending the measurement, and averaging the acquired data to obtain a return-measurement sediment induction value;
step four: the silt induction value is measured in a forward direction and the silt induction value is measured in a backward direction, the secondary silt induction value is obtained on average, if the relative error between the silt induction value measured in the forward direction and the sand induction value measured in the backward direction and the error of the average value is less than +/-10%, the average value of the forward direction and the backward direction is taken as the average silt induction value of the section, and if the relative error is more than +/-10%, the forward direction and the backward direction are repeated again;
step five: converting the average section silt induction value into the silt content according to a conversion model established by synchronously measuring the silt induction value of a large amount of water samples measured in a laboratory and the silt content measured by a national standard method, namely the average section silt content;
step six: and calculating to obtain the sand conveying rate of the section, and multiplying the average sand content of the section by the corresponding flow to obtain the sand conveying rate of the section.
2. The method for rapidly testing walkthrough suspended sediment according to claim 1, characterized in that: the silt sensor comprises various optical and acoustic silt sensors, has a quick acquisition and storage function or a long-duration acquisition and storage function, and is preheated according to the preheating requirement of the instrument.
3. The method for rapidly testing walkthrough suspended sediment according to claim 1, characterized in that: the test vehicles include, but are not limited to, hydrographic vessels including, but not limited to, motor boats, unmanned boats, and floating boats, and hydrographic cableways.
4. The method for rapidly testing walkthrough suspended sediment according to claim 1, characterized in that: in the first step, the sediment monitoring sensor is fixed on the test carrier through a suspension cable or a suspension rod, and when the sediment monitoring sensor extends to a certain depth below the water surface, the sensor probe is ensured not to be exposed out of the water surface in the test process, and the distance from the sensor probe to the river bottom is not smaller than the sensing range of the instrument.
5. The method for rapidly testing walkthrough suspended sediment according to claim 1, characterized in that: the test method is a transverse sailing test method along the hydrological test section.
6. The method for rapidly testing walkthrough suspended sediment according to claim 1, characterized in that: and testing the corresponding flow in the sixth step according to the requirements of the river suspended load sediment test specification, wherein the observation time of the section flow is consistent with the observation time of the average sand content of the section when an actual measurement section flow method is adopted, and the observation time of the section flow is consistent with the observation time of the average sand content of the section when a line push flow method is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110854171.0A CN113552027A (en) | 2021-07-28 | 2021-07-28 | Rapid test method for sailing suspended load sediment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110854171.0A CN113552027A (en) | 2021-07-28 | 2021-07-28 | Rapid test method for sailing suspended load sediment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113552027A true CN113552027A (en) | 2021-10-26 |
Family
ID=78133033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110854171.0A Pending CN113552027A (en) | 2021-07-28 | 2021-07-28 | Rapid test method for sailing suspended load sediment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113552027A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115372219A (en) * | 2022-10-24 | 2022-11-22 | 北京易科立德生态环境科技有限责任公司 | River channel sand content measuring device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825043A (en) * | 2016-03-10 | 2016-08-03 | 南宁市水文水资源局 | Method for building relation model between turbidity and single sand |
| CN206056580U (en) * | 2016-09-14 | 2017-03-29 | 广州拓泰环境监测技术有限公司 | A kind of hydrometric cableway surveys husky device automatically |
| CN111579011A (en) * | 2020-06-30 | 2020-08-25 | 长江水利委员会水文局 | Walking type ADCP river flow testing method suitable for ultralow flow speed condition |
| CN113049052A (en) * | 2021-03-25 | 2021-06-29 | 长江水利委员会水文局长江下游水文水资源勘测局(长江水利委员会水文局长江下游水环境监测中心) | Flow measuring method for river with large sand content |
-
2021
- 2021-07-28 CN CN202110854171.0A patent/CN113552027A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825043A (en) * | 2016-03-10 | 2016-08-03 | 南宁市水文水资源局 | Method for building relation model between turbidity and single sand |
| CN206056580U (en) * | 2016-09-14 | 2017-03-29 | 广州拓泰环境监测技术有限公司 | A kind of hydrometric cableway surveys husky device automatically |
| CN111579011A (en) * | 2020-06-30 | 2020-08-25 | 长江水利委员会水文局 | Walking type ADCP river flow testing method suitable for ultralow flow speed condition |
| CN113049052A (en) * | 2021-03-25 | 2021-06-29 | 长江水利委员会水文局长江下游水文水资源勘测局(长江水利委员会水文局长江下游水环境监测中心) | Flow measuring method for river with large sand content |
Non-Patent Citations (1)
| Title |
|---|
| 韦广龙 等: "自动化走航式全断面积宽法悬移质输沙率测验关键技术的研究", 《人民珠江》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115372219A (en) * | 2022-10-24 | 2022-11-22 | 北京易科立德生态环境科技有限责任公司 | River channel sand content measuring device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109613520B (en) | Ultra-short baseline installation error online calibration method based on filtering | |
| CN109061091A (en) | A method of estimation lake dissolved organic carbon concentration | |
| CN113552027A (en) | Rapid test method for sailing suspended load sediment | |
| CN111060427B (en) | Self-stabilizing high-precision sediment bed load measuring system and method | |
| CN105486487A (en) | Wave detection system | |
| CN102680279B (en) | Device and method for sampling water body buoy section | |
| CN102288646A (en) | Automatic in-situ monitoring method and system for vertical distribution of concentration of sediment in seawater | |
| CN112747950B (en) | Columnar sediment sampling system with in-situ data acquisition function | |
| CN202055155U (en) | Laser inertia high-speed pavement smoothness detection instrument | |
| CN103743659B (en) | Sediment concentration and flow fluctuation speed sync measuring system in low concentration muddy water | |
| CN109085142A (en) | A method of measurement water body in lake transparency | |
| CN102298072A (en) | High precision wind measuring device with micro-differential pressure type and method thereof | |
| Harvey et al. | Observations of shear in near-bed currents in the southern North Sea | |
| Lesht | Benthic boundary-layer velocity profiles: dependence on averaging period | |
| Riethmüller et al. | Measurement of optical light attenuation profiles in the Elbe estuary | |
| Sun | Electrochemical polarization technique based on the nonlinear region weak polarization curve fitting analysis | |
| CN108956497B (en) | Method for observing and correcting polar region dissolved oxygen | |
| CN113091878A (en) | Device for underwater sound velocity measurement and using method thereof | |
| CN202770666U (en) | Profile sampling device for water buoy | |
| US8047709B1 (en) | Method and system for interface detection | |
| CN108037052B (en) | Infrared optical automatic sand measuring device and method for hydrologic station | |
| CN116839753B (en) | Temperature calibration method of temperature depth chain | |
| CN101900661A (en) | Suspended sediment concentration calculating method of HY-1B satellite COCTS | |
| Dykman | Technical tools for studying structure and dynamics of water masses | |
| CN220438336U (en) | Sediment phosphorus release normal position survey device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211026 |