CN216116011U

CN216116011U - Sand content observation equipment under strong tidal bore condition

Info

Publication number: CN216116011U
Application number: CN202122503900.6U
Authority: CN
Inventors: 江波; 谢东风; 林楠; 孟凡祥; 李最森; 段文义; 凌佳; 贠鹏; 管宏业; 刘毅; 许烨璋; 朱彬峰
Original assignee: Zhejiang Institute of Hydraulics and Estuary
Current assignee: Zhejiang Institute of Hydraulics and Estuary
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-22
Anticipated expiration: 2031-10-18

Abstract

The application discloses sand content observation equipment under strong tidal bore condition. The device can avoid a risk area to observe multiple stations and any area, reduces the testing cost, and is convenient for extraction of collected data and maintenance of instruments. The observation platform comprises an observation platform, wherein two ends of the observation platform are respectively provided with an anchor hook for fixing, the anchor hooks are fixedly connected to the observation platform through anchor ropes, and the planes of the two anchor hooks are consistent with the direction of the flood tide or the tide.

Description

Sand content observation equipment under strong tidal bore condition

Technical Field

The utility model relates to the technical field of engineering detection, in particular to sand content observation equipment under a strong tidal bore condition.

Background

The estuary and coastal areas have high urbanization degree, the population is the most dense, the economy is developed, and the importance of regional scientific research work is more prominent. The sand content of the water body is important basic data for mastering the hydrological characteristics of the estuary and coastal environment and developing basic theoretical research and engineering practical application.

The water flow movement under the estuary and coast environment is influenced by the fluctuation of tide, belongs to bidirectional water flow and is different from the unidirectional water flow characteristic under the river condition. Particularly, the river mouth with tidal bore has strong power, the water level and the flow velocity have sudden changes when the tidal bore reaches, for example, the water level can rise steeply for more than 2m within a few minutes when the tidal bore of Qiantangjiang river reaches, the water flow direction is changed from falling tide to rising tide, and the severe scouring and silting change of the river bed is caused. The water and sand movement characteristics under the tidal bore condition bring great difficulty to the field observation of sand content, and especially the strong power of tidal bore brings great potential safety hazard to the safety of field manual observation. The development is suitable for observing the sand content under the action of tidal bore, and the device is used for tracking the terrain transition of estuaries and rivers and the movement change of water and sand, adjusting the mode and the strength of human activities in time, supporting the disaster prevention and reduction of two banks, water conservancy management and resource development and utilization services, and providing important basic data support for future gulf treatment and development.

In the past, OBS sand content observation only observes data of a surface layer (0.5 m water depth below a water surface), the data of the surface layer is greatly influenced by an external environment and cannot completely reflect the real change of an observation vertical line and the characteristic situation of the sand content of a drainage basin, the sand content of a middle layer and the sand content of the vertical line have a good corresponding relation, and the sand content characteristic near the middle layer of the relative water depth needs to be observed in order to meet the research and practical engineering demonstration requirements of river mouth hydrological characteristics.

The traditional scheme of the foundation construction measuring pile can be realized in other inland river water areas, but is difficult to realize at the strong tidal bore river mouth, and the construction cost and the maintenance cost are high; in addition, due to the large tidal bore flow velocity and strong impact force, the sampling is carried out manually by long-term ship berthing, which is unsafe and brings serious threat to the life safety of field observers.

For example, 1, traditional manual water sampling method: the Qiantangjiang river has fast flow velocity, and the sampler can not be completely put down, namely can float along with the water flow after being put into the water body, so that the sand content data can not be obtained. 2. Manual sampling is carried out in a ship mooring mode, long-time continuous observation cannot be guaranteed, personnel need to be changed, ships need to be supplied, sinking and side turning of the ships are easy to happen during a heavy tide, and safety production accidents occur; 3. the operation mode of directly fixing the measuring instrument at the bottom of the observation platform can cause the instrument to drag at the bottom during the low tide due to the large tide difference (the tide difference can reach more than 8 meters during the astronomical high tide), and only surface layer data can be measured during the high tide, and intermediate layer data cannot be observed. 4. The method for pouring the fixing piles by using the engineering ship for construction has the advantages that the construction cost is high, the Qiantangjiang river bed moves fast, the river bed is easy to scour and silt, the scouring range can reach more than 5 meters within several months, the stability of the fixing piles cannot be guaranteed, and meanwhile, the method is not suitable for observing the sand content of a plurality of stations in a large range.

Therefore, it is necessary to develop a sand content observation device under the strong tidal bore condition to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide sand content observation equipment under the strong tidal bore condition, which can avoid a risk area to observe multiple stations and any area, reduce the measurement cost, and facilitate the extraction of collected data and the maintenance of instruments, so as to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a sand content observation equipment under strong tidal bore condition, is including showy observation platform, observation platform's both ends are equipped with the fluke that is used for fixing respectively, the fluke passes through hawser fixed connection on observation platform, and the plane that two flukes were located keeps unanimous with the direction of rising tide or falling tide.

As a further scheme of the utility model: and a positioner for positioning is arranged on the observation platform.

As a further scheme of the utility model: and the observation platform is provided with a flow measuring device for measuring the flow velocity.

As a further scheme of the utility model: and a turbidity meter for measuring the turbidity of the tidal water is arranged on the anchor rope between the observation platform and the anchor hook.

As a further scheme of the utility model: the turbidity meter is arranged on an anchor rope between the observation platform and the anchor hook through a fixed sleeve.

As a further scheme of the utility model: the orientation of the observation probe of the turbidimeter is parallel to the anchor line.

As a further scheme of the utility model: the two ends of the fixing sleeve are respectively provided with a movable lock catch, and the movable lock catches are tied to the anchor ropes.

Compared with the prior art, the utility model has the beneficial effects that: the observation platform is fixed in an observation water area through double anchor hooks in a throwing mode, and the planes of the two anchor hooks are consistent with the direction of the flood tide or the falling tide. According to the actual water depth, one anchor rope is respectively adopted for fixing the turbidimeter in the rising anchor rope and the falling anchor rope. And (3) carrying out turbidity and sand content ratio measurement indoors through a field water sample, and establishing a turbid sand relation so as to determine a sand content value of the measuring point.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the utility model and the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an observation apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of an installation of a turbidity meter in an embodiment of the present invention;

FIG. 3 is a diagram illustrating the effect of the flood tide condition in accordance with an embodiment of the present invention;

fig. 4 is a diagram illustrating an effect of the embodiment of the present invention in a falling tide state.

The figures are numbered: river surface 1, river bottom 2, observation platform 3, locator 31, current surveying device 32, fluke 33, hawser 35, turbidity appearance 331, fixed sleeve 3313, observation probe 3311, activity hasp 3312.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment of the utility model, the sand content observation equipment under the strong tidal bore condition is shown in the figures 1-2 and comprises a floating observation platform 3, wherein two ends of the observation platform 3 are respectively provided with an anchor hook 33 for fixing, the anchor hooks 33 are fixedly connected to the observation platform 3 through anchor ropes 35, and the planes of the two anchor hooks 33 are consistent with the direction of the flood tide or the falling tide.

In this embodiment, the observation platform 3 floats on the river surface 1, the anchor hook 33 sinks on the river bottom 2, and the locator 31 for positioning is arranged on the observation platform 3. And a flow measuring device 32 for measuring the flow velocity is arranged on the observation platform 3.

In this embodiment, a turbidity meter 331 for measuring the turbidity of the tidal water is provided on the mooring line 35 between the observation platform 3 and the mooring hook 33. The turbidity meter 331 is mounted on the mooring line 35 between the observation platform 3 and the mooring hook 33 by means of a fixing sleeve 3313. The observation probe 3311 of the turbidity meter 331 is oriented parallel to the mooring line 35. The two ends of the fixed sleeve 3313 are both provided with movable buckles 3312, and the movable buckles 3312 are bound on the anchor rope 35.

In this embodiment, the estuary tide is constrained by the shore line, and the motion characteristic of the reciprocating current is presented, as shown in fig. 3, in the case of the anchor rope 35 in the flood state, the anchor rope 35 at the flood end is in a tightened state during this time, the turbidity meter 331 at the flood anchor rope is located at the middle position of the anchor rope 35, the data collected by the turbidity meter 331 is also the sand content data near the middle of the relative water depth, while the anchor rope 35 at the water fall end is in a loose state, and the turbidity meter 331 is dragged and sunk above the river bottom, so the data collected by the turbidity meter 331 on the anchor rope 35 at the water fall end during this time is not usable.

Referring to fig. 4, namely, in a falling tide state, the anchor rope 35 at the falling end is in a tight state, the turbidity meter 331 at the anchor rope 35 at the falling end is located in the middle of the anchor rope 35, the data collected by the turbidity meter 331 is also the data of the sand content near the middle of the relative water depth, the anchor rope 35 at the rising end is in a loose state, and the turbidity meter 331 is dragged and sunk above the bottom of the river, so that the data collected by the turbidity meter 331 on the anchor rope 35 at the rising end is unavailable.

After data collection, the fluctuation tide time period is judged according to the tide flow direction collected by the flow measuring device 32 arranged at the bottom of the platform, so that the data collected by the appropriate turbidimeter 331 can be accurately screened out.

In this embodiment, the observation platform 3 is fixed in the observation water area by throwing the double anchor hooks 33 of the flood tide, and a fixing sleeve 3313 is fixed to each of the two anchor lines according to the actual water depth, and a turbidity meter 331(OBS-3A) is installed thereon. The turbidity and sand content are compared indoors through the field water sample, and a turbid sand relation is established, so that the sand content value of the measuring point is determined, and therefore, the turbidity meter 331 needs to be free of obstruction in field work. The movable lock 3312 is respectively arranged on the upper and lower edges of the fixing sleeve 3313, so as to be conveniently fixed on the anchor rope 35, and the installation position can be adjusted according to the water depth condition, thereby avoiding the situation that the fixing sleeve 3313 is wound or the observation probe 3311 of the turbidity meter 331 is turned inwards along with the twisting of the anchor rope 35 in the actual measurement.

The sand content observation device in the embodiment solves the observation problem of long-term observation of sand content of the representative layer (middle layer) with the change of the sand content of the vertical line in the tidal bore water area, more accurately observes relevant data, improves data quality, reduces safety risk and limitation of manual field sampling, and avoids high cost brought by infrastructure observation piles. By way of example, the data compliance rates all exhibit a high level.

The sand content observation equipment under the strong tidal bore condition can avoid a risk area to observe multiple stations and any area, reduce the measurement cost, facilitate the extraction of collected data and the maintenance of instruments, and has high reliability.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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

1. The utility model provides a sand content observation equipment under strong tidal bore condition which characterized in that, is including showy observation platform, observation platform's both ends are equipped with the fluke that is used for fixing respectively, the fluke passes through hawser fixed connection on observation platform, and the plane that two flukes were located keeps unanimous with the direction of rising tide or falling tide.

2. The apparatus of claim 1, wherein the observation platform is provided with a locator for positioning.

3. The apparatus of claim 1, wherein the observation platform is provided with a flow measuring device for measuring the flow velocity.

4. A sand content observing apparatus under heavy tidal bore conditions according to any one of claims 1 to 3, wherein a turbidity meter for measuring the turbidity of tidal water is provided on the mooring line between the observation platform and the fluke.

5. The apparatus of claim 4, wherein the turbidity meter is mounted on the mooring line between the observation platform and the anchor hook via a fixing sleeve.

6. The sand content observation apparatus in heavy tidal bore according to claim 5, wherein the observation probe of the turbidity meter is oriented parallel to the anchor line.

7. The sand content observation apparatus under strong tidal bore condition according to claim 5, wherein both ends of the fixed sleeve are provided with movable lock catches, and the movable lock catches are tied to the anchor rope.