CN212674701U - In-situ test and micro-disturbance sampling device for measuring volume weights of silt returning substances at different depths in seabed foundation trench - Google Patents
In-situ test and micro-disturbance sampling device for measuring volume weights of silt returning substances at different depths in seabed foundation trench Download PDFInfo
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Abstract
The utility model discloses an in-situ test and micro-disturbance sampling device for measuring the volume weights of silt returning substances at different depths in a seabed foundation trench, which comprises a central upright post and a plurality of monitoring boxes distributed along different depths on the circumference of the central upright post; the monitoring box comprises a box body, a box cover, a weighing box bottom, a box cover upper support, a weighing box bottom lower support, a box cover driving hydraulic cylinder and a weighing box bottom driving hydraulic cylinder, wherein the box cover driving hydraulic cylinder is used for driving the box cover to transversely slide along the box cover upper support so as to realize the closing or opening of the box cover and the box body; the weighing box bottom driving hydraulic cylinder is used for driving the weighing box bottom to transversely slide along the weighing box bottom lower support so as to realize the closing or opening of the weighing box bottom and the box body; the whole device is placed in a seabed monitoring area, the box cover and the weighing box bottom are closed after the device is kept still for a period of time, the total weight of sludge returning objects in the monitoring box is measured, and the volume weight of the sludge returning objects in the monitoring box at each depth position is calculated according to the actual volume of the monitoring box; the whole device is fished out of the water surface under a closed condition to realize sampling.
Description
Technical Field
The utility model belongs to the technical field of the seabed returns silt thing detects and takes a sample, concretely relates to different degree of depth department returns normal position test and perturbation of silt thing unit weight and moves sampling device in survey seabed foundation ditch.
Background
The underwater foundation trench excavation is a very common construction form in offshore engineering, such as immersed tube tunnel engineering, submarine pipeline engineering and the like, which can not be excavated, but because the construction period of foundation trench excavation is long, silt-back sediment is inevitably generated in the foundation trench. The reason and conditions for the formation of the back-silted sediment have been known in a relatively consistent manner, namely that the fine-grained sediment, after being suspended, moves into the foundation trench along with the water flow and falls into the foundation trench. During the sedimentation process of the clay suspended sand, due to flocculation, the sediment particles form flocculated particles, the flocculated particles are gathered into a honeycomb-shaped high sand-containing floccule structure after reaching a certain concentration, a clear interface is formed between the structure and an upper layer water body, and when the concentration is high enough to change rheological characteristics, suspended matters are changed into sediments; or the silt on the surface layer of the seabed flows in the horizontal direction after being softened and then gathers together, or the silt is started under the action of heavy waves to form a high-sand-content water body, and then gathers into the foundation trench under the action of gravity to form the silt-back sediment. A large amount of back-silted sediment can seriously affect the construction quality of engineering, prolong the construction period and increase the construction cost, so the physical and mechanical properties of the back-silted sediment must be determined before construction, and data guarantee is provided for the smooth development of the engineering.
Engineering experience shows that the back-silted sediment deposited in the foundation trench consists of three parts, wherein the upper part is flow mud and floating mud with high water content, small particle size and small gravity, the middle part is silt with moderate water content, particle size and heavy gravity, and the lower part is mucky soil with large particles, large water content and large gravity. Corresponding definitions are given in soil body specifications of the three parts, for example, port engineering geological survey specification (JTJ 240-97) and port engineering foundation specification (JTJ250-98) divide muddy soil into 4 subclasses of muddy soil, silt, running mud and floating mud (as shown in Table 1), and water transportation engineering geotechnical survey specification (JTS133-2013) and water transportation engineering foundation design specification (JTS147-2017) divide muddy soil into 3 subclasses of muddy soil, silt and running mud (as shown in Table 2).
TABLE 1 Classification of mucky soils
TABLE 2 Classification of mucky soils
No matter how the silt soil is divided, the specification considers that the floating mud has no structural strength and adhesive force, no interlayer is formed on the riprap foundation bed, and the existence of the floating mud can be ignored. The industry standard takes the gravity, the porosity ratio and the water content as important indexes for measuring the influence of the silt returning matter on the engineering construction quality, wherein the gravity is the most common index, and therefore the gravity of the silt returning matter needs to be accurately measured before the engineering is carried out. A large number of engineering experiences show that: the silt returning materials in the seabed foundation tank have the characteristics that the gravity changes along with the depth constantly, the soil body characteristics are easy to disturb, and the like, so that how to accurately measure the gravity values of the silt returning materials at different depths on the premise of micro disturbance has important practical significance for practical engineering.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a different degree of depth department's return silt volume weight's normal position test and perturbation sampling device in survey seabed foundation ditch. Through the device can the different depth of depth department's of normal position survey seabed back-up thing volume weight, can close through the apron again, reach the purpose that carries out the perturbation sample to the back-up thing of the different depth department in seabed, and then acquire more physical mechanics index about back-up thing in the laboratory. The influence of the sludge-returning object on the ocean engineering construction is determined by determining the physical and mechanical indexes of the sludge-returning object, and data support is provided for the smooth implementation of the ocean engineering.
The utility model discloses a realize through following technical scheme:
an in-situ test and micro-disturbance sampling device for measuring the volume weight of silt returning substances at different depths in a seabed foundation trench comprises a central upright column and a plurality of monitoring boxes distributed along different depths on the circumference of the central upright column;
the monitoring box comprises a box body, a box cover, a weighing box bottom, a box cover upper support, a weighing box bottom lower support, a box cover driving hydraulic cylinder and a weighing box bottom driving hydraulic cylinder, wherein the side part of the box body is fixed on the outer wall of the central upright post, and the box body is provided with an opening through which the back silt generated in the base groove can pass through the box body in the deposition process; the box cover is transversely slidably mounted on the upper support of the box cover through a slide rail, and the weighing box bottom is transversely slidably mounted on the lower support of the weighing box bottom through a slide rail; the box cover driving hydraulic cylinder is used for driving the box cover to transversely slide along the upper support of the box cover so as to realize the closing or opening of the box cover and the box body; the weighing box bottom driving hydraulic cylinder is used for driving the weighing box bottom to transversely slide along the weighing box bottom lower support, so that the weighing box bottom and the box body are closed or opened;
the weighing box bottom comprises a box bottom shell, a weighing plate and a weighing sensor, wherein the box bottom shell is provided with a bottom surface and four side surfaces, the weighing plate is horizontally arranged at the position of the top surface in the box bottom shell, and the weighing sensor is arranged between the weighing plate and the bottom surface of the box bottom shell; the weighing plate is in clearance fit with the four side surfaces of the box bottom shell, and waterproof sealing films are arranged between the weighing plate and the four side surfaces of the box bottom shell;
the inner part of the central upright post is provided with an equipment installation cavity, the cylinder body of the box cover driving hydraulic cylinder and the cylinder body of the weighing box bottom driving hydraulic cylinder are both installed in the equipment installation cavity of the central upright post, the action rod of the box cover driving hydraulic cylinder is positioned outside the central upright post and connected with the box cover, and the action rod of the weighing box bottom driving hydraulic cylinder is positioned outside the central upright post and connected with the weighing box bottom; a hydraulic control system is arranged in the spare installation cavity of the central upright column and is used for controlling the box cover driving hydraulic cylinders and the weighing box bottom driving hydraulic cylinders to act; the data acquisition module is arranged in the mounting cavity of the central upright post, and is connected with the weighing sensors in the bottom of each weighing box through waterproof cables, so that data acquisition is realized.
In the technical scheme, the monitoring boxes are spirally distributed in ascending steps from bottom to top along the circumference of the central upright post.
In the technical scheme, the top of the central upright post is provided with the lifting rope for towing the whole device.
In the technical scheme, the base is arranged at the bottom of the central upright column and is made of a steel plate, and the base mainly plays a role in stabilizing the whole system.
In the technical scheme, the wall of the central upright post is provided with a mounting hole for mounting the cylinder body of the box cover driving hydraulic cylinder and the cylinder body of the weighing box bottom driving hydraulic cylinder, a waterproof seal is arranged between the cylinder body of the box cover driving hydraulic cylinder and the mounting hole, and a waterproof seal is arranged between the cylinder body of the weighing box bottom driving hydraulic cylinder and the mounting hole.
In the technical scheme, the number of the box cover upper supports is two, the two box cover upper supports are symmetrically and fixedly arranged at the upper parts of the left side and the right side of the box body, and the box cover upper supports are in a strip shape; the box cover is in a square plate shape, the width of the box cover is larger than that of the box body, the bottom of the left side and the bottom of the right side of the box cover are respectively provided with a sliding rail, and the box cover is slidably arranged on the box cover for supporting.
In the technical scheme, the number of the weighing box bottom lower supports is two, the two weighing box bottom lower supports are symmetrically and fixedly arranged at the lower parts of the left side and the right side of the box body, and the weighing box bottom lower supports are in a strip shape; the left side and the right side of the box bottom shell at the bottom of the weighing box are provided with flanges corresponding to the lower support at the bottom of the weighing box, slide rails are arranged on the flanges, and the flanges are slidably mounted on the lower support at the bottom of the weighing box through the slide rails, so that the slidable mounting of the whole weighing box bottom and the lower support at the bottom of the weighing box is realized.
In the above technical solution, the box cover driving hydraulic cylinder and the weighing box bottom driving hydraulic cylinder are disposed at a side portion of the box body, specifically, an outer end of an actuating rod of the box cover driving hydraulic cylinder is connected to an outer side portion of a top of the box cover, and an outer end of an actuating rod of the weighing box bottom driving hydraulic cylinder is connected to an outer wall of a box bottom housing of the weighing box bottom.
In the technical scheme, the hydraulic control system comprises a small hydraulic station, the hydraulic station is respectively connected with each box cover driving hydraulic cylinder and each weighing box bottom driving hydraulic cylinder through hydraulic pipelines, and each box cover driving hydraulic cylinder and each weighing box bottom driving hydraulic cylinder are respectively provided with an electromagnetic directional control valve so as to control each hydraulic cylinder to act.
In the technical scheme, through holes for threading are formed in the box bottom shell of the weighing box bottom and the wall of the central upright post, so that waterproof cables can pass through the through holes, and waterproof sealing is performed at the through holes.
In the technical scheme, a master controller is further arranged in the mounting cavity of the central upright column, and the master controller is connected with the hydraulic control system and the data acquisition module and used for carrying out master control on the hydraulic control system and the data acquisition module.
In the technical scheme, the master controller is connected with the remote wireless communication module on the sea surface through the waterproof cable leading-out center upright post, so that remote wireless communication with the monitoring terminal is realized.
The use method of the in-situ test and micro-disturbance sampling device for measuring the volume weight of the silt at different depths in the seabed foundation trench comprises the following steps:
the method comprises the following steps: placing the whole device in a seabed monitoring area, and standing for a period of time or meeting the construction standing time requirement;
step two: closing the box cover and the weighing box bottom of the monitoring box at the same time;
step three: measuring the total weight of the sludge returning objects in the monitoring box by using the weighing box bottom, and calculating the volume weight of the sludge returning objects in the monitoring box at each depth position according to the actual volume of the monitoring box;
step four: the whole device is fished out of the water surface under a closed condition, the silt returning object in the monitoring box is subjected to a basic physical mechanical index test in a laboratory, and the physical mechanical indexes such as the volume weight, the particle composition, the liquid plastic limit and the like of the silt returning object are further determined.
The utility model discloses an advantage and beneficial effect do:
the utility model discloses filled the blank about the accurate test of submarine sediment unit weight size among the ocean engineering, can effectively be applied to submarine immersed tube tunnel installation engineering, submarine pipeline installation engineering etc. can provide more reliable design parameter for the smooth installation in immersed tube tunnel. The utility model discloses an in situ monitoring means falls under the silt condition through the survey nature, returns the weight of silt thing under water to according to the volume of monitoring box, and then obtain the unit weight of silt thing back, effectively reduced the disturbance influence that the means of detection brought, more importantly, still can reach the purpose of no disturbance sample under water through the device. Under the cooperation of base, monitoring system and data acquisition system triplex, the utility model discloses can effectively survey the unit weight of the thing that becomes silted up under water.
Drawings
Fig. 1 is a schematic structural diagram of the in-situ testing and micro-disturbance sampling device of the present invention.
Fig. 2 is a schematic sectional view of the in-situ testing and micro-disturbance sampling device of the present invention (open state of the box cover and the weighing box bottom).
Fig. 3 is a schematic top view of the in-situ testing and micro-disturbance sampling device of the present invention.
Fig. 4 is a schematic sectional view of the in-situ testing and micro-disturbance sampling device of the present invention (the box cover and the weighing box bottom are closed).
Fig. 5 is a sectional view of the monitoring cassette of fig. 4 taken along the direction a.
Fig. 6 is a partially enlarged schematic view of fig. 5.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Example one
An in-situ testing and micro-disturbance sampling device for measuring the volume weights of silt returning substances at different depths in a seabed foundation trench comprises a central upright post 1 and a plurality of monitoring boxes 2 distributed along different depths on the circumference of the central upright post, wherein the monitoring boxes are further distributed in a spiral ascending ladder shape from bottom to top along the circumference of the central upright post, and the number of the monitoring boxes 2 is preferably 10-20.
The monitoring box 2 comprises a box body 2.1, a box cover 2.2, a weighing box bottom 2.3, a box cover upper support 2.4, a weighing box bottom lower support 2.5, a box cover driving hydraulic cylinder 2.6 and a weighing box bottom driving hydraulic cylinder 2.7, wherein the side part of the box body 2.1 is fixed on the outer wall of the central upright post 1 through a mounting bracket 2.11, the box body 2.1 is a square box body and is provided with four side surfaces, and the upper part and the lower part of the box body are provided with through openings, so that a sludge returning object generated in the base groove can pass through the box body in the deposition process; the box cover 2.2 is transversely slidably mounted on the box cover upper support 2.4 through a slide rail a, and the weighing box bottom 2.3 is transversely slidably mounted on the weighing box bottom lower support 2.5 through a slide rail; the box cover driving hydraulic cylinder 2.6 is used for driving the box cover 2.2 to transversely slide along the upper support 2.4 of the box cover so as to realize the closing or opening of the box cover and the box body; and the weighing box bottom driving hydraulic cylinder 2.7 is used for driving the weighing box bottom 2.3 to transversely slide along the weighing box bottom lower support 2.5, so that the weighing box bottom and the box body are closed or opened.
Furthermore, the number of the box cover upper supports 2.4 is two, the two box cover upper supports are symmetrically and fixedly arranged at the upper parts of the left side and the right side of the box body 2.1, the box cover upper supports 2.4 are in a strip shape, and the length of the box cover upper supports is 2-2.2 times of the length of the box body; the box cover 2.2 is in a square plate shape, the width of the box cover is larger than that of the box body, the bottom of the left side and the bottom of the right side of the box cover are respectively provided with a sliding rail a, and the sliding rails are slidably arranged on the box cover for supporting.
Further, the weighing box bottom 2.3 comprises a box bottom shell 2.31, a weighing plate 2.32 and a weighing sensor 2.33, wherein the box bottom shell is provided with a bottom surface and four side surfaces, the weighing plate 2.32 is horizontally arranged at the position of the top surface inside the box bottom shell 2.31, the weighing sensor 2.33 is arranged between the weighing plate and the bottom surface of the box bottom shell, the weighing sensor is preferably a cantilever beam type sensor, and the sensor is used for collecting the weight signal of an object on the weighing plate; further, be clearance fit between weighing plate 2.31 and the four sides of box end shell 2.31 to guarantee that weighing plate can move about, realize the function of weighing, and whole device during operation is under water, consequently, be provided with seal membrane m between weighing plate 2.32 and the four sides of box end shell 2.31, the seal membrane is the rubber material preferably, plays waterproof effect, prevents that water from entering into box end shell inner chamber.
Furthermore, the number of the weighing box bottom lower supports 2.5 is two, the two weighing box bottom lower supports are symmetrically and fixedly arranged at the lower parts of the left side and the right side of the box body, and the weighing box bottom lower supports are in a strip shape and the length of the weighing box bottom lower supports is 2-2.2 times of the length of the box body; the left side and the right side of the box bottom shell 2.31 of the weighing box bottom are provided with flanges 2.311 corresponding to the weighing box bottom lower support, slide rails a are arranged on the flanges, and the flanges are slidably mounted on the weighing box bottom lower support 2.5 through the slide rails, so that the sliding mounting of the whole weighing box bottom and the weighing box bottom lower support is realized.
The inside of the central upright post 1 is provided with an equipment installation cavity, the cylinder body of the box cover driving hydraulic cylinder and the cylinder body of the weighing box bottom driving hydraulic cylinder are both installed in the equipment installation cavity of the central upright post, the action rod of the box cover driving hydraulic cylinder is positioned outside the central upright post and connected with the box cover, and the action rod of the weighing box bottom driving hydraulic cylinder is positioned outside the central upright post and connected with the weighing box bottom; a hydraulic control system 4 is arranged in a spare installation cavity of the central upright column and is used for controlling the actions of each box cover driving hydraulic cylinder and each weighing box bottom driving hydraulic cylinder; a data acquisition module 5 is arranged in a mounting cavity of the central upright column, and the data acquisition module is connected with weighing sensors in the bottoms of the weighing boxes through waterproof cables (through holes for threading are formed in a box bottom shell of the weighing box bottom and the wall of the central upright column for the waterproof cables to pass through, and the through holes are sealed in a waterproof manner), so that data acquisition is realized; a master controller 6 is also arranged in the mounting cavity of the central upright post, and is connected with the hydraulic control system and the data acquisition module and used for master control of the hydraulic control system and the data acquisition module; furthermore, the master controller is connected with the remote wireless communication module on the sea surface through the waterproof cable leading-out center upright post, so that remote wireless communication with the monitoring terminal is realized.
Furthermore, mounting holes for mounting the cylinder body of the box cover driving hydraulic cylinder and the cylinder body of the weighing box bottom driving hydraulic cylinder are formed in the wall of the central upright column, waterproof sealing is arranged between the cylinder body of the box cover driving hydraulic cylinder and the mounting holes, and waterproof sealing is arranged between the cylinder body of the weighing box bottom driving hydraulic cylinder and the mounting holes.
Further, in order not to affect the deposition of the seabed silt into the box body, it is preferable that the box cover driving hydraulic cylinder and the weighing box bottom driving hydraulic cylinder are arranged on the side portion of the box body, specifically, the outer end of the actuating rod of the box cover driving hydraulic cylinder is connected to the outer side portion of the top of the box cover (the outer side portion of the top of the box cover is provided with a connecting seat 2.61 for connecting with the outer end of the actuating rod of the box cover driving hydraulic cylinder), and the outer end of the actuating rod of the weighing box bottom driving hydraulic cylinder is connected to the outer wall of the box bottom shell of the weighing box bottom (the outer wall of the box bottom shell is provided with a connecting seat 2.71 for connecting with the outer end of.
Furthermore, the top of the central upright post is provided with a lifting rope 1.1 for towing the whole device.
Example two
On the basis of the first embodiment, further, the bottom of the central upright is provided with a base 3, and the base is made of a steel plate and mainly plays a role in stabilizing the whole system.
EXAMPLE III
The use method of the in-situ testing and micro-disturbance sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench in the embodiment is as follows:
the method comprises the following steps: the whole device is placed in a seabed monitoring area and is kept stand for a period of time or meets the construction standing time requirement.
Step two: and closing the box cover and the weighing box bottom of the monitoring box at the same time.
Step three: and measuring the total weight of the sludge returning objects in the monitoring box by using the weighing box bottom, and calculating the volume weight of the sludge returning objects in the monitoring box at each depth position according to the actual volume of the monitoring box (the volume of the monitoring box is determined in advance). The calculation formula is as follows:
in the formula: gamma is the volume weight of the soil body in the monitoring box, kN/m3(ii) a M is the total weight of soil in the monitoring box, kN; v is the volume of the monitoring box when it is closed, m3。
Step four: the whole device is fished out of the water surface under a closed condition, the silt returning object in the monitoring box is subjected to a basic physical mechanical index test in a laboratory, and the physical mechanical indexes such as the volume weight, the particle composition, the liquid plastic limit and the like of the silt returning object are further determined.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (10)
1. The utility model provides an in situ test and perturbation sampling device of different degree of depth department return sludge volume weight in survey seabed foundation ditch which characterized in that: the monitoring device comprises a central upright post and a plurality of monitoring boxes distributed along different depths on the circumference of the central upright post;
the monitoring box comprises a box body, a box cover, a weighing box bottom, a box cover upper support, a weighing box bottom lower support, a box cover driving hydraulic cylinder and a weighing box bottom driving hydraulic cylinder, wherein the side part of the box body is fixed on the outer wall of the central upright post, and the box body is provided with an opening through which the back silt generated in the base groove can pass through the box body in the deposition process; the box cover is transversely slidably mounted on the upper support of the box cover through a slide rail, and the weighing box bottom is transversely slidably mounted on the lower support of the weighing box bottom through a slide rail; the box cover driving hydraulic cylinder is used for driving the box cover to transversely slide along the upper support of the box cover so as to realize the closing or opening of the box cover and the box body; the weighing box bottom driving hydraulic cylinder is used for driving the weighing box bottom to transversely slide along the weighing box bottom lower support, so that the weighing box bottom and the box body are closed or opened;
the weighing box bottom comprises a box bottom shell, a weighing plate and a weighing sensor, wherein the box bottom shell is provided with a bottom surface and four side surfaces, the weighing plate is horizontally arranged at the position of the top surface in the box bottom shell, and the weighing sensor is arranged between the weighing plate and the bottom surface of the box bottom shell; the weighing plate is in clearance fit with the four side surfaces of the box bottom shell, and waterproof sealing films are arranged between the weighing plate and the four side surfaces of the box bottom shell;
the inner part of the central upright post is provided with an equipment installation cavity, the cylinder body of the box cover driving hydraulic cylinder and the cylinder body of the weighing box bottom driving hydraulic cylinder are both installed in the equipment installation cavity of the central upright post, the action rod of the box cover driving hydraulic cylinder is positioned outside the central upright post and connected with the box cover, and the action rod of the weighing box bottom driving hydraulic cylinder is positioned outside the central upright post and connected with the weighing box bottom; a hydraulic control system is arranged in the spare installation cavity of the central upright column and is used for controlling the box cover driving hydraulic cylinders and the weighing box bottom driving hydraulic cylinders to act; the data acquisition module is arranged in the mounting cavity of the central upright post, and is connected with the weighing sensors in the bottom of each weighing box through waterproof cables, so that data acquisition is realized.
2. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the monitoring boxes are distributed in a spiral ascending ladder shape from bottom to top along the circumference of the central upright post.
3. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the top of the central upright post is provided with a lifting rope for towing the whole device.
4. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the bottom of the central upright post is provided with a base which is made of a steel plate and mainly plays a role in stabilizing the whole system.
5. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the wall of the central upright post is provided with a mounting hole for mounting a box cover driving hydraulic cylinder body and a weighing box bottom driving hydraulic cylinder body, a waterproof seal is arranged between the box cover driving hydraulic cylinder body and the mounting hole, and a waterproof seal is arranged between the weighing box bottom driving hydraulic cylinder body and the mounting hole.
6. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the number of the box cover upper supports is two, the two box cover upper supports are symmetrically and fixedly arranged on the upper parts of the left side and the right side of the box body, and the box cover upper supports are in a strip shape; the box cover is in a square plate shape, the width of the box cover is larger than that of the box body, the bottom of the left side and the bottom of the right side of the box cover are respectively provided with a sliding rail, and the box cover is slidably arranged on the box cover for supporting.
7. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the weighing box comprises two weighing box bottom lower supports, wherein the two weighing box bottom lower supports are symmetrically and fixedly arranged at the lower parts of the left side and the right side of a box body, and are in a strip shape; the left side and the right side of the box bottom shell at the bottom of the weighing box are provided with flanges corresponding to the lower support at the bottom of the weighing box, slide rails are arranged on the flanges, and the flanges are slidably mounted on the lower support at the bottom of the weighing box through the slide rails, so that the slidable mounting of the whole weighing box bottom and the lower support at the bottom of the weighing box is realized.
8. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the outer end of the action rod of the box cover driving hydraulic cylinder is connected to the outer side of the top of the box cover, and the outer end of the action rod of the weighing box bottom driving hydraulic cylinder is connected to the outer wall of the box bottom shell of the weighing box bottom.
9. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the box bottom shell of the weighing box bottom and the wall of the central upright post are provided with through holes for threading, so that waterproof cables can pass through the through holes, and waterproof sealing is performed at the through holes.
10. The in-situ testing and micro-agitating sampling device for measuring the volume weight of the return sludge at different depths in the seabed foundation trench as claimed in claim 1, wherein: the master controller is also arranged in the mounting cavity of the central upright post, is connected with the hydraulic control system and the data acquisition module and is used for carrying out master control on the hydraulic control system and the data acquisition module; the master controller is connected with the remote wireless communication module on the sea surface through the waterproof cable leading-out center upright post, and remote wireless communication with the monitoring terminal is achieved.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111912739A (en) * | 2020-08-26 | 2020-11-10 | 中交天津港湾工程研究院有限公司 | In-situ test and micro-disturbance sampling device for measuring volume weights of silt returning substances at different depths in seabed foundation trench |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912739A (en) * | 2020-08-26 | 2020-11-10 | 中交天津港湾工程研究院有限公司 | In-situ test and micro-disturbance sampling device for measuring volume weights of silt returning substances at different depths in seabed foundation trench |
| CN111912739B (en) * | 2020-08-26 | 2024-06-25 | 中交天津港湾工程研究院有限公司 | In-situ test and perturbation sampling device for measuring volume weight of back sludge at different depths in submarine foundation trench |
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