In-situ multi-point synchronous sampling and bottom mud disturbance resisting soil measuring structure

Abstract

The utility model discloses an in-situ multi-point synchronous sampling and bottom mud disturbance resisting soil measuring structure, and particularly relates to the technical field of environmental water body detection, the measuring structure comprises a testing main body and a vertical shaft sleeve, the testing main body comprises a main body and a shell, the main body comprises a testing rod, testing units used for testing the salt content, the conductivity and the temperature of water are arranged on the testing rod at equal intervals, and the top end and the bottom end of each testing unit are isolated through a sealing section; a lead connected with the testing unit penetrates out of the top end of the testing rod through the sealing section; the casing comprises a drilling casing and a sleeving casing which are used for drilling a soil layer and protecting, the drilling casing is arranged at one section of the test rod, the main body is mounted in the sleeving casing, a plurality of uniformly distributed drill holes are formed in the sleeving casing, the drill holes correspond to the test units in position, and the drill holes are communicated with the casing. And water is permeated in the sleeve shell.

Description

Technical Field

[0001] This utility model relates to the field of environmental water body detection technology, specifically to an in-situ multi-point synchronous sampling and soil measurement structure resistant to bottom sediment disturbance. Background Technology

[0002] Currently, salinity and conductivity sensors are used to determine the salinity of water or soil samples, while titration or sun-drying and weighing methods are used to determine the salinity of water samples. However, when it is necessary to determine the change of soil salinity over time, or to determine the gradient of soil salinity changes at adjacent measuring points, single-point measurement or sampling is difficult to perform. Furthermore, the synchronization of multi-point sampling is difficult to guarantee, leading to inaccurate measurement results. Utility Model Content

[0003] To address this issue, this invention provides an in-situ multi-point synchronous sampling and sediment disturbance-resistant soil measurement structure. Firstly, it solves the problem of asynchronous multi-point soil salinity sampling by employing a high-frequency data acquisition unit with a built-in electronic synchronization clock to ensure synchronous multi-point sampling. Secondly, to address the real-time data acquisition of the vertical salinity gradient and its continuous changes over time in reservoir sediment, a metal sleeve is used to fix the spacing of sensors, physically isolating them to ensure independent data from adjacent measuring points. Conventional reservoir sediment salinity measurement sensors are prone to sediment disturbance during installation, leading to unstable or deviating measurement data, or vertically inconsistent data from adjacent measuring points. To solve the problem of scientific installation, a pre-installed sleeve and statically pressurized installation method is used to perfectly resolve the sediment disturbance issue caused by equipment installation.

[0004] This utility model provides the following specific technical solution: an in-situ multi-point synchronous sampling and anti-sediment disturbance soil measurement structure, the measurement structure includes a test body and a vertical shaft sleeve; the test body includes a main body and an outer shell, the main body includes a test rod, the test rod is provided with test units for testing water content, salinity, electrical conductivity and temperature at equal intervals, the top and bottom of each test unit are isolated by a sealing section, and the lead wire connected to the test unit passes through the sealing section and exits the top of the test rod; the outer shell includes a drilling outer shell for drilling into the soil layer and for protection and a suit outer shell, the drilling outer shell is set at one section of the test rod, the main body is installed inside the suit outer shell, the suit outer shell has multiple evenly distributed drill holes, the multiple drill holes correspond to the positions of multiple test units, so that the inside of the suit outer shell is permeable to water;

[0005] The vertical shaft sleeve is vertically implanted at the selected measurement point. After the water in the test area inside the vertical shaft sleeve is pumped out, clean water is injected. The test body is implanted in the center of the vertical shaft sleeve. The test body is connected to the external solar power supply unit, data acquisition and wireless transmission unit.

[0006] Preferably, the net length of the test unit is 200mm, the net length of the sealing section is 60mm and the two sections together are 120mm, and the length of the connecting section between two adjacent sealing sections is 680mm.

[0007] Preferably, the shaft sleeve is a steel pipe with an open top, an inner diameter of 1000mm, a wall thickness of 8-12mm, and an installation depth that depends on the water depth; the total length of the test rod is 3m.

[0008] Preferably, the sealing section includes an upper partition and a lower partition, the upper partition and the lower partition are distributed vertically and the space between them is filled with sealant, and both the upper partition and the lower partition are reserved with reserved wire holes for the lead wire to pass through.

[0009] Preferably, the inner wall of the outer casing of the kit has a pre-drilled injection hole for injecting sealant at the position corresponding to the sealing section.

[0010] Preferably, the outer casing of the kit is made of DN100 galvanized pipe.

[0011] This utility model has the following advantages:

[0012] This invention, through the combination and installation of a vertical shaft sleeve and a test body, achieves synchronous data acquisition of multi-point sampling for on-site monitoring of soil salinity compared to existing technologies; solves the problem of real-time acquisition of vertical salinity gradient in reservoir sediment while ensuring independent data from adjacent measuring points; resolves the problem of sediment disturbance caused by the installation of reservoir sediment salinity measurement sensor equipment; avoids interference between vertical measuring points during installation; and can continuously test changes in salinity of reservoir sediment and clear water, obtaining the salinity gradient of reservoir sediment and its change over time. Construction is simple. Attached Figure Description

[0013] Figure 1 A schematic diagram of the test body structure provided by this utility model;

[0014] Figure 2 A schematic diagram of the test body structure without the outer casing provided by this utility model;

[0015] Figure 3 Provided by this utility model Figure 2 Schematic diagram of the structure of section A;

[0016] Figure 4 Provided by this utility model Figure 2 A schematic diagram of the structure viewed from below;

[0017] Figure 5 A front view schematic diagram of the in-situ multi-point synchronous sampling and sediment-disturbance-resistant soil measurement structure provided by this utility model;

[0018] Figure 6A top view schematic diagram of the in-situ multi-point synchronous sampling and sediment disturbance-resistant soil measurement structure provided by this utility model;

[0019] In the diagram: 1. Test rod; 2. Lower drill housing; 3. Test unit; 4. Sealing section; 41. Upper partition; 42. Reserved wire hole; 43. Lower partition; 5. Housing; 51. Drill hole; 6. Shaft sleeve. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figure 1-6 As shown, this embodiment provides an in-situ multi-point synchronous sampling and sediment disturbance-resistant soil measurement structure. The measurement structure includes a test body and a vertical shaft sleeve 6. The test body includes a main body and an outer shell. The main body includes a test rod 1, on which test units 3 for testing water content, salinity, electrical conductivity, and temperature are arranged at equal intervals. The top and bottom of each test unit 3 are isolated by a sealing section 4. The test unit 3 uses a high-frequency data acquisition unit F9164. To address the real-time data acquisition of the vertical salinity gradient of reservoir sediment and its continuous changes over time, the high-frequency data acquisition unit is arranged at fixed intervals in the sealing section 4. The high-frequency data acquisition units are physically isolated to ensure independent data from adjacent measuring points. To solve the problem of asynchronous multi-point soil salinity sampling, a built-in electronic synchronization clock of the high-frequency data acquisition unit is used to ensure synchronous multi-point sampling. The lead wire connected to the test unit 3 passes through the sealing section 4 and exits from the top of the test rod 1.

[0022] When installing conventional reservoir sediment salinity sensors, sediment disturbance is easily caused, leading to unstable measurement data, deviations from normal values, or inconsistencies in data from adjacent vertical measuring points. To address this scientific installation issue, a casing is used, with the entire unit statically pressed into the reservoir bottom, perfectly resolving the sediment disturbance problem during installation. The casing includes a lowering casing 2 for drilling into the soil layer and for protection, and a mounting casing 5. The lowering casing 2 is located at the bottom of the test rod 1, and the main body is installed inside the mounting casing 5. The mounting casing 5 has multiple evenly distributed drill holes 51, which correspond to the positions of multiple test units 3, allowing water to permeate the interior of the mounting casing 5.

[0023] The vertical shaft sleeve 6 is vertically implanted at the selected measurement point. After the water in the test water area inside the vertical shaft sleeve 6 is pumped out, clean water is injected. The test body is implanted in the center of the vertical shaft sleeve 6. The test body is connected to the external solar power supply unit, data acquisition and wireless transmission unit.

[0024] As a preferred technical solution of this application, the net length of the test unit 3 is 200mm, the net length of the sealing section 4 is 60mm and the two sections together are 120mm, and the length of the connecting section between two adjacent sealing sections 4 is 680mm.

[0025] As a preferred technical solution of this application, the vertical shaft sleeve 6 is a steel pipe with an open top, an inner diameter of 1000mm, a wall thickness of 8-12mm, and an installation depth that depends on the water depth; the total length of the test rod 1 is 3m.

[0026] As a preferred technical solution of this application, the sealing section 4 includes an upper partition 41 and a lower partition 43, the upper partition 41 and the lower partition 43 are distributed vertically and the space between them is filled with sealant, and both the upper partition 41 and the lower partition 43 are reserved with reserved wire holes 42 for passing through the lead wire.

[0027] As a preferred technical solution of this application, the inner wall of the outer casing 5 is provided with a glue injection hole for injecting sealant at the position corresponding to the sealing section 4, so as to ensure physical isolation between high frequency data acquisition devices and ensure independent data of adjacent measurement points.

[0028] As a preferred technical solution of this application, the outer casing 5 of the kit is made of DN100 galvanized pipe.

[0029] During the experiment, firstly, measuring devices such as... were installed at the selected measuring points within the reservoir. Figure 6 The shaft sleeve 6 shown is a steel pipe with an inner diameter of 1000mm and a wall thickness of 8-12mm. The installation depth depends on the water depth; at a water depth of 5.0m, the shaft sleeve 6 is inserted 3.0m into the bottom sediment and 1.0m above the water surface, with a total length of 9.0m. After installation, a submersible pump is inserted from the top of the shaft sleeve 6 to drain the water from the reservoir inside, and clean water is injected through a water pipe inserted from the top of the shaft sleeve 6. The surface sediment inside the shaft sleeve 6 is sampled to determine its salt content, and the salt content and conductivity of the injected clean water are also measured as initial values.

[0030] Install at the center position of shaft sleeve 6 Figure 1 The test equipment shown consists of multiple test units 3 installed sequentially, with a total length of 9.0m, forming... Figure 6The test system for in-situ determination of salinity release rate in reservoir sediment is shown. The F9164 high-frequency data acquisition unit receives electrical signals from test unit 3. Through its built-in synchronous clock, it ensures synchronized data sampling at multiple points. The F9164 converts the electrical signals into digital quantities, which are then transmitted wirelessly. All data acquisition and transmission equipment is powered by solar panels and batteries, enabling long-term continuous monitoring.

[0031] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A structure for in-situ multi-point synchronous sampling and soil measurement resistant to sediment disturbance, characterized in that: The measuring structure includes a test body and a shaft sleeve (6); the test body includes a main body and an outer shell, the main body includes a test rod (1), the test rod (1) is provided with test units (3) for testing water salinity, electrical conductivity and temperature at equal intervals, the top and bottom of each test unit (3) are isolated by a sealing section (4), and the lead wire connected to the test unit (3) passes through the sealing section (4) and exits the top of the test rod (1); the outer shell includes a drilling outer shell (2) for drilling into the soil layer and for protection and a suit outer shell (5), the drilling outer shell (2) is set in a section of the test rod (1), the main body is installed inside the suit outer shell (5), the suit outer shell (5) has multiple evenly distributed drill holes (51), the multiple drill holes (51) correspond to the positions of multiple test units (3), so that the suit outer shell (5) is permeable to water; The vertical shaft sleeve (6) is vertically implanted at the selected measurement point. After the water in the test water area inside the vertical shaft sleeve (6) is pumped out, clean water is injected. The test body is implanted in the center of the vertical shaft sleeve (6). The test body is connected to the external solar power supply unit, data acquisition and wireless transmission unit.

2. The in-situ multi-point synchronous sampling and sediment-disturbance-resistant soil measurement structure according to claim 1, characterized in that: The test unit (3) has a net length of 200 mm, the sealing section (4) has a net length of 60 mm and the two sections together have a total length of 120 mm, and the connecting section between two adjacent sealing sections (4) has a length of 680 mm.

3. The in-situ multi-point synchronous sampling and sediment-disturbance-resistant soil measurement structure according to claim 1, characterized in that: The vertical shaft sleeve (6) is a steel pipe with an open top, an inner diameter of 1000 mm, a wall thickness of 8-12 mm, and an installation depth that depends on the water depth; the total length of the test rod (1) is 3 m.

4. The in-situ multi-point synchronous sampling and sediment-disturbance-resistant soil measurement structure according to claim 1, characterized in that: The sealing section (4) includes an upper partition (41) and a lower partition (43). The upper partition (41) and the lower partition (43) are distributed vertically and are filled with sealant between them. Both the upper partition (41) and the lower partition (43) have reserved wire holes (42) for the lead wire to pass through.

5. The in-situ multi-point synchronous sampling and sediment-disturbance-resistant soil measurement structure according to claim 1, characterized in that: The inner wall of the outer casing (5) of the package is reserved with an injection hole for injecting sealant at the position corresponding to the sealing section (4).

6. The in-situ multi-point synchronous sampling and sediment-disturbance-resistant soil measurement structure according to claim 1, characterized in that: The outer casing (5) of the kit is made of DN100 galvanized pipe.

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