Hydraulic engineering foundation detection device

Abstract

The invention discloses a hydraulic engineering foundation detection device, and relates to the technical field of hydraulic engineering, the hydraulic engineering foundation detection device comprises a counterweight bottom plate, the middle part of the counterweight bottom plate is provided with a detection groove, and the inner wall of the detection groove is movably connected with an outer ring. The counterweight bottom plate and the U-shaped frame are placed on the inclined foundation, so that a to-be-detected position is completely exposed in the detection groove, the outer ring and the inner ring are integrally installed in the detection groove, the inner ring guide pipe and the outer ring guide pipe are connected with the water storage tanks at the corresponding positions, and water temporarily stored in the water storage tanks enters the outer ring and the inner ring through the inner ring guide pipe and the outer ring guide pipe; according to the device, permeability detection is started, through cooperation with the action of an inner ring piston plate and an outer ring piston plate, a cavity formed in unit distance can be filled with water injected into an outer ring water inlet and an inner ring water inlet in unit time, and therefore it is guaranteed that the uniform permeation effect can be kept between the injected water and a foundation under the condition that the injected water applies pressure externally.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and in particular to a water conservancy project foundation detection device. Background Art

[0002] The foundation refers to the soil or rock supporting the base of a building. The soil layers serving as the foundation of a building are divided into rock, gravel soil, sand, silt, clay and artificial fill. There are two types of foundations: natural foundations and artificial foundations. After the foundation construction is completed, the foundation needs to be inspected. Foundation inspection is an important part of water conservancy project construction. Its purpose is to evaluate the stability and bearing capacity of the foundation, thereby ensuring the safety and reliability of the project.

[0003] The foundation inspection of water conservancy projects requires a comprehensive assessment of the safety and stability of the foundation, mainly testing the following core data indicators: basic physical parameters, mechanical properties, defects and integrity detection, etc. Basic physical parameters mainly include soil density and moisture content, porosity and permeability, etc. Mechanical properties include foundation bearing capacity, deformation modulus, Poisson's ratio and shear strength, etc. Defect and integrity detection includes internal defects, pile body integrity, etc.

[0004] Among them, permeability reflects the ability of fluid to pass through the soil. When conducting permeability testing on the foundation, in order to reduce the problem of lateral dispersion, the double-ring method is often used to test the foundation permeability. The main process is: the inner and outer rings are concentrically embedded in the bottom of the pit, the gap between the rings is filled with soil to seal, and then water is injected into the inner and outer rings at the same time, maintaining a water depth of 10 cm, recording the water seepage of the inner ring per unit time, and calculating the permeability coefficient.

[0005] However, the existing double-ring method has the problems of using many devices and being complicated to operate. In addition, when the double-ring method is used to detect a sloped foundation, since the double rings are perpendicular to the inclined foundation, during the process of injecting water between the double rings, the injected water will first accumulate at a lower place under the action of gravity, and the water level will gradually rise, which will lower the overall center of gravity of the double rings and the injected water, and may easily cause unstable installation. At the same time, the bottom surface of the foundation at a lower place contacts with water earlier and the infiltration effect occurs earlier, while the bottom surface of the foundation at a higher place contacts with water later and the infiltration effect occurs later. The water infiltration conditions at different positions of the foundation are different, which affects the uniformity of the water injection process and may cause errors in the liquid level detection of the inner and outer rings, thereby affecting the accuracy of the final calculation of the overall infiltration amount of the foundation. Summary of the Invention

[0006] The present invention provides a water conservancy project foundation detection device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A water conservancy project foundation detection device includes a counterweight base plate, a detection groove is opened in the middle of the counterweight base plate, an outer ring is movably connected to the inner wall of the detection groove, and an inner ring is concentrically movably connected to the inner wall of the outer ring. The top ends of the outer ring and the inner ring are fixedly connected by multiple connecting rods, one of the connecting rods is movably connected to the inner ring conduit, and the other connecting rod is movably connected to the outer ring conduit.

[0009] A U-shaped frame is fixedly connected to the counterweight base plate, and the U-shaped frame spans the detection slot. Two water storage tanks are movably connected to the U-shaped frame, and the inner ring conduit and the outer ring conduit are both connected to a water storage tank through the inner ring conduit.

[0010] A plurality of outer ring water inlets are provided on the inner side of the bottom of the outer ring, and a plurality of inner ring water inlets are provided on the inner side of the bottom of the inner ring. The inner ring conduit, the connecting rod connected to the inner ring conduit, the inner ring, and the inner ring water inlets are interconnected. The outer ring conduit, the connecting rod connected to the outer ring conduit, the outer ring, and the outer ring water inlets are interconnected.

[0011] A further improvement of the technical solution of the present invention is that an inner ring piston plate is movably connected to the inner wall of the inner ring, and an outer ring piston plate is movably connected between the outer ring and the inner ring. The inner ring piston plate and the outer ring piston plate can move up and down along the outer ring and the inner ring.

[0012] A further improvement of the technical solution of the present invention is that: in the initial stage, the inner ring piston plate and the outer ring piston plate are both at the bottom. When the inner ring piston plate and the outer ring piston plate move upward a unit distance, the volume of the cavity formed between the outer ring and the inner ring is consistent with the water intake per unit time of the outer ring water inlet and the inner ring water inlet.

[0013] A further improvement of the technical solution of the present invention is that: the outside of the outer ring is fixedly connected with a plurality of clamping blocks, and the upper surface of the counterweight base plate is located around the detection groove and is fixedly connected with a plurality of clamping sleeves. Rotating the outer ring drives the clamping blocks to rotate together to form a clamping connection with the clamping sleeves.

[0014] A further improvement of the technical solution of the present invention is that a plurality of mounting grooves are provided on the U-shaped frame, and a lifting rod is movably connected to the inner wall of each mounting groove, and one end of the lifting rod is movably connected to the inner ring piston plate and the outer ring piston plate.

[0015] A further improvement of the technical solution of the present invention is that: the output end of the lifting rod is fixedly connected to a retaining ring, pressure sensors are installed on the inner ring piston plate and the outer ring piston plate corresponding to the retaining ring, a locking block is movably connected to the inner wall of the retaining ring, and one side of the locking block is fixedly connected to a telescopic rod.

[0016] A further improvement of the technical solution of the present invention is that: a limiting slip ring is fixedly connected to the upper surface of the inner ring piston plate, the limiting slip ring is movably connected to the locking block, and the number of the limiting slip rings is adapted to the amount of the limiting slip rings and the locking block.

[0017] A further improvement of the technical solution of the present invention is that each of the water storage tanks is placed horizontally and is provided with a scale.

[0018] A further improvement of the technical solution of the present invention is that the outer ring and the inner ring are both made of transparent material, and scales are provided on the outer surfaces of the outer ring and the inner ring.

[0019] A further improvement of the technical solution of the present invention is that the inner ring conduit and the outer ring conduit are both movably connected with an electrically controlled valve to control the water output, so as to keep the water levels in the outer ring and the inner ring at the same height.

[0020] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art:

[0021] 1. The present invention provides a foundation detection device for a water conservancy project, wherein a counterweight base plate and a U-shaped frame are placed on an inclined foundation so that the position to be detected is completely exposed in the detection groove, and then the outer ring and the inner ring are installed as a whole in the detection groove, and then the inner ring conduit and the outer ring conduit are connected to the water storage tank at the corresponding position, and then the inner ring piston plate and the outer ring piston plate are driven by the lifting rod to move a unit distance, and then the electric control valves on the inner ring conduit and the outer ring conduit are opened, and the water temporarily stored in the water storage tank will enter the outer ring and the inner ring through the inner ring conduit and the outer ring conduit, and the permeability detection is started. With the action of the inner ring piston plate and the outer ring piston plate, the water injected per unit time into the outer ring water inlet and the inner ring water inlet can fill the cavity formed per unit distance, so that when the injected water is under external pressure, it is ensured that the injected water body and the foundation can maintain uniform penetration.

[0022] 2. The present invention provides a water conservancy project foundation detection device. The water storage tanks are all placed horizontally and are provided with scales to facilitate reading the water volume in the water storage tanks at any time.

[0023] 3. The present invention provides a foundation detection device for a water conservancy project. The outer ring and the inner ring are both made of transparent materials. Scales are set on the outer surfaces of the outer ring and the inner ring, which is convenient for observing the water conditions in the outer ring and the inner ring at any time and keeping the liquid level heights in the outer ring and the inner ring consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 This is a structural diagram of the counterweight base plate and the U-shaped frame of the present invention;

[0026] Figure 3 Schematic diagram of the structure of the outer ring and inner ring of the present invention;

[0027] Figure 4 This is a schematic structural diagram of the outer ring and the inner ring bottom of the present invention;

[0028] Figure 5 Schematic diagram of the cross-sectional structure of the outer ring and the inner ring of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the inner ring piston plate and the outer ring piston plate of the present invention;

[0030] Figure 7 For the present invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0031] In the figure: 1. Counterweight base plate; 2. Detection groove; 3. Clamping ring; 4. U-shaped frame; 5. Outer ring; 6. Inner ring; 7. Connecting rod; 8. Clamping block; 9. Scale; 10. Inner ring guide tube; 11. Outer ring guide tube; 12. Water storage tank; 13. Outer ring water inlet; 14. Inner ring water inlet; 15. Inner ring piston plate; 16. Outer ring piston plate; 17. Lifting rod; 18. Clamping ring; 19. Pressure sensor; 20. Telescopic rod; 21. Limiting slip ring; 22. Locking block; 23. Mounting groove; 24. Inclined foundation. DETAILED DESCRIPTION

[0032] The present invention is described in further detail below in conjunction with the embodiments:

[0033] Example:

[0034] like Figure 1-7 As shown, the present invention provides a water conservancy project foundation detection device, including a counterweight base plate 1, which is made of a heavier material. A detection groove 2 is opened in the middle of the counterweight base plate 1, and the size of the detection groove 2 can be selected according to the detection needs. The inner wall of the detection groove 2 is movably connected with an outer ring 5, and the inner part of the outer ring 5 is concentrically movably connected with an inner ring 6. The top ends of the outer ring 5 and the inner ring 6 are fixedly connected by multiple connecting rods 7, one of the connecting rods 7 is movably connected to an inner ring conduit 10, and the other connecting rod 7 is movably connected to an outer ring conduit 11.

[0035] A U-shaped frame 4 is fixedly connected to the counterweight base plate 1, and the U-shaped frame 4 spans the detection slot 2. Two water tanks 12 are movably connected to the U-shaped frame 4. The inner ring conduit 10 and the outer ring conduit 11 are both connected to a water tank 12 through the inner ring conduit 10. The water tank 12 is made of transparent material, and an injection pipe is fixedly connected to the water tank 12, which can be used to inject water into the water tank 12. An air hole is opened on the water tank 12. The position of the water tank 12 is higher than the highest point of the outer ring 5 and the inner ring 6, which is convenient for the discharge of water in the water tank 12.

[0036] A plurality of outer ring water inlets 13 are provided on the inner side of the bottom of the outer ring 5, and a plurality of inner ring water inlets 14 are provided on the inner side of the bottom of the inner ring 6. The inner ring conduit 10, the connecting rod 7 connected to the inner ring conduit 10, the inner ring 6, and the inner ring water inlets 14 are interconnected, and the outer ring conduit 11, the connecting rod 7 connected to the outer ring conduit 11, the outer ring 5, and the outer ring water inlets 13 are interconnected.

[0037] Place the counterweight base plate 1 and the U-shaped frame 4 on the inclined foundation 24 so that the position to be tested is completely exposed in the test groove 2, and then install the outer ring 5 and the inner ring 6 as a whole in the test groove 2, and then connect the inner ring conduit 10 and the outer ring conduit 11 to the water storage tank 12 at the corresponding position. The water temporarily stored in the water storage tank 12 will enter the outer ring 5 and the inner ring 6 through the inner ring conduit 10 and the outer ring conduit 11 to start permeability testing. Through the arrangement of the outer ring water inlet 13 and the inner ring water inlet 14, water can be injected at multiple points, so that the injected water can enter in multiple directions of the foundation to be tested and perform infiltration at the same time, avoiding the problem that the foundation bottom surface at a higher place comes into contact with water late, affecting the infiltration effect.

[0038] Furthermore, an inner ring piston plate 15 is movably connected to the inner wall of the inner ring 6, and an outer ring piston plate 16 is movably connected between the outer ring 5 and the inner ring 6. The inner ring piston plate 15 and the outer ring piston plate 16 can move up and down along the outer ring 5 and the inner ring 6. By changing the positions of the inner ring piston plate 15 and the outer ring piston plate 16, the volume of the cavity formed between the outer ring 5 and the inner ring 6 can be changed. When the positions of the inner ring piston plate 15 and the outer ring piston plate 16 are lower, the amount of water injected through the outer ring water inlet 13 and the inner ring water inlet 14 per unit time is the same as the cavity solvent, that is, the injected water can directly cover the entire foundation part per unit time, so that the foundation to be tested is in uniform contact with the injected water, avoiding the injected water accumulating at a lower place under the action of gravity, and the water level gradually rising, so that the overall center of gravity of the double rings and the injected water is lowered, which is prone to unstable installation.

[0039] Furthermore, in the initial stage, the inner ring piston plate 15 and the outer ring piston plate 16 are both at the bottom. When the inner ring piston plate 15 and the outer ring piston plate 16 move upward a unit distance, the volume of the cavity formed between the outer ring 5 and the inner ring 6 is consistent with the water intake per unit time of the outer ring water inlet 13 and the inner ring water inlet 14, and the upward movement speed of the inner ring piston plate 15 and the outer ring piston plate 16 remains consistent, that is, each time a unit distance is moved, the water injected per unit time into the outer ring water inlet 13 and the inner ring water inlet 14 can fill the cavity, so that when the injected water is under external pressure, uniform penetration is maintained between the injected water body and the foundation.

[0040] Furthermore, the outside of the outer ring 5 is fixedly connected with a plurality of clamping blocks 8, and the upper surface of the counterweight base plate 1 is located at the periphery of the detection groove 2 and is fixedly connected with a plurality of clamping sleeves 3. Rotating the outer ring 5 drives the clamping blocks 8 to rotate together to form a clamping connection with the clamping sleeve 3. After the outer ring 5 and the inner ring 6 are placed in the detection groove 2, rotating the outer ring 5 and the inner ring 6 can make the clamping blocks 8 form a clamping connection with the clamping sleeve 3, thereby ensuring the stability of the equipment during operation, and the injected water will not affect the center of gravity position of the device, causing the device to become unstable.

[0041] Furthermore, a plurality of mounting grooves 23 are provided on the U-shaped frame 4, and a lifting rod 17 is movably connected to the inner wall of each mounting groove 23. One end of the lifting rod 17 is movably connected to the inner ring piston plate 15 and the outer ring piston plate 16. The lifting rod 17 can drive the inner ring piston plate 15 and the outer ring piston plate 16 to rise or fall.

[0042] Furthermore, a retaining ring 18 is fixedly connected to the output end of the lifting rod 17, and a pressure sensor 19 is installed on the inner ring piston plate 15 and the outer ring piston plate 16 corresponding to the retaining ring 18. A locking block 22 is movably connected to the inner wall of the retaining ring 18, and a telescopic rod 20 is fixedly connected to one side of the locking block 22. In the initial stage, the inner ring piston plate 15 and the outer ring piston plate 16 are at the bottom of the outer ring 5 and the inner ring 6. After the lifting rod 17 drives the retaining ring 18 to move downward and abut against the pressure sensor 19, the pressure sensor 19 receives a pressure signal. At this time, the locking block 22 is driven forward by the telescopic rod 20 to form a snap connection with the retaining ring 18, thereby completing the connection between the lifting rod 17 and the inner ring piston plate 15 and the outer ring piston plate 16. The inner ring piston plate 15 and the outer ring piston plate 16 can be driven up or down by the lifting rod 17 to facilitate installation or disassembly.

[0043] Furthermore, the upper surface of the inner ring piston plate 15 is fixedly connected to a limiting slip ring 21 , which is movably connected to a locking block 22 . The number of the limiting slip rings 21 matches the number of the locking blocks 22 to ensure the sliding direction of the locking blocks 22 .

[0044] Furthermore, each water storage tank 12 is placed horizontally, and a scale is provided on the water storage tank 12 to facilitate reading the water amount in the water storage tank 12 at any time.

[0045] Furthermore, the outer ring 5 and the inner ring 6 are both made of transparent material, and scales 9 are provided on the outer surfaces of the outer ring 5 and the inner ring 6, so as to facilitate observation of the water conditions in the outer ring 5 and the inner ring 6 at any time and keep the liquid level heights in the outer ring 5 and the inner ring 6 consistent.

[0046] Furthermore, both the inner ring conduit 10 and the outer ring conduit 11 are movably connected with electrically controlled valves for controlling the water output so as to keep the water levels in the outer ring 5 and the inner ring 6 at the same height.

[0047] The following is a detailed description of the working principle of the water conservancy project foundation detection device.

[0048] like Figure 1-7 As shown, the counterweight base plate 1 and the U-shaped frame 4 are placed on the inclined foundation 24 so that the position to be tested is completely exposed in the test groove 2, and then the outer ring 5 and the inner ring 6 are installed as a whole in the test groove 2, and then the inner ring conduit 10 and the outer ring conduit 11 are connected to the water storage tank 12 at the corresponding position, and then the inner ring piston plate 15 and the outer ring piston plate 16 are driven by the lifting rod 17 to move a unit distance, and then the electric control valves on the inner ring conduit 10 and the outer ring conduit 11 are opened, and the water temporarily stored in the water storage tank 12 will enter the outer ring 5 and the inner ring 6 through the inner ring conduit 10 and the outer ring conduit 11, and the permeability test is started. With the action of the inner ring piston plate 15 and the outer ring piston plate 16, the water injected per unit time into the outer ring water inlet 13 and the inner ring water inlet 14 can fill the cavity formed per unit distance, so that the injected water can maintain uniform penetration between the injected water body and the foundation when external pressure is applied.

[0049] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made based on the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A water conservancy project foundation detection device, characterized by: The invention comprises a counterweight base plate (1), a detection groove (2) is provided in the middle of the counterweight base plate (1), an outer ring (5) is movably connected to the inner wall of the detection groove (2), an inner ring (6) is concentrically movably connected to the inner wall of the outer ring (5), and the top ends of the outer ring (5) and the inner ring (6) are fixedly connected by a plurality of connecting rods (7), one of the connecting rods (7) is movably connected to the inner ring conduit (10), and the other connecting rod (7) is movably connected to the outer ring conduit (11); A U-shaped frame (4) is fixedly connected to the counterweight base plate (1), the U-shaped frame (4) spans the detection tank (2), two water storage tanks (12) are movably connected to the U-shaped frame (4), and the inner ring conduit (10) and the outer ring conduit (11) are both connected to one water storage tank (12) via the inner ring conduit (10); The inner side of the bottom of the outer ring (5) is provided with a plurality of outer ring water inlets (13), the inner side of the bottom of the inner ring (6) is provided with a plurality of inner ring water inlets (14), the inner ring conduit (10), the connecting rod (7) connected to the inner ring conduit (10), the inner ring (6), and the inner ring water inlets (14) are connected through and in communication with each other, and the outer ring conduit (11), the connecting rod (7) connected to the outer ring conduit (11), the outer ring (5), and the outer ring water inlets (13) are connected through and in communication with each other.

2. A water conservancy project foundation detection device according to claim 1, characterized in that: An inner ring piston plate (15) is movably connected to the inner wall of the inner ring (6), and an outer ring piston plate (16) is movably connected between the outer ring (5) and the inner ring (6). The inner ring piston plate (15) and the outer ring piston plate (16) can move up and down along the outer ring (5) and the inner ring (6).

3. A water conservancy project foundation detection device according to claim 2, characterized in that: In the initial stage, the inner ring piston plate (15) and the outer ring piston plate (16) are both at the bottom. When the inner ring piston plate (15) and the outer ring piston plate (16) move upward by a unit distance, the volume of the cavity formed between the outer ring (5) and the inner ring (6) is consistent with the water intake per unit time of the outer ring water inlet (13) and the inner ring water inlet (14).

4. A water conservancy project foundation detection device according to claim 1, characterized in that: The outer portion of the outer ring (5) is fixedly connected to a plurality of clamping blocks (8); the upper surface of the counterweight base plate (1) is located around the detection groove (2) and is fixedly connected to a plurality of clamping sleeves (3); rotating the outer ring (5) drives the clamping blocks (8) to rotate together to form a clamping connection with the clamping sleeves (3).

5. The water conservancy project foundation detection device according to claim 1, characterized in that: The U-shaped frame (4) is provided with a plurality of mounting grooves (23), and a lifting rod (17) is movably connected to the inner wall of each mounting groove (23), and one end of the lifting rod (17) is movably connected to the inner ring piston plate (15) and the outer ring piston plate (16).

6. A water conservancy project foundation detection device according to claim 5, characterized in that: The output end of the lifting rod (17) is fixedly connected to a snap ring (18); pressure sensors (19) are installed on the inner ring piston plate (15) and the outer ring piston plate (16) corresponding to the snap ring (18); a locking block (22) is movably connected to the inner wall of the snap ring (18); and a telescopic rod (20) is fixedly connected to one side of the locking block (22).

7. The water conservancy project foundation detection device according to claim 2, characterized in that: The upper surface of the inner ring piston plate (15) is fixedly connected to a limiting slip ring (21), and the limiting slip ring (21) is movably connected to a locking block (22). The number of the limiting slip rings (21) is adapted to the quantity of the limiting slip rings (21) and the locking block (22).

8. The water conservancy project foundation detection device according to claim 1, characterized in that: Each of the water storage tanks (12) is placed horizontally, and a scale is provided on the water storage tank (12).

9. The water conservancy project foundation detection device according to claim 1, characterized in that: The outer ring (5) and the inner ring (6) are both made of transparent material, and scales (9) are provided on the outer surfaces of the outer ring (5) and the inner ring (6).

10. The water conservancy project foundation detection device according to claim 1, characterized in that: The inner ring conduit (10) and the outer ring conduit (11) are both movably connected with an electric control valve for controlling the water output, so as to facilitate maintaining the water levels in the outer ring (5) and the inner ring (6) at the same height.

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