An integrated device for detecting the backfilling of a buried well and the density of the backfilling by using resistance method

Abstract

The utility model relates to the technical field of buried well construction and detection equipment, disclose a kind of integrated device for detecting and treating backfilling cavity and compactness of buried well using resistance method, including buried well, U head, ground source well inlet pipe and ground source well outlet pipe;After the U head is buried in buried well, two ends are connected ground source well inlet pipe and ground source well outlet pipe respectively, and the top of both ground source well inlet pipe and ground source well outlet pipe extends to outside of buried well;Movable vehicle;Grouting mechanism;Detection mechanism.Compared with prior art, the advantages are that: the novel can detect and solve the "bridge" (backfilling material is stuck in hole wall, and forms cavity below) and backfilling does not realize image that appears in more than 100 meters vertical buried pipe backfilling, and further improve the heat exchange efficiency of buried pipe, so that heat pump unit is more energy-saving.The detection and grouting mechanism of the novel are integrated on the same movable vehicle, realize detection and processing integration, reduce equipment handling and repeated positioning.

Description

Technical Field

[0001] This utility model relates to the technical field of underground well construction and testing equipment, specifically to an integrated device that uses resistance method to detect and process voids and density in underground well backfill. Background Technology

[0002] After the completion of underground well construction, the quality of the backfill around it directly affects the stability and service life of the well body. Currently, the testing of the backfill compaction of underground wells is mostly carried out manually or with decentralized equipment. The testing is separated from the grouting treatment, which is cumbersome, inefficient, and makes it difficult to achieve real-time monitoring and immediate treatment. In addition, traditional methods are not ideal for identifying and filling cavities in the well, which can easily lead to problems such as well body settlement or leakage.

[0003] Therefore, there is an urgent need for a device that is highly integrated and automated, capable of simultaneously performing detection and processing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a device with a high degree of integration, simple operation, and the ability to simultaneously complete the backfill compaction test and grouting treatment of buried wells.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] An integrated device for detecting and treating voids and compaction in backfill of buried wells using resistance method includes a buried well, a U-shaped connector, a ground source well inlet pipe, and a ground source well outlet pipe. The U-shaped connector is buried inside the buried well, with its two ends connected to the ground source well inlet pipe and the ground source well outlet pipe, respectively. The top ends of both the ground source well inlet pipe and the ground source well outlet pipe extend outside the buried well. The device also includes:

[0007] A mobile vehicle, comprising a chassis and wheels; multiple wheels are evenly mounted on the underside of the chassis;

[0008] The grouting mechanism includes a water tank, water pipes, a high-lift grouting pump, a pipeline hoist, a pressure gauge, and a high-pressure pneumatic pipe. The water tank and pipeline hoist are respectively installed and fixed on the chassis. The water pipe connects the high-lift grouting pump and the pressure gauge in series, with one end extending into the water tank and the other end connected to the pipeline hoist. The high-pressure pneumatic pipe is connected to and wound around the high-lift pipeline hoist, with its free end extending into the underground well. Through the operation of the high-lift grouting pump, diluted grout or adjusted grout in the water tank is injected into the underground well sequentially through the water pipe and the high-pressure pneumatic pipe, filling the underground well.

[0009] The testing mechanism includes a megohmmeter, a lead post, a lead hoist, a lead wire, and a probe. The megohmmeter and the lead hoist are respectively installed and fixed on the chassis. The megohmmeter is connected to the lead post installed on the ground through a negative test wire, and the megohmmeter is connected to the lead hoist through a positive test wire. The lead wire is connected and wound around the lead hoist, with its free end extending into the underground well and connected to the probe.

[0010] As an improvement, a filter is also connected in series on the water pipe. This effectively filters and dilutes the raw pulp or adjusts the pulp.

[0011] As an improvement, the front of the chassis is equipped with a fixed pulley assembly via a support arm. There are two sets of the support arm and the fixed pulley assembly, which are bypassed by a high-pressure pneumatic pipe and a wire, respectively.

[0012] As an improvement, a portable counterweight is provided at the rear of the chassis. This makes the new design more stable during use.

[0013] As an improvement, an integrated control cabinet is also included, which is used to control the operation of the grouting mechanism and the detection mechanism separately.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. This new type of equipment can detect and solve the problems of "bridging" (backfill material getting stuck in the middle of the hole wall, forming a void below) and incomplete backfilling when backfilling vertical buried pipes over 100 meters long, thereby improving the heat exchange efficiency of buried pipes and making heat pump units more energy-efficient.

[0016] 2. This new type integrates the detection and grouting mechanisms on the same mobile vehicle, realizing integrated detection and processing, reducing equipment handling and repositioning.

[0017] 3. The structure of this new mobile vehicle facilitates on-site movement. The fixed pulley block and lifting mechanism enable automatic deployment and retraction of pipelines and probes, reducing the intensity of manual operation.

[0018] 4. This new method uses resistance method to detect the backfill compaction in real time, and injects grout to fill the voids immediately, realizing a closed-loop operation of "detection-treatment".

[0019] 5. This new type of equipment is applicable to the backfill quality inspection and repair of various types of buried wells, pile foundations, and underground pipelines. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a partial enlargement of the present invention. Figure 1 .

[0022] Figure 3This is a partial enlargement of the present invention. Figure 2 .

[0023] As shown in the figure: 1. Underground well; 2. U-shaped connector; 3. Ground source well inlet pipe; 4. Ground source well outlet pipe; 5. Chassis; 6. Wheels; 7. Water tank; 8. Water pipe; 9. High-lift grouting pump; 10. Pipeline hoist; 11. Pressure gauge; 12. High-pressure pneumatic hose; 13. Megohmmeter; 14. Guide post; 15. Guide hoist; 16. Guide wire; 17. Probe; 18. Negative test lead; 19. Positive test lead; 20. Filter; 21. Support arm; 22. Fixed pulley block; 23. Portable counterweight; 24. Integrated control cabinet. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] like Figures 1-3 As shown, an integrated device for detecting and treating voids and compaction in the backfill of buried wells using the resistance method includes a mobile vehicle, a grouting mechanism, and a detection mechanism. The mobile vehicle consists of a chassis 5 and wheels 6, facilitating the movement of the device to different buried well locations. The grouting mechanism includes a water tank 7, a water pipe 8, a high-lift grouting pump 9, a pipeline hoist 10, a pressure gauge 11, and a high-pressure pneumatic pipe 12. The water tank 7 contains diluted raw grout or prepared grout. The grout is pumped by the high-lift grouting pump 9 through the water pipe 8 and the 6mm high-pressure pneumatic pipe 12 (high-strength, non-elastic, and with a built-in meter mark) into the buried well 1 to achieve backfilling and void filling. The water pipe 8 is equipped with a filter 20 (40 mesh) to filter impurities in the grout and prevent pipe blockage.

[0027] The testing mechanism includes a megohmmeter 13, a guide post 14, a guide hoist 15, a guide wire 16, and a probe 17. The megohmmeter 13 (1000 volts, 0–1000 megohms) is connected to the probe 17 via the guide wire 16 (high-strength, inelastic, and with a built-in meter mark). The probe 17 extends deep into the well, and the change in resistance determines the backfill compaction and the location of voids. Testing and grouting can be performed simultaneously or alternately, achieving integrated operation.

[0028] To optimize the structure, the front of the chassis 5 is equipped with a fixed pulley group 22 supported by a support arm 21, which is used to guide the high-pressure pneumatic pipe 12 and the wire 16, reducing friction and entanglement. The rear of the chassis 5 is equipped with a portable counterweight 23 (5 kg), which can be adjusted according to site requirements to improve equipment stability. The device is also equipped with an integrated control cabinet 24 to realize centralized control of grouting and testing, and supports switching between manual and automatic modes.

[0029] In practical use, operators can start the detection mechanism through the control cabinet. The probe descends along the well depth and collects resistance data in real time. After an abnormal area is found, the detection is paused and the grouting mechanism is started. Grout is injected into the area through a high-pressure pneumatic pipe. After the grouting is completed, the filling effect can be tested and verified again.

[0030] Working principle:

[0031] This invention is based on the principle of resistance method detection: when the backfill density of a buried well is uneven or there are voids, the resistivity of the medium will change. As the probe 17 moves inside the well, the megohmmeter 13 measures the resistance between the probe and the grounding conductor 14, reflecting the compaction status of the surrounding soil or backfill material in real time (during the lifting process, the reading of the megohmmeter 13 is continuously read; when the pointer points to infinity, the depth is recorded). When an area with abnormally high resistance is detected, it is determined to be a void or loose area, and the grouting mechanism is immediately activated. Grout is injected into the area through the high-pressure pneumatic pipe 12 to fill the voids and improve the compaction. During grouting, the pressure gauge 11 monitors the grouting pressure in real time to avoid damage to the well body due to excessive pressure. The detection and grouting processes can be coordinated and controlled by the integrated control cabinet 24 to achieve intelligent and continuous operation.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An integrated device for detecting and treating voids and compaction in backfill of buried wells using resistance method, comprising a buried well (1), a U-shaped head (2), a ground source well inlet pipe (3), and a ground source well outlet pipe (4); wherein the U-shaped head (2) is buried in the buried well (1), and its two ends are respectively connected to the ground source well inlet pipe (3) and the ground source well outlet pipe (4), and the top ends of both the ground source well inlet pipe (3) and the ground source well outlet pipe (4) extend outside the buried well (1), characterized in that, Also includes: The mobile vehicle includes a chassis (5) and wheels (6); multiple wheels (6) are evenly installed on the underside of the chassis (5); The grouting mechanism includes a water tank (7), a water pipe (8), a high-lift grouting pump (9), a pipeline hoist (10), a pressure gauge (11), and a high-pressure pneumatic pipe (12). After the water tank (7) and the pipeline hoist (10) are respectively installed and fixed on the chassis (5), the water pipe (8) is connected in series with the high-lift grouting pump (9) and the pressure gauge (11), with one end extending into the water tank (7) and the other end connected to the pipeline hoist (10). The high-pressure pneumatic pipe (12) is connected to and wound around the high-lift pipeline hoist (10), with the free end extending into the underground well (1). Through the operation of the high-lift grouting pump (9), the diluted grout or slurry in the water tank (7) is injected into the underground well (1) through the water pipe (8) and the high-pressure pneumatic pipe (12) in sequence, filling the underground well (1). The testing mechanism includes a megohmmeter (13), a guide post (14), a guide hoist (15), a guide wire (16), and a probe (17). The megohmmeter (13) and the guide hoist (15) are respectively installed and fixed on the chassis (5). The megohmmeter (13) is connected to the guide post (14) installed on the ground through a negative test line (18), and the megohmmeter (13) is connected to the guide hoist (15) through a positive test line (19). The guide wire (16) is connected to and wound around the guide hoist (15), and the free end extends into the underground well (1) and is connected to the probe (17).

2. The integrated device for detecting and treating voids and compaction in backfill of buried wells using the resistance method as described in claim 1, characterized in that: A filter (20) is also connected in series on the water pipe (8).

3. The integrated device for detecting and treating voids and compaction in backfill of buried wells using the resistance method according to claim 1, characterized in that: The front of the chassis (5) is supported by a fixed pulley assembly (22) via a support arm (21). The support arm (21) and the fixed pulley assembly (22) are configured in two parts, which are bypassed by a high-pressure pneumatic pipe (12) and a wire (16), respectively.

4. The integrated device for detecting and treating voids and density in backfill of buried wells using the resistance method as described in claim 3, characterized in that: A portable counterweight (23) is provided at the rear of the chassis (5).

5. The integrated device for detecting and treating voids and compaction in backfill of buried wells using the resistance method according to claim 1, characterized in that: It also includes an integrated control cabinet (24) for controlling the operation of the grouting mechanism and the testing mechanism respectively.

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