Well diameter and well deviation detection underground exploring tube of umbrella-shaped cast-in-place pile pore-forming detector

Abstract

The utility model discloses a borehole diameter and borehole deviation detection underground exploring tube of an umbrella-shaped cast-in-place pile pore-forming detector, which comprises an underground exploring tube stainless steel shell, a quick connector connected with a cable is arranged at the upper end of the underground exploring tube stainless steel shell, and an electronic circuit board, a deviation measuring device and a pore diameter detecting device are arranged in the underground exploring tube stainless steel shell. The lower end of the underground exploring tube stainless steel shell is connected with a measuring rod rotating block installation base, a plurality of measuring rod rotating blocks are arranged on the measuring rod rotating block installation base, the measuring rod rotating blocks are installed on the measuring rod rotating block installation base through rotating shafts, and the measuring rod rotating blocks are connected with measuring rods. According to the utility model, underground detection parts of two parameters, namely the hole diameter of a formed hole and the inclination of the formed hole, are combined into a whole and are combined in the same underground exploring tube. The two parameters of the borehole diameter and the inclination degree of the formed hole can be obtained only by descending the underground exploring tube into a well once during detection of the two parameters, and the purposes of reducing the detection time, improving the detection efficiency, reducing the labor intensity of detection personnel, reducing the manufacturing cost of the instrument and the like are achieved.

Description

Technical Field

[0001] The utility model relates to a downhole probe, in particular to a downhole probe for detecting the well diameter and well inclination of an umbrella-shaped bored pile hole detector. Background Art

[0002] In major construction projects such as urban architecture, building construction, bridge construction, high-speed railways, cross-sea bridges, river bridges, urban elevated roads, maglev construction, and highway projects, underground cast-in-place piles are often used to enhance the foundation's bearing capacity for above-ground structures. Testing the quality of the bored holes before pouring cast-in-place piles is a crucial method for monitoring and ensuring their quality.

[0003] The quality inspection of bored piles generally involves four parameters: hole diameter, hole inclination, bottom sediment thickness, and hole depth. With the umbrella-type bored pile hole inspection instrument, except for hole depth inspection, which does not require a dedicated downhole probe, downhole probes are required for the inspection of the other three parameters. Generally, each parameter corresponds to a corresponding downhole probe for inspection. The hole diameter is inspected using a hole diameter inspection probe, the inclination is inspected using an inclination inspection probe, and the bottom sediment thickness is inspected using a sediment inspection probe. To inspect these three parameters, each type of probe must be lowered into the well for inspection, one by one.

[0004] Existing defects and deficiencies: 1. The umbrella-type bored pile hole detector needs to test the hole quality of bored piles three times with different downhole probes in turn to obtain the test data of three parameters, so: (1) there is a deficiency of long detection time. (2) there is a deficiency of low detection efficiency. (3) there is a deficiency of high labor intensity for the testers. 2. The detection of each parameter requires a corresponding downhole probe, so: (1) there is a deficiency of poor instrument integration. (2) there is a deficiency of high instrument manufacturing cost. Therefore, the development of an umbrella-type bored pile hole detector for detecting the well diameter and well inclination downhole probe has become a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] To address the above-mentioned shortcomings, the present utility model provides a downhole probe for detecting borehole diameter and inclination of an umbrella-type bored pile hole detector. In the borehole quality inspection of bored piles by the umbrella-type bored pile hole detector, the downhole inspection sections for the borehole diameter and inclination parameters are combined into one, integrated within the same downhole probe. Testing these two parameters requires only a single trip down the downhole probe to obtain the borehole diameter and inclination parameters, thereby reducing inspection time, improving inspection efficiency, alleviating the labor intensity of inspectors, and lowering the manufacturing cost of the instrument.

[0006] The above-mentioned purpose of the present utility model is achieved through the following technical solutions: a downhole probe for detecting the well diameter and well inclination of an umbrella-type bored pile hole detector, comprising a stainless steel shell of the downhole probe, the upper end of the stainless steel shell of the downhole probe is provided with a quick connector connected to the cable, an electronic circuit board, an inclinometer and an aperture detection device are installed inside the stainless steel shell of the downhole probe, the lower end of the stainless steel shell of the downhole probe is connected to a measuring rod rotating block mounting seat, a plurality of measuring rod rotating blocks are provided on the measuring rod rotating block mounting seat, the measuring rod rotating block is installed on the measuring rod rotating block mounting seat through a rotating shaft, and the measuring rod rotating block is connected to a measuring rod.

[0007] Furthermore, the measuring rod rotating block includes a first measuring rod rotating block, a second measuring rod rotating block, a third measuring rod rotating block, and a fourth measuring rod rotating block, a total of four blocks, and correspondingly, there are also four measuring rods connected thereto.

[0008] Furthermore, the downhole probe for detecting the well diameter and well inclination of the umbrella-type bored pile hole detector further comprises a measuring rod fixing seat, and the lower end of the measuring rod can be retracted and fixed to the measuring rod fixing seat.

[0009] The advantages of this utility model compared with the prior art are:

[0010] 1. It has the advantages of simple and reasonable structure and strong practicality.

[0011] The utility model combines two downhole detection devices, namely, detection of bored pile hole inclination and detection of hole diameter, in one downhole probe tube, which is easy to operate in actual use and has the advantages of simple and reasonable structure and strong practicality.

[0012] 2. It has the advantages of reducing detection time, reducing labor intensity and improving test efficiency.

[0013] Because a downhole probe is equipped with two parameter detection functions, namely, the inclination of the hole and the aperture, the inclination of the hole is detected during the lowering process, and the aperture is detected during the lifting process. This has the advantages of reducing detection time, reducing labor intensity and improving test efficiency.

[0014] 3. It has the advantage of reducing manufacturing costs.

[0015] The utility model combines two original downhole probe pipes into one, thus reducing parts consumption, reducing the amount of parts processing, reducing assembly man-hours, and having the advantage of reducing manufacturing costs.

[0016] 4. It has the advantage of improving instrument integration.

[0017] The utility model combines two original downhole probe pipes into one, thereby reducing the number of original three downhole probe pipes to two, and has the advantage of improving the integration of instruments.

[0018] 5. It has the advantage of high cost performance.

[0019] The utility model combines the original two downhole probe pipes into one, which not only reduces the manufacturing cost, but also has good use functions and effects, and has the advantage of high cost performance.

[0020] 6. It has the advantage of improving the technical level of the instrument.

[0021] The utility model reasonably solves the problem of installing two downhole detection devices for bored pile hole inclination and hole diameter detection on one downhole probe, and then utilizes the industrial computer function of the ground control instrument to effectively solve the high-efficiency and high-fidelity transmission of the two detection parameters between the downhole and the ground, which has the advantage of improving the technical level of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the implementation method of the hole inclination detection of the present utility model.

[0024] Figure 3 It is a schematic diagram of the implementation method of the hole diameter detection of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1 As shown, a downhole probe for detecting the well diameter and well inclination of an umbrella-type bored pile hole detector comprises a downhole probe stainless steel shell 2 and a measuring rod fixing seat 13. The upper end of the downhole probe stainless steel shell 2 is provided with a quick connector 1 connected to a cable. An electronic circuit board 3, an inclinometer 4 and an aperture detection device 5 are installed inside the downhole probe stainless steel shell 2. The lower end of the downhole probe stainless steel shell 2 is connected to a measuring rod rotating block mounting seat 6. A plurality of measuring rod rotating blocks are provided on the measuring rod rotating block mounting seat 6. The measuring rod rotating blocks are installed on the measuring rod rotating block mounting seat 6 through a rotating shaft 8. The measuring rod rotating blocks comprise a first measuring rod rotating block 7, a second measuring rod rotating block 9, a third measuring rod rotating block 10 and a fourth measuring rod rotating block 11. Each of the first measuring rod rotating block 7, the second measuring rod rotating block 9, the third measuring rod rotating block 10 and the fourth measuring rod rotating block 11 is connected to a measuring rod 12. The lower ends of the four measuring rods 12 can be retracted and fixed to the measuring rod fixing seat 13.

[0027] like Figure 1 As shown, in this embodiment, the quick connector 1 is both a force-bearing connector between the downhole probe and the lifting cable and a connector for signal transmission between the downhole probe and the ground control instrument.

[0028] The stainless steel shell 2 of the downhole probe tube has an electronic circuit board for measuring the inclination of the borehole and detecting the aperture of the borehole. As the diameter of the downhole probe tube has certain requirements, the design of the circuit board in the stainless steel shell of the downhole probe tube must take into account the requirements of the internal space of the shell.

[0029] The electronic circuit board 3 collects the drilling inclination signal and the aperture signal, performs a series of pre-processing, and after the analog-to-digital conversion of the well inclination and aperture parameters, sends them to the ground control instrument through the quick connector 1.

[0030] Inclinometer 4, a solid-state inclinometer of the present invention, uses a two-dimensional gravity accelerometer sensor, and the voltage output value thereof is linearly related to the sine of the tilt angle of the sensor.

[0031] Aperture detection device 5. This utility model utilizes a high-precision sliding-wire potentiometer assembly for aperture detection. At a specific point in the hole, four measuring arms open according to the size of the resulting hole, driving the measuring rod's rotating block to rotate. This, through a transmission device, changes the contact points of the four sliding-wire potentiometers, generating four corresponding resistance values. This calculation determines the aperture value at that point. Continuous multi-point measurement yields the complete aperture value of the measured hole.

[0032] The measuring rod rotating block mounting base 6 is used to mount the rotating blocks of the four measuring rods 12. Figure 1 Medium enlarged image.

[0033] The first measuring rod swivel block 7 is located on the left side and is mounted on the measuring rod swivel block mounting base 6 via a rotating shaft 8. During aperture testing, the swivel block automatically springs to the left, driving the measuring rod mounted at its lower end to spring open, allowing the end of the rod to contact the hole wall.

[0034] Rotating shaft 8, located slightly below the center of measuring rod rotating block 7, is mounted on measuring rod rotating block mounting base 6. The arc at the top of measuring rod rotating block 7 is not concentric with the circle centered on rotating shaft 8. Therefore, when measuring rod rotating block 7 rotates via rotating shaft 8, the transmission device can move up and down, driving the change in the position of the sliding potentiometer contact.

[0035] The second measuring rod rotating block 9 is located behind the measuring rod rotating block 10 and can drive the measuring rod installed at the lower end of the rotating block to bounce backward.

[0036] The third measuring rod rotating block 10 is located in front of the measuring rod rotating block 9 and can drive the measuring rod installed at the lower end of the rotating block to spring forward. Figure 1 The middle measuring rod rotating block 9 and the measuring rod rotating block 10 have been shifted.

[0037] The fourth measuring rod rotating block 11 is located on the right side and can drive the measuring rod installed at the lower end of the rotating block to bounce to the right.

[0038] It should be noted that on the measuring rod rotating block mounting base 6, respective rotating shafts as shown in the rotating shaft 8 are installed at the lower center position of the second measuring rod rotating block 9, the third measuring rod rotating block 10 and the fourth measuring rod rotating block 11.

[0039] The measuring rods 12 , which are four in total, are distributed in a cross-orthogonal pattern and are respectively mounted on the lower ends of the first measuring rod rotating block 7 , the second measuring rod rotating block 9 , the third measuring rod rotating block 10 , and the fourth measuring rod rotating block 11 .

[0040] The rod holder 13 gathers and secures the lower ends of the four rods 12, thereby also retracting the four rod swivel blocks back into position. The rods can be gathered and secured during probe packaging and transportation. During use, when the probe is lowered into the well to detect the inclination of the borehole, the holder is used to gather and secure the rods, forming a rigid and directional unit. When the probe reaches the bottom of the well and is lifted upward to detect the wellbore diameter, the holder automatically disengages, allowing the four rods to emerge and their respective ends to contact the borehole wall.

[0041] The implementation method of hole inclination detection of the utility model:

[0042] (1) Implementation method of hole inclination detection

[0043] The schematic diagram of the implementation method of the hole inclination detection of the utility model is as follows: Figure 2 shown. Figure 2 middle:

[0044] Downhole probe A1, the downhole probe of the present invention, at this time, the lower ends of the four measuring rods are retracted and fixed by the measuring rod fixing seat, and the entire downhole probe forms a whole with good rigidity and good guidance, which is located above the wellhead of the well being measured.

[0045] Downhole cable A2, lifting and signal transmission cable between the downhole probe and the surface winch.

[0046] The depth detection pulley A3 is installed on the electric winch A4 and at the outlet of the downhole cable A2. The downhole cable will drive the rotation of the pulley when it is lifted and lowered. It has the function of reversibly detecting the depth of the downhole probe and displays it in real time on the display screen of the ground control instrument A6.

[0047] The electric winch A4 lowers the downhole probe A1 into the well at a certain rate through the downhole cable A2 in an electrically powered manner, or lifts the downhole probe A1 out of the well at a certain rate.

[0048] The ground control instrument connection wire A5 connects the electrical signal of the downhole probe A1 and the power supply circuit of the downhole probe to the ground control instrument A6 through the cable of the electric winch A4.

[0049] The ground control instrument A6 is a ground control terminal of the present invention, which is composed of an industrial computer and a control panel.

[0050] Industrial computer display screen A7, an industrial computer LCD display screen installed on the ground control instrument A6.

[0051] Control panel A8, control panel of ground control instrument A6.

[0052] The system power supply A9, the working power supply of the electric winch A4 and the ground control instrument A6 in this test system, is AC 220V, 50Hz.

[0053] (2) Process of hole inclination detection

[0054] The process of hole inclination detection is as follows:

[0055] 1. Press Figure 2 As shown, connect the cable between the downhole probe and the ground electric winch, and connect all the wires between the various components of this test system.

[0056] 2. Turn on the system power supply to make the test system work and be in normal state.

[0057] 3. Turn on the inclination detection mode on the control panel of the ground control instrument.

[0058] 4. Turn on the winch and lower the downhole probe into the bored pile at a uniform speed according to the designed lowering rate and relying on its own weight. The inclination detection system of the downhole probe starts inclination detection.

[0059] 5. The inclination detection system detects the inclination signal at the designed sampling rate and sends it to the inclination signal processing circuit in the downhole probe for relevant processing. The final inclination signal is sent to the ground control instrument in the form of a digital signal after analog-to-digital conversion.

[0060] 6. After the ground control instrument analyzes and processes the received inclination signal, the inclination value of each sampling point is displayed in real time on the industrial computer screen.

[0061] 7. When the bottom of the downhole probe touches the bottom of the hole (when the well depth signal no longer changes), the inclination detection ends and the ground control instrument displays the hole inclination detection curve.

[0062] 8. While detecting the hole inclination, the hole depth data is detected synchronously and displayed on the same graph as the hole inclination detection curve.

[0063] 9. Based on the hole inclination detection curve and combined with the hole depth data, the inclination of each depth of the measured hole can be determined, and the overall inclination of the measured hole can be intuitively understood.

[0064] 10. The inclination data is also stored in the ground control instrument and can be retrieved for inspection or use at any time.

[0065] The implementation method of the hole diameter detection of the utility model:

[0066] (1) Implementation method of hole diameter detection

[0067] The schematic diagram of the implementation method of the hole diameter detection of the utility model is shown in Figure 3 shown. Figure 3 middle:

[0068] The meaning of serial numbers B1 to B9 is Figure 2 The meanings of A1 to A9 correspond to each other and are the same.

[0069] Downhole probe B1, the downhole probe of the present invention. At this time, the detection probe is already at the bottom of the hole, the lower ends of the four measuring rods have popped out and contacted the hole wall, and the entire downhole probe is in the state of aperture detection.

[0070] (2) Process of hole diameter detection

[0071] The process of hole diameter detection is as follows:

[0072] 1. After completing the hole inclination detection, the hole diameter detection starts from the hole bottom.

[0073] 2. Turn on the hole diameter detection mode on the control panel of the ground control instrument.

[0074] 3. Turn on the winch and slowly lift the downhole probe upwards at the designed lifting rate to start the hole diameter detection.

[0075] 4. The aperture detection device detects the aperture change signal at a designed sampling rate and sends the aperture change signal to the aperture signal processing circuit in the downhole probe for processing. After analog-to-digital conversion, the aperture signal is sent to the ground control instrument in the form of a digital signal.

[0076] 5. After the ground control instrument calculates, analyzes and processes the received aperture signal, it displays the aperture detection value of each sampling point in real time on the industrial computer screen.

[0077] 6. When the downhole probe is lifted to the wellhead position, the aperture detection is completed and the ground control instrument displays the aperture detection curve of the hole.

[0078] 7. While detecting the hole diameter, the hole depth data is also detected synchronously and displayed together with the hole diameter detection curve.

[0079] 8. Based on the hole diameter detection curve and combined with the hole depth data, the hole diameter at each depth of the measured hole can be determined, and the total hole diameter change of the measured hole can be intuitively understood.

[0080] 9. The aperture data is also stored in the ground control instrument and can be retrieved for inspection or use at any time.

[0081] In this way, the inclination and hole diameter detection of bored pile holes can be realized by using only one downhole probe and one descent and lifting.

[0082] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A downhole probe for detecting the well diameter and well inclination of an umbrella-shaped bored pile hole detector, comprising a stainless steel housing of the downhole probe, characterized in that: The upper end of the stainless steel shell of the downhole probe is provided with a quick connector connected to the cable. An electronic circuit board, an inclinometer and an aperture detection device are installed inside the stainless steel shell of the downhole probe. The lower end of the stainless steel shell of the downhole probe is connected to a measuring rod rotating block mounting seat. A plurality of measuring rod rotating blocks are provided on the measuring rod rotating block mounting seat. The measuring rod rotating blocks are installed on the measuring rod rotating block mounting seat through a rotating shaft. The measuring rod rotating block is connected to the measuring rod.

2. The downhole probe for detecting the well diameter and well inclination of an umbrella-type bored pile hole detector according to claim 1, characterized in that: The measuring rod rotating block includes a first measuring rod rotating block, a second measuring rod rotating block, a third measuring rod rotating block, and a fourth measuring rod rotating block, which are four in total. Correspondingly, there are also four measuring rods connected thereto.

3. The downhole probe for detecting the well diameter and well inclination of an umbrella-type bored pile hole detector according to claim 1, characterized in that: The downhole probe for detecting the well diameter and well inclination of the umbrella-type bored pile hole detector further comprises a measuring rod fixing seat, and the lower end of the measuring rod can be folded and fixed to the measuring rod fixing seat.

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