An auxiliary stabilizing device and method for a panoramic borehole camera

Abstract

The application provides an auxiliary stabilizing device and method for panoramic drilling camera equipment, and relates to the field of surveying and mapping. The auxiliary stabilizing device for panoramic drilling camera equipment comprises a cylindrical box, a strip-shaped partition plate, a telescopic support, a first stepping motor, a data cable, a second stepping motor, a first auxiliary cable, a clamp, a first fixing ring, a second fixing ring, a third stepping motor, a second auxiliary cable, a pressure sensor, a connecting rod, a first switch and a second switch. The device helps the operator to maintain the automatic uniform speed of the drill bit and the data cable in the longitudinal direction during use, to sample and recover, to keep the drill bit always facing one direction in the transverse direction, and to avoid shaking and rotating, so as to ensure the accuracy of image data collection. Meanwhile, the bottom exploration structure is added, so that the equipment is prevented from being damaged due to obstacles, water and bottom touch in the drilling.

Description

Technical Field

[0001] This invention relates to the field of surveying and mapping, and in particular to an auxiliary stabilization device and method for panoramic drilling camera equipment. Background Technology

[0002] The study of rock structural planes is fundamental to analyzing the engineering properties of rock masses. The difficulty in directly observing and obtaining data on the internal structure of rock masses significantly limits the analysis and research of their internal characteristics.

[0003] To minimize disruption to information such as the orientation of in-situ rock structures, panoramic borehole cameras have been widely used in recent years in numerous fields, including the petroleum industry, geotechnical engineering, engineering geological exploration, concrete quality testing, mining engineering, tunnel excavation, and glacier research. These cameras cover a 360° view of the borehole wall, acquiring panoramic images that can be used not only to qualitatively reveal the actual conditions inside the borehole but also to quantitatively obtain information about the borehole wall.

[0004] Existing borehole camera equipment, due to its unreasonable design and the influence of human operation, cannot maintain a uniform descent sampling speed in the longitudinal direction and cannot always maintain the same direction in the transverse direction when measuring vertical medium and deep holes. This results in inaccurate image data acquisition and can easily affect the borehole camera results. Summary of the Invention

[0005] The problem this invention aims to solve is to address the shortcomings of the existing technology by providing an auxiliary stabilization device and method for panoramic drilling camera equipment. Without damaging the original equipment structure, this device assists the operator in maintaining the drill bit and data cable at an automatic, uniform speed during longitudinal descent for sampling and ascent for retrieval, and in lateral direction, keeping the drill bit always facing one direction without shaking or rotation, thereby ensuring the accuracy of image data acquisition. Simultaneously, the addition of a bottom-penetrating structure prevents damage to the equipment inside the borehole due to obstacles, water ingress, or contact with the bottom.

[0006] To achieve the above-mentioned objectives of the present invention, the technical solution adopted by the auxiliary stabilization device and method for panoramic drilling camera equipment of the present invention is as follows:

[0007] An auxiliary stabilization device for a panoramic drilling camera includes: a cylindrical housing, a strip partition, a telescopic bracket, a first stepper motor, a data cable, a second stepper motor, a first auxiliary cable, a clamp, a first fixing ring, a second fixing ring, a third stepper motor, a second auxiliary cable, a pressure sensor, a connecting rod, a first switch, and a second switch.

[0008] The cylindrical box is equipped with strip-shaped partitions on the upper part and three retractable supports on the lower part.

[0009] The first stepper motor is located at the middle of the upper part of the cylindrical box base plate and is connected to the drilling camera equipment via a data cable. The data cable passes through a circular hole in the cylindrical box base plate, which is located at the center of the cylindrical box base plate.

[0010] The second stepper motor is located in the middle of the upper part of the strip partition, and the second stepper motor is connected to the clamp through three first auxiliary cables.

[0011] The first fixing ring is fixedly and parallelly connected to the cylindrical box base plate via three connecting rods, and the second fixing ring is located directly below the first fixing ring. The cylindrical box base plate, the first fixing ring, and the second fixing ring each have three circular holes spaced 120° apart and positioned radially identically. Three first auxiliary cables pass sequentially through the three circular holes in the cylindrical box base plate, the three circular holes in the first fixing ring, and the three circular holes in the second fixing ring, ensuring a stable and parallel connection between the cylindrical box and the two fixing rings.

[0012] The clamp is connected to the drilling camera equipment used. The clamp consists of a superior arc half-tube and a inferior arc half-tube. A first auxiliary cable passing through a second fixing ring is connected and fixed to the superior arc half-tube. An adjusting screw is installed on the inferior arc half-tube, and the adjusting screw is fixedly connected to the drilling camera equipment.

[0013] The third stepper motor is mounted on the upper part of the cylindrical housing base plate and is connected to the pressure sensor via a second auxiliary cable. The second auxiliary cable passes through a circular hole in the cylindrical housing base plate, which is located directly below the third stepper motor.

[0014] The first switch and the second switch are respectively located on the upper sides of the strip partition.

[0015] As a further technical solution, the three first auxiliary cables and second auxiliary cables are all made of inelastic flexible steel wire rope material, and are marked with scale lines at fixed intervals.

[0016] As a further technical solution, the size of the superior and inferior arc half-pipes used in the clamp is not limited to one type of equipment.

[0017] As a further technical solution, in the initial state of this device, the clamp and the pressure sensor are at the same height to ensure that the lowering length of the drilling camera equipment is within a safe range.

[0018] A method for using an auxiliary stabilization device for a panoramic drilling camera includes the following steps:

[0019] Step 1: Select a tubular component of appropriate size, use clamps to connect the auxiliary stabilization device of the panoramic drilling camera to the drilling camera, tighten the screws to fix it, and turn on the drilling camera.

[0020] Step 2: Place the drilling camera inside the borehole, fix the telescopic bracket in the surrounding rock and soil, set the auxiliary stabilization device of the panoramic drilling camera directly above the borehole, and adjust the telescopic bracket to keep it horizontal.

[0021] Step 3: Press the I position of the first switch. The third stepper motor will lower the second auxiliary cable. When encountering an obstacle, entering water, or touching the bottom, the pressure feedback from the pressure sensor will change significantly. At this time, press the O position of the first switch. The third stepper motor will stop lowering immediately. Determine the length of the lowered auxiliary cable, i.e. the bottoming length, according to the scale line on the second auxiliary cable.

[0022] Step 4: Determine the safe length, then press the second position of the first switch to retract the pressure sensor and the second auxiliary cable;

[0023] The method for determining the safe length is as follows: Safe length = Bottom probing length - Original length of the device - Set safe distance.

[0024] Step 5: Start the drilling camera program, press the second switch to position I, and simultaneously lower the three first auxiliary cables and the equipment's data cable at a uniform speed, while simultaneously collecting data.

[0025] When the device is lowered to the safe length in step 6, press position II of the second switch to retract the three first auxiliary cables and the data cable, and shut down the drilling camera program.

[0026] Step 7: Retract the retractable bracket, select another hole, and repeat steps 2-7.

[0027] After all data acquisition is completed in step 8, the drilling camera equipment is turned off and the clamps are removed.

[0028] Compared with the prior art, the technical solution adopted in this invention has the following technical effects:

[0029] The auxiliary stabilization device of the panoramic drilling camera of the present invention has the characteristics of high stability and high measurement efficiency. It can effectively avoid the equipment from being damaged by obstacles inside the borehole. It is less affected by human operation. The fixed structure does not need to change the original equipment structure and is simple and convenient to assemble and disassemble. It can meet the assembly requirements of different models of equipment. By adjusting the length of the auxiliary cable and the telescopic bracket in the support structure, it is not limited by the size and depth of the hole. Attached Figure Description

[0030] Figure 1 This is a front view of an auxiliary stabilization device for a panoramic drilling camera according to an embodiment of the present invention;

[0031] Wherein: 1-Cylindrical housing; 3-Extendable bracket; 5-Data cable; 6-Drilling camera equipment; 8-First auxiliary cable; 9-Clamp; 10-First fixing ring; 11-Second fixing ring; 14-Pressure sensor;

[0032] Figure 2 This is a schematic diagram of the overall structure of an auxiliary stabilization device for a panoramic drilling camera according to an embodiment of the present invention;

[0033] 13 - Second auxiliary cable; 15 - Connecting rod;

[0034] Figure 3 This is a top view of the cylindrical box in an embodiment of the present invention;

[0035] Wherein 2 is a strip-shaped partition; 4 is the first stepper motor; 7 is the second stepper motor; 12 is the third stepper motor; 16 is the first switch; 17 is the second switch; Detailed Implementation

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0037] An auxiliary stabilization device for panoramic drilling camera equipment, such as Figures 1 to 3 As shown, it includes: a cylindrical box 1, a strip partition 2, a telescopic bracket 3, a first stepper motor 4, a data cable 5, a second stepper motor 7, a first auxiliary cable 8, a clamp 9, a first fixing ring 10, a second fixing ring 11, a third stepper motor 12, a second auxiliary cable 13, a pressure sensor 14, a connecting rod 15, a first switch 16, and a second switch 17.

[0038] The cylindrical box 1 is equipped with a strip-shaped partition 2 on the upper part and three telescopic supports 3 on the lower part. The telescopic supports 3 can be inserted into and fixed in the rock and soil around the borehole, making it easy to set up the device directly above the borehole.

[0039] The first stepper motor 4 is located at the middle of the upper part of the bottom plate of the cylindrical housing 1, and is connected to the drilling camera 6 via a data cable 5. The data cable 5 passes through a circular hole in the bottom plate of the cylindrical housing 1. This circular hole is located at the center of the bottom plate of the cylindrical housing 1.

[0040] The second stepper motor 7 is located in the middle of the upper part of the strip partition 2, and the second stepper motor 7 is connected to the clamp 9 through three first auxiliary cables 8.

[0041] The first fixing ring is fixedly and parallelly connected to the cylindrical box base plate via three connecting rods, and the second fixing ring is located directly below the first fixing ring. The cylindrical box base plate, the first fixing ring, and the second fixing ring each have three circular holes spaced 120° apart and positioned radially identically. Three first auxiliary cables pass sequentially through the three circular holes in the cylindrical box base plate, the three circular holes in the first fixing ring, and the three circular holes in the second fixing ring, ensuring a stable and parallel connection between the cylindrical box and the two fixing rings.

[0042] The clamp 9 is connected to the drilling camera equipment 6. The clamp 9 consists of a superior arc half-tube and a inferior arc half-tube. The first auxiliary cable passing through the second fixing ring is connected and fixed to the superior arc half-tube. The tightness of the cable is adjusted by the screw on the inferior arc half-tube. The screw for adjusting the tightness is fixedly connected to the drilling camera equipment to ensure the stability of the connection between the device and the drilling camera equipment. At the same time, it is easy to disassemble without changing the original equipment structure.

[0043] The data cable 5 controlled by the first stepper motor 4 and the three first auxiliary cables 8 controlled by the second stepper motor 7 are lowered and retrieved simultaneously to ensure the consistency of the step length frequency of the three first auxiliary cables, eliminate interference from the equipment data cable 5 during normal operation, and avoid the impact of force changes on the equipment data cable 5 on the stability of the overall structure.

[0044] The third stepper motor 12 is mounted on the upper part of the bottom plate of the cylindrical housing 1 and is connected to the pressure sensor 14 via a second auxiliary cable 13. The second auxiliary cable 13 passes through a circular hole in the bottom plate of the cylindrical housing 1, located directly below the third stepper motor 12. The stepper motor 12 determines whether it has encountered an obstacle, entered water, or reached the bottom based on pressure changes fed back by the pressure sensor 14, thereby controlling the raising and lowering of the second auxiliary cable 13. When the pressure on the pressure sensor 14 changes significantly, the stepper motor 12 immediately stops lowering and records the lowering length.

[0045] The first switch 16 and the second switch 17 are respectively located on both sides of the upper part of the strip partition 2. The first switch 16 controls the third stepper motor 12, and the second switch 17 simultaneously controls the first stepper motor 4 and the second stepper motor 7.

[0046] As a further technical solution, the three first auxiliary cables 8 and second auxiliary cables 13 are all made of inelastic flexible steel wire rope material, and are marked with scale lines every 10cm.

[0047] As a further technical solution, the clamp 9 is not limited to a single device in terms of the size of the superior and inferior arc half-pipes used. The selectability of component size and the detachability of the structure itself ensure the wide applicability and extensibility of the present invention.

[0048] As a further technical solution, in the initial state of this device, the clamp 9 and the pressure sensor 14 are at the same height to ensure that the lowering length of the drilling camera equipment 6 is within a safe range.

[0049] A method for using an auxiliary stabilization device for a panoramic drilling camera includes the following steps:

[0050] Step 1: Select a tubular component of appropriate size, use clamps to connect the auxiliary stabilization device of the panoramic drilling camera to the drilling camera, tighten the screws to fix it, and turn on the drilling camera.

[0051] Step 2: Place the drilling camera inside the borehole, fix the telescopic bracket in the surrounding rock and soil, set the auxiliary stabilization device of the panoramic drilling camera directly above the borehole, and adjust the telescopic bracket to keep it horizontal.

[0052] Step 3: Press the I position of the first switch. The third stepper motor will lower the second auxiliary cable. When encountering an obstacle, entering water, or touching the bottom, the pressure feedback from the pressure sensor will change significantly. At this time, press the O position of the first switch. The third stepper motor will stop lowering immediately. Determine the length of the lowered auxiliary cable, i.e. the bottoming length, according to the scale line on the second auxiliary cable.

[0053] Step 4: Determine the safe length, then press the second position of the first switch to retract the pressure sensor and the second auxiliary cable;

[0054] The above method for determining the safe length is as follows: Safe length = Bottom probing length - Original length of the device 0.5m - Set safe distance 0.3m.

[0055] Step 5: Start the drilling camera program, press the second switch to position I, and simultaneously lower the three first auxiliary cables and the equipment's data cable at a uniform speed, while simultaneously collecting data.

[0056] When the device is lowered to the safe length in step 6, press position II of the second switch to retract the three first auxiliary cables and the data cable, and shut down the drilling camera program.

[0057] Step 7: Retract the retractable bracket, select another hole, and repeat steps 2-7.

[0058] After all data acquisition is completed in step 8, the drilling camera equipment is turned off and the clamps are removed.

Claims

1. A method for using an auxiliary stabilization device for a panoramic drilling camera, based on an auxiliary stabilization device for a panoramic drilling camera, comprising a cylindrical housing, a strip partition, a telescopic bracket, a first stepper motor, a data cable, a second stepper motor, a first auxiliary cable, a clamp, a first fixing ring, a second fixing ring, a third stepper motor, a second auxiliary cable, a pressure sensor, a connecting rod, a first switch, and a second switch; the cylindrical housing has a strip partition on its upper part and three telescopic brackets on its lower part; the first stepper motor is located at the middle of the upper part of the bottom plate of the cylindrical housing and is connected to the drilling camera used via a data cable, wherein... The data cable passes through a circular hole in the bottom plate of the cylindrical enclosure; the second stepper motor is positioned in the middle of the upper part of the strip-shaped partition, and is connected to a clamp via three first auxiliary cables; the first fixing ring is fixedly and parallelly connected to the bottom plate of the cylindrical enclosure via three connecting rods, and the second fixing ring is located directly below the first fixing ring. The bottom plate of the cylindrical enclosure, the first fixing ring, and the second fixing ring each have three circular holes spaced 120° apart and positioned radially identically. The three first auxiliary cables pass sequentially through the three circular holes in the bottom plate of the cylindrical enclosure, the three circular holes in the first fixing ring, and the three circular holes in the second fixing ring. The method includes a hole that allows the cylindrical housing and two fixing rings to be stably connected in parallel. The clamp is connected to the drilling camera equipment used. The clamp consists of a superior arc half-tube and a inferior arc half-tube. A first auxiliary cable passing through the second fixing ring is connected and fixed to the superior arc half-tube. An adjusting screw is installed on the inferior arc half-tube and is fixedly connected to the drilling camera equipment. The third stepper motor is located on the upper part of the cylindrical housing's bottom plate and is connected to a pressure sensor via a second auxiliary cable. The second auxiliary cable passes through a circular hole in the cylindrical housing's bottom plate, which is located directly below the third stepper motor. The first switch and the second switch are respectively located on both sides of the upper part of the strip-shaped partition. The method specifically includes the following steps: Step 1: Select a tubular component of appropriate size, use clamps to connect the auxiliary stabilization device of the panoramic drilling camera to the drilling camera, tighten the screws to fix it, and turn on the drilling camera. Step 2: Place the drilling camera inside the borehole, fix the telescopic bracket in the surrounding rock and soil, set the auxiliary stabilization device of the panoramic drilling camera directly above the borehole, and adjust the telescopic bracket to keep it horizontal. Step 3: Press the I position of the first switch. The third stepper motor will lower the second auxiliary cable. When encountering an obstacle, entering water, or touching the bottom, the pressure feedback from the pressure sensor will change significantly. At this time, press the O position of the first switch. The third stepper motor will stop lowering immediately. Determine the length of the lowered auxiliary cable, i.e. the bottoming length, according to the scale line on the second auxiliary cable. Step 4: Determine the safe length, then press the second position of the first switch to retract the pressure sensor and the second auxiliary cable; Step 5: Start the drilling camera program, press the second switch to position I, and simultaneously lower the three first auxiliary cables and the equipment's data cable at a uniform speed, while simultaneously collecting data; Step 6: When the device is lowered to the safe length, press the second switch to position II to retract the three first auxiliary cables and the data cable, and shut down the drilling camera program. Step 7: Retract the retractable bracket, select another hole, and repeat steps 2-7. Step 8: After all data acquisition is completed, turn off the drilling camera equipment and remove the clamps; The method for determining the safe length is as follows: Safe length = Bottom probing length - Original length of the device - Set safe distance.

2. The method of using the auxiliary stabilization device for a panoramic drilling camera according to claim 1, characterized in that, The circular hole in the bottom plate of the cylindrical box is located at the center of the bottom plate.

3. The method of using the auxiliary stabilization device for a panoramic drilling camera according to claim 1, characterized in that, The three auxiliary cables, namely the first and second auxiliary cables, are all made of inelastic flexible steel wire rope material, and are marked with scale lines at fixed intervals.

4. The method of using the auxiliary stabilization device for a panoramic drilling camera according to claim 1, characterized in that, The clamps used are not limited to a single type of equipment in terms of the size of the superior and inferior arc half-pipes.

5. The method of using the auxiliary stabilization device for a panoramic drilling camera according to claim 1, characterized in that, In the initial state of this device, the clamp and the pressure sensor are at the same height to ensure that the lowering length of the drilling camera equipment is within a safe range.

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