Mining retreating type drilling imager and using method thereof

Abstract

The invention relates to the field of drilling imaging, and discloses a mining retreating type drilling imager and a using method thereof.The drilling imager comprises a host, a probe in communication connection with the host through a cable, a probe protection cover, a probe limiting stopper and a take-up device; the probe limiter is in threaded connection with the tail part of the probe and is used for enabling the probe to be in a central position in a drill hole, and a cable connected with the probe penetrates through the probe limiter; the probe protection cover comprises a buffer cover, a dirt collecting net arranged at the bottom of the buffer cover and a dirt cleaning claw arranged at the other end of the dirt collecting net, the dirt cleaning claw is in contact connection with the inner wall of the drill hole, and the buffer cover is arranged at the head of the probe in a sleeving mode and used for protecting the probe when the probe is pushed into the drill hole; the take-up device is used for taking up the cable and controlling the cable to pull the probe out of the drill hole at a constant speed. According to the invention, drill hole cleaning and probe lens protection in the probe hole entering process are realized, and acquisition imaging is quitted at a constant speed in the hole withdrawing process, and the device has the advantages of high drill hole imaging definition and high measurement accuracy.

Description

Technical Field

[0001] The invention relates to the field of borehole imaging, and in particular to a mining-use backward borehole imaging instrument and a use method thereof. Background Art

[0002] The mining borehole imaging instrument is a device that can visually observe various underground structures. It can also reveal the development and deformation of the surrounding rock joints, faults and cracks in the coal seam tunnels, predict the development trend of underground disasters such as tunnel roof delamination and collapse, tunnel instability, and provide a basis for tunnel support and roof management.

[0003] At present, the main working steps of the borehole imager are: first, drill the hole according to the construction requirements; then connect the probe, depth counter and host through the signal line; then turn on the host power and insert the borehole imager probe into the borehole; finally, slowly push the probe into the borehole and observe the rock formations at different depths of the hole on the host. The main problems of the borehole imager in the prior art are:

[0004] 1. The probe rod is mostly advanced manually, and the advancement speed is unstable, which can easily lead to incoherent imaging;

[0005] 2. The probe cannot be centered, and it is easy for the probe to touch the hole wall during advancement, causing damage to the probe;

[0006] 3. During the advancement of the probe, the edge of the probe is easily accumulated with rock coal powder or water stains in the borehole, resulting in blurred lens imaging and seriously affecting the viewing efficiency.

[0007] At present, some scholars have also conducted research on mining borehole imaging instruments, such as:

[0008] Patent No. CN202023037252.1 proposes a probe anti-fouling device for a mining borehole imager, which cleans the lens by a motor-driven cleaning claw. However, its structure is complex and requires motor drive, and the cleaning effect of the reciprocating cleaning component will decrease after multiple cleanings;

[0009] Patent No. CN201911424732.2 proposes an automatic rod-advancing drilling imaging instrument for mining. Although it can realize automatic advancement of the probe rod and advance the rod at a uniform speed, the rod-advancing angle is difficult to adjust and the probe is easily damaged when the motor-driven probe is stuck.

[0010] Based on this, the present invention provides a mining-use retractable borehole imager with a simple structure, high borehole imaging clarity and high measurement accuracy, which can clean the borehole and protect the lens of the probe during the probe entering the hole, and exit the collection and imaging at a uniform speed during the hole retreating process. Summary of the invention

[0011] The present invention aims to solve the technical problems existing in the prior art. To this end, the present invention provides a mining-use retractable borehole imaging instrument with simple structure, high borehole imaging clarity and high measurement accuracy, which can clean the borehole and protect the lens of the probe during the probe entering the hole, and uniformly exit the acquisition and imaging during the retracting process.

[0012] The technical solution adopted by the present invention to solve its technical problem is:

[0013] In a first aspect, a mining backward-type borehole imaging instrument is provided, comprising a main unit, a probe connected to the main unit for communication via a cable, a probe protection cover, a probe stopper and a wire take-up device; the probe stopper is screwed to the tail of the probe, and is used to center the probe in the borehole, and the cable connecting the probe passes through the probe stopper; the probe protection cover comprises a buffer cover, a dirt collecting net arranged at the bottom of the buffer cover, and a dirt cleaning claw arranged at the other end of the dirt collecting net, the dirt cleaning claw contacts the inner wall of the borehole, the buffer cover is sleeved on the head of the probe, and is used to protect the probe when the probe is pushed into the borehole, and when the probe retreats, the dirt cleaning claw grabs the inner wall of the borehole to separate the probe protection cover from the probe; the wire take-up device is used to reel in the cable, and control the cable to pull the probe out of the borehole at a uniform speed; after the probe is separated from the probe protection cover, real-time imaging data in the borehole is collected until the probe completely withdraws from the borehole.

[0014] In some optional embodiments, the host is also provided with a cable meter module, which includes a meter wheel and a pressure wheel arranged on the side of the host, and a meter module arranged in the host, the rotating shaft of the meter wheel is connected to the meter module, and the meter module is used to record the number of rotations of the meter wheel and convert the number of rotations into the length of the cable.

[0015] In some optional embodiments, guide wheels are further provided on the side of the main machine at the line inlet end of the pressure wheel and the line outlet end of the meter wheel.

[0016] In some optional embodiments, the top of the buffer cover is set to be hemispherical and made of foam material, and the bottom is provided with a countersunk hole that is sleeved with the probe.

[0017] In some optional embodiments, the dirt collecting net is woven from elastic steel wires into a trumpet shape, and one end of the radial steel wires away from the buffer cover protrudes to form the dirt cleaning claw.

[0018] In some optional embodiments, the outer wall of the probe stopper is provided with two groups of limit rollers near its two ends, each group of limit rollers includes two limit rollers arranged on both sides of the probe stopper, and the two groups of limit rollers are staggered at 90°.

[0019] In some optional embodiments, the probe limiter has a receiving groove, each limiting roller is hinged in the receiving groove through a bracket, and a torsion spring is provided on the hinge shaft.

[0020] In some optional embodiments, the cable receiver is a cable receiver with a built-in small motor, the cable receiver is electrically connected to a host, and the host controls the operation of the cable receiver, the cable is wound around the cable receiver, and the cable is a flexible tensile cable.

[0021] In some optional embodiments, a probe rod is further included, which is formed by screwing a plurality of short rods and is used to push the probe into the borehole.

[0022] In a second aspect, a method for using a mining-use backward drilling imager is provided. The mining-use backward drilling imager is used according to the following steps:

[0023] S1, assemble the borehole imager, put the probe protection cover on the head of the probe, and use the probe rod to insert the probe from the hole of the borehole. During the rod insertion process, the host records the depth of the probe entering the borehole in real time;

[0024] S2, when the probe is sent to the bottom of the borehole, the take-up device is started, and the probe is pulled out at a uniform speed under the action of the cable. At this time, the probe protection cover is separated from the probe and remains at the bottom of the hole. The probe starts to collect imaging data in the hole in real time under the action of the limiter. The host fits the imaging data with the hole depth until the probe is completely withdrawn from the borehole;

[0025] S3, the borehole data collection work is completed and the borehole imager is put away.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention utilizes the probe protection cover to protect the probe, so that the probe lens can be effectively protected during the rod advancement process, and the probe protection cover can also be used to clean the hole, providing a relatively clean environment for the probe retreat imaging data collection; the drill bit is withdrawn at a uniform speed using a wire take-up device, and the imaging is continuous and high-quality, ensuring the clarity of the drilling imaging and the accuracy of the measurement, and the drill bit can be kept in a centered position under the action of the probe limiter, preventing the drill bit from touching the hole wall and causing damage to the probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0028] Figure 1 It is a structural schematic diagram of a mining backward drilling imager provided by the present invention;

[0029] Figure 2 It is a structural diagram of the probe protection cover provided by the present invention;

[0030] Figure 3 is a structural diagram of a probe stopper provided by the present invention in a preferred embodiment;

[0031] Figure 4 is a structural diagram of another preferred embodiment of the probe stopper provided by the present invention;

[0032] Figure 5 yes Figure 1 Side view of the meter wheel, pressure wheel and guide wheel provided on the main machine.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1—main unit, 1.1—meter wheel, 1.2—pressure wheel, 1.3—guide wheel, 2—probe, 3—probe protection cover, 3.1—buffer cover, 3.1.1—sink hole, 3.2—dirt collection net, 3.2.1—dirt cleaning claw, 4—probe limiter, 4.0—receiving slot, 4.1—limit roller, 4.2—bracket, 4.3—torsion spring, 5—receiver, 6—cable, 7—probe rod. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "install", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Embodiment 1

[0040] As attached Figure 1 As shown, this embodiment provides a mining backward drilling imaging instrument, including a main unit 1, a probe 2, a probe protection cover 3, a probe stopper 4 and a wire take-up device 5, wherein:

[0041] The host 1 is connected to the probe 2 via a cable 6 , and an image acquisition module and a battery module are integrated in the host 1 . The image acquisition module is connected to the probe 2 via the cable 6 , and the battery module supplies power to the host.

[0042] The probe stopper 4 is screwed to the tail of the probe 3 to make the probe be centered in the borehole, and the cable 6 connecting the probe passes through the probe stopper 4; preferably, as shown in the attached Figure 3 As shown, the outer wall of the probe stopper 4 is provided with two groups of limit rollers near both ends thereof, each group of limit rollers includes two limit rollers 4.1 provided on both sides of the probe stopper, and the two groups of limit rollers are arranged at 90° offset. This design utilizes the rolling contact between the limit rollers and the inner wall of the borehole, so that the probe is relatively smooth and has little resistance during the process of entering and exiting the borehole. At the same time, the probe stopper can ensure that the probe is always kept in the center position in the borehole during the process of entering and exiting the borehole, and can effectively prevent the probe from colliding with the inner wall of the borehole and scratching and damaging the probe.

[0043] As attached Figure 2As shown, the probe protection cover 3 includes a buffer cover 3.1, a dirt collection net 3.2 arranged at the bottom of the buffer cover, and a dirt cleaning claw 3.2.1 arranged at the other end of the dirt collection net. The buffer cover 3.2 is mounted on the head of the probe 2 to protect the probe when the probe is pushed into the borehole. The dirt cleaning claw 3.2.1 contacts the inner wall of the borehole. When the probe retreats, the dirt cleaning claw grabs the inner wall of the borehole to separate the probe protection cover from the probe. After the probe is separated from the probe protection cover, real-time imaging data in the borehole is collected until the probe completely withdraws from the borehole. Preferably, the top of the buffer cover 3.1 is set to be hemispherical and made of foam material, and the bottom thereof is provided with a countersunk hole 3.1.1 that is sleeved with the probe 2; the dirt collection net 3.2 is a trumpet-shaped woven from elastic steel wire, and its radial steel wire protrudes from one end away from the buffer cover to form the dirt cleaning claw 3.2.1. The probe protection cover designed in this embodiment can use the buffer cover to form a protection for the lens of the probe, which can effectively prevent the rock coal powder or water stains in the borehole from accumulating on the probe during the process of the probe entering the hole, thereby affecting the imaging effect; and the dirt collecting net and the dirt cleaning claws formed by it can use the dirt collecting claws to clean up foreign matter attached to the inner wall of the borehole and collect them in the dirt collecting net during the process of the drill bit entering the hole, and push them to the bottom of the hole together, thereby cleaning up a relatively clean imaging environment for the probe when it is withdrawn from the hole.

[0044] As attached Figure 1 As shown, the cable take-up device 5 is used to reel in the cable 6, and control the cable to pull the probe out of the borehole at a uniform speed. Preferably, the cable take-up device 5 is a cable take-up device with a built-in small motor, the cable take-up device 5 is electrically connected to the host 1, and the host controls the cable take-up device to work, the cable 6 is wound on the cable take-up device 5, and the cable 6 is a flexible tensile cable.

[0045] As attached Figure 1 and attached Figure 5 As shown, the host 1 is also provided with a cable meter module, which includes a meter wheel 1.1 and a pressure wheel 1.2 arranged on the side of the host 1, and a meter module arranged in the host 1. The rotating shaft of the meter wheel 1.1 is connected to the meter module, and the meter module is used to record the number of rotations of the meter wheel 1.1 and convert the number of rotations into the length of the cable. Preferably, the side of the host 1 is also provided with a guide wheel 1.3 at the inlet end of the pressure wheel 1.2 and the outlet end of the meter wheel 1.1.

[0046] As attached Figure 1 As shown, the mining backward-type borehole imaging instrument further includes a probe rod 7, which is formed by screwing a plurality of short rods and is used to push the probe into the borehole.

[0047] The method of using the mining backward drilling imager is as follows:

[0048] S1, assemble the borehole imager, put the probe protection cover on the head of the probe, and use the probe rod to send the probe into the borehole. During the sending process, the host records the depth of the probe entering the borehole in real time;

[0049] S2, when the probe is sent to the bottom of the borehole, the take-up device is started, and the probe is pulled out at a uniform speed under the action of the cable. At this time, the probe protection cover is separated from the probe and remains at the bottom of the hole. The probe starts to collect imaging data in the hole in real time under the action of the limiter. The host fits the imaging data with the hole depth until the probe is completely withdrawn from the borehole;

[0050] S3, the borehole data collection work is completed and the borehole imager is put away.

[0051] Embodiment 2

[0052] The difference between this embodiment and the first embodiment is only the probe stopper, as shown in the attached Figure 4 As shown, the probe stopper 4 of this embodiment has a receiving groove 4.0, each limiting roller 4.1 is hinged in the receiving groove 4.0 through a bracket 4.2, and a torsion spring 4.3 is provided on the hinge shaft. This probe stopper can meet the requirements of drilling holes of various diameters and is highly applicable.

[0053] It is worth noting that the probe rod and the probe stopper can be detachably connected (such as screwed) or disconnected. The advantage of the disconnected state is that the probe rod can be pulled out after the probe is sent to the bottom of the hole.

[0054] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, 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 mining backward drilling imager, comprising a host and a probe connected to the host by a cable; characterized in that: It also includes a probe protection cover, a probe stopper and a wire take-up device, wherein: The probe stopper is screwed to the tail of the probe and is used to keep the probe in a central position in the borehole, and the cable connecting the probe passes through the probe stopper; The probe protection cover includes a buffer cover, a dirt collection net arranged at the bottom of the buffer cover, and a dirt cleaning claw arranged at the other end of the dirt collection net, the dirt cleaning claw contacts the inner wall of the borehole, the buffer cover is sleeved on the head of the probe, and is used to protect the probe when the probe is pushed into the borehole, and when the probe retreats, the dirt cleaning claw grabs the inner wall of the borehole to separate the probe protection cover from the probe; The cable take-up device is used to reel in the cable and control the cable to pull the probe out of the borehole at a constant speed; After the probe is separated from the probe protection cover, the imaging data in the borehole starts to be collected in real time until the probe is completely withdrawn from the borehole.

2. The mining backward drilling imager according to claim 1, characterized in that: The host is also provided with a cable meter module, which includes a meter wheel and a pressure wheel arranged on the side of the host, and a meter module arranged in the host. The rotating shaft of the meter wheel is connected to the meter module. The meter module is used to record the number of rotations of the meter wheel and convert the number of rotations into the length of the cable.

3. The mining backward drilling imager according to claim 2, characterized in that: The side of the main machine is also provided with guide wheels at the line inlet end of the pressing wheel and the line outlet end of the meter wheel.

4. The mining backward drilling imager according to claim 1, characterized in that: The top of the buffer cover is set to be hemispherical and made of foam material, and the bottom of the buffer cover is provided with a countersunk hole sleeved with the probe.

5. The mining backward drilling imager according to claim 1, characterized in that: The dirt collecting net is woven from elastic steel wires into a trumpet shape, and one end of the radial steel wires away from the buffer cover protrudes to form the dirt cleaning claw.

6. The mining backward drilling imager according to claim 1, characterized in that: The outer wall of the probe stopper is provided with two groups of limit rollers near both ends thereof, each group of limit rollers includes two limit rollers arranged on both sides of the probe stopper, and the two groups of limit rollers are arranged with a 90° offset.

7. The mining backward drilling imager according to claim 6, characterized in that: The probe limiter has a receiving groove, each limiting roller is hinged in the receiving groove through a bracket, and a torsion spring is arranged on the hinge shaft.

8. The mining backward drilling imager according to claim 1, characterized in that: The wire take-up device is a wire take-up device with a built-in small motor. The wire take-up device is connected to a host computer through an electrical signal, and the host computer controls the wire take-up device to work. The cable is wound around the wire take-up device, and the cable is a flexible tensile-resistant cable.

9. The mining backward drilling imager according to any one of claims 1 to 8, characterized in that: It also comprises a probe rod, which is formed by screwing a plurality of short rods and is used for pushing the probe into the borehole.

10. A method for using a mining backward drilling imaging instrument, characterized in that: Use the mining-use backward drilling imaging device according to claim 9 as follows: S1, assemble the borehole imager, put the probe protection cover on the head of the probe, and use the probe rod to send the probe into the borehole. During the sending process, the host records the depth of the probe entering the borehole in real time; S2, when the probe is sent to the bottom of the borehole, the take-up device is started, and the probe is pulled out at a uniform speed under the action of the cable. At this time, the probe protection cover is separated from the probe and remains at the bottom of the hole. The probe starts to collect imaging data in the hole in real time under the action of the limiter. The host fits the imaging data with the hole depth until the probe is completely withdrawn from the borehole; S3, the borehole data collection work is completed and the borehole imager is put away.

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