CN216406803U

CN216406803U - Horizontal directional drilling engineering geological prospecting three-dimensional downthehole TV image device

Info

Publication number: CN216406803U
Application number: CN202121579309.2U
Authority: CN
Inventors: 张强; 闫雪峰; 朴昇昊; 寇桓嘉; 王强
Original assignee: China University of Geosciences
Current assignee: China University of Geosciences
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-04-29
Anticipated expiration: 2031-07-12

Abstract

The utility model discloses a television imaging device in a three-dimensional hole for geological exploration of horizontal directional drilling engineering, which comprises an outer pipe, an adapter, a sliding block, a video device and a slide block, wherein the outer pipe is coaxially connected with the adapter, the adapter is used for connecting the outer pipe with a drill rod, the drill rod pushes the device to move in a horizontal drilling hole, the sliding block and the video device are both arranged in the outer pipe, the sliding block is connected with the video device through a cross-axle universal joint, a plurality of elastic centralizers are uniformly distributed on the periphery of the video device, when a drilling machine is pushed, the elastic centralizers are compressed in the outer pipe, when the device reaches the bottom of the hole, a slurry pump is started, slurry pushes the sliding block to enable the video device to extend out of the outer pipe, the elastic centralizers are unfolded and tightly abut against the wall of the drilling hole, and the slide block is fixedly arranged in the outer pipe to prevent the sliding block from sliding out of the outer pipe. The utility model can realize the camera shooting and video storage in the horizontal drilling hole, can ensure the safety and smooth operation of the long-distance exploration process, ensures the imaging quality and meets the engineering exploration requirement.

Description

Horizontal directional drilling engineering geological prospecting three-dimensional downthehole TV image device

Technical Field

The utility model relates to the field of engineering investigation, in particular to a television imaging device in a three-dimensional hole for geological investigation of horizontal directional drilling engineering.

Background

At present, with the increase of long-distance large-buried-depth tunnel engineering, the traditional vertical drilling exploration method meets great challenges. If the traditional vertical drilling exploration method is still used, many problems can be faced, such as the obtained stratum information can not meet the requirements of engineering design, the effective drilling length is too low, the drilling holes are too deep, the drilling number is too large, the manufacturing cost is too high, and the limitation by the terrain is large.

The horizontal directional drilling technology adopts equipment with guiding and direction controlling functions to lay pipelines for water supply, electric power, telecommunication, natural gas, coal gas, petroleum and the like under the condition of not excavating the ground surface, and the construction method is mature and has the advantages of high precision, low manufacturing cost and the like. The horizontal directional drilling machine is used for drilling and surveying along the extending direction of the tunnel, the method has the advantages of good terrain adaptability, easy acquisition of geological parameters, more information, long effective drilling length and the like, can solve the problems existing in the traditional method, is a good alternative technology, and has wide application prospect.

In engineering investigation, most of the rock cores are required to obtain accurate geological data. Under the condition of complex geological conditions, the obtained rock core has poor outward quality, so that engineering personnel cannot obtain accurate information such as stratum lithology, karst development degree, rock structural surface development condition, fracture zone distribution position and the like according to the rock core. To solve such problems, some borehole imaging apparatuses including a forward-looking borehole imaging apparatus, a digital optical panoramic photographing apparatus, and the like have appeared on the market. There are also some protection devices for the television inside the well in order to protect the equipment.

The horizontal drilling hole wall is easy to fall, rock powder and rock debris in the hole are accumulated, the hole wall is very rough, and the drilling track is not a straight line generally. A common in-hole television adopts optical fibers and cables to transmit signals, wires naturally droop in a vertical drilling hole, but threading in a drill rod of a horizontal directional drilling machine is difficult, and the wires are arranged outside the drill rod and are easily wound by the drill rod or damaged by friction with the wall of the hole, so that the signals cannot be transmitted out of the hole in real time. In the advancing process of the equipment, the common in-hole television is very easy to be blocked or damaged, and the normal work can not be carried out. At the crooked hole section of drilling or the hole section that the pore wall is coarse, equipment and pore wall can take place the auto-lock, perhaps block on the rock is protruding, at this moment impels equipment by force, can cause the damage to equipment. In the process of pushing the drill rod, the drill rod needs to be rotated in order to overcome the friction force of the hole wall, and if the camera shooting equipment rotates together, the motion blur of images can be caused, and the imaging quality is greatly influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a three-dimensional in-hole television imaging device for horizontal directional drilling engineering geological exploration, which can implement image pickup and video storage in a horizontal borehole, ensure the safety and smooth performance of a long-distance exploration process, ensure imaging quality, and meet the requirements of engineering exploration.

The embodiment of the utility model provides a television imaging device in a three-dimensional hole for geological exploration of horizontal directional drilling engineering, which comprises an outer pipe, an adapter, a sliding block, a video recording device and a sliding block, the outer pipe is coaxially connected with the adapter, the adapter is used for connecting the outer pipe with a drill rod, the drill rod pushes the device to move in a horizontal drilling hole, the sliding block and the video equipment are both arranged in the outer pipe, the sliding block is connected with the video equipment through a cross-axle universal joint, a plurality of elastic centralizers are uniformly distributed on the periphery of the video equipment, when the drilling machine is pushed, the elastic centralizer is compressed in the outer pipe, when the device reaches the bottom of the hole, the slurry pump is started, slurry pushes the sliding block to enable the video equipment to stretch out of the outer pipe, the elastic centralizer is unfolded and tightly propped against the wall of the drilling hole, and the anti-sliding block is fixedly arranged in the outer pipe to prevent the sliding block from sliding out of the outer pipe.

Further, the outer diameter of the sliding block is smaller than the inner diameter of the outer pipe, so that a gap is formed between the sliding block and the outer pipe, and when slurry enters the gap between the sliding block and the outer pipe, the sliding block and the outer pipe are fully lubricated.

Further, the video recording equipment comprises a camera, a video recorder and a control circuit board, a battery and a hard disk, wherein the camera is electrically connected with the video recorder and the control circuit board, the battery is electrically connected with the video recorder and the control circuit board, and the hard disk is detachably connected to the video recording equipment.

Further, an illuminating device is arranged in the camera, and the illuminating device is arranged in the camera.

Further, a windshield wiper is arranged on the camera and fixed at the front end of the camera.

Further, a heating film is arranged on the camera and is pasted on the camera.

Further, the camera is a fisheye lens, an ultra-wide-angle panoramic lens or a binocular lens.

Further, the elastic centralizer is an arc-shaped metal elastic sheet.

Compared with the prior art, the utility model has the following beneficial effects:

after the comprehensive drilling is completed, the device is installed at the front end of a drill rod, the video recording function is started, the device is slowly pushed into a hole by utilizing the pushing function of a drilling machine, when the device reaches the bottom of the hole, a slurry pump is started to push a video recording device out of an outer pipe, an elastic centralizer is unfolded to back drag the device, the camera device shoots and records the characteristics in the hole, a hard disk is taken out, video data are processed and analyzed, and the shooting and video storage in a horizontal drilling hole can be realized.

In the drilling rod propulsion process, the outer tube is responsible for protecting video equipment in the propulsion process, prevent that the piece falls in rough cliff detritus and the drilling and causes the damage to it, in the back-dragging process, the elasticity centralizer of expansion and the inner wall in close contact with of drilling, when the drilling rod is rotatory, there is great frictional force in elasticity centralizer and the drilling inner wall, because the effect of the shaft type universal joint of cross, can realize that the drilling rod is rotatory, this imaging device irrotational, realize drilling rod and video equipment transfer, thereby can guarantee the safety and the going on smoothly of long distance reconnaissance process, guarantee imaging quality, satisfy engineering reconnaissance requirement.

Drawings

FIG. 1 is a schematic longitudinal cross-sectional view of a televiewer survey apparatus for use in a horizontally oriented borehole of the present invention;

FIG. 2 is a schematic view of the horizontal directional borehole televiewer apparatus of the present invention operating while being towed back within the borehole;

fig. 3 is a schematic perspective view of an elastic centralizer of the tv surveying apparatus in a horizontal directional borehole according to the present invention.

Reference numerals: 1-camera 1, 2-video recorder and control circuit board, 3-hard disk, 4-outer tube, 5-elastic centralizer, 6-block, 7-battery, 8-universal joint, 9-slide block, 10-adapter, 11-drill rod, 12-horizontal drilling hole, X-drill rod₁Direction of flow of drilling fluid, X₂-device drag-back direction.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 and fig. 2, the utility model provides a television imaging device for geological exploration of horizontal directional drilling engineering in a three-dimensional hole, which comprises an outer pipe 4, an adapter 10, a slide block 9, video equipment and a slide-resistant block 6, wherein the outer pipe 4 is coaxially connected with the adapter 10, the adapter is used for connecting the outer pipe with a drill rod and enabling the device to move back and forth, the slide block 9 and the video equipment are both arranged in the outer pipe 4, the slide block 9 is connected with the video equipment through a universal joint 8, a plurality of elastic centralizers 5 are uniformly distributed around the video equipment, when a drilling machine is propelled, the elastic centralizers 5 are compressed in the outer pipe, when the device reaches the bottom of the hole, a slurry pump is started, slurry pushes the slide block to enable the video equipment to extend out of the outer pipe, the elastic centralizers 5 are unfolded and tightly pressed on the wall of the drilling hole, the slide-resistant block 6 is fixedly arranged in the outer pipe, the sliding block is prevented from sliding out of the outer pipe.

In the technical scheme, the outer pipe 4 is coaxially connected with the adapter 10, the sliding block 9 is connected with the video equipment through the universal joint 8, and when the drill rod 11 rotates, the device does not rotate, so that the effect of transfer of the drill rod 11 and the video equipment is realized, and the imaging quality is ensured. When the device is not dragged back, the elastic centralizer 5 is in a compressed state in the outer tube 4, when the device reaches the bottom of a hole, a slurry pump is started to push the video equipment out of the outer tube 4, and the elastic centralizer 5 is unfolded to start dragging back the device. The inside slider 6 that hinders that is provided with of outer tube 4 prevents that slider 9 from deviating from outer tube 4, and the stroke of slider 9 is adapter 10 and hinders between the slider 6.

This is novel creeps into the completion back comprehensively, and the drilling tool is pulled back, dismantles drilling rod 11 and creeps into the drill bit comprehensively, passes through adapter 10 with this device and connects at drilling rod 11 front end, opens the function of making a video recording, pushes away this device in the drill hole.

The drill rod 11 is lowered in sequence, and the device is slowly pushed forward until the bottom of the drilled hole.

The device reaches the bottom of the hole, a slurry pump is started to push the video equipment out of the outer pipe 4, and the elastic centralizer 5 is opened and clings to the inner wall of the hole. And recording in the back dragging process. Take this device out from drilling, dismantle, take out hard disk 3 and carry out the processing and the analysis of video data, this is novel can realize making a video recording and video storage in the horizontal drilling, guarantees the safety of long distance reconnaissance process and goes on smoothly, guarantees imaging quality, satisfies engineering reconnaissance requirement. Specifically, as shown in fig. 3, the elastic centralizer is an arc-shaped metal elastic sheet. By adopting the technical scheme, when the tractor is dragged back, the unfolded elastic centralizer 5 is tightly contacted with the inner wall of the drill hole, and the circular arc shape can effectively reduce the friction force.

According to the technical scheme, the outer diameter of the sliding block is preferably smaller than the inner diameter of the outer pipe, and by adopting the technical scheme, when the device reaches the bottom of a hole and is ready to be dragged back, drilling liquid from the interior of the drill rod 11 can flow out from the space between the outer pipe 4 and the sliding block 9 to lubricate the space between the outer pipe 4 and the hole wall, so that the drag back resistance is reduced.

Wherein, video recording equipment includes camera 1, video recorder and control circuit board 2, hard disk 3, battery 7, camera 1 sets up video recorder and 2 front ends of control circuit board, 3 detachable connections of hard disk are in on the video recording equipment, battery 7 sets firmly in the video recording equipment.

Preferably, the camera 1 is a fisheye lens, an ultra-wide-angle panoramic lens or a binocular lens, and by adopting the technical scheme, the three-dimensional panoramic shooting of the drilled hole can be realized, and an ordinary forward-looking camera can be adopted to process an image or realize the three-dimensional reconstruction of the inner wall of the drilled hole by using a computer vision means.

Preferably, the video recording device of the present invention should be a rigid whole body, and the whole body has a waterproof function. The operating energy of the video recording device comes from a battery 7 arranged at the rear. The shot video data are stored in the hard disk 3, and the hard disk 3 can be directly taken out from the video equipment upwards and replaced in real time.

Preferably, the camera is provided with an illuminating device, and the illuminating device is arranged in the camera.

Preferably, the camera is provided with the windshield wiper, the windshield wiper is fixed the camera front end, adopts this kind of technical scheme, when camera 1 is covered by rock powder mud etc. when, can clean the camera through the windshield wiper, guarantees that camera 1 is clean.

Preferably, the camera is provided with a heating pad pasting, the heating pad pasting is in on the camera, adopt this kind of technical scheme, camera 1 shoots the drilling inner wall image within the preceding view, when camera 1 hazes, can dispel the fog through the heating film heating on the camera 1.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a TV image device in three-dimensional downthehole of engineering geological survey is bored to horizontal directional drilling, its characterized in that includes outer tube, adapter, slider, video recording equipment, anti-skidding piece, the outer tube with adapter coaxial coupling, adapter are used for being connected outer tube and drilling rod, and the drilling rod promotes the device and moves in horizontal drilling, slider and video recording equipment all set up in the outer tube, and the slider with video recording equipment passes through the universal joint of cross axle type and connects, video recording equipment evenly distributed has a plurality of elasticity centralizer all around, when the rig impels, elasticity centralizer compression is in the outer tube, when this device arrives the bottom of a hole, starts slush pump, and mud promotes the slider and makes video recording equipment stretch out the outer tube, and elasticity centralizer expandes, supports tightly on the drilling wall, anti-skidding piece sets firmly in the outer tube, prevents the slider outer tube.

2. The apparatus as claimed in claim 1, wherein the outer diameter of the sliding block is smaller than the inner diameter of the outer tube, so that there is a gap between them, and when slurry enters the gap, the slurry is lubricated sufficiently.

3. The apparatus of claim 1, wherein the video recording device comprises a camera, a video recorder and a control circuit board, a battery, and a hard disk, the camera is electrically connected to the video recorder and the control circuit board, the battery is electrically connected to the video recorder and the control circuit board, and the hard disk is detachably connected to the video recording device.

4. The apparatus as claimed in claim 3, wherein the camera is provided with an illumination device, and the illumination device is disposed in the camera.

5. The device as claimed in claim 3, wherein said camera is provided with a wiper fixed to the front end of said camera.

6. The apparatus as claimed in claim 3, wherein a heating film is disposed on the camera, and the heating film is adhered to the camera.

7. The apparatus as claimed in any one of claims 3 to 6, wherein the camera is a fisheye lens, an ultra wide-angle panoramic lens or a binocular lens.

8. The apparatus of claim 3, wherein the resilient centralizer is a circular arc shaped metal dome.