CN217897857U - Real-time depth and deviation monitoring device for geotechnical engineering investigation drilling process - Google Patents
Real-time depth and deviation monitoring device for geotechnical engineering investigation drilling process Download PDFInfo
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- CN217897857U CN217897857U CN202221358892.9U CN202221358892U CN217897857U CN 217897857 U CN217897857 U CN 217897857U CN 202221358892 U CN202221358892 U CN 202221358892U CN 217897857 U CN217897857 U CN 217897857U
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Abstract
The utility model provides a real-time depth and deviation monitoring device in the geotechnical engineering investigation drilling process, which belongs to the technical field of geotechnical investigation and comprises an inclinometer, an inclination angle sensing signal analyzer, a stay wire sensor, a time-depth recorder and a computing terminal; the inclination measuring device comprises a first drill rod, a first inclination measuring sensor group and a second inclination measuring sensor group which are arranged in the first drill rod at intervals, and the first inclination measuring sensor group and the second inclination measuring sensor group are electrically connected with the inclination angle sensing signal analyzer; the stay wire sensor is connected with the head end of the first drill rod through a stay wire; the inclination angle sensing signal analyzer and the pull wire sensor are respectively and electrically connected with the time-depth recorder; the time-depth recorder is in communication connection with the computing terminal, the device utilizes the inclinometer to detect the inclination angle of the first drill rod, and simultaneously utilizes the stay wire sensor to detect the length of the first drill rod, so that the depth and deviation of the drilled hole can be computed, and the measurement of the depth and deviation of the drilled hole is more accurate.
Description
Technical Field
The utility model relates to a geotechnical engineering reconnaissance drilling process real-time degree of depth and off normal monitoring devices belongs to geotechnical reconnaissance technical field.
Background
The drilling measurement is an important component of the geotechnical investigation technology and plays an extremely important role in the aspects of drilling quality detection, drilling orientation, mineral resource assessment, well construction engineering and the like. Especially, when the exploration drilling is carried out in the overlong drilling process, due to the fact that drilling tools (a main drilling rod in the drilling tools is formed by connecting a plurality of drilling rods through threaded holes at the front end and a threaded square connecting part), factors such as self weight, joint gaps, complex rock geological conditions and the like often cause the deviation tendency of the axis of a drilling hole channel, the deviation rate of a drilling final hole exceeds requirements, the construction quality and progress are affected, the exploration depth and hole site results are inaccurate, the design of follow-up geotechnical geological information needing to be referred to and the accuracy of pile foundation construction are greatly affected, and the engineering quality safety is endangered.
The current device for measuring the drilling hole is disclosed as CN106595444A, and the invention name is 'a method for measuring the perpendicularity of a rotary drilling pile hole', wherein a lifting ring which is vertically upward is arranged at the center of the bottom surface of the hole of the device, a section of thin rope and a floating ball are arranged, one end of the thin rope is fixed on the floating ball, and the other end of the thin rope penetrates through the lifting ring; obtaining the offset distance of the central point of the floating ball, and calculating the position deviation of the central point of the floating ball and the central point of the top of the drill hole; the verticality, i.e. the inclination, is calculated according to the vertical depth and the position deviation, but the device is not suitable for drilling with longer hole depth, and the calculation result is not accurate enough.
Disclosure of Invention
To the technical problem that exists, the utility model provides a geotechnical engineering reconnaissance creeps into real-time degree of depth of process and off normal monitoring devices, and the device utilizes the inclination that the inclinometer detected first drilling rod, utilizes the sensor that acts as go-between to detect length simultaneously to this calculates the degree of depth and the off normal of drilling, makes the degree of depth and the measurement of off normal of drilling more accurate.
The technical scheme of the utility model is that: the utility model provides a geotechnical engineering reconnaissance drilling process real-time degree of depth and off normal monitoring devices which characterized in that: the system comprises an inclinometer, an inclination angle sensing signal analyzer, a stay wire sensor, a time-depth recorder and a computing terminal;
the inclinometer comprises a first drill rod, a first inclination measuring sensor group and a second inclination measuring sensor group which are arranged in the first drill rod at intervals, and the first inclination measuring sensor group and the second inclination measuring sensor group are electrically connected with the inclination angle sensing signal analyzer;
the stay wire sensor is connected with the head end of the first drill rod through a stay wire;
the inclination angle sensing signal analyzer and the pull wire sensor are respectively and electrically connected with the time-depth recorder;
the time-depth recorder is in communication connection with the computing terminal.
The technical scheme is further improved as follows: the inclination measuring sensor group comprises a circular sleeve and two inclination sensors, wherein the two inclination sensors are oppositely arranged on the inner wall of the circular sleeve, and the outer wall of the circular sleeve is fixedly connected with the inner wall of the first drill rod.
Furthermore, the outer wall of the circular sleeve is fixedly connected with the inner wall of the first drill rod through a bolt.
Furthermore, a first inclination measuring sensor group is arranged at the head end of the first drill rod, and a second inclination measuring sensor group is arranged at the tail end of the first drill rod.
Furthermore, an opening is formed in the top face of the head end of the first drill rod and the top face of the tail end of the first drill rod, a first bottom sealing cover is installed at the opening of the top face of the head end of the first drill rod, and a second bottom sealing cover is installed at the opening of the top face of the tail end of the first drill rod.
Further, the first bottom sealing cover is a cone frustum-shaped bottom sealing cover, and a through hole is formed in the first bottom sealing cover;
and the first inclination measuring sensor group and the second inclination measuring sensor group are electrically connected with the inclination angle sensing signal analyzer through signal transmission wires penetrating through the through holes.
Furthermore, the cone frustum-shaped bottom sealing cover is of a hollow structure, the top end and the bottom surface are opened to form a through hole, and a rubber head is further arranged at the opening of the top end of the cone frustum-shaped bottom sealing cover.
Furthermore, the first bottom sealing cover is in threaded connection with the head end of the first drill rod, and the second bottom sealing cover is in threaded connection with the tail end of the first drill rod.
According to the technical scheme, the method comprises the following steps:
(1) The utility model provides a geotechnical engineering reconnaissance creeps into real-time degree of depth of process and off normal monitoring devices and utilizes the inclination of inclinometer detection first drilling rod, inclination sensing signal resolver carries out the analysis to the inclination of first drilling rod, utilize the sensor that acts as go-between to detect length simultaneously, the time-degree of depth record appearance comes the inclination of recording first drilling rod, the length that the sensor that acts as go-between detected and the time that corresponds, the degree of depth and the off normal of drilling are calculated to the calculation terminal, the degree of depth that makes drilling and the measurement of off normal are more accurate, this monitoring devices is equipped with two sensor groups that inclines simultaneously, in order to obtain measured data and its contrast data, reduce the error, make measured data more accurate. The utility model provides a monitoring devices degree of automation is high, the device is light, the engineering technical personnel of being convenient for use, and every drilling only needs to install a first drilling rod on ordinary reconnaissance drilling rod, can realize the monitoring, is applicable to the longer drilling of hole depth, and first drilling rod can used repeatedly.
(2) The utility model provides a geotechnical engineering investigation creeps into real-time degree of depth of process and off normal monitoring devices in first drilling rod head end top surface opening part and installs first bottom sealing lid, and second bottom sealing lid is installed to first drilling rod end top surface opening part to prevent drilling normal water and the inside pollution sensor of mud access arrangement.
Drawings
For a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for monitoring the real-time depth and deviation in the exploration drilling process provided by the present invention;
fig. 2 is a schematic structural view of a first drill rod provided by the present invention;
fig. 3 is a schematic structural view of another first drill rod provided by the present invention;
fig. 4 is a schematic view illustrating the first drill rod and the second drill rod according to the present invention;
fig. 5 is a schematic structural diagram of the inclinometer sensor provided by the present invention.
In the figure: 1. a first drill rod; 2. a first inclinometer sensor group; 3. a second inclinometer sensor group; 21. buckling; 22. a bolt; 23. a circular sleeve; 24. a tilt sensor; 5. a signal transmission wire; 6. a pull wire sensor; 61. a time-depth recorder; 7. a computing terminal; 81. a second bottom sealing cover; 82. a first bottom sealing cover; 83. gluing heads; 9. a second drill pipe; 10. and the inclination angle sensing signal analyzer.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the present application, and it is obvious that the described embodiments are only embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 5, a geotechnical engineering investigation drilling process real-time depth and deviation monitoring device comprises an inclinometer, an inclination sensing signal analyzer 10, a stay wire sensor 6, a time-depth recorder 61 and a computing terminal 7;
the inclinometer comprises a first drill rod 1, a first inclination measuring sensor group 2 and a second inclination measuring sensor group 3 which are arranged in the first drill rod 1 at intervals, wherein the first drill rod is made of steel materials and is hollow inside, and the first inclination measuring sensor group 2 and the second inclination measuring sensor group 3 are electrically connected with an inclination angle sensing signal analyzer 10; the first inclination measuring sensor group 2 and the second inclination measuring sensor group 3 are used for measuring the inclination angle of the first drill rod 1, and the inclination angle sensing signal analyzer 10 is used for analyzing the monitoring data sent by the first inclination measuring sensor group 2 and the second inclination measuring sensor group 3 and converting the monitoring data into signals which can be received by the time-depth recorder 61 and the computing terminal 7.
The stay wire sensor 6 is connected with the head end of the first drill rod 1 through a stay wire; the pull sensor 6, also known as a pull-cord type displacement sensor, functions to convert mechanical motion into an electrical signal that can be metered, recorded or transmitted. The pull-cord displacement sensor is made of a stretchable stainless steel cable wound around a threaded hub which is coupled to a precision rotary sensor.
The stay wire sensor 6 is used for obtaining the distance from the first drill rod 1 to the stay wire sensor 6 at any time in real time, in the embodiment, the stay wire sensor 6 is installed on the ground, the first drill rod 1 is additionally arranged at one end of a deep drilling hole of a common exploration drill rod of the exploration drilling equipment (namely, the lowest end of the common exploration drill rod), in the actual using process, the outer diameters of the first drill rod 1 and the common exploration drill rod correspond, the first drill rod 1 is connected with the common exploration drill rod through threads, the common exploration drill rod is the second drill rod 9, the length measured by the stay wire sensor 6 is actually the length of the drill rod inside the drilling hole, namely the length of the deep drilling hole of the second drill rod 9. And to further reduce the error, in one implementation of the embodiment, tie-wraps are used to secure the pull wires to the second drill rod 9 every 4-5 m.
The inclination angle sensing signal analyzer 10 and the stay wire sensor 6 are respectively and electrically connected with the time-depth recorder 61; the time-depth recorder 61 is in communication connection with the computing terminal 7, the inclination angle sensing signal analyzer and the time-depth recorder are both arranged on the ground, the time-depth recorder 61 is used for recording the length of the drill rod inside the drill hole, the inclination angle of the first drill rod 1 and the corresponding time, and the computing terminal 7 is used for computing the total displacement deviation and the actual depth of the drill hole according to the length of the drill rod inside the drill hole and the inclination angle of the first drill rod 1.
The formula of the calculation terminal 7 for calculating the total displacement deviation and the actual depth is DN = L1 × sin θ, DH = L1 × cos θ, where DN is the total displacement deviation, DH is the actual depth, L1 is the drill rod length inside the drill hole, and θ is the inclination angle of the first drill rod 1.
Furthermore, the calculation terminal 7 may also perform an average calculation on the test results of the first inclination measuring sensor group 2 according to a multipoint average calculation inclination method to obtain an average inclination of the first drill rod 1. In combination with the recording at each time, since the dip angle is known at each depth, the offset distance is calculated by layering (1-2 m for one layer), and the total displacement deviation of the device and the center of the borehole and the actual depth can be obtained by a mathematical superposition summation method.
The calculation formula is DN =sigmaLi × sin (theta i), DH =sigmaLi × cos (theta i), wherein DN is total displacement deviation, DH is actual depth, li is length of a drill rod in a drill hole during a certain layering, and theta i is inclination angle of the first drill rod 1 during a certain layering.
In the same way, the total displacement deviation and the actual depth of the center of the drill hole are calculated according to the test result of the second inclination measuring sensor group 3, and the data are used as comparison data to reduce errors in turn, so that the measured data are more accurate.
In other embodiments, the inclination sensor group comprises a circular sleeve 23 and two inclination sensors 24, the inclination sensors 24 are also called an inclinometer, a level meter and an inclinometer and are often used for measuring the spatial angle change of the system, the two inclination sensors 24 are oppositely arranged on the inner wall of the circular sleeve 23, and the outer wall of the circular sleeve 23 is fixedly connected with the inner wall of the first drill rod 1. Each inclination angle sensor measures the inclination angle relative to the space coordinate system and projects the inclination angle to the designated coordinate system surface through mathematical decomposition, so that the slope of the drilling rod drilling track of the coordinate system surface is obtained, and calculation parameters are provided for the calculation of the total displacement deviation and the actual depth of the subsequent calculation terminal 7.
In other embodiments, the outer wall of the cylindrical sleeve 23 is fixedly connected with the inner wall of the first drill rod 1 through the bolt 22.
In other embodiments, the inner walls of the first and the last ends of the first drill rod 1 are provided with a buckle 21 for fixing the position of the circular sleeve 23, the buckle 21 is similar to a hook structure and is fixed on the inner wall of the first drill rod 1, and in the actual use process, the circular sleeve 23 is placed in the buckle 21 to facilitate the subsequent bolt 22 to fix the circular sleeve 23.
In other embodiments, a first inclination sensor set 2 is provided at the head end of the first drill pipe 1 and a second inclination sensor set 3 is provided at the tail end of the first drill pipe 1.
In other embodiments, the top surface of the head end of the first drill rod 1 and the top surface of the tail end of the first drill rod 1 are provided with openings, a first sealing bottom cover 82 is arranged at the opening of the top surface of the head end of the first drill rod 1, a second sealing bottom cover 81 is arranged at the opening of the top surface of the tail end of the first drill rod 1, the first sealing bottom cover 82 is in threaded connection with the head end of the first drill rod 1, and the second sealing bottom cover 81 is in threaded connection with the tail end of the first drill rod 1.
In other embodiments, the first bottom sealing cover 82 is a truncated cone shaped bottom sealing cover, and the first bottom sealing cover 82 is provided with a through hole; the frustum cone shaped bottom sealing cover is of a hollow structure, the top end and the bottom surface are opened to form a through hole, the first inclination measuring sensor group 2 and the second inclination measuring sensor group 3 are electrically connected with an inclination angle sensing signal analyzer 10 through a signal transmission lead 5 penetrating through the through hole, and are connected with a power supply (not shown in the figure) through a power-on lead (not shown in the figure) penetrating through the through hole. The opening at the top end of the cone frustum-shaped bottom sealing cover is also provided with a rubber head 83, and the rubber head 83 is similar to a cone and is used for centralizing and fixing the electrifying lead and the signal transmission lead 5. In order to ensure the effect of isolating water and slurry, the through holes on the surface of the first sealing bottom cover 82 and the gaps of the adhesive heads 83 are all sealed by waterproof hot melt adhesive.
The utility model provides a geotechnical engineering reconnaissance creeps into real-time degree of depth of process and off normal monitoring devices and utilizes the inclinometer to detect the inclination of first drilling rod 1, inclination sensing signal resolver 10 carries out the analysis to the inclination of first drilling rod 1, utilize the sensor 6 measuring length of acting as go-between simultaneously, time-degree of depth record appearance 61 records the inclination of first drilling rod 1, length and the time that corresponds, calculating terminal 7 calculates the degree of depth and the off normal of drilling, the degree of depth and the measurement of off normal that make drilling are more accurate, this monitoring devices is equipped with two inclinometer sensor groups simultaneously, in order to obtain measured data and its contrast data, reduce the error, make measured data more accurate. Meanwhile, the automatic drilling device is high in automation degree, light in weight and convenient to use, engineering technicians can use the drilling device conveniently, only one first drill rod 1 is needed for each drilling hole, the drilling device is suitable for drilling holes with long hole depths, and the first drill rods can be used repeatedly.
The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.
Claims (8)
1. The utility model provides a geotechnical engineering reconnaissance drilling process real-time degree of depth and off normal monitoring devices which characterized in that: the system comprises an inclinometer, an inclination angle sensing signal analyzer, a stay wire sensor, a time-depth recorder and a computing terminal;
the inclinometer comprises a first drill rod, a first inclination measuring sensor group and a second inclination measuring sensor group which are arranged in the first drill rod at intervals, and the first inclination measuring sensor group and the second inclination measuring sensor group are electrically connected with the inclination angle sensing signal analyzer;
the pull wire sensor is connected with the head end of the first drill rod through a pull wire;
the inclination angle sensing signal analyzer and the pull wire sensor are respectively and electrically connected with the time-depth recorder;
and the time-depth recorder is in communication connection with the computing terminal.
2. The geotechnical engineering investigation drilling process real-time depth and deviation monitoring device of claim 1, which is characterized in that: the inclination measuring sensor group comprises a circular sleeve and two inclination sensors, wherein the two inclination sensors are oppositely arranged on the inner wall of the circular sleeve, and the outer wall of the circular sleeve is fixedly connected with the inner wall of the first drill rod.
3. The geotechnical engineering investigation drilling process real-time depth and deviation monitoring device of claim 2, wherein: the outer wall of the circular sleeve is fixedly connected with the inner wall of the first drill rod through a bolt.
4. The geotechnical engineering investigation drilling process real-time depth and deviation monitoring device of claim 1, wherein said first inclinometer sensor group is disposed at the head end of said first drill pipe, and said second inclinometer sensor group is disposed at the tail end of said first drill pipe.
5. The geotechnical engineering investigation drilling process real-time depth and deviation monitoring device of claim 1, wherein the top surface of the first drill rod head end and the top surface of the first drill rod tail end are provided with openings, a first bottom sealing cover is installed at the opening of the top surface of the first drill rod head end, and a second bottom sealing cover is installed at the opening of the top surface of the first drill rod tail end.
6. The geotechnical engineering investigation drilling process real-time depth and deviation monitoring device of claim 5, wherein the first bottom sealing cover is a truncated cone shaped bottom sealing cover, and the first bottom sealing cover is provided with a through hole;
the first inclination measuring sensor group and the second inclination measuring sensor group are electrically connected with the inclination angle sensing signal resolver through signal transmission wires penetrating through the through holes.
7. The device for monitoring the real-time depth and deviation in the drilling process of geotechnical engineering investigation of claim 6, wherein the truncated cone shaped bottom closure cap is of a hollow structure, the top end and the bottom surface of the truncated cone shaped bottom closure cap are opened to form a through hole, and a rubber head is further arranged at the opening of the top end of the truncated cone shaped bottom closure cap.
8. The geotechnical engineering investigation drilling process real-time depth and deviation monitoring device of claim 5, wherein the first bottom-sealing cap is in threaded connection with the head end of the first drill pipe, and the second bottom-sealing cap is in threaded connection with the tail end of the first drill pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221358892.9U CN217897857U (en) | 2022-05-31 | 2022-05-31 | Real-time depth and deviation monitoring device for geotechnical engineering investigation drilling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221358892.9U CN217897857U (en) | 2022-05-31 | 2022-05-31 | Real-time depth and deviation monitoring device for geotechnical engineering investigation drilling process |
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| Publication Number | Publication Date |
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| CN217897857U true CN217897857U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221358892.9U Active CN217897857U (en) | 2022-05-31 | 2022-05-31 | Real-time depth and deviation monitoring device for geotechnical engineering investigation drilling process |
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| CN (1) | CN217897857U (en) |
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- 2022-05-31 CN CN202221358892.9U patent/CN217897857U/en active Active
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| CB03 | Change of inventor or designer information |
Inventor after: Su Dingli Inventor after: Li Xiang Inventor after: Xie Xiaorong Inventor after: Zhong Xuan Inventor after: Sun Xiaoyu Inventor after: Zhong Jiagao Inventor after: Hu Hesong Inventor before: Su Dingli Inventor before: Li Xiang Inventor before: Xie Xiaorong Inventor before: Zhong Yi Inventor before: Sun Xiaoyu Inventor before: Zhong Jiagao Inventor before: Hu Hesong |
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