A drill rod for in-situ measurement while drilling for engineering drilling

Abstract

The invention discloses a drill rod for in-situ measurement while drilling for engineering drilling, comprising a mounting column, a measurement while drilling instrument, a torque sensor, a connecting assembly and a drill bit; a mud channel is opened in the mounting column, and the measurement while drilling instrument is assembled on the outer surface of the mounting column; the connecting assembly comprises an upper connecting component, a middle connecting component and a lower connecting component; the upper connecting component is assembled on one end of the mounting column, and the drill bit is assembled on the other end of the mounting column through the lower connecting component; a sealing plate assembly for protecting the measurement while drilling instrument is detachably mounted on the middle connecting component; the torque sensor is assembled between the middle connecting component and the lower connecting component; by means of the measurement while drilling instrument, the torque sensor and other components, in-situ measurement of multiple parameters in the drilling process is realized, and the influence of external interference on the measurement accuracy is reduced; the sealing plate assembly detachably mounted on the middle connecting component effectively protects the measurement while drilling instrument from being damaged by drilling media such as mud and rock debris.

Description

Technical Field

[0001] The invention relates to the technical field of engineering geological survey, in particular to a while-drilling in-situ measurement drill rod used for engineering drilling. Background Art

[0002] Engineering geological survey is a geological investigation and research work conducted to identify the geological factors that affect engineering buildings. After identifying the engineering geological conditions, it is necessary to predict the mode, characteristics and scale of the interaction between the engineering building and the geological environment (i.e., engineering geological action) based on the structure and operation characteristics of the designed building, and make a correct evaluation to provide a basis for determining protective measures to ensure the stability and normal use of the building.

[0003] At present, the main method of engineering geological survey is to drill the core of the formation rock and soil, and use static penetration measurement and seismic detection as auxiliary tools. However, static penetration measurement is mainly used for soil layer measurement, and the depth of seismic detection is limited, so drilling the core of the formation rock and soil is currently the most direct way of engineering geological survey. When the core of the formation rock and soil is extracted to the ground, the key parameters such as the strength and hardness of the core of the rock and soil change due to the release of formation stress, which will affect the actual parameter performance of the formation rock and soil, and thus bring systematic errors to the subsequent correct evaluation.

[0004] In the "An In-situ Measurement Device for Near-Drill Bit End Used in Engineering Geological Survey" disclosed in the publication number CN117489331A, it includes a lower connector, the head of which is connected to the drill bit; an upper connector, the tail of which is connected to the drill pipe; a measuring assembly, including a mounting frame, a torque sensor and a speed sensor, the mounting frame is used to install the torque sensor and the speed sensor, the torque sensor and the speed sensor are used to measure the tension, pressure, torque and speed of the drill pipe; an external protection assembly, including an external protection shell, which is arranged outside the mounting frame to protect the measuring assembly; the lower connecting body, the mounting frame, and the upper connecting body are coaxially connected in sequence, and the axis formed is hollow as a mud channel. Although the above device effectively improves the efficiency of engineering geological survey, it has a complex structure and contains multiple seals. The increase in sealing points will bring problems in terms of sealing; if the seal fails or is improperly installed, drilling media such as mud will enter the device, affecting the measurement accuracy and instrument life. Summary of the invention

[0005] In order to overcome the above-mentioned defects in the prior art, a drill rod for in-situ measurement while drilling for engineering drilling is provided.

[0006] The technical solution of the present invention is as follows: a drill pipe for in-situ measurement while drilling for engineering drilling, comprising a mounting column, a measurement while drilling instrument, a torque sensor, a connecting assembly and a drill bit; the measurement while drilling instrument is mounted on the outer surface of the mounting column; the connecting assembly comprises an upper connecting component, a middle connecting component and a lower connecting component; the upper connecting component is mounted on one end of the mounting column, and the drill bit is mounted on the other end of the mounting column through the lower connecting component; a sealing plate assembly for protecting the measurement while drilling instrument is detachably mounted on the middle connecting component; the torque sensor is mounted between the middle connecting component and the lower connecting component.

[0007] Preferably, the sealing plate assembly includes a sealing main board and sealing matching plates assembled at the upper and lower ends of the sealing main board; the sealing main board is clamped with the middle connecting component through the sealing matching plates.

[0008] Preferably, a matching groove which is engaged with the sealing matching plate is provided on the middle connecting component.

[0009] Preferably, a fixing assembly is mounted on the side of the sealing main board, and the fixing assembly is rotatably connected to a circular track provided on the outer surface of the middle connecting component for mounting the sealing main board.

[0010] Preferably, the fixing assembly includes a fixing column and a positioning rod assembled on the top of the fixing column; the fixing column is assembled on the upper and lower ends of the sealing mainboard, and the outer side of the circular track is provided with a plurality of fixing slots matching the fixing column.

[0011] Preferably, a plurality of fixing columns and positioning rods are provided; and a limiting device for assembling the fixing columns is provided between the sealing main board and the middle connecting component.

[0012] Preferably, a limiting groove for assembling a limiting device is provided on the middle connecting component; the limiting device comprises a limiting telescopic rod and an elastic structure; the limiting telescopic rod is assembled in the limiting groove via the elastic structure.

[0013] Preferably, an electromagnet is provided on one side of the middle connecting component close to the limiting groove, and the electromagnet absorbs the limiting telescopic rod back into the limiting groove through magnetism.

[0014] Preferably, an end of the position-limiting telescopic rod away from the elastic structure is provided with a plug hole matching the positioning plug rod.

[0015] Preferably, a wire arranging device for assembling wires connected to the drilling measurement instrument is provided on the mounting column; the wire arranging device includes a lifting groove and a wire arranging block; the lifting groove is opened on the surface of the mounting column, the wire arranging block can be detachably assembled in the lifting groove, and the wires are wound around the mounting column through the wire arranging block.

[0016] Compared with the prior art, the present invention has the following beneficial effects: A drill pipe for in-situ measurement while drilling for engineering drilling realizes in-situ measurement of multiple parameters during the drilling process through components such as the measurement while drilling instrument and a torque sensor, reduces the influence of external interference on the measurement accuracy, improves the accuracy and reliability of the measurement data, and can monitor various parameters during the drilling process in real time; the sealing plate assembly that can be detachably installed on the middle connecting component effectively protects the measurement while drilling instrument from damage by drilling media such as mud and rock debris.

[0017] Furthermore, the sealing plate assembly includes a sealing main plate and a sealing matching plate, which are connected to the middle connecting component by a snap-on method, thereby effectively protecting the downhole measurement instrument from the influence of drilling environment such as mud, and improving the service life and measurement accuracy of the instrument.

[0018] Furthermore, the matching groove provided on the middle connecting component is engaged with the sealing matching plate, thereby enhancing the connection stability between the sealing plate assembly and the middle connecting component and improving the protection effect of the instrument.

[0019] Furthermore, the fixing assembly assembled on the side of the sealing main board is rotatably connected to the circular track on the middle connecting component, which facilitates the installation and removal of the sealing main board and ensures the stability of the sealing main board during the drilling process.

[0020] Furthermore, the fixing column and the positioning rod enhance the connection strength between the sealing main board and the middle connecting component, while the different shape designs of the positioning rod can prevent the sealing main board from being misoperated during installation.

[0021] Furthermore, the provision of the limiting device simplifies the installation and fixing process of the sealed mainboard and improves the installation efficiency.

[0022] Furthermore, the limiting groove provides an installation space for the limiting device, and at the same time, the limiting device fixes the fixing column and the positioning rod through the elastic structure and the limiting telescopic rod, thereby enhancing the stability of the entire structure.

[0023] Furthermore, the provision of the electromagnet enables the limit telescopic rod to be sucked back into the limit groove when needed, which facilitates the disassembly and replacement of the sealing main board and improves the maintenance convenience of the drill rod.

[0024] Furthermore, the insertion hole on the limiting telescopic rod matches the positioning rod, which further enhances the connection strength between the fixing column and the positioning rod and the limiting telescopic rod, thereby improving the stability of the entire structure.

[0025] Furthermore, the wire arrangement device includes a lifting groove and a wire arrangement block, and the wires are wound around the mounting column through the wire arrangement block, thereby achieving orderly arrangement and fixation of the wires, avoiding entanglement and damage of the wires during the drilling process, and improving the safety and reliability of the drill rod.

[0026] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the installation of a drill rod for in-situ measurement while drilling for engineering drilling according to the present invention; Figure 2 It is a structural schematic diagram of the sealing plate assembly of the present invention; Figure 3 It is a schematic diagram of the installation of the installation column of the present invention; Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 A cross-sectional view of a drill pipe for in-situ measurement while drilling for engineering drilling according to the present invention Figure 1 ; Figure 6 A cross-sectional view of a drill pipe for in-situ measurement while drilling for engineering drilling according to the present invention Figure 2 ; Figure 7 for Figure 6 The enlarged cross-sectional view at B in the middle; Figure 8 A cross-sectional view of a drill pipe for in-situ measurement while drilling for engineering drilling according to the present invention Figure 3 ; Fig. 9 for Figure 8 The enlarged cross-sectional diagram at C in the middle; The following are the descriptions of the reference numerals: Mounting column 1, mud channel 11, while drilling measurement instrument 2, wire 21, torque sensor 3, connecting assembly 4, upper connecting part 41, middle connecting part 42, lower connecting part 43, drill bit 5, sealing plate assembly 6, sealing main board 61, sealing matching plate 62, matching groove 421, sealing ring 421-1, circular track 422, fixed slot 422-1, limiting groove 423, fixing assembly 63, fixing column 631, positioning rod 632, limiting device 7, limiting telescopic rod 71, elastic structure 72, jack 711, electromagnet 8, wiring device 9, lifting slot 91, wiring block 92. DETAILED DESCRIPTION

[0028] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0029] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation of the present invention.

[0030] like Figures 1 to 9 As shown: Example 1: Basic type of in-situ measurement of drill pipe while drilling.

[0031] The present embodiment provides a basic type of in-situ measurement while drilling drill pipe, and its structure includes a mounting column 1, a measurement while drilling instrument 2, a torque sensor 3, a connecting assembly 4 and a drill bit 5. A mud channel 11 is provided in the mounting column 1, and the measurement while drilling instrument 2 is mounted on the outer surface of the mounting column 11. The connecting assembly 4 is composed of an upper connecting component 41, a middle connecting component 42 and a lower connecting component 43, which together connect the various parts of the drill pipe. The torque sensor 3 is mounted between the middle connecting component 42 and the lower connecting component 43, and is used to measure the tension and torque during the drilling process. In addition, a sealing plate assembly 6 is also mounted on the middle connecting component to protect the measurement while drilling instrument 2 from damage by drilling media such as mud.

[0032] Specifically, it includes a mounting column 1, a while drilling measurement instrument 2, a torque sensor 3, a connecting assembly 4 and a drill bit 5; a mud channel 11 is opened in the mounting column 1, and the while drilling measurement instrument 2 is assembled on the outer surface of the mounting column 1; the connecting assembly 4 includes an upper connecting component 41, a middle connecting component 42 and a lower connecting component 43; the upper connecting component 41 is assembled at one end of the mounting column 1, and the drill bit 5 is assembled at the other end of the mounting column 1 through the lower connecting component 43; a sealing plate assembly 6 for protecting the while drilling measurement instrument 2 is detachably mounted on the middle connecting component 42; the torque sensor 3 is assembled between the middle connecting component 42 and the lower connecting component 43.

[0033] Embodiment 2: Enhance the sealing performance of the drill pipe by in-situ measurement while drilling.

[0034] On the basis of Example 1, the present embodiment improves the sealing plate assembly 6 to enhance its sealing performance. The sealing plate assembly 6 includes a sealing main board 61 and a sealing mating plate 62, and the sealing mating plate 62 is assembled on the upper and lower ends of the sealing main board 61 and fixed by snapping with the mating groove 421 on the middle connecting part 42. A sealing ring 421-1 is provided on the mating groove 421 to ensure the tightness of the seal. In addition, the fixing assembly 63 is also optimized, including a fixing column 631 and a positioning plug rod 632, which are rotatably connected to the circular track 422 on the outer surface of the middle connecting part 42, and are used to install the sealing main board 61.

[0035] Specifically, the sealing plate assembly 6 includes a sealing main board 61 and a sealing matching plate 62; the sealing matching plate 62 is assembled at the upper and lower ends of the sealing main board 61, and the sealing main board 61 is clamped with the middle connecting component 42 through the sealing matching plate 62. A matching groove 421 that is engaged with the sealing matching plate 62 is provided on the middle connecting component 42. A sealing ring 421-1 for sealing is provided on the matching groove 421. A fixing assembly 63 is assembled on the side of the sealing main board 61, and the fixing assembly 63 is rotatably connected to the circular track 422 provided on the outer surface of the middle connecting component 42 for installing the sealing main board 61. The fixing assembly 63 includes a fixing column 631 and a positioning rod 632 assembled on the top of the fixing column 631; the fixing column 631 is assembled at the upper and lower ends of the sealing main board 61, and the outer side of the circular track 422 is provided with a plurality of fixing slots 422-1 that match the fixing column 631.

[0036] Embodiment 3: In-situ measurement of drill pipe while drilling with a limit device.

[0037] On the basis of Example 2, this embodiment adds a limiting device 7 to improve the stability and reliability of the installation of the sealing main board 61. The limiting device 7 includes a limiting telescopic rod 71 and an elastic structure 72, which are assembled in the limiting groove 423 of the middle connecting component 42. The limiting telescopic rod 71 is connected to the limiting groove 423 through the elastic structure 72, and one end of the limiting telescopic rod 71 is provided with a socket 711 matching the positioning plug rod 632. The socket 711 cooperates with the positioning plug rod 632 to fix the position of the sealing main board 61.

[0038] When the drilling measurement instrument 2 or other structures need to be repaired and disassembled, the limiting telescopic rod 71 is sucked back into the limiting groove 423 under the action of the electromagnet 8, which facilitates the disassembly of the sealing plate assembly 6. The electromagnet 8 makes the disassembly of the limiting telescopic rod 71 more convenient and flexible.

[0039] Specifically, the middle connecting part 42 is provided with a limiting groove 423 for assembling the limiting device 7; the limiting device 7 includes a limiting telescopic rod 71 and an elastic structure 72; the limiting telescopic rod 71 is assembled in the limiting groove 423 through the elastic structure 72. An electromagnet 8 is provided on one side of the middle connecting part 42 close to the limiting groove 423, and the electromagnet 8 sucks the limiting telescopic rod 71 back into the limiting groove 423 through magnetism. An end of the limiting telescopic rod 71 away from the elastic structure 72 is provided with a socket 711 matching the positioning plug 632.

[0040] In this embodiment, there are multiple fixing columns 631 and positioning rods 632, and the shapes of each positioning rod 632 mounted on each fixing column 631 are different; a limiting device 7 for assembling the fixing column 631 is provided between the sealing main board 61 and the middle connecting component 42. The multiple positioning rods 632 are respectively circular rods and triangular rods; the limiting device 7 includes multiple plug holes 711 that are engaged with the circular rods and the triangular rods, and the shapes of the ends of the multiple plug holes 711 are respectively matched with the circular rods and the triangular rods, and the multiple plug holes 711 include circular plug holes and triangular plug holes, which increases the stability and flexibility of installation.

[0041] Furthermore, the shapes of the circular insertion rod, the triangular insertion rod, the circular insertion hole, and the triangular insertion hole are not limited to the circular and triangular shapes.

[0042] Embodiment 4: In-situ measurement of drill pipe while drilling with a line arrangement device.

[0043] On the basis of Example 3, this embodiment adds a wire arrangement device 9 to better manage the wires 21 connected to the while drilling measurement instrument 2. The wire arrangement device 9 includes a lifting groove 91 and a wire arrangement block 92. The lifting groove 91 is opened on the surface of the mounting column 1, and the wire arrangement block 92 can be detachably assembled in the lifting groove 91. The wire 21 is wound around the mounting column 11 through the wire arrangement block 92. The position of the wire arrangement block 92 can be adjusted as needed, thereby adjusting the winding height of the wire 21. This design not only makes the management of the wires more orderly and beautiful, but also improves the overall performance and safety of the drill pipe.

[0044] Specifically, the mounting column 1 is provided with a wire arrangement device 9 for assembling the wires 21 connected to the drilling measurement instrument 2; the wire arrangement device 9 includes a lifting groove 91 and a wire arrangement block 92; the lifting groove 91 is opened on the surface of the mounting column 1, and the wire arrangement block 92 can be detachably assembled in the lifting groove 91, and the wires 21 are wound around the mounting column 1 through the wire arrangement block 92.

[0045] Example 5: Comprehensive in-situ measurement of drill pipe while drilling.

[0046] This embodiment provides a comprehensive in-situ measurement while drilling drill pipe, which integrates all the advantages of embodiments 1 to 4. The drill pipe has enhanced sealing, stable limit devices and orderly wire management functions, and can meet the needs of various complex drilling environments. At the same time, it has a compact structure, convenient operation and reliable performance, providing strong support for engineering drilling.

[0047] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A drill pipe for in-situ measurement while drilling for engineering drilling, characterized by: The invention comprises a mounting column (1), a drilling-while-drilling instrument (2), a torque sensor (3), a connecting assembly (4) and a drill bit (5); the drilling-while-drilling instrument (2) is mounted on the outer surface of the mounting column (1); the connecting assembly (4) comprises an upper connecting component (41), a middle connecting component (42) and a lower connecting component (43); the upper connecting component (41) is mounted on one end of the mounting column (1), and the drill bit (5) is mounted on the other end of the mounting column (1) via the lower connecting component (43); a sealing plate assembly (6) for protecting the drilling-while-drilling instrument (2) is detachably mounted on the middle connecting component (42); and the torque sensor (3) is mounted between the middle connecting component (42) and the lower connecting component (43).

2. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 1, characterized in that: The sealing plate assembly (6) comprises a sealing main plate (61) and sealing matching plates (62) mounted on the upper and lower ends of the sealing main plate (61); the sealing main plate (61) is clamped with the middle connecting component (42) via the sealing matching plates (62).

3. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 1, characterized in that: The middle connecting component (42) is provided with a matching groove (421) which is engaged with the sealing matching plate (62).

4. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 2, characterized in that: A fixing assembly (63) is mounted on the side of the sealing main board (61), and the fixing assembly (63) is rotatably connected to a circular track (422) provided on the outer surface of the middle connecting component (42) and is used for mounting the sealing main board (61).

5. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 4, characterized in that: The fixing assembly (63) comprises a fixing column (631) and a positioning rod (632) mounted on the top of the fixing column (631); the fixing column (631) is mounted on the upper and lower ends of the sealing main board (61), and the outer side of the circular track (422) is provided with a plurality of fixing slots (422-1) matching the fixing column (631).

6. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 5, characterized in that: A plurality of the fixing columns (631) and the positioning rods (632) are provided; a limiting device (7) for assembling the fixing columns (631) is provided between the sealing main board (61) and the middle connecting component (42).

7. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 1, characterized in that: The middle connecting component (42) is provided with a limiting groove (423) for assembling the limiting device (7); the limiting device (7) comprises a limiting telescopic rod (71) and an elastic structure (72); the limiting telescopic rod (71) is assembled in the limiting groove (423) via the elastic structure (72).

8. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 1, characterized in that: An electromagnet (8) is provided on one side of the middle connecting component (42) close to the limiting groove (423), and the electromagnet (8) magnetically absorbs the limiting telescopic rod (71) back into the limiting groove (423).

9. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 7, characterized in that: An end of the position-limiting telescopic rod (71) away from the elastic structure (72) is provided with a plug hole (711) matching the positioning plug rod (632).

10. The in-situ measurement while drilling drill pipe for engineering drilling according to claim 1, characterized in that: The mounting column (1) is provided with a wire arrangement device (9) for assembling wires (21) connected to a drilling measurement instrument (2); the wire arrangement device (9) comprises a lifting groove (91) and a wire arrangement block (92); the lifting groove (91) is provided on the surface of the mounting column (1); the wire arrangement block (92) is detachably assembled in the lifting groove (91); and the wires (21) are wound around the mounting column (1) via the wire arrangement block (92).

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