Drilling detection system applied to rotary drilling rig

Abstract

The invention discloses a drilling detection system applied to a rotary drilling rig, and relates to the technical field of rotary drilling rigs, the drilling detection system comprises water pipes and a supporting mechanism, the water pipes are arranged in pairs and are transparent water pipes, the two water pipes are symmetrically arranged about the axis of a sleeve, and the two water pipes are embedded into a channel which is formed in advance in a penetrating mode in the axial direction of the wall of the sleeve; the end, extending into the pipe wall of the sleeve, of the water pipe is filled with a balancing weight and arranged in a sealed mode, the supporting mechanism is arranged outside the pile position and used for guiding the water pipe, the top of the water pipe is located above the sleeve, and the supporting mechanism is detachably connected with the water pipe. Liquid is injected into the tops of the water pipes, the surface of the liquid is always higher than the upper end face of the uppermost sleeve, and the liquid level difference of the two water pipes is observed. The rotary drilling device has the effect of improving the working efficiency of rotary drilling.

Description

Technical Field

[0001] The present application relates to the technical field of rotary drilling rigs, and in particular to a drilling detection system applied to rotary drilling rigs. Background Art

[0002] Rotary drilling rigs are commonly used equipment in engineering construction processes. They can be used to dig holes to build pile foundations buried deep underground.

[0003] Taking bridge construction as an example, in order to ensure the stability of the bridge structure, a large number of pile foundations anchored in deep soil layers need to be built. In this process, a rotary drilling rig is needed. The operation process is as follows:

[0004] First, the pile position is marked out, and then the roadbed is placed, and the center of the roadbed is aligned with the center of the pile position. Then, the full-casing fully-rotary drilling rig is placed on the roadbed, and the first section of casing is lifted by a crane. The first section of casing is clamped by the full-casing fully-rotary drilling rig, and the lower end of the casing is rotated and pressed into the required depth of the formation. Then the drill bit of the rotary drilling rig is inserted into the casing to take soil. The casing is continued to be pressed into the formation while rotary excavation is carried out to take soil. After the first section of casing is drilled into place, the second section of casing is installed, and the rotation, pressing and rotary excavation are repeated until the designed depth is reached. The hole is then cleaned with a rotary drilling rig, and the steel cage is lowered, and concrete is poured. Finally, all the casing is removed in stages, and the pile foundation construction is completed.

[0005] In the above operation process, the following problems currently exist:

[0006] Because the casing is first pressed down, and then the soil and rocks are removed from the middle with a rotary drill, and then as the casing goes deeper downward, another section of casing is spliced ​​from the top; during the process, the drill bit and drill rod of the rotary drill are repeatedly lowered and lifted, and factors such as geological unevenness can cause the casing to tilt, and the drill bit itself will also deflect due to factors such as transmission clearance, so the drill bit and casing may collide during the drilling process, causing more serious casing tilt, and then leading to rework operations such as re-lowering the casing, affecting construction efficiency. Therefore, the present application proposes a new technical solution. Summary of the invention

[0007] In order to improve the working efficiency of rotary drilling, the present application provides a drilling detection system applied to a rotary drilling rig.

[0008] The present application provides a drilling detection system applied to a rotary drilling rig, which adopts the following technical solution:

[0009] A drilling detection system for a rotary drilling rig comprises a water pipe and a supporting mechanism, wherein the water pipes are arranged in pairs and are transparent water pipes, the two water pipes are arranged symmetrically about the axis of a casing, and the two water pipes are embedded and extend into a channel pre-opened along the axial direction of the casing wall, one end of the water pipe extending into the casing wall is filled with a counterweight and is sealed, the supporting mechanism is arranged outside the pile position and is used to guide the water pipe so that the top of the water pipe is located above the casing, and the supporting mechanism is detachably connected to the water pipe, liquid is injected into the top of the water pipe so that the liquid surface is always higher than the upper end surface of the casing in the uppermost section, and the liquid level difference between the two water pipes is observed.

[0010] Optionally, the supporting mechanism includes a bracket and a fixed plate, the bracket is erected on the outside of the pile hole mouth, the inner side of the upper end of the bracket is provided with an embedding groove, the fixed plate is placed in the embedding groove, and the fixed plate is located above the casing, the cross-section of the fixed plate is annular, the inner diameter of the fixed plate is larger than the drill bit diameter of the rotary drilling rig, and the fixed plate is provided with a clamping groove along its radial direction for clamping the top of the water pipe.

[0011] Optionally, it further includes a camera, a scale ring and a control module, wherein a colored liquid is injected into the water pipe, the scale ring is coaxially fixed to the lower surface of the fixed plate, and the scale ring is sleeved outside the water pipe, and the inner wall of the scale ring is provided with scale lines, a plurality of cameras are provided, the camera is installed at the lower end of the fixed plate, and the lens of the camera faces the liquid level of the water pipe, and the control module is electrically connected to the camera and configured as follows:

[0012] Get the image information fed back by the camera;

[0013] Based on the image information, recognition processing is performed to calculate the liquid level value of each water pipe;

[0014] Compare the liquid level values ​​of the two water pipes to obtain the liquid level difference;

[0015] The liquid level difference is compared with the preset allowable error value. If the liquid level difference is greater than the preset allowable error value, it is determined that the casing is skewed, and a preset matching prompt is output.

[0016] Optionally, two water pipes symmetrically arranged about the axis of the sleeve form a group, and multiple groups are provided, and the multiple water pipes are evenly arranged and distributed along the circumference of the fixed disk.

[0017] Optionally, a display is further included, the display is electrically connected to the control module, and the control module is configured as follows:

[0018] Establish a three-dimensional space coordinate system, and mark the liquid level of each water pipe in the three-dimensional space coordinate system;

[0019] A three-dimensional model is generated according to each punctuation point, and the display output is displayed.

[0020] Optionally, the control module is electrically connected to a control system of a rotary drilling rig and a control system of a full casing full rotary drilling rig, and the control module is configured as follows:

[0021] If it is determined that the casing is skewed, the rotary drilling rig and the full-casing full-rotation drilling rig are controlled to stop responding;

[0022] The central axis of the drill bit of the rotary drilling rig is checked. If the check result meets the preset verticality of the rotary drilling bit, the casing correction process is executed.

[0023] Optionally, the control module executes a casing deviation correction process, which includes:

[0024] Control the drill bit of the rotary drilling rig to lift out of the casing;

[0025] When a feedback signal is received after the prefabricated casing is installed on the drill bit, the drill bit of the rotary drilling rig is controlled to be lowered into the casing, and the drill bit is controlled to rotate until the liquid level difference meets the preset allowable error value, and then the drill bit is controlled to be lifted out of the casing.

[0026] Optionally, the sleeve includes an assembly sleeve, a ring and a locking piece, the ring is rotatably sleeved on the outer wall of the assembly sleeve, the assembly sleeve is sleeved on the outside of the drill bit of the rotary drilling rig, and the assembly sleeve is penetrated by a strip groove, the strip groove is aligned with the strip hole prefabricated in the drill wall of the drill bit of the rotary drilling rig, and the locking piece is penetrated and locked in the strip groove and the strip hole prefabricated in the drill bit of the rotary drilling rig.

[0027] In summary, the present application includes the following beneficial technical effects: water pipes are symmetrically embedded in the casing. When the casing is skewed, the liquid levels of the two water pipes will be different, so that the verticality of the casing can be judged by observing the liquid level difference of the water pipes, and adjustments can be made in time to reduce the probability of collision between the drill bit and the casing during drilling, thereby improving the work efficiency of rotary drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is an exploded view of the fixing plate and the bracket in the embodiment of the present application.

[0030] Figure 3 It is a cross-sectional view of the fixing plate and the bracket in the embodiment of the present application.

[0031] Figure 4 It is a structural diagram of the control module in the embodiment of the present application.

[0032] Figure 5 It is a schematic diagram of the structure of the sheath in the embodiment of the present application.

[0033] Figure 6It is a cross-sectional view of the assembly set and the drill bit in the embodiment of the present application.

[0034] Explanation of the reference numerals: 1. water pipe; 2. supporting mechanism; 3. sleeve; 31. channel; 21. bracket; 22. fixing plate; 211. embedding groove; 221. snap-in groove; 4. camera; 5. scale ring; 6. control module; 7. display; 8. sheath; 81. assembly set; 82. sleeve; 83. locking piece; 811. strip groove; 831. screw; 832. nut; 833. fixing block; 9. drill bit; 91. strip hole. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] An embodiment of the present application discloses a drilling detection system applied to a rotary drilling rig.

[0037] Reference Figure 1 and Figure 2 The drilling detection system used in the rotary drilling rig includes a water pipe 1 and a support mechanism 2. The water pipes 1 are arranged in multiple groups, and two are in a group, and are divided into multiple groups. The two water pipes 1 in each group are symmetrically arranged with respect to the axis of the casing 3. At the same time, the water pipes 1 are all transparent water pipes, and the length of each water pipe 1 is greater than the depth of the pile foundation. Before the casing 3 is screwed into the formation, it is necessary to open several channels 31 for the water supply pipes 1 to extend into the pipe wall of the casing 3 in advance, and the channels 31 are opened along the axial direction of the casing 3. Several channels 31 are evenly arranged and distributed along the circumference of the casing 3, and the number of channels 31 is consistent with the number of water pipes 1 set, so that each water pipe 1 is inserted into the channel 31 on the pipe wall of the casing 3. In order to be able to more smoothly insert the water pipe 1 into the pipe wall of the casing 3, one end of the water pipe 1 extending into the pipe wall of the casing 3 is filled with a counterweight block and is sealed.

[0038] Reference Figure 1 and Figure 2 , the support mechanism 2 is arranged outside the pile position and is used to guide the water pipe 1 so that the top of the water pipe 1 is located above the uppermost section of the casing 3, and liquid is injected from the top of the water pipe 1 so that the liquid surface is always higher than the upper end surface of the casing 3 in the uppermost section, and the difference in liquid levels between the two water pipes 1 is observed to determine whether the casing 3 is skewed. Secondly, the water pipe 1 and the support mechanism 2 are detachably connected. When installing the next section of the casing 3, the support mechanism 2 is first separated from the water pipe 1, and then the top of the water pipe 1 is extended into the channel 31 of the casing 3 to be installed, so that the casing 3 to be installed is assembled with the previous section of the casing 3, and then the top of the water pipe 1 is fixed to the support mechanism 2. At the same time, liquid needs to be continuously injected into the water pipe 1 so that the liquid surface is always higher than the upper surface of the uppermost section of the casing 3, so as to facilitate the observation of the liquid level. The water injected into the water pipe 1 should be equal each time.

[0039] Through the above arrangement, the water pipes 1 are symmetrically embedded in the casing 3. When the casing 3 is skewed, the liquid levels of the two water pipes 1 will be different, so that the verticality of the casing 3 can be judged by observing the liquid levels of the water pipes 1, and adjustments can be made in time to reduce the probability of collision between the drill bit 9 and the casing 3 during drilling, thereby improving the working efficiency of rotary drilling.

[0040] Reference Figure 2 The support mechanism 2 includes a bracket 21 and a fixed plate 22. The bracket 21 is vertically mounted on the outside of the pile hole, and the bracket 21 is composed of a plurality of legs and a circular frame integrally formed at the upper ends of the plurality of legs. The bottoms of the plurality of legs are fixedly mounted on the roadbed plate through bolt bases, and an embedding groove 211 is provided on the inner side of the circular frame of the bracket 21 along its circumference. The fixed plate 22 is abutted and placed in the embedding groove 211, so that the fixed plate 22 is located above the uppermost section of the casing 3. The cross-section of the fixed plate 22 is annular, and the inner diameter of the fixed plate 22 is larger than the diameter of the drill bit 9 of the rotary drilling rig, so that it will not affect the drill bit 9 from extending into the casing 3 to take soil.

[0041] Reference Figure 2 At the same time, the fixed disk 22 is provided with a plurality of clamping grooves 221 along its radial direction for clamping the top of the water pipe 1, and the plurality of clamping grooves 221 are evenly arranged and distributed along the circumference of the fixed disk 22 and correspond one-to-one to the positions of the water pipe 1, so that each water pipe 1 is clamped into a clamping groove 221. In this embodiment, a pipe clamp (not shown) can be installed on the upper surface of the fixed disk 22 and above each clamping groove 221, and the groove width of the clamping groove 221 is larger than the diameter of the water pipe 1. After the top of the water pipe 1 is placed in the clamping groove 221, the water pipe 1 is clamped by the pipe clamp, thereby realizing detachable fixation between the water pipe 1 and the fixed disk 22; in other embodiments, the clamping can also be realized by interference fit between the clamping groove 221 and the water pipe 1.

[0042] Reference Figure 2 and Figure 3 In another embodiment of the present application, in order to more conveniently observe the liquid level of each water pipe 1, the following is set:

[0043] The system also includes a camera 4, a scale ring 5 and a control module 6, and a colored liquid is injected into the water pipe 1, which can be water injected into the water pipe 1 first, and then a colored dye is dripped in. Among them, the upper end of the scale ring 5 is coaxially fixed to the lower surface of the fixed disk 22, and multiple water pipes 1 are located inside the scale ring 5, and the inner wall of the scale ring 5 is provided with scale lines (not shown in the figure), and the scale lines are arranged in a circle along the inner wall of the scale ring 5. Multiple cameras 4 are set, and the camera 4 is fixedly installed on the lower end of the fixed disk 22 through a suspension rod and is arranged one by one with each water pipe 1, so that the lens of each camera 4 is facing the liquid level of the corresponding water pipe 1 for observation, and the camera 4 is electrically connected to the control module 6.

[0044] Reference Figure 4 , wherein the control module 6 includes a control mainboard and is configured as follows:

[0045] Obtain image information fed back by camera 4;

[0046] Based on the image information, recognition processing is performed to calculate the liquid level value of each water pipe 1;

[0047] Compare the liquid level values ​​of the two water pipes 1 to obtain the liquid level difference;

[0048] The liquid level difference is compared with a preset allowable error value. If the liquid level difference is greater than the preset allowable error value, it is determined that the sleeve 3 is skewed, and a preset matching prompt is output.

[0049] It can be understood that since each camera 4 captures the liquid level of the corresponding water pipe 1, it is necessary to group every two symmetrically arranged water pipes 1 to compare the liquid level difference between the two. In order to prevent data comparison errors, each camera 4 is first labeled and defined, and the labels of the two cameras 4 corresponding to each group of water pipes 1 are recorded to form a correspondence table between each group of water pipes 1 and the camera 4. After the video data collected by each camera 4 is processed by image recognition, the images fed back by the two labeled cameras 4 corresponding to each group of water pipes 1 are retrieved, and the liquid level of the water pipe 1 is compared with the scale line on the scale ring 5 to obtain the corresponding liquid level value of the two water pipes 1. The liquid level difference is calculated. If the liquid level difference exceeds the allowable error value (for example: 1 cm), it is determined that the casing 3 is skewed, and a matching prompt is output. The matching prompt can be an alarm through a preset alarm to remind the staff.

[0050] Reference Figure 4 In another embodiment of the present application, in order to more intuitively display the liquid level of each water pipe 1, the system further includes a display 7, the display 7 is electrically connected to the control module 6, and the control module 6 is configured as follows:

[0051] Establishing a three-dimensional space coordinate system, and marking the liquid level of each water pipe 1 in the three-dimensional space coordinate system;

[0052] It can be understood that, according to the specific position and liquid level height of the water pipe 1, the corresponding three-dimensional coordinate points are defined.

[0053] A three-dimensional model is generated according to each punctuation point, and the display 7 is made to output and display.

[0054] It can be understood that the three-dimensional coordinate point data of each water pipe 1 is used to construct a three-dimensional model by using modeling software.

[0055] Through the above arrangement, the liquid level of each water pipe 1 can be directly checked through the display 7, so that the staff can grasp the drilling status of the casing 3 in time.

[0056] In another embodiment of the present application, the control module 6 is electrically connected to the control system of the rotary drilling rig and the control system of the full casing full rotary drilling rig, and the control module 6 is configured as follows:

[0057] If it is determined that the casing 3 is skewed, the rotary drilling rig and the full casing 3 full rotary drilling rig are controlled to stop responding;

[0058] The central axis of the drill bit 9 of the rotary drilling rig is checked. If the check result meets the preset verticality of the rotary drilling bit (for example: within 1% degree), the casing correction process is executed.

[0059] It can be understood that when it is determined that the casing 3 is skewed, the rotary drilling rig and the full-casing full-rotation drilling rig are first stopped, and the staff first checks the verticality of the drill rod of the rotary drilling rig through a total station to check whether the verticality is within 1% of the allowable verticality deviation. If it is within the allowable verticality deviation, it means that the skewness of the casing 3 is not caused by the skewness of the drill bit 9 of the rotary drilling rig, but the skewness of the casing 3 itself during the drilling process, and the casing 3 needs to be corrected.

[0060] The control module 6 executes the casing deviation correction process, which includes:

[0061] Control the drill bit 9 of the rotary drilling rig to lift out of the casing 3;

[0062] When the feedback signal is received after the prefabricated casing 8 is installed on the drill bit 9, the drill bit 9 of the rotary drilling rig is controlled to be lowered into the casing 3, and the drill bit 9 is controlled to rotate until the liquid level difference meets the preset allowable error value, and then the drill bit 9 is controlled to be lifted out of the casing 3.

[0063] Through the above arrangement, when it is necessary to correct the deviation of the casing 3, the drill bit 9 is first lifted out of the casing 3, and then the prefabricated sleeve 8 is installed on the drill bit 9. After the installation is completed, the drill bit 9 with the sleeve 8 can be lowered into the casing 3 by pressing a specific button prefabricated on the rotary drilling rig control platform, or by directly pressing the lowering start button on the rotary drilling rig control platform. When the drill bit 9 drills downward, due to the tilting of the casing 3, the sleeve 8 on the drill bit 9 will contact the inner wall of the casing 3 and exert a force on the inner wall of the casing 3. When the liquid difference meets the preset allowable error value, the drill bit 9 stops running, completing the casing correction process, and the drill bit 9 is lifted out of the casing 3, and the sleeve 8 is removed by the staff. After that, the rotary drilling rig and the full-casing full-rotation drilling rig continue to drill.

[0064] Reference Figure 5 and Figure 6, wherein the structure of the sheath 8 is arranged as follows:

[0065] The sheath 8 comprises an assembly sleeve 81, a collar 82 and a locking piece 83. The collar 82 is rotatably sleeved on the outside of the assembly sleeve 81. The assembly sleeve 81 is sleeved on the outside of the drill bit 9 of the rotary drilling rig. The assembly sleeve 81 is penetrated by a strip groove 811.

[0066] The locking member 83 includes a screw rod 831, a nut 832 and a fixing block 833. The fixing block 833 is in the shape of an elongated strip and is welded to one end of the screw rod 831. The size of the fixing block 833 is smaller than the size of the strip groove 811, so that the fixing block 833 can be inserted into the strip groove 811. Since the drill bit 9 of the rotary drilling rig usually has a prefabricated strip hole 91 when drilling the wall, in this embodiment, the size of the strip groove 811 is consistent with the size of the strip hole 91 of the drill bit 9, so that the size of the fixing block 833 is also smaller than the size of the strip hole 91, so that when the sheath 8 needs to be installed, the assembly is first assembled. The sleeve 81 is sleeved on the outside of the drill bit 9 so that the strip groove 811 is aligned with the strip hole 91 of the drill bit 9, so that the fixing block 833 can be simultaneously inserted into the strip groove 811 and the strip hole 91 of the drill bit 9 of the rotary drilling rig. Then, the fixing block 833 is rotated so that the fixing block 833 is misaligned with the strip groove 811 and the strip hole 91 on the drill bit 9, that is, the length direction of the fixing block 833 intersects with the length direction of the strip hole 91, and the fixing block 833 cannot be removed. Then, the nut 832 is threadedly sleeved on the screw rod 831, and the nut 832 is pressed against the outer wall of the assembly sleeve 81, so that the assembly sleeve 81 and the drill bit 9 are fixed.

[0067] The collar 82 and the assembly sleeve 81 are connected via a bearing and the end faces are sealed to prevent mud from entering between the collar 82 and the assembly sleeve 81 .

[0068] When the rotary drilling rig is turned on and operates downward, the drill bit 9 rotates, causing the assembly sleeve 81 to rotate synchronously. Since the collar 82 is rotatably connected to the assembly sleeve 81, the collar 82 can be fixed relative to the assembly sleeve 81; when the collar 82 contacts the inner wall of the casing 3 and a force is applied to the casing 3 to correct the deviation, the collar 82 does not rotate with the drill bit 9, thereby solving the problem of scratches caused by the drill bit 9 directly contacting the inner wall of the casing 3 and reducing damage to the inner wall of the casing 3 during the correction process.

[0069] It should be noted that after the sleeve 8 is installed, the drill bit 9 can still penetrate the inner ring of the fixed disk 22 and the inside of the sleeve 3; secondly, considering that the screw 831 may be displaced up and down in the strip groove 811, which may affect the stability of the drill bit 9 when applying force to the inner wall of the sleeve 3, the diameter of the screw 831 can be set larger than the width of the strip groove 811, and arc grooves for limiting the screw 831 are respectively opened on the inner walls on both sides of the middle of the strip groove 811, so that the screw 831 can be located in the arc groove, thereby limiting the movement of the screw 831 in the strip groove 811, so that the sleeve 8 as a whole will not be displaced up and down relative to the drill bit 9.

[0070] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drilling detection system applied to a rotary drilling rig, characterized in that: The invention comprises a water pipe (1) and a support mechanism (2). The water pipes (1) are arranged in pairs and are transparent water pipes. The two water pipes (1) are arranged symmetrically about the axis of a casing (3). The two water pipes (1) are embedded and extend into a channel (31) pre-opened along the axial direction of the casing (3) wall. One end of the water pipe (1) extending into the casing (3) wall is filled with a counterweight and sealed. The support mechanism (2) is arranged outside the pile position and is used to guide the water pipe (1) so that the top of the water pipe (1) is located above the casing (3). The support mechanism (2) is detachably connected to the water pipe (1). Liquid is injected into the top of the water pipe (1) so that the liquid surface is always higher than the upper end surface of the casing (3) at the uppermost section, and the liquid level difference between the two water pipes (1) is observed.

2. The drilling detection system for rotary drilling rig according to claim 1 is characterized in that: The support mechanism (2) comprises a bracket (21) and a fixing plate (22). The bracket (21) is mounted on the outside of the pile hole. An embedding groove (211) is provided on the inner side of the upper end of the bracket (21). The fixing plate (22) is placed in the embedding groove (211). The fixing plate (22) is located above the casing (3). The fixing plate (22) has a circular ring shape in cross section. The inner diameter of the fixing plate (22) is larger than the diameter of the drill bit (9) of the rotary drilling rig. The fixing plate (22) is provided with a clamping groove (221) along its radial direction for clamping the top of the water pipe (1).

3. The drilling detection system for rotary drilling rig according to claim 2 is characterized in that: The device also comprises a camera (4), a scale ring (5) and a control module (6); a colored liquid is injected into the water pipe (1); the scale ring (5) is coaxially fixed to the lower surface of the fixed plate (22), and the scale ring (5) is sleeved outside the water pipe (1); the inner wall of the scale ring (5) is provided with scale lines; a plurality of cameras (4) are provided, the camera (4) is mounted at the lower end of the fixed plate (22), and the lens of the camera (4) faces the liquid level of the water pipe (1); the control module (6) is electrically connected to the camera (4) and is configured as follows: Obtaining image information fed back by the camera (4); Performing recognition processing based on the image information to calculate the liquid level value of each water pipe (1); Comparing the liquid level values ​​of the two water pipes (1) to obtain a liquid level difference; The liquid level difference is compared with a preset allowable error value. If the liquid level difference is greater than the preset allowable error value, it is determined that the sleeve (3) is skewed, and a preset matching prompt is output.

4. The drilling detection system for rotary drilling rig according to claim 2 is characterized in that: Two water pipes (1) symmetrically arranged about the axis of the sleeve (3) form a group, and multiple groups are provided, and the multiple water pipes (1) are evenly arranged and distributed along the circumference of the fixed disk (22).

5. The drilling detection system for rotary drilling rig according to claim 3 is characterized in that: It also includes a display (7), wherein the display (7) is electrically connected to the control module (6), and the control module (6) is configured as follows: Establishing a three-dimensional space coordinate system, and marking the liquid level of each water pipe (1) in the three-dimensional space coordinate system; A three-dimensional model is generated according to each punctuation point, and a display (7) is used for output display.

6. The drilling detection system for rotary drilling rig according to claim 3 is characterized in that: The control module (6) is electrically connected to the control system of the rotary drilling rig and the control system of the full casing full rotary drilling rig, and the control module (6) is configured as follows: If it is determined that the casing (3) is skewed, the rotary drilling rig and the full-casing full-rotation drilling rig are controlled to stop responding; The central axis of the drill bit (9) of the rotary drilling rig is checked, and if the check result meets the preset verticality of the rotary drilling bit, the casing deviation correction process is executed.

7. The drilling detection system for rotary drilling rig according to claim 6 is characterized in that: The control module (6) executes a casing deviation correction process, which includes: Controlling the drill bit (9) of the rotary drilling rig to be lifted out of the casing (3); When a signal fed back after the prefabricated casing (8) is installed on the drill bit (9) is received, the drill bit (9) of the rotary drilling rig is controlled to be lowered into the casing (3), and the drill bit (9) is controlled to be rotated until the liquid level difference meets the preset allowable error value, and then the drill bit (9) is stopped and the drill bit (9) is controlled to be lifted out of the casing (3).

8. The drilling detection system for rotary drilling rig according to claim 7, characterized in that: The protective sleeve (8) comprises an assembly sleeve (81), a sleeve ring (82) and a locking piece (83); the sleeve ring (82) is rotatably sleeved on the outer wall of the assembly sleeve (81); the assembly sleeve (81) is sleeved on the outside of a drill bit (9) of a rotary drilling rig; a strip groove (811) is formed through the assembly sleeve (81); the strip groove (811) is aligned with a strip hole (91) prefabricated in the drilling wall of the drill bit (9) of the rotary drilling rig; and the locking piece (83) is penetrated and locked in the strip groove (811) and the strip hole (91) prefabricated in the drill bit (9) of the rotary drilling rig.

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