Drilling Detection System Applied to Rotary Drilling Rig

Abstract

The present invention discloses a drilling detection system applied to a rotary drilling rig, which relates to the technical field of rotary drilling rigs. The system includes water pipes and a support mechanism. The water pipes are arranged in pairs and are transparent water pipes. The two water pipes are symmetrically arranged with respect to the axis of the casing, and the two water pipes are embedded and extend into a channel pre-axially penetrated through the casing wall. One end of the water pipe extending into the casing wall is filled with a counterweight block and is sealed. The support mechanism is arranged outside the pile position and is used to guide the water pipes so that the tops of the water pipes are located above the casing, and the support mechanism is detachably connected to the water pipes. Liquid is injected into the tops of the water pipes so that the liquid surface is always higher than the upper end surface of the uppermost section of the casing, and the liquid level difference between the two water pipes is observed. This application has the effect of being able to improve the working efficiency of rotary drilling.

Description

Technical Field

[0001] This 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 the process of engineering construction, and can be used to dig holes for constructing 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 into deep soil layers need to be constructed. In this process, a rotary drilling rig is required. The operation process is as follows:

[0004] First, the pile position is lofted. Then, the subgrade slab is placed and the center of the subgrade slab is aligned with the center of the pile position. Then, the full casing full rotation drilling rig is placed on the subgrade slab, and the first section of the casing is lifted by a crane. The first section of the casing is clamped by the full casing full rotation drilling rig, and the lower end of the casing is rotated and pressed into the required depth of the formation. After that, the drill bit of the rotary drilling rig is inserted into the casing to take soil. While rotary drilling to take soil, the casing is continuously pressed into the formation. After the first section of the casing is drilled in place, the second section of the casing is installed, and the rotation and pressing, rotary drilling to take soil are repeated until the design depth. Then, the rotary drilling rig is used to clean the hole, and then the steel reinforcement cage is lowered, and then concrete is poured. Finally, the casing is completely 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, then the rotary drill is used to take out the soil and stone from the middle. After that, as the casing goes deeper, another section of the casing is spliced from above. During the process, the drill bit and drill pipe of the rotary drilling rig are repeatedly lowered and lifted. And due to factors such as uneven geology, the casing may be skewed, and the drill bit itself may also be skewed due to factors such as transmission clearance. Therefore, during the drilling process, the drill bit and the casing may collide, causing more serious casing inclination, and then resulting in rework operations such as re-lowering the casing, which affects the construction efficiency. Therefore, this application proposes a new technical solution. Summary of the Invention

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

[0008] This application provides a drilling detection system applied to rotary drilling rigs, adopting the following technical solutions:

[0009] A drilling detection system applied to a rotary drilling rig, comprising a water pipe and a support mechanism. The water pipes are arranged in pairs and are transparent water pipes. The two water pipes are symmetrically arranged with respect to the axis of the casing, and the two water pipes are embedded and extended into a channel axially penetrated along the casing wall in advance. One end of the water pipe extending into the casing wall is filled with a counterweight block and is sealed. The support 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 support 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 uppermost section of the casing, and the liquid level difference between the two water pipes is observed.

[0010] Optionally, the support mechanism includes a bracket and a fixing plate. The bracket is erected outside the orifice of the pile hole. An embedding groove is provided inside the upper end of the bracket. The fixing plate is placed in the embedding groove and is located above the casing. The cross section of the fixing plate is circular ring-shaped. The inner diameter of the fixing plate is larger than the diameter of the drill bit of the rotary drilling rig. A clamping groove for clamping the top of the water pipe is provided along the radial direction of the fixing plate.

[0011] Optionally, it further includes a camera, a scale ring and a control module. A colored liquid is injected into the water pipe. The scale ring is coaxially fixed to the lower surface of the fixing plate and is sleeved outside the water pipe. Scale lines are provided on the inner wall of the scale ring. A plurality of cameras are provided. The cameras are installed at the lower end of the fixing plate, and the lenses of the cameras face the liquid level of the water pipe. The control module is electrically connected to the camera and is configured to:

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

[0013] Based on the image information, perform recognition processing and calculate the liquid level values of each water pipe;

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

[0015] Compare the liquid level difference with a 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, the two water pipes symmetrically arranged with respect to the casing axis are taken as a group, and multiple groups are provided, and the multiple water pipes are evenly arranged and distributed along the circumference of the fixing plate.

[0017] Optionally, it further includes a display. The display is electrically connected to the control module. The control module is configured to:

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

[0019] Generate a three-dimensional model according to each mark and make the display output and display.

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

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

[0022] Check the central axis of the drill bit of the rotary drilling rig. If the check result meets the preset perpendicularity of the rotary drill bit, execute the casing deviation correction process.

[0023] Optionally, when the control module executes the casing deviation correction process, it includes:

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

[0025] When receiving the signal fed back after installing the prefabricated sheath on the drill bit, control the drill bit of the rotary drilling rig to lower into the casing, and control the drill bit to rotate and dig until the liquid level difference meets the preset allowable error value, then stop and control the drill bit to lift out of the casing.

[0026] Optionally, the sheath includes a fitting sleeve, a collar and a locking member. The collar is rotatably sleeved on the outer wall of the fitting sleeve. The fitting sleeve is sleeved on the outside of the drill bit of the rotary drilling rig, and the fitting sleeve is provided with a strip-shaped groove through it. The strip-shaped groove is aligned with the strip-shaped hole prefabricated on the drill wall of the drill bit of the rotary drilling rig, and the locking member is inserted and locked in the strip-shaped groove and the strip-shaped hole prefabricated on 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. Therefore, the perpendicularity of the casing can be judged by observing the liquid level difference of the water pipes, and then timely adjustments can be made to reduce the probability of collision between the drill bit and the casing during the drilling process, thereby improving the working efficiency of rotary drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0029] Figure 2 is the exploded view of the fixed disk and the bracket in the embodiment of the present application.

[0030] Figure 3 is the sectional view of the fixed disk and the bracket in the embodiment of the present application.

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

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

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

[0034] Explanation of reference numerals: 1, water pipe; 2, support mechanism; 3, casing; 31, channel; 21, bracket; 22, fixing plate; 211, groove; 221, clamping groove; 4, camera; 5, scale ring; 6, control module; 7, display; 8, sheath; 81, fitting sleeve; 82, collar; 83, locking member; 811, strip-shaped groove; 831, screw; 832, nut; 833, fixing block; 9, drill bit; 91, strip-shaped hole. Detailed implementation manners

[0035] The following will Figures 1-6 further elaborate on the present application in detail.

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

[0037] Referring to Figure 1 and Figure 2 , the drilling detection system applied to a rotary drilling rig includes a water pipe 1 and a support mechanism 2. A plurality of water pipes 1 are provided, and two of them are in a group, 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 to be dug. Before the casing 3 is screwed into the formation, a number of channels 31 for the water pipes 1 to extend into need to be opened in the pipe wall of the casing 3 in advance. The channels 31 are axially penetrated along the casing 3, and a number of channels 31 are evenly arranged along the circumferential direction of the casing 3. The number of channels 31 is the same as the number of the provided water pipes 1, so that each water pipe 1 penetrates and extends into the channels 31 on the pipe wall of the casing 3. In order to more smoothly extend 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 hermetically arranged.

[0038] Referring to 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. Liquid is injected from the top of the water pipe 1 and the liquid surface is always higher than the upper end surface of the uppermost section of the casing 3. By observing the liquid level difference between the two water pipes 1, it is judged 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, first separate the support mechanism 2 from the water pipe 1, then extend the top of the water pipe 1 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. Then fix the top of the water pipe 1 to the support mechanism 2. At the same time, liquid also 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, which is convenient for observing the liquid level. The amount of water injected into the water pipe 1 each time should be equal.

[0039] With the above settings, 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. Thus, the perpendicularity of the casing 3 can be judged by observing the liquid levels of the water pipes 1, and then timely adjustments can be made to reduce the probability of the drill bit 9 colliding with the casing 3 during the drilling process, thereby improving the working efficiency of rotary drilling.

[0040] Referring to Figure 2 , wherein, the support mechanism 2 includes a bracket 21 and a fixing plate 22. The bracket 21 is vertically erected on the outer side of the pile hole orifice, and the bracket 21 is composed of a plurality of support legs and a circular frame integrally formed at the upper ends of the plurality of support legs. The bottoms of the plurality of support legs are fixedly installed on the roadbed plate through bolt bases, and an embedding groove 211 is formed along the circumference on the inner side of the circular frame of the bracket 21. The fixing plate 22 is placed in contact with the embedding groove 211, so that the fixing plate 22 is located above the uppermost section of the casing 3. The cross-section of the fixing plate 22 is circular-ring-shaped, and the inner diameter of the fixing plate 22 is larger than the diameter of the drill bit 9 of the rotary drilling rig, so as not to affect the drill bit 9 extending into the casing 3 to take soil.

[0041] Referring to Figure 2 , at the same time, a plurality of clamping grooves 221 for clamping the tops of the water pipes 1 are formed along the radial direction of the fixing plate 22, and the plurality of clamping grooves 221 are evenly arranged along the circumference of the fixing plate 22 and correspond to the positions of the water pipes 1 one by one, so that each water pipe 1 is clamped into one clamping groove 221. In this embodiment, it can be realized by installing a pipe clamp (not shown in the figure) on the upper surface of the fixing plate 22 and above each clamping groove 221, and the groove width of the clamping groove 221 is larger than the pipe 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, so as to realize the detachable fixation between the water pipe 1 and the fixing plate 22; in other embodiments, it can also be realized by the interference fit between the clamping groove 221 and the water pipe 1.

[0042] Referring to Figure 2 And Figure 3 , in another embodiment of the present application, in order to be able to more conveniently observe the liquid levels of each water pipe 1, the following settings are made:

[0043] This system further includes a camera 4, a scale ring 5 and a control module 6, and a colored liquid is injected into the water pipe 1. It can be to first inject water into the water pipe 1 and then drop in a colored dye. Among them, the upper end of the scale ring 5 is coaxially fixed to the lower surface of the fixing plate 22, and a plurality of water pipes 1 are all located inside the scale ring 5. Scale lines (not shown in the figure) are provided on the inner wall of the scale ring 5, and the scale lines are arranged in a circle along the circumference of the inner wall of the scale ring 5. A plurality of cameras 4 are provided, and the cameras 4 are fixedly installed at the lower end of the fixing plate 22 through a suspension rod and are arranged in one-to-one correspondence with each water pipe 1, so that the lens of each camera 4 faces the liquid level of the corresponding water pipe 1 for observation. The camera 4 is electrically connected to the control module 6.

[0044] Refer to Figure 4 , wherein, the control module 6 includes a control main board and is configured to:

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

[0046] Perform recognition processing based on the image information, and calculate the liquid level values of each water pipe 1;

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

[0048] Compare the liquid level difference with a preset allowable error value. If the liquid level difference is greater than the preset allowable error value, it is determined that the casing 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, and then the liquid level differences of every two symmetrically arranged water pipes 1 need to be compared in a group. To prevent incorrect data comparison, first, each camera 4 is numbered and defined, and the numbers of the two corresponding cameras 4 in each group of water pipes 1 are recorded to form a corresponding relationship table between each group of water pipes 1 and the cameras 4. Thus, after the video data collected by each camera 4 is processed through image recognition, by retrieving the images fed back by the two numbered cameras 4 corresponding to each group of water pipes 1, by comparing the liquid level of the water pipe 1 with the scale lines on the scale ring 5, the liquid level values of the corresponding two water pipes 1 are obtained, and 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 to alarm through a preset alarm to remind the staff.

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

[0051] Establish a three-dimensional space coordinate system, and mark the liquid levels 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] Generate a three-dimensional model according to each marked point, and make the display 7 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] With the above settings, the liquid level of each water pipe 1 can be directly viewed through the display 7, which is convenient for the staff to timely understand the drilling situation of the casing 3.

[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 rotation drilling rig, and the control module 6 is configured as:

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

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

[0059] It can be understood that when it is determined that the casing 3 is skewed, first stop the rotary drilling rig and the full casing full rotation drilling rig, and first let the staff check the perpendicularity of the drill pipe of the rotary drilling rig through a total station. Check whether the perpendicularity is within 1% degree of the allowable perpendicularity deviation. If it is within the allowable perpendicularity deviation, it means that the skew of the casing 3 is not caused by the skew of the drill bit 9 of the rotary drilling rig, but the skew of the casing 3 itself during the drilling process, then the casing 3 needs to be corrected.

[0060] Among them, regarding the control module 6 to execute the casing deviation correction process, it includes:

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

[0062] When receiving the signal fed back after installing the prefabricated sheath 8 on the drill bit 9, control the drill bit 9 of the rotary drilling rig to be lowered into the casing 3, and control the drill bit 9 to rotate and dig until the liquid level difference meets the preset allowable error value and then stop and control the drill bit 9 to be lifted out of the casing 3.

[0063] With the above settings, when the casing 3 needs to be corrected, first lift the drill bit 9 out of the casing 3, then install the prefabricated sheath 8 on the drill bit 9. After the installation is completed, by pressing the specific button prefabricated on the control platform of the rotary drilling rig, or directly pressing the lowering start button of the control platform of the rotary drilling rig, the drill bit 9 with the sheath 8 is lowered into the casing 3. While the drill bit 9 is drilling downward, due to the skew of the casing 3, the sheath 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, completes the casing deviation correction process, and lifts the drill bit 9 out of the casing 3. Then the staff removes the sheath 8, and then the rotary drilling rig and the full casing full rotation drilling rig continue the drilling work.

[0064] Refer to Figure 5 And Figure 6, wherein the structure of the sheath 8 is set as follows:

[0065] The sheath 8 includes a fitting sleeve 81, a collar 82 and a locking member 83. The collar 82 is rotatably sleeved outside the fitting sleeve 81. The fitting sleeve 81 is sleeved outside the drill bit 9 of the rotary drilling rig. The fitting sleeve 81 is provided with a strip-shaped groove 811 through it.

[0066] The locking member 83 includes a screw 831, a nut 832 and a fixing block 833. The fixing block 833 is in a long strip shape, and the fixing block 833 is welded to one end of the screw 831. The size of the fixing block 833 is smaller than the size of the strip-shaped groove 811, so that the fixing block 833 can be passed through the strip-shaped groove 811. Since the drill wall of the drill bit 9 of the rotary drilling rig is usually prefabricated with a strip-shaped hole 91, in this embodiment, the size of the strip-shaped groove 811 is made the same as the size of the strip-shaped 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-shaped hole 91. When installing the sheath 8, first sleeve the fitting sleeve 81 outside the drill bit 9, align the strip-shaped groove 811 with the strip-shaped hole 91 of the drill bit 9, so that the fixing block 833 can be passed through the strip-shaped groove 811 and the strip-shaped hole 91 of the drill bit 9 of the rotary drilling rig at the same time. Then rotate the fixing block 833 to make the fixing block 833 misaligned with the strip-shaped groove 811 and the strip-shaped 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-shaped hole 91, and the fixing block 833 cannot be taken out. Then thread the nut 832 on the screw 831 and press the nut 832 against the outer wall of the fitting sleeve 81, so as to fix the fitting sleeve 81 and the drill bit 9.

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

[0068] When the rotary drilling rig is started and operates downward, the drill bit 9 rotates, causing the fitting sleeve 81 to rotate synchronously. Since the collar 82 and the fitting sleeve 81 are rotatably connected, the collar 82 can be non-rotating relative to the fitting sleeve 81. When the inner wall of the casing 3 is contacted through the collar 82 and a force is applied to the casing 3 for deviation correction, the collar 82 does not rotate together with the drill bit 9, so that the problem of scraping caused by the direct contact between the drill bit 9 and the inner wall of the casing 3 can be solved, and the damage to the inner wall of the casing 3 during the deviation correction process can be reduced.

[0069] It should be noted that after the sheath 8 is installed, the drill bit 9 can still pass through the inner ring of the fixing plate 22 and the inside of the casing 3. Secondly, considering that the screw 831 may move up and down in the strip-shaped groove 811, which may affect the stability of the drill bit 9 when applying force to the inner wall of the casing 3. Therefore, the diameter of the screw 831 can be set to be larger than the width of the strip-shaped groove 811, and arc-shaped grooves for limiting the screw 831 are respectively formed on the inner walls on both sides of the middle of the strip-shaped groove 811, so that the screw 831 can be located in the arc-shaped grooves, thereby restricting the movement of the screw 831 in the strip-shaped groove 811 and preventing the overall sheath 8 from moving 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 thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A drilling detection system applied to a rotary drilling rig, characterized in that: It includes 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 symmetrically arranged with respect to the axis of the sleeve (3), and the two water pipes (1) are embedded and extend into a channel (31) axially penetrating through the wall of the sleeve (3) in advance. One end of the water pipe (1) extending into the wall of the sleeve (3) is filled with a counterweight block and is 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 sleeve (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 uppermost section of the sleeve (3), and the liquid level difference between the two water pipes (1) is observed; The support mechanism (2) includes a bracket (21) and a fixing disk (22). The bracket (21) is erected outside the orifice of the pile hole. An embedding groove (211) is opened inside the upper end of the bracket (21). The fixing disk (22) is placed in the embedding groove (211), and the fixing disk (22) is located above the sleeve (3). The cross section of the fixing disk (22) is circular-ring-shaped. The inner diameter of the fixing disk (22) is larger than the diameter of the drill bit (9) of the rotary drilling rig. A clamping groove (221) for clamping the top of the water pipe (1) is opened along the radial direction of the fixing disk (22); It also includes 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 fixing disk (22), and the scale ring (5) is sleeved outside the water pipe (1). Scale lines are provided on the inner wall of the scale ring (5). A plurality of cameras (4) are provided. The cameras (4) are installed at the lower end of the fixing disk (22), and the lenses of the cameras (4) face the liquid level of the water pipe (1). The control module (6) is electrically connected to the cameras (4) and is configured as follows: Obtain the image information fed back by the camera (4); Based on the image information, perform recognition processing and calculate the liquid level values of each water pipe (1); Compare the liquid level values of the two water pipes (1) to obtain the liquid level difference; Compare the liquid level difference 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; The two water pipes (1) symmetrically arranged with respect to the axis of the sleeve (3) are taken as a group, and multiple groups are provided. The multiple water pipes (1) are evenly arranged and distributed along the circumference of the fixing disk (22); It also includes a display (7). The display (7) is electrically connected to the control module (6). The control module (6) is configured as follows: Establish a three-dimensional space coordinate system and mark the liquid levels of each water pipe (1) in the three-dimensional space coordinate system; Generate a three-dimensional model according to each mark and make the display (7) output and display; 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 rotation drilling rig. The control module (6) is configured as follows: If it is determined that the sleeve (3) is skewed, then control the rotary drilling rig and the full casing full rotation drilling rig to stop responding; Check the central axis of the drill bit (9) of the rotary drilling rig. If the check result meets the preset perpendicularity of the rotary drilling bit, execute the casing deviation correction process; The control module (6) executes the casing deviation correction process, which includes: Control the drill bit (9) of the rotary drilling rig to lift out of the casing (3); When receiving the signal feedback after installing the prefabricated sheath (8) on the drill bit (9), control the drill bit (9) of the rotary drilling rig to lower into the casing (3), and control the drill bit (9) to rotate and dig until the liquid level difference meets the preset allowable error value, then stop and control the drill bit (9) to lift out of the casing (3).

2. The drilling detection system applied to a rotary drilling rig according to claim 1, wherein: The sheath (8) includes a fitting sleeve (81), a collar (82) and a locking member (83). The collar (82) is rotatably sleeved on the outer wall of the fitting sleeve (81). The fitting sleeve (81) is sleeved outside the drill bit (9) of the rotary drilling rig, and the fitting sleeve (81) is provided with a strip-shaped groove (811) penetrating therethrough. The strip-shaped groove (811) is aligned with the strip-shaped hole (91) prefabricated on the drill wall of the drill bit (9) of the rotary drilling rig, and the locking member (83) is inserted and locked in the strip-shaped groove (811) and the strip-shaped hole (91) prefabricated on the drill bit (9) of the rotary drilling rig.

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