Tunnel construction drilling device and construction method thereof

Abstract

The invention relates to a tunnel construction drilling device and a construction method thereof, and belongs to the technical field of tunnel construction.The tunnel construction drilling device comprises a drilling device body, a drill rod and a drill bit, the drill bit is arranged at the end of the drill rod, the drill rod is arranged at the power end of the drilling device body, the drilling device body is used for driving the drill rod to rotate to conduct drilling operation, and a mounting cavity is formed in the drill rod; a cutting opening communicated with the mounting cavity is formed in the inner side of the drill rod, a cutting device and a driving device are arranged in the drill rod, the driving device is used for driving the cutting device to move along the mounting cavity and move out of the cutting opening to abut against the sample, and the cutting device is used for cutting the sample when the drill rod rotates. The device has the effect of improving the sampling integrity of sample drilling.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and in particular to a tunnel construction drilling device and a construction method thereof. Background Art

[0002] A tunnel construction drilling device is a device used for drilling operations during tunnel construction. It is usually composed of a drill rig, a drill rod, a drill bit and other components. The drill rig drives the drill bit to perform drilling operations by rotating the drill rod. The drilling device can select different types of drill bits according to different construction needs, such as rock drill bits, soil drill bits, etc. During tunnel construction, it is often necessary to test the ground soil. By testing the ground soil, the nature, layer, stability, etc. of the soil can be understood to determine the engineering measures and technical solutions required for tunnel construction. Generally, a drilling device is used to sample the ground soil.

[0003] At present, after the drill rod drills to the required depth, the rock and soil samples cannot be taken out with the drill bit because the sample inside the drill rod is integrated with the soil layer at the sampling location. The drill bit needs to be shaken, and the shaking of the drill bit causes the sample to be disconnected from the soil layer at the sampling location.

[0004] However, shaking the drill bit can easily cause the rock and soil samples to loosen and break, affecting the integrity of the rock and soil samples, resulting in large errors in the measurement data of the rock and soil samples, making it impossible to accurately judge the geological conditions of the rock and soil layers. Summary of the invention

[0005] In order to improve the integrity of sample drilling sampling, the present application provides a tunnel construction drilling device and a construction method thereof.

[0006] In the first aspect, the present application provides a tunnel construction drilling device, which adopts the following technical solution: A tunnel construction drilling device comprises a drilling device body, a drill rod and a drill bit, wherein the drill bit is arranged at the end of the drill rod, the drill rod is arranged at the power end of the drilling device body, the drilling device body is used to drive the drill rod to rotate to perform drilling operations, an installation cavity is provided in the drill rod, a cutting opening connected to the installation cavity is provided on the inner side of the drill rod, a cutting device and a driving device are provided in the drill rod, the driving device is used to drive the cutting device to move along the installation cavity and move out of the cutting opening to abut against a sample, and the cutting device is used to cut the sample when the drill rod rotates.

[0007] Optionally, the cutting device includes a mounting block arranged in the mounting cavity and crushing teeth arranged on the mounting block, the crushing teeth are arranged in multiple layers, the multiple layers of crushing teeth are staggered, and adjacent crushing teeth are seamlessly arranged vertically, and the crushing teeth are fixedly arranged on the mounting block.

[0008] Optionally, the driving device includes an electric push rod and a connecting block arranged in the installation cavity, and there are multiple connecting blocks. The multiple connecting blocks are hingedly connected head to tail, the connecting block located at the head end is fixedly set on the output shaft of the electric push rod, and the connecting block located at the end is hinged to the back of the installation block, and the hinge axis of the connecting block is perpendicular to the axial direction of the drill pipe. The installation cavity is opened vertically, and the cutting opening is opened horizontally. A connecting channel is opened between the installation cavity and the cutting opening, and the connecting channel is opened obliquely. The initial position of the installation block is located in the cutting opening, and the electric push rod pushes the connecting block to drive the installation block to slide out of the cutting opening and abut against the sample.

[0009] Optionally, the drilling device also includes a cooling pipe, which is located between adjacent connecting blocks and between the mounting block and the connecting block, the connecting block and the mounting block are both hollow, a water collecting ring is provided on the outer side of the upper part of the drill rod, the water collecting ring is hollow and has cooling water inside, the cooling pipe is moved out of the drill rod and connected to the water collecting ring, the mounting block is provided with a cooling hole on the surface facing the crushing teeth, and the cooling hole faces the cutting section of the sample.

[0010] Optionally, a water passage is provided on the bottom surface of the mounting block. The water passage is provided horizontally and passes through the mounting block. The water passage is used for cooling water to carry broken objects and dust away from the cutting location.

[0011] Optionally, the cutting device also includes a first sawtooth segment arranged on the mounting block, two first sawtooth segments are provided and are respectively arranged on the top wall and the bottom wall of the mounting block, the crushing teeth are located between the two first sawtooth segments, and when the crushing teeth abut against the sample, the crushing teeth and the sample are in a separated state, and when the drill rod cuts the sample, the first sawtooth segment cuts the sample and makes the crushing teeth abut against the sample, and then the crushing teeth crush the sample between the two cutting seams.

[0012] Optionally, two cutting devices are provided and are symmetrically arranged along the axial direction of the drill rod. The drilling device also includes a lifting piece and a cutting piece, which are symmetrically arranged along the axial direction of the drill rod and are located on the center line of the two cutting devices. The cutting piece is used to cut the middle part of the sample crushing groove and form an annular groove on the center line of the sample crushing groove. The lifting piece is used to act on the upper and lower inner walls of the sample crushing groove to drive the upper and lower side walls of the sample crushing groove to have a separation tendency, so that the sample is broken along the annular groove.

[0013] Optionally, the cutting member includes a second sawtooth segment disposed in the drill rod, and the second sawtooth segment is moved out of the drill rod to abut against the bottom wall of the sample crushing groove.

[0014] Optionally, the lifting member includes a lifting block and abutment blocks slidably arranged on both sides of the lifting block, the lifting block is hollow, and the lifting member also includes a water bag arranged in the lifting block, the water bag is connected with a water collecting ring, a high-pressure pump is arranged in the water collecting ring, the high-pressure pump is used to compress cooling water into the water bag, and drive the abutment blocks on both sides to slide out of the lifting block to break the sample at the lifting end, and the lifting member also includes a ball arranged on the abutment surface of the abutment block, and the ball is rollingly arranged on the abutment block.

[0015] In a second aspect, the present application provides a tunnel construction drilling method, which adopts the following technical solution: Optionally, a tunnel construction drilling method, using a tunnel construction drilling device, further comprises: S1: The drilling device body drives the drill rod and the drill bit to drill a hole at the sampling location. When the drill bit reaches the designed depth, the drill bit continues to move downward to make the sample length exceed the designed length; S2: The drilling device body continues to drive the drill rod to rotate. At this time, the electric push rod pushes the connecting block to slide, and the connecting block pushes all the connecting blocks and the mounting block to move out from the inner wall of the drill rod and abut against the cutting position of the sample; S3: The mounting block drives the first sawtooth segment to contact the sample first, and the first sawtooth segment cuts the sample and penetrates into the sample. When the crushing teeth contact the sample, the crushing teeth crush and cut the sample; the cooling water in the water collecting ring enters the cooling pipe, and is injected into the mounting block along the cooling pipe, and is ejected from the mounting block to act on the crushing part of the sample to cool the crushing teeth and the first sawtooth segment; the cooling water carries the crushed objects and dust out of the water passage; S4: When the sample passes through the first sawtooth section and the crushing teeth to form a deeper crushing groove at the sample cutting position, the second sawtooth section acts on the bottom wall of the crushing groove to form an annular groove on the sample; at the same time, the lifting block is sent into the sample crushing groove, and then cooling water is injected into the water bag through a high-pressure pump. The water bag expands along the opening direction of the lifting block and drives the abutment block to move toward both sides, so that the abutment block abuts against the upper and lower side walls of the sample crushing groove, and continuously applies a lifting force to the sample crushing groove, thereby accelerating the fracture of the sample crushing groove and accelerating the sample sampling efficiency.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. When drilling and sampling, first install the drilling device body at the sampling location, then the power end of the drilling device body drives the drill rod to rotate, and the rotation of the drill rod drives the drill bit to rotate. While the drill bit rotates, it goes deep into the sampling location and wraps the sample in the drill rod. When the feed depth of the drill bit exceeds the designed depth, and the cutting port goes deeper into the underground location than the designed length of the sample, the driving device drives the cutting device to move out of the cutting port, the cutting device abuts against the side wall of the sample, and the drill rod drives the cutting device to move in a circular direction to cut the sample. At the same time, the driving device drives the cutting device to apply extrusion force to the sample to separate the sample. In the above process, the integrity of the sample is ensured, so as to reflect the geological characteristics of the sampling location; 2. The cutting device is located inside the drill rod, and the cutting device moves horizontally to cut the sample, which improves the cutting efficiency of the sample compared to the oblique cutting of the sample; and the forming surface of the sample after cutting is flat, which is convenient for the transportation and inspection of the sample, and there is no need to cut the sample a second time, thereby reducing the possibility of damage to the sample during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a tunnel construction drilling device according to an embodiment of the present application; Figure 2 is a cross-sectional view of a drill rod in a tunnel construction drilling device according to an embodiment of the present application; Figure 3 It is a schematic diagram of the structure of a driving device in a tunnel construction drilling device according to an embodiment of the present application; Figure 4 yes Figure 2 A magnified schematic diagram of part A; Figure 5 It is a schematic diagram of the structure of a cutting seam in a tunnel construction drilling device according to an embodiment of the present application; Figure 6 It is a transverse cross-sectional view of a drill rod in a tunnel construction drilling device according to an embodiment of the present application; Figure 7 It is a schematic diagram of the structure of a crushing groove and annular groove in a tunnel construction drilling device according to an embodiment of the present application; Figure 8 is a cross-sectional view of a drill rod in a tunnel construction drilling device according to an embodiment of the present application; Fig. 9 It is a cross-sectional view of a jacking member in a tunnel construction drilling device according to an embodiment of the present application; Fig.10 yes Fig. 9 Schematic diagram of the enlarged portion B.

[0018] Description of reference numerals: 1. drill rod; 2. drill bit; 3. mounting cavity; 4. cutting opening; 5. Cutting device; 51. Mounting block; 52. Crushing teeth; 53. First sawtooth segment; 6. Driving device; 61. Electric push rod; 62. Connecting block; 7. Connecting channel; 8. Crushing groove; 9. Cooling pipe; 10. Water collecting ring; 11. Cooling hole; 12. Cutting seam; 13. Lifting member; 131. Lifting block; 132. Abutment block; 133. Water bag; 14. cutting member; 141. second sawtooth segment; 15. Annular groove; 16. Test specimen. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1 -Attached Fig.10 This application is described in further detail.

[0020] The present application embodiment discloses a tunnel construction drilling device. Figure 1 and Figure 2 The tunnel construction drilling device includes a drilling device body, a drill rod 1 and a drill bit 2. The drill bit 2 is arranged at the end of the drill rod 1, and the drill rod 1 is arranged at the power end of the drilling device body. The drilling device body is used to drive the drill rod 1 to rotate to perform drilling operations. An installation cavity 3 is opened in the drill rod 1, and a cutting opening 4 connected to the installation cavity 3 is opened on the inner side of the drill rod 1. A cutting device 5 and a driving device 6 are arranged in the drill rod 1. The driving device 6 is used to drive the cutting device 5 to move along the installation cavity 3 and move out of the cutting opening 4 to abut against the sample 16. The cutting device 5 is used to cut the sample 16 when the drill rod 1 rotates.

[0021] When drilling and sampling, first install the drilling device body at the sampling location, then the power end of the drilling device body drives the drill rod 1 to rotate, and the rotation of the drill rod 1 drives the drill bit 2 to rotate. While rotating, the drill bit 2 penetrates into the sampling location and wraps the sample 16 in the drill rod 1. When the feed depth of the drill bit 2 exceeds the designed depth and the cutting opening 4 penetrates deeper into the underground position than the designed length of the sample 16, the driving device 6 drives the cutting device 5 to move out of the cutting opening 4, and the cutting device 5 abuts against the side wall of the sample 16. The drill rod 1 drives the cutting device 5 to move in a circular direction to cut the sample 16. At the same time, the driving device 6 drives the cutting device 5 to apply an extrusion force to the sample 16 to separate the sample 16. In the above process, the integrity of the sample 16 is ensured so as to reflect the geological characteristics of the sampling location.

[0022] Reference Figure 2 , Figure 3 and Figure 4In the embodiment of the present application, the cutting device 5 includes a mounting block 51 arranged in the mounting cavity 3 and a crushing tooth 52 arranged on the mounting block 51. The driving device 6 is used to drive the mounting block 51 to drive the crushing tooth 52 to move out of the cutting port 4 to crush and cut the sample 16. The crushing teeth 52 are arranged in multiple layers, and the multiple layers of crushing teeth 52 are staggered. Adjacent crushing teeth 52 are seamlessly arranged vertically, and the crushing teeth 52 are fixedly arranged on the mounting block 51. When cutting the sample 16, the driving device 6 drives the mounting block 51 to drive the crushing teeth 52 to move out of the cutting port 4 and abut against the sample 16. When the drill rod 1 rotates, it drives the crushing teeth 52 to make a circumferential movement to cut the sample 16, thereby separating the sample 16 from the geological layer. The operation is simple and convenient.

[0023] Reference Figure 2 and Figure 3 In the embodiment of the present application, the driving device 6 includes an electric push rod 61 and a connecting block 62 arranged in the installation cavity 3. The output shaft of the electric push rod 61 is parallel to the axial direction of the drill rod 1 and faces the drill bit 2. A plurality of connecting blocks 62 are provided. The plurality of connecting blocks 62 are hingedly connected head to tail. The connecting block 62 at the head end is fixedly arranged on the output shaft of the electric push rod 61. The connecting block 62 at the end is hingedly connected to the back of the installation block 51. The hinge axis of the connecting block 62 is perpendicular to the axial direction of the drill rod 1. The installation cavity 3 is vertically opened, and the cutting The cutting opening 4 is opened horizontally, and a connecting channel 7 is opened between the installation cavity 3 and the cutting opening 4. The connecting channel 7 is opened obliquely. The initial position of the installation block 51 is located in the cutting opening 4. The electric push rod 61 pushes the connecting block 62 to drive the installation block 51 to slide out of the cutting opening 4 and abut against the sample 16. The electric push rod 61 is started, and the electric push rod 61 drives the connecting block 62 to move. The connecting block 62 moves along the installation cavity 3 and pushes the installation block 51 to drive the crushing teeth 52 to move out of the cutting opening 4. The crushing teeth 52 crush and cut the sample 16. The crushing teeth 52 open a crushing groove 8 of the thickness of the installation block 51 on the sample 16. The installation block 51 is clamped in the crushing groove 8, and the connecting block 62 on the other side is clamped in the cutting opening 4, and the position of the installation block 51 is limited, so that the installation block 51 rotates with the drill rod 1, thereby cutting and crushing the sample 16.

[0024] Under the action of the connecting channel 7, the movement of the connecting block 62 is guided, so that the connecting block 62 can push the installation block 51 to move; further, the side walls of the installation cavity 3 are 1-2mm away from the connecting block 62, so that the connecting block 62 can move in the installation cavity 3 while the installation cavity 3 limits the position of the connecting block 62.

[0025] Reference Figure 1 , Figure 2 and Figure 3In order to facilitate cooling of the crushing teeth 52 and improve the crushing efficiency of the sample 16, in the embodiment of the present application, the drilling device also includes a cooling pipe 9, and a plurality of cooling pipes 9 are provided and are spirally shaped. The cooling pipe 9 is located between adjacent connecting blocks 62 and between the mounting block 51 and the connecting block 62. The connecting block 62 and the mounting block 51 are both hollow. A water collecting ring 10 is provided on the outer side of the upper part of the drill rod 1. The water collecting ring 10 is hollow and has cooling water inside. The cooling pipe 9 is moved out of the drill rod 1 and communicated with the water collecting ring 10. The mounting block 51 is provided with a cooling hole 11 on the surface facing the crushing teeth 52, and the cooling hole 11 faces the cutting section of the sample 16; When the sample 16 is broken and cut off, the cooling water in the water collecting ring 10 enters the connecting block 62 and the mounting block 51 through the cooling pipe 9. The cooling water entering the mounting block 51 cools the breaking teeth 52, thereby ensuring that the breaking teeth 52 maintain the required strength, and facilitating the cutting of the sample 16. At the same time, the cooling water is ejected from the cooling hole 11, and the ejected cooling water directly acts on the breaking teeth 52 to cool the breaking teeth 52, thereby improving the cooling effect on the breaking teeth 52. At the same time, the cooling water flushes the breaking surface, thereby removing the fine dust on the breaking surface, thereby increasing the friction between the breaking teeth 52 and the breaking surface, thereby improving the breaking effect.

[0026] In order to facilitate the removal of the broken objects and reduce the impact of the broken objects on the feeding of the mounting block 51, a water passage is provided on the bottom surface of the mounting block 51. The water passage is provided horizontally and runs through the mounting block 51. The water passage is used for cooling water to carry the broken objects and dust away from the cutting position. After the cooling water is mixed with the broken objects, the cooling water carries the broken objects and flows out along the water passage, thereby facilitating the feeding of the crushing teeth 52.

[0027] Reference Figure 4 and Figure 5In order to improve the crushing and cutting efficiency of the sample 16, the cutting device 5 further includes a first sawtooth segment 53 fixedly arranged on the mounting block 51. Two first sawtooth segments 53 are provided and are respectively arranged on the top wall and the bottom wall of the mounting block 51. The crushing teeth 52 are located between the two first sawtooth segments 53. When the crushing teeth 52 abut against the sample 16, the crushing teeth 52 and the sample 16 are in a separated state. When the drill rod 1 cuts the sample 16, the first sawtooth segment 53 cuts the sample 16 and the crushing teeth 52 abut against the sample 16. Then, the crushing teeth 52 crush the sample 16 between the two cutting seams 12. When the mounting block 51 drives the crushing teeth 52 to move out, the first sawtooth section 53 first contacts the sample 16, and two cutting seams 12 are formed on the sample 16. Subsequently, after the crushing teeth 52 contact the sample 16, the crushing teeth 52 crush the sample 16 between the two cutting seams 12. Because the cutting seams 12 provide space for the sample 16 to deform due to crushing, it is convenient for the sample 16 to be crushed and fractured. At the same time, under the action of the cutting seams 12, the cut portion to be crushed is separated from the geological layer, so that the sample 16 between the two cutting seams 12 is independent, which is convenient for the crushing operation of the crushing teeth 52.

[0028] Reference Figure 6 and Figure 7 In order to further improve the cutting efficiency of the sample 16, two cutting devices 5 are provided and are symmetrically arranged along the axial direction of the drill rod 1. The drilling device also includes a lifting member 13 and a cutting member 14. The lifting member 13 and the cutting member 14 are symmetrically arranged along the axial direction of the drill rod 1 and are located on the center line of the two cutting devices 5. The cutting member 14 is used to cut the middle part of the crushing groove 8 of the sample 16, and form an annular groove 15 on the center line of the crushing groove 8 of the sample 16. The lifting member 13 is used to act on the upper and lower inner walls of the crushing groove 8 of the sample 16, and drive the upper and lower side walls of the crushing groove 8 of the sample 16 to have a separation tendency, so that the sample 16 is broken along the annular groove 15; after the cutting device 5 forms the crushing groove 8 on the sample 16, the annular groove 15 is formed on the annular side wall of the crushing groove 8 through the cutting member 14, and then the lifting member 13 acts on the upper and lower side walls of the crushing groove 8, and applies an upward lifting force to the sample 16, thereby accelerating the fracture efficiency of the sample 16.

[0029] Reference Figure 7 and Figure 8In the embodiment of the present application, the cutting member 14 includes a second sawtooth segment 141 arranged in the drill rod 1, and the second sawtooth segment 141 is moved out of the drill rod 1 and abuts against the bottom wall of the crushing groove 8 of the sample 16. The second sawtooth segment 141 is connected to the second sawtooth segment 141 by an electric push rod 61 and a connecting block 62 that are hinged to each other, and the electric push rod 61, the connecting block 62 and the second sawtooth segment 141 are installed in the drill rod 1 through the installation cavity 3 and the cutting opening 4; after the crushing groove 8 of the sample 16 is formed, the electric push rod 61 drives the connecting block 62 to drive the second sawtooth segment 141 to move out of the drill rod 1 and act on the crushing groove 8, thereby forming an annular groove 15 on the bottom wall of the crushing groove 8 of the sample 16, and the operation is simple and convenient.

[0030] Reference Figure 7 , Fig. 9 and Fig.10 In the embodiment of the present application, the lifting member 13 includes a lifting block 131 and abutment blocks 132 slidably arranged on both sides of the lifting block 131. Further, the lifting block 131 is connected to the lifting block 131 by means of an electric push rod 61 and a connecting block 62 that are hinged to each other, and the electric push rod 61, the connecting block 62 and the lifting block 131 are installed in the drill pipe 1 through the installation cavity 3 and the cutting opening 4. The lifting block 131 is hollow and has openings on both sides. The lifting member 13 also includes a water bag 133 arranged in the lifting block 131. The water bag 133 is connected to the water collecting ring 10, and the water collecting ring 10 is provided with A high-pressure pump is provided, which is used to compress cooling water into the water bag 133, and drive the abutment blocks 132 on both sides to slide out from the lifting block 131, and the lifting end breaks the sample 16; when lifting the crushing tank 8, the electric push rod 61 is started, and the electric push rod 61 drives the connecting block 62 to drive the lifting block 131 into the crushing tank 8, and then the high-pressure pump is started. The high-pressure pump injects cooling water into the water bag 133, the volume of the water bag 133 increases, and the water bag 133 pushes the abutment block 132 to move out of the lifting block 131, and abuts on both sides of the crushing tank 8, thereby applying a lifting force to the sample 16, and the operation is simple and convenient.

[0031] Reference Figure 7 In order to facilitate the abutment block 132 to abut against the crushing groove 8, the drill rod 1 drives the abutment block 132 to rotate circumferentially, and the lifting member 13 also includes a ball disposed on the abutment surface of the abutment block 132, and the ball is rolled on the abutment block 132.

[0032] The implementation principle of a tunnel construction drilling device in the embodiment of the present application is: When drilling and sampling, first install the drilling device body at the sampling location, then the power end of the drilling device body drives the drill rod 1 to rotate, and the rotation of the drill rod 1 drives the drill bit 2 to rotate. The drill bit 2 rotates while penetrating into the sampling location, and the sample 16 is wrapped in the drill rod 1. When the feed depth of the drill bit 2 exceeds the designed depth, and the cutting opening 4 penetrates into the underground position beyond the designed length of the sample 16, the electric push rod 61 drives the connecting block 62 to drive the mounting block 51 to drive the first sawtooth segment 53 and the crushing teeth 52 to move out of the cutting opening 4, and the first sawtooth segment 53 forms a cutting seam 12 on the sample 16, and subsequently, under the action of the crushing teeth 52, a crushing groove 8 is formed on the sample 16; When the crushing groove 8 has a certain depth, the electric push rod 61 drives the connecting block 62 to drive the second sawtooth segment 141 to form an annular groove 15 in the middle of the crushing groove 8, and the electric push rod 61 drives the lifting block 131 to enter the crushing groove 8, and then the high-pressure pump is started. The high-pressure pump injects cooling water into the water bag 133, the volume of the water bag 133 increases, and the water bag 133 pushes the abutment block 132 out of the lifting block 131 and abuts on both sides of the crushing groove 8, thereby applying a lifting force to the sample 16, and then the sample 16 is broken from the annular groove 15, thereby improving the sampling efficiency of the sample 16. At the same time, in the above process, the integrity of the sample 16 is ensured, so as to reflect the geological characteristics of the sampling location.

[0033] The embodiment of the present application discloses a tunnel construction drilling method, using a tunnel construction drilling device, and further comprising: S1: The drilling device body drives the drill rod 1 and the drill bit 2 to drill a hole at the sampling location. When the drill bit 2 reaches the designed depth, the drill bit 2 continues to move downward so that the length of the sample 16 exceeds the designed length; S2: The drilling device body continues to drive the drill rod 1 to rotate. At this time, the electric push rod 61 pushes the connecting block 62 to slide, and the connecting block 62 pushes all the connecting blocks 62 and the mounting block 51 to move out from the inner wall of the drill rod 1 and abut against the cutting position of the sample 16; S3: The mounting block 51 drives the first sawtooth segment 53 to first contact the sample 16, and the first sawtooth segment 53 cuts the sample 16 and penetrates into the sample 16. When the crushing teeth 52 contact the sample 16, the crushing teeth 52 crush and cut the sample 16; the cooling water in the water collecting ring 10 enters the cooling pipe 9, and is injected into the mounting block 51 along the cooling pipe 9, and is ejected from the mounting block 51 to act on the crushing part of the sample 16 to cool the crushing teeth 52 and the first sawtooth segment 53; the cooling water carries the crushed objects and dust out of the water passage; S4: After the sample 16 passes through the first sawtooth segment 53 and the crushing teeth 52 to form a deeper crushing groove 8 at the cutting position of the sample 16, the second sawtooth segment 141 acts on the bottom wall of the crushing groove 8 to form an annular groove 15 in the sample 16; at the same time, the lifting block 131 is sent into the crushing groove 8 of the sample 16, and then the cooling water is injected into the water bag 133 through the high-pressure pump. The water bag 133 expands along the opening direction of the lifting block 131 and drives the abutment block 132 to move toward both sides, so that the abutment block 132 abuts against the upper and lower side walls of the crushing groove 8 of the sample 16, and continuously applies a lifting force to the crushing groove 8 of the sample 16, thereby accelerating the fracture of the crushing groove 8 of the sample 16, thereby accelerating the sampling efficiency of the sample 16.

[0034] 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 tunnel construction drilling device, characterized in that: The invention comprises a drilling device body, a drill rod (1) and a drill bit (2), wherein the drill bit (2) is arranged at the end of the drill rod (1), the drill rod (1) is arranged at the power end of the drilling device body, the drilling device body is used to drive the drill rod (1) to rotate to perform drilling operations, an installation cavity (3) is provided in the drill rod (1), a cutting opening (4) connected to the installation cavity (3) is provided on the inner side of the drill rod (1), a cutting device (5) and a driving device (6) are arranged in the drill rod (1), the driving device (6) is used to drive the cutting device (5) to move along the installation cavity (3) and move out of the cutting opening (4) to abut against a sample (16), and the cutting device (5) is used to cut the sample (16) when the drill rod (1) rotates.

2. A tunnel construction drilling device according to claim 1, characterized in that: The cutting device (5) comprises a mounting block (51) arranged in the mounting cavity (3) and crushing teeth (52) arranged on the mounting block (51); the crushing teeth (52) are arranged in multiple layers, the multiple layers of crushing teeth (52) are arranged in a staggered manner, and adjacent crushing teeth (52) are arranged seamlessly in the vertical direction; and the crushing teeth (52) are fixedly arranged on the mounting block (51).

3. A tunnel construction drilling device according to claim 2, characterized in that: The driving device (6) comprises an electric push rod (61) and a connecting block (62) arranged in the installation cavity (3). The connecting blocks (62) are provided in plurality. The connecting blocks (62) are hingedly connected head to tail. The connecting block (62) located at the head end is fixedly arranged on the output shaft of the electric push rod (61), and the connecting block (62) located at the tail end is hingedly connected to the back of the installation block (51). The hinge axis of the connecting block (62) is perpendicular to the axial direction of the drill rod (1). The installation cavity (3) is opened vertically, and the cutting opening (4) is opened horizontally. A connecting channel (7) is opened between the installation cavity (3) and the cutting opening (4), and the connecting channel (7) is opened obliquely. The initial position of the installation block (51) is located in the cutting opening (4). The electric push rod (61) pushes the connecting block (62) to drive the installation block (51) to slide out of the cutting opening (4) and abut against the sample (16).

4. A tunnel construction drilling device according to claim 3, characterized in that: The drilling device further comprises a cooling pipe (9), wherein the cooling pipe (9) is located between adjacent connecting blocks (62) and between the mounting block (51) and the connecting block (62); the connecting block (62) and the mounting block (51) are both hollow; a water collecting ring (10) is arranged on the outer side of the upper part of the drill rod (1); the water collecting ring (10) is hollow and has cooling water arranged inside; the cooling pipe (9) is moved out of the drill rod (1) and is connected to the water collecting ring (10); a cooling hole (11) is opened on the surface of the mounting block (51) facing the crushing teeth (52); the cooling hole (11) faces the cutting section of the sample (16).

5. A tunnel construction drilling device according to claim 4, characterized in that: The bottom surface of the mounting block (51) is provided with a water passage, the water passage is horizontally provided and runs through the mounting block (51), and the water passage is used for cooling water to carry broken objects and dust out of the cutting position.

6. A tunnel construction drilling device according to claim 4, characterized in that: The cutting device (5) further comprises a first sawtooth segment (53) arranged on the mounting block (51); two first sawtooth segments (53) are provided and are respectively arranged on the top wall and the bottom wall of the mounting block (51); the crushing tooth (52) is located between the two first sawtooth segments (53); when the crushing tooth (52) abuts against the sample (16), the crushing tooth (52) and the sample (16) are in a separated state; when the drill rod (1) cuts the sample (16), the first sawtooth segment (53) cuts the sample (16) so that the crushing tooth (52) abuts against the sample (16), and then the crushing tooth (52) crushes the sample (16) between the two cutting seams (12).

7. A tunnel construction drilling device according to claim 6, characterized in that: Two cutting devices (5) are provided and are symmetrically arranged along the axis direction of the drill rod (1). The drilling device also includes a lifting member (13) and a cutting member (14). The lifting member (13) and the cutting member (14) are symmetrically arranged along the axis direction of the drill rod (1) and are located on the center line of the two cutting devices (5). The cutting member (14) is used to cut the middle part of the crushing groove (8) of the sample (16), and an annular groove (15) is formed on the center line of the crushing groove (8) of the sample (16). The lifting member (13) is used to act on the upper and lower inner walls of the crushing groove (8) of the sample (16), thereby driving the upper and lower side walls of the crushing groove (8) of the sample (16) to have a tendency to separate, thereby causing the sample (16) to break along the annular groove (15).

8. A tunnel construction drilling device according to claim 7, characterized in that: The cutting element (14) comprises a second sawtooth segment (141) arranged in the drill rod (1), and the second sawtooth segment (141) moves out of the drill rod (1) and abuts against the bottom wall of the crushing groove (8) of the sample (16).

9. A tunnel construction drilling device according to claim 7, characterized in that: The lifting member (13) comprises a lifting block (131) and abutment blocks (132) slidably arranged on both sides of the lifting block (131); the lifting block (131) is hollow; the lifting member (13) further comprises a water bag (133) arranged in the lifting block (131); the water bag (133) is connected to a water collecting ring (10); a high-pressure pump is arranged in the water collecting ring (10); the high-pressure pump is used to compress cooling water into the water bag (133), thereby driving the abutment blocks (132) on both sides to slide out of the lifting block (131) and thereby breaking the lifting end specimen (16); the lifting member (13) further comprises a ball bearing arranged on the abutment surface of the abutment block (132); the ball bearing is rollingly arranged on the abutment block (132).

10. A tunnel construction drilling method, using the tunnel construction drilling device according to any one of claims 1 to 9, characterized in that: Also includes; S1: The drilling device body drives the drill rod (1) and the drill bit (2) to drill a hole at the sampling location. When the drill bit (2) reaches the designed depth, the drill bit (2) continues to move downward so that the length of the sample (16) exceeds the designed length. S2: The drilling device body continues to drive the drill rod (1) to rotate. At this time, the electric push rod (61) pushes the connecting block (62) to slide, and the connecting block (62) pushes all the connecting blocks (62) and the mounting block (51) to move out from the inner wall of the drill rod (1) and abut against the cut portion of the sample (16); S3: The mounting block (51) drives the first sawtooth segment (53) to first contact the sample (16), and the first sawtooth segment (53) cuts the sample (16) and penetrates into the sample (16). When the crushing teeth (52) contact the sample (16), the crushing teeth (52) crush and cut the sample (16); the cooling water in the water collecting ring (10) enters the cooling pipe (9), and is injected into the mounting block (51) along the cooling pipe (9), and is ejected from the mounting block (51) to act on the crushed part of the sample (16), so as to cool the crushing teeth (52) and the first sawtooth segment (53); the cooling water carries the crushed objects and dust out from the water passage; S4: After the sample (16) passes through the first sawtooth section (53) and the crushing teeth (52) to form a deeper crushing groove (8) at the cutting position of the sample (16), the second sawtooth section (141) acts on the bottom wall of the crushing groove (8) to form an annular groove (15) on the sample (16); at the same time, the lifting block (131) is sent into the crushing groove (8) of the sample (16), and then cooling water is injected into the water bag (133) through a high-pressure pump. The water bag (133) expands along the opening direction of the lifting block (131) and drives the abutment block (132) to move toward both sides, so that the abutment block (132) abuts against the upper and lower side walls of the crushing groove (8) of the sample (16), and continuously applies a lifting force to the crushing groove (8) of the sample (16), thereby accelerating the fracture of the crushing groove (8) of the sample (16), thereby accelerating the sampling efficiency of the sample (16).

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