A detection system for drilling and blasting construction of geotechnical tunnels

Abstract

The invention discloses a detection system for drilling and blasting construction of a geotechnical engineering tunnel, comprising a trolley seat, a guide rod fixedly mounted on the trolley seat, a mounting sleeve slidably mounted on the guide rod, a lifting seat fixedly connected to the mounting sleeve, a working platform fixedly connected to the lifting seat, an axle seat fixedly mounted on the working platform, a sampling drill bit rotatably mounted on the axle seat, a material receiving trough fixedly mounted on the working platform, a screening disc fixedly mounted on the working platform, a driving shaft structure with a linkage function mounted on the screening disc, and a pushing and separating structure with a separating and combining function mounted on the screening disc; the invention installs the detection system structure through the trolley seat, and can perform traveling detection along the tunnel, and utilizes the driving shaft structure to synchronously drive the pushing and separating structure and the sampling drill bit, completes sampling and geotechnical screening work, and enables soil and rock to enter the detection structure accordingly.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering, and in particular to a detection system for geotechnical engineering tunnel drilling and blasting construction. Background Art

[0002] Tunnels are an important part of highways and one of the ways people use underground space. Through the construction of tunnels, a section of road that was originally difficult to build can be opened up, allowing the highway to continue, opening up mountainous areas with complex terrain, or making full use of urban space to create a smooth underground traffic network and relieve traffic pressure.

[0003] At present, a combination of methods is often used in the process of tunnel construction. Among them, the drilling and blasting method is a basic construction method, that is, using drilling rigs and blasting to complete the excavation of the tunnel. The drilling and blasting method has certain advantages in short-distance excavation, large-section tunnels and caverns, connecting passages, shafts and other working conditions. Different from the usual circular section of TBM, the construction section of the drilling and blasting method is more free, and less space is wasted in the construction tunnel.

[0004] However, the drilling and blasting method also has certain disadvantages. It produces a lot of noise and has a great impact on the tunnel rock and soil. Therefore, multiple tests must be carried out during the construction process to ensure that the tunnel rock and soil meet the construction requirements and prevent safety problems. However, current drilling and blasting construction detection mostly relies on on-site sampling and laboratory testing. There are differences between the laboratory environment and the on-site environment, which can easily cause errors in the test results. Some common on-site detection equipment is easily restricted by the tunnel environment and damaged by being hit by the rock and soil. Summary of the invention

[0005] The purpose of the present invention is to provide a detection system for geotechnical engineering tunnel drilling and blasting construction, so as to achieve the purpose of real-time on-site detection and avoid rockfall damage, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a detection system for drilling and blasting construction of a geotechnical engineering tunnel, comprising a trolley seat, a guide rod is fixedly mounted on the trolley seat, and a mounting sleeve is slidably mounted on the guide rod, a lifting seat is fixedly connected to the mounting sleeve, and a cylinder is fixedly connected to the lifting seat, a working platform is fixedly connected to the lifting seat, and a reinforcing rod is fixedly connected to the working platform, an axle seat is fixedly mounted on the working platform, and a sampling drill bit is rotatably mounted on the axle seat, a material receiving trough is fixedly mounted on the working platform, and the material receiving trough is sleeved on the sampling drill bit through a through hole, a speed reduction belt is arranged on the material receiving trough, a screening disc is fixedly mounted on the working platform, and a driving shaft structure with a linkage function is mounted on the screening disc, a pushing and separating structure with a separating and combining function is mounted on the screening disc, and the pushing and separating structure is connected to the driving shaft structure, a protective cover structure with a split rotation function is mounted on the working platform, and a strength detection box and a humidity detection box are fixedly mounted on the working platform, both of which are connected to the screening disc.

[0007] Preferably, the drive shaft structure includes a drive shaft rotatably mounted on the screening disc, and the drive shaft is driven by a drive seat, a motor is fixedly mounted in the drive seat, and a pulley pair is fixedly connected to the drive shaft, and the pulley pair is connected to the mounting shaft of the sampling drill bit.

[0008] Preferably, the pushing and separating structure includes a mesh slot and a full-through slot arranged on the screening disk, and the pushing and separating structure also includes a first mesh plate fixedly mounted on the driving shaft, and a hanging ring sleeved on the driving shaft, a second mesh plate fixedly connected to the hanging ring, and a magnetic block fixedly mounted on the second mesh plate, and an electromagnet fixedly mounted on the first mesh plate.

[0009] Preferably, the leakage groove and the full-through groove are symmetrically arranged on the screening plate, and the leakage groove is a groove body with a filter, and the full-through groove is a straight-through groove, the strength detection box and the humidity detection box are respectively connected to the full-through groove and the leakage groove, the first mesh plate and the second mesh plate are both flat plate structures with leakage holes, and the leakage holes of the two are staggered, and the magnetic block and the electromagnet are respectively installed on the top of the second mesh plate and the first mesh plate.

[0010] Preferably, the protective cover structure includes a mounting base fixedly mounted on the working platform, and a flip rod is rotatably mounted on the mounting base, the flip rod is driven by a second motor, and a protective cover is fixedly connected to the flip rod, a hanger is fixedly mounted on the protective cover, and a guide ring is rotatably mounted in the hanger, the guide ring is fixedly connected to the rotating top, and the protective cover structure also includes a receiving base fixedly mounted on the working platform.

[0011] Preferably, the protective cover and the rotating top form a hemispherical structure, and the rotating top is installed on the through groove in the center of the protective cover, the pendant is installed in a ring shape on the inner wall of the protective cover, and a rotating groove is provided in the pendant, and the guide ring is limitedly connected in the rotating groove.

[0012] Preferably, a linkage rod is fixedly mounted on the driving shaft, and a limiting block is fixedly mounted on the linkage rod, a driven rod is fixedly mounted on the rotating top, and a slot is provided on the driven rod, and the slot is connected to the limiting slot, the driven rod is fixedly connected to the center position of the inner wall of the rotating top, and the linkage rod is fixedly mounted on the top of the driving shaft.

[0013] Preferably, the trolley seat is installed on the top of the tunnel trolley, and four guide rods are balancedly installed on the top of the trolley seat. A slide groove is provided in the mounting sleeve, which is sleeved on the guide rod. The lifting seat is balancedly installed on the top of the mounting sleeve. The base of the cylinder is fixedly installed on the trolley seat, and the telescopic end of the cylinder is connected to the lifting seat.

[0014] Preferably, the reinforcing rod is fixedly mounted at the front end of the working platform, and the shaft seat is located at the front end of the working platform, the sampling drill bit is vertically mounted on the top of the shaft seat, and the material receiving trough is inclined, and the sampling drill bit is arranged through the through hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention installs the detection system structure through the trolley seat, and can perform traveling detection along the tunnel, which is very flexible. The driving shaft structure is used to synchronously drive the push separation structure and the sampling drill bit. The sampling drill bit quickly rotates into the rock wall to complete the sampling work, and the push separation structure connected to the driving shaft can complete the screening of the sampled rock and soil, so that the soil and rock enter the detection structure accordingly, completing rapid on-site real-time detection;

[0017] 2. In the push separation structure of the present invention, the screening plate is used as the main body, and when the rock and soil fall into the screening plate, the rock and soil can be efficiently separated, and they can be sent to the corresponding detection structure respectively. First, the first mesh plate is fixedly connected to the driving shaft. When the driving shaft rotates, the first mesh plate can rotate with it, and the second mesh plate is pushed by the first mesh plate. First, the two overlap together. Since the leakage holes of the two are staggered, there is no gap after overlapping, which is similar to a flat plate structure. It can push the rock and soil together and quickly transfer them away from the falling place, and then pass By energizing the electromagnet, a magnetic repulsion force is generated on the magnetic block, so that the second mesh plate is separated from the first mesh plate, and the leakage holes of both are exposed, so that the soil can be retained and fall from the mesh slot, while the remaining rock is pushed by the two mesh plates until it enters the full-through slot, completing the efficient screening work. Finally, the soil enters the humidity detection box from the mesh slot, and the rock enters the strength detection box from the full-through slot, respectively completing the moisture content and strength tests of the samples taken, completing the detection of the geotechnical environment of the tunnel construction, and effectively avoiding safety problems during drilling and blasting construction;

[0018] 3. The present invention takes into account the complex environment in the tunnel. In order to prevent the detection structure from being damaged by falling rocks, a protective cover structure is also provided. When a small-scale rock and soil collapse is detected during the sampling process, the protective cover structure can be activated to effectively protect the device. A high-strength rotating top is provided as the main anti-collision part. The rotating top is also rotatably installed using a guide ring and can be rotated to further achieve the effect of buffering and unloading force. The driven rod on the rotating top can be connected to the linkage rod through a slot with a limiting groove, and the rotating top is driven to rotate synchronously through the linkage rod, and automatically rotates for protection when the protective cover is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the protection state of the present invention;

[0020] Figure 2 It is a schematic diagram of the use state of the present invention;

[0021] Figure 3 is a schematic diagram of the bottom structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the lifting seat structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the working platform of the present invention;

[0024] Figure 6 It is a bottom schematic diagram of the working platform of the present invention;

[0025] Figure 7 It is a schematic diagram of the screening structure of the present invention;

[0026] Figure 8 is a schematic diagram of the protective cover structure of the present invention;

[0027] Fig. 9 for Figure 7 A magnified schematic diagram of the middle A area;

[0028] Fig.10 for Figure 8 Enlarged schematic diagram of area B in the middle.

[0029] In the figure: trolley seat 1, guide rod 2, mounting sleeve 3, lifting seat 4, cylinder 5, working platform 6, reinforcing rod 7, shaft seat 8, sampling drill bit 9, material receiving trough 10, through hole 11, speed reduction belt 12, screening disc 13, driving shaft 14, driving seat 15, pulley pair 16, leakage mesh slot 17, full through slot 18, first mesh plate 19, hanging ring 20, second mesh plate 21, magnetic block 22, electromagnet 23, linkage rod 24, limit block 25, mounting seat 26, flip rod 27, protective cover 28, pendant 29, guide ring 30, rotating top 31, driven rod 32, slot 33, limit slot 34, receiving seat 35, strength detection box 36, humidity detection box 37. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 10The present invention provides a technical solution: a detection system for drilling and blasting construction of a geotechnical engineering tunnel, comprising a trolley seat 1, a guide rod 2 is fixedly installed on the trolley seat 1, and a mounting sleeve 3 is slidably installed on the guide rod 2, a lifting seat 4 is fixedly connected to the mounting sleeve 3, and a cylinder 5 is fixedly connected to the lifting seat 4, a working platform 6 is fixedly connected to the lifting seat 4, and a reinforcing rod 7 is fixedly connected to the working platform 6, an axle seat 8 is fixedly installed on the working platform 6, and a sampling drill bit 9 is rotatably installed on the axle seat 8, a material receiving trough 10 is fixedly installed on the working platform 6, and The material receiving trough 10 is sleeved on the sampling drill bit 9 through the through hole 11, and a speed bump 12 is arranged on the material receiving trough 10. A screening disc 13 is fixedly installed on the working platform 6, and a driving shaft structure with a linkage function is installed on the screening disc 13. A pushing and separating structure with a separation and combination function is installed on the screening disc 13, and the pushing and separating structure is connected to the driving shaft structure. A protective cover structure with a split rotation function is installed on the working platform 6, and a strength detection box 36 and a humidity detection box 37 are fixedly installed on the working platform 6, and both are connected to the screening disc 13.

[0032] The trolley seat 1 is installed on the top of the tunnel trolley, and four guide rods 2 are balanced and installed on the top of the trolley seat 1. The mounting sleeve 3 is provided with a slide groove, which is sleeved on the guide rod 2. The lifting seat 4 is balanced and installed on the top of the mounting sleeve 3. The base of the cylinder 5 is fixedly installed on the trolley seat 1, and the telescopic end of the cylinder 5 is connected to the lifting seat 4.

[0033] The main mobile structure of the present invention is a tunnel trolley (not shown in the figure), on which the detection system structure is installed through the trolley seat 1, so that the moving detection can be carried out along the tunnel, which is very flexible. On the trolley seat 1 of the present invention, the lifting seat 4 is firstly installed by the guide rod 2, and the external force is provided by the cylinder 5, so that the lifting seat 4 can be raised or lowered, and its rise can provide drilling force for the sampling drill 9;

[0034] The reinforcing rod 7 is fixedly mounted on the front end of the working platform 6, and the shaft seat 8 is located at the front end of the working platform. The sampling drill bit 9 is vertically mounted on the top of the shaft seat 8, and the receiving trough 10 is tilted, and the sampling drill bit 9 is set through the through hole 11;

[0035] A working platform 6 is further installed on the lifting seat 4. On the working platform 6, a sampling drill bit 9 is rotatably installed through a shaft seat 8. When the sampling drill bit 9 rotates, the lifting seat 4 moves upward to drive it to drill into the rock wall, thereby completing the drilling sampling work. The fallen rock and soil samples fall into the receiving trough 10 and enter the screening plate 13 after being decelerated by the speed reduction belt 12.

[0036] The driving shaft structure includes a driving shaft 14 rotatably mounted on the screening disc 13, and the driving shaft 14 is driven by a driving seat 15, a motor is fixedly mounted in the driving seat 15, and a pulley pair 16 is fixedly connected to the driving shaft 14, and the pulley pair 16 is connected to the mounting shaft of the sampling drill bit 9;

[0037] The driving shaft structure is used to synchronously drive the push separation structure and the sampling drill bit 9. When the driving seat 15 drives the driving shaft 14 to rotate by the motor, the sampling drill bit 9 is driven by the pulley pair 16, so that it can quickly rotate into the rock wall to complete the sampling work, and the push separation structure connected to the driving shaft 14 can complete the screening of the sampled rock and soil, so that the soil and rock can enter the detection structure accordingly, and complete the rapid on-site real-time detection;

[0038] The push separation structure includes a mesh slot 17 and a full-through slot 18 arranged on the screening plate 13, and the push separation structure also includes a first mesh plate 19 fixedly mounted on the driving shaft 14, and a hanging ring 20 sleeved on the driving shaft 14, a second mesh plate 21 is fixedly connected to the hanging ring 20, and a magnetic block 22 is fixedly mounted on the second mesh plate 21, and an electromagnet 23 is fixedly mounted on the first mesh plate 19;

[0039] In the push separation structure, the screening plate 13 is used as the main body, and when the rock and soil fall into the screening plate 13, the rock and soil can be efficiently separated and sent to the corresponding detection structure respectively;

[0040] The mesh slot 17 and the full-through slot 18 are symmetrically arranged on the screening plate 13, and the mesh slot 17 is a slot body with a filter screen, and the full-through slot 18 is a straight slot, the strength detection box 36 and the humidity detection box 37 are respectively connected to the full-through slot 18 and the mesh slot 17, the first mesh plate 19 and the second mesh plate 21 are both flat plate structures with leakage holes, and the leakage holes of the two are staggered, and the magnetic block 22 and the electromagnet 23 are respectively installed on the top of the second mesh plate 21 and the first mesh plate 19;

[0041] Specifically, the mesh slot 17 and the full-through slot 18 provided on the screening disc 13 are used for the passage of finer soil and larger rocks, respectively. The driving shaft 14 is installed at the center of the screening disc 13, and the first mesh plate 19 is fixedly connected to the driving shaft 14. When the driving shaft 14 rotates, the first mesh plate 19 can rotate along with it, and the second mesh plate 21 is pushed by the first mesh plate 19. First, the two mesh plates overlap each other. Since the leakage holes of the two mesh plates are staggered, there is no gap after overlapping, which is similar to a flat plate structure, and the rock and soil can be pushed together and quickly transferred away from the falling material. Then, by energizing the electromagnet 23, a magnetic repulsion force is generated on the magnetic block 22, so that the second mesh plate 21 is separated from the first mesh plate 19, and the leakage holes of the two mesh plates are exposed, so that the soil can be left and fall from the mesh slot 17, while the remaining rock is pushed by the two mesh plates until it enters the full-through slot 18, completing the efficient screening work.

[0042] Finally, the soil enters the humidity detection box 37 from the mesh slot 17, and the rock enters the strength detection box 36 from the full-through slot 18, respectively completing the moisture content and strength tests of the samples taken, completing the detection of the geotechnical environment for tunnel construction, and effectively avoiding safety problems during drilling and blasting construction;

[0043] The protective cover structure includes a mounting seat 26 fixedly mounted on the working platform 6, and a flip rod 27 is rotatably mounted on the mounting seat 26, the flip rod 27 is driven by a second motor, and a protective cover 28 is fixedly connected to the flip rod 27, a hanging member 29 is fixedly mounted on the protective cover 28, and a guide ring 30 is rotatably mounted in the hanging member 29, and the guide ring 30 is fixedly connected to the rotating top 31, and the protective cover structure also includes a receiving seat 35 fixedly mounted on the working platform 6;

[0044] At the same time, considering the complex environment in the tunnel, in order to prevent the detection structure of the present invention from being damaged by falling rocks, a protective cover structure is also provided. When a small range of rock and soil collapse is detected during the sampling process, the protective cover structure is activated to effectively protect the device.

[0045] The protective cover 28 and the rotating top 31 form a hemispherical structure, and the rotating top 31 is installed on the through groove in the center of the protective cover 28, the hanging member 29 is installed on the inner wall of the protective cover 28 in an annular shape, and a rotating groove is provided in the hanging member 29, and the guide ring 30 is limitedly connected in the rotating groove;

[0046] When in use, the flip rod 27 on the mounting seat 26 can be rotated to drive the protective cover 28 to rotate and cover the sampling drill bit 9 and the screening plate 13, effectively preventing damage caused by falling rocks. The protective cover 28 is a spherical structure, which can effectively guide the falling rocks to the surroundings to reduce damage, and is provided with a high-strength rotating top 31 as the main anti-collision part. The rotating top 31 is also rotatably installed using a guide ring 30, and can be rotated to further achieve the effect of buffering unloading.

[0047] A linkage rod 24 is fixedly mounted on the driving shaft 14, and a limit block 25 is fixedly mounted on the linkage rod 24. A driven rod 32 is fixedly mounted on the rotating top 31, and a slot 33 is provided on the driven rod 32, and the slot 33 is connected to the limit slot 34. The driven rod 32 is fixedly connected to the center position of the inner wall of the rotating top 31, and the linkage rod 24 is fixedly mounted on the top of the driving shaft 14.

[0048] When the protective cover 28 is used for protection, the driven rod 32 on the rotating top 31 can be connected to the linkage rod 24 through the slot 33 with the limiting slot 34, and the rotating top 31 is driven to rotate synchronously through the linkage rod 24, and automatically rotates for protection when the protective cover 28 is closed;

[0049] When the present invention is in use: first, the main moving structure of the present invention is a tunnel trolley (not shown in the figure), on which the detection system structure is installed through the trolley seat 1, so that the moving detection can be carried out along the tunnel, which is very flexible. On the trolley seat 1 of the present invention, the lifting seat 4 is first installed in a lifting manner using the guide rod 2, and the external force is provided by the cylinder 5, so that the lifting seat 4 can be raised or lowered, and its rise can provide drilling force for the sampling drill bit 9. The working platform 6 is further installed on the lifting seat 4, and the sampling drill bit 9 is rotatably installed on the working platform 6 through the shaft seat 8. When the sampling drill bit 9 rotates, it is driven to drill into the rock wall by the upward movement of the lifting seat 4, thereby completing the drilling and sampling work, and the rock and soil samples that fall down The rock is dropped into the receiving trough 10, and enters the screening plate 13 after being decelerated by the speed reduction belt 12. The driving shaft structure is used to push the separation structure and the sampling drill 9 for synchronous driving. When the driving seat 15 uses the motor to drive the driving shaft 14 to rotate, the sampling drill 9 is driven through the pulley pair 16 to make it rotate quickly into the rock wall to complete the sampling work. The pushing and separating structure connected to the driving shaft 14 can complete the screening of the sampled rock and soil, so that the soil and rock enter the detection structure accordingly to complete the rapid on-site real-time detection. The pushing and separating structure relies on the screening plate 13 as the main body, and can complete the efficient separation of rock and soil when the rock and soil fall into the screening plate 13, and send them to the corresponding detection In the structure, specifically, the leakage groove 17 and the full-through groove 18 arranged on the screening plate 13 are used for the passage of finer soil and larger rocks respectively. The driving shaft 14 is installed at the center of the screening plate 13, and the first mesh plate 19 is fixedly connected to the driving shaft 14. When the driving shaft 14 rotates, the first mesh plate 19 can rotate along with it, and the second mesh plate 21 is pushed by the first mesh plate 19. First, the two overlap together. Since the leakage holes of the two are staggered, there is no gap after overlapping, which is similar to a flat plate structure, and can push the rocks and soil together and quickly transfer them away from the falling place. Then, by energizing the electromagnet 23, a magnetic repulsion force is generated on the magnetic block 22, so that the second mesh plate 21 is separated from the first mesh plate 19, and the leakage holes of the two are exposed. The soil is allowed to remain and fall from the mesh slot 17, while the remaining rock is pushed by the two mesh plates until it enters the full-through slot 18, completing efficient screening. Finally, the soil enters the humidity detection box 37 from the mesh slot 17, and the rock enters the strength detection box 36 from the full-through slot 18, respectively completing the moisture content and strength tests of the samples taken, completing the detection of the geotechnical environment of the tunnel construction, and effectively avoiding safety problems during drilling and blasting construction. At the same time, considering the complex environment in the tunnel, in order to prevent the detection structure of the present invention from being damaged by falling rocks, a protective cover structure is also provided, which can be activated when a small range of rock and soil collapse is detected during the sampling process to effectively protect the device. When in use,The protective cover 28 can be driven to rotate and cover the sampling drill bit 9 and the screening disc 13 by rotating the flip rod 27 on the mounting seat 26, effectively preventing damage caused by falling rocks. The protective cover 28 is a spherical structure, which can effectively guide falling rocks to the surroundings to reduce damage, and is provided with a high-strength rotating top 31 as the main anti-collision part. The rotating top 31 is also rotatably installed using a guide ring 30, and can be rotated to further achieve the effect of buffering and unloading force. When the protective cover 28 is protecting, the driven rod 32 on the rotating top 31 can be connected to the linkage rod 24 through a slot 33 with a limiting slot 34, and the rotating top 31 can be driven to rotate synchronously through the linkage rod 24, and automatically rotate when the protective cover 28 is closed for protection.

[0050] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A detection system for geotechnical engineering tunnel drilling and blasting construction, comprising a trolley seat (1), characterized in that: The trolley seat (1) is fixedly mounted with a guide rod (2), and a mounting sleeve (3) is slidably mounted on the guide rod (2); the mounting sleeve (3) is fixedly connected with a lifting seat (4), and the lifting seat (4) is fixedly connected with a cylinder (5); the lifting seat (4) is fixedly connected with a working platform (6), and the working platform (6) is fixedly connected with a reinforcing rod (7); the working platform (6) is fixedly mounted with an axle seat (8), and a sampling drill bit (9) is rotatably mounted on the axle seat (8); the working platform (6) is fixedly mounted with a material receiving trough (10), and the material receiving trough (10) is connected through a through hole (11) ) is sleeved on the sampling drill bit (9), the material receiving trough (10) is provided with a speed reduction belt (12), a screening disc (13) is fixedly mounted on the working platform (6), and a driving shaft structure with a linkage function is mounted on the screening disc (13), a pushing separation structure with a separation and combination function is mounted on the screening disc (13), and the pushing separation structure is connected to the driving shaft structure, a protective cover structure with a split rotation function is mounted on the working platform (6), and a strength detection box (36) and a humidity detection box (37) are fixedly mounted on the working platform (6), both of which are connected to the screening disc (13); The drive shaft structure comprises a drive shaft (14) rotatably mounted on a screening disc (13), and the drive shaft (14) is driven by a drive seat (15), a motor is fixedly mounted in the drive seat (15), and a pulley pair (16) is fixedly connected to the drive shaft (14), and the pulley pair (16) is connected to a mounting shaft of a sampling drill bit (9); The push-and-separate structure comprises a mesh slot (17) and a full-through slot (18) arranged on a screening disc (13), and the push-and-separate structure further comprises a first mesh plate (19) fixedly mounted on a driving shaft (14), and a hanging ring (20) sleeved on the driving shaft (14), a second mesh plate (21) being fixedly connected to the hanging ring (20), a magnetic block (22) being fixedly mounted on the second mesh plate (21), and an electromagnet (23) being fixedly mounted on the first mesh plate (19); The mesh slot (17) and the full-through slot (18) are symmetrically arranged on the screening plate (13), and the mesh slot (17) is a slot body with a filter screen, and the full-through slot (18) is a straight slot. The strength detection box (36) and the humidity detection box (37) are respectively connected to the full-through slot (18) and the mesh slot (17). The first mesh plate (19) and the second mesh plate (21) are both flat plate structures with leakage holes, and the leakage holes of the two are staggered. The magnetic block (22) and the electromagnet (23) are respectively installed on the top of the second mesh plate (21) and the first mesh plate (19).

2. A detection system for geotechnical engineering tunnel drilling and blasting construction according to claim 1, characterized in that: The protective cover structure comprises a mounting seat (26) fixedly mounted on the working platform (6), and a flip rod (27) is rotatably mounted on the mounting seat (26), the flip rod (27) is driven by a second motor, and a protective cover (28) is fixedly connected to the flip rod (27), a hanging piece (29) is fixedly mounted on the protective cover (28), and a guide ring (30) is rotatably mounted in the hanging piece (29), and the guide ring (30) is fixedly connected to the rotating top (31), and the protective cover structure also comprises a receiving seat (35) fixedly mounted on the working platform (6).

3. A detection system for geotechnical engineering tunnel drilling and blasting construction according to claim 2, characterized in that: The protective cover (28) and the rotating top (31) form a hemispherical structure, and the rotating top (31) is mounted on a through groove in the center of the protective cover (28). The hanging piece (29) is mounted in a ring shape on the inner wall of the protective cover (28), and a rotating groove is provided in the hanging piece (29). The guide ring (30) is limitedly connected in the rotating groove.

4. A detection system for geotechnical engineering tunnel drilling and blasting construction according to claim 3, characterized in that: A linkage rod (24) is fixedly mounted on the driving shaft (14), and a limit block (25) is fixedly mounted on the linkage rod (24); a driven rod (32) is fixedly mounted on the rotating top (31), and a slot (33) is provided on the driven rod (32), and the slot (33) is connected to the limit slot (34); the driven rod (32) is fixedly connected to the center position of the inner wall of the rotating top (31), and the linkage rod (24) is fixedly mounted on the top of the driving shaft (14).

5. A detection system for geotechnical engineering tunnel drilling and blasting construction according to claim 1, characterized in that: The trolley seat (1) is installed on the top of the tunnel trolley, and four guide rods (2) are balancedly installed on the top of the trolley seat (1). The mounting sleeve (3) is provided with a slide groove, which is sleeved on the guide rod (2). The lifting seat (4) is balancedly installed on the top of the mounting sleeve (3). The base of the cylinder (5) is fixedly installed on the trolley seat (1), and the telescopic end of the cylinder (5) is connected to the lifting seat (4).

6. A detection system for geotechnical engineering tunnel drilling and blasting construction according to claim 1, characterized in that: The reinforcing rod (7) is fixedly mounted on the front end of the working platform (6), and the shaft seat (8) is located at the front end of the working platform. The sampling drill bit (9) is vertically mounted on the top of the shaft seat (8), and the material receiving trough (10) is inclined. The sampling drill bit (9) is arranged to pass through the through hole (11).

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