Blasting simulation test device and method based on safety protection barrier test

Abstract

The application discloses a blasting simulation test device based on a safety protection barrier test, which comprises a protection box, the top of the protection box is connected with a mounting cover, the top end of the protection box is provided with an observation window, the top end in the protection box is connected with an operation plate, the bottom end in the protection box is provided with a lifting mechanism, the bottom of the operation plate is fixedly connected with symmetrical supporting rods, the end portions of the two supporting rods are fixedly connected with supporting plates, the lifting mechanism is connected with the supporting plates, the first simulation buildings are fixed on the top center of the operation plate, and four first simulation buildings are equidistantly arranged around the first simulation building, when the blasting test is carried out, the vibration wave influence of the four first simulation buildings around the first simulation building can be observed through the blasting of the explosive agent in the first simulation building, the influence of the multiple first simulation buildings in the test can be obviously observed, the accuracy of the test is improved, and the situation that the test result is inaccurate due to the accidental situation of the single first simulation building is avoided.

Description

Technical Field

[0001] This invention relates to the field of blasting simulation test equipment technology, specifically to a blasting simulation test equipment and method based on a safety protection barrier test. Background Technology

[0002] The internal safety distance of buildings in a fire and explosives factory area is an important measure to ensure the safety of surrounding buildings and production personnel in the event of a hazardous materials explosion. The value of the internal safety distance is determined by the quantity and nature of the stored hazardous materials in combination with the safety protection barrier on the outside of the building.

[0003] Common safety barriers consist of one (single-sided protection) or two (double-sided protection) barriers set up between buildings. These barriers are made of loose materials (usually ordinary soil) piled up into a trapezoidal protective embankment that is wider at the top and narrower at the bottom, with a height that should be 1.0m higher than the line connecting the highest points of the two buildings. The barriers ensure the safety of surrounding buildings and production personnel by blocking the transmission path of the blast shock wave and weakening the shock wave that crosses the protective barrier. When setting up single-sided protection, the internal safety distance between buildings is A. When setting up double-sided protection, the internal safety distance between buildings is (0.6~0.72)A. Setting up double-sided protection can effectively reduce the internal safety calculation distance of buildings. The drawback of ordinary double-sided protection is that when the building is tall, the area occupied by the protective earthen embankment itself is huge. Taking a building height of 18 meters, a single-sided protection internal safety distance of 100 meters, and a double-sided protection internal safety distance of 65 meters as an example, the bottom width of a single protective earthen embankment is generally 37 meters, and the bottom width of two protective earthen embankments is 74 meters. After considering the logistics channel between buildings, the distance between buildings is close to 100 meters, which cannot reflect the effect of double-sided protection on reducing the internal safety distance. Therefore, we propose a blasting simulation test device and method based on the safety protection barrier test. Summary of the Invention

[0004] The purpose of this invention is to provide a blasting simulation test device and method based on a safety protection barrier test, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a blasting simulation test device based on a safety protection barrier test, comprising a protective box, a mounting cover connected to the top of the protective box, an observation window provided at the top of the protective box, an operating panel connected to the top of the interior of the protective box, a lifting mechanism provided at the bottom of the interior of the protective box, support rods symmetrically fixedly connected to the bottom of the operating panel, and support plates fixedly connected to the ends of the two support rods, the lifting mechanism being connected to the support plates, a support mechanism provided at the bottom of the protective box, a test mechanism provided at the top of the operating panel, and a distance adjustment mechanism provided between the operating panel and the support plates.

[0006] Preferably, the test mechanism includes a first simulated building, a second simulated building, a storage trough, a sliding plate, and an adjusting screw. The first simulated building is fixedly connected to the top center of the operating plate. Four second simulated buildings are equidistantly arranged on the top of the operating plate outside the first simulated building. A storage trough is connected between the first and second simulated buildings on the top of the operating plate. Sliding plates are symmetrically slidably connected in the storage trough. Threaded holes are opened on the corresponding two side walls of the storage trough, and adjusting screws are threaded into the threaded holes. One end of the adjusting screw is rotatably connected to the sliding plate. A safety barrier is provided between two sliding plates.

[0007] Preferably, the distance adjustment mechanism includes a lifting screw, a lifting block, an adjusting rod, and a slider. The lifting screw is rotatably connected between the support plate and the operating plate. The lifting block is threadedly connected to the outer side of the lifting screw. Adjusting rods are rotatably connected to the four side walls of the lifting block. The top of the operating plate is provided with positioning grooves at the bottom of the first simulated building, and sliders are slidably connected in the positioning grooves. The end of the adjusting rod is rotatably connected to the bottom end of the slider. The top of the slider passes through the operating plate and is fixedly connected to the second simulated building. Length scales are symmetrically arranged on the top of the operating plate outside the positioning grooves.

[0008] Preferably, the bottom of each side wall of the storage compartment is integrally provided with a protruding plate, and the top of the protruding plate is provided with a locking bolt. The top of the operating plate is provided with fixing holes symmetrically and equidistantly between the first and second simulated buildings, and the end of the locking bolt is threaded into the fixing hole.

[0009] Preferably, a worm gear is fixedly connected to the outer side of one end of the lifting screw on the support plate, and vertical plates are symmetrically fixedly connected to the top of the support plate outside the lifting screw. A worm is rotatably connected between the two vertical plates, and the worm meshes with the worm gear. A rotating motor is fixedly installed on the side wall of the vertical plate, and the end of the output shaft of the rotating motor passes through the vertical plate and is fixedly connected to the worm.

[0010] Preferably, the lifting mechanism includes a mounting plate, a receiving plate, pulleys, and a drive motor. Mounting plates are symmetrically fixedly connected to the top and bottom of the inner wall of the protective box, and lifting screws are rotatably connected between the mounting plates at the top and bottom of the inner wall of the protective box. The bottoms of both lifting screws pass through the mounting plates and are fixedly connected to pulleys, which are connected by a belt drive. A drive motor is fixedly installed at the bottom of the inner wall of the protective box, and the output shaft end of the drive motor is fixedly connected to the central shaft of the pulley. A receiving plate is threaded onto the outer side of the lifting screw, and the receiving plate is slidably connected to the inner wall of the protective box. A support plate is connected to the top of the two receiving plates.

[0011] Preferably, the top of the inner wall of the protective box is provided with guide plates at equal intervals, and the outer side of the operating plate is provided with guide grooves at equal intervals. The guide plates are slidably connected in the guide grooves of the operating plate.

[0012] Preferably, the support mechanism includes casters, a fixed plate, an adjusting threaded rod, and support feet. Casters are equidistantly installed at the bottom of the protective box. A fixed plate is fixedly connected at equidistant intervals to the bottom of the outer side of the protective box, and an adjusting threaded rod is threadedly connected to the fixed plate. Support feet are connected to the bottom of the adjusting threaded rod.

[0013] Preferably, the top of the control panel is provided with lifting handles at equal intervals.

[0014] The method for the blasting simulation test device based on the safety protection barrier test according to any one of the above includes the following steps: Step 1: Move the test device to the operating position, and then adjust the adjusting threaded rod to make the support foot support the ground. During the test, open the installation cover and first conduct a single-sided protection test of a single soil embankment. Adjust the safe distance between the first and second simulated buildings. During adjustment, the control system set in the device controls the rotating motor to rotate the worm gear. The meshing connection between the worm gear and the worm wheel causes the lifting screw to rotate. The threaded connection between the lifting block and the lifting screw causes the lifting block to slide upward. Under the action of the adjusting rod, the slider is pushed away from the second simulated building, thereby causing the first and second simulated buildings to move away from each other. Adjust the first and second simulated buildings to the set safe distance according to the length scale. Step 2: Adjust the position of the storage trough. Adjust the distance between the two sliding plates in the storage trough according to the width of the single earthen embankment on one side. When adjusting, simply rotate the two adjusting screws and refer to the length scale to make the distance between the two sliding plates reach the set requirement. Step 3: Control the drive motor to rotate the pulleys, which in turn rotate the two lifting screws through the transmission connection between the two pulleys. The threaded connection between the receiving plate and the lifting screws raises the receiving plate, which in turn raises the support plate, thus raising the operating plate to the top of the protective box. Explosives are then inserted into the first simulated building. Loose soil is placed in the area between the sliding plates, ensuring that the top of the single-sided protective pile of the single-soil embankment is higher than the connection line between the highest point of the second and first simulated buildings. After all four storage troughs are filled, the drive motor is controlled to return the operating plate to its original position. Then, the installation cover is closed, a blasting test is conducted, and the results are recorded. Step 4: Open the installation cover, raise the control panel to the top of the protective box, and pull out the control panel and its connecting support plate together using the lifting handle. Clean the control panel and the test mechanism, and then conduct a double-earth embankment double-sided protection test. The operation is the same as the previous test, except that you only need to adjust the adjusting screw to make the distance between the two sliding plates and the inner wall of the placement trough adapt to the width of the bottom of the double earth embankment. Place loose soil in the area between the sliding plates and the inner wall of the placement trough, so that the top height of the earth embankment at one end of the first simulated building is greater than the top height of the other earth embankment. Then conduct the test and record the results. Finally, conduct a single earth embankment double-sided protection test. You only need to adjust the distance between the two sliding plates to correspond to the bottom width of the single earth embankment's protective barrier on both sides. Pile loose soil between the two sliding plates. After piling, a safety protection barrier is formed. Finally, conduct the test and record the results.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, by fixing a first simulated building at the top center of the control panel and setting four other first simulated buildings at equal intervals around it, allows for observation of the shock wave effects of the four surrounding first simulated buildings during blasting tests, through the detonation of explosives inside the first simulated building. This enables a clear observation of the influence of multiple first simulated buildings during the test, increasing the accuracy of the test and avoiding inaccurate test results due to unforeseen circumstances caused by setting only one first simulated building.

[0016] This invention features a lifting mechanism that allows for the raising and lowering of the control panel. When it is necessary to pile loose soil on the storage trough, the control panel can be adjusted to the top inside the protective box to prevent the loose soil from scattering. At the same time, when the control panel is adjusted to the top inside the protective box, the control panel and its support plate can be pulled out together by pulling the handle, which facilitates the cleaning of dirt on its components.

[0017] The present invention can adjust the distance between the second simulated building and the first simulated building by setting a distance adjustment mechanism, thereby adjusting the safe distance between the second simulated building and the first simulated building according to the needs of the experiment.

[0018] The present invention enables the movement of the test device by means of the universal wheels at the bottom of the protective box, and provides stable support for the device by means of the fixed plate, the adjusting threaded rod and the support feet.

[0019] This invention reduces the land area required for the protective earthen embankment by setting the safety barrier as a single earthen embankment with double-sided protection, thereby saving land resources in the factory area and reducing project costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the connection structure of the test mechanism of the present invention; Figure 3 This is a schematic diagram of the support mechanism structure of the present invention; Figure 4 This is a schematic diagram of the internal connection structure of the protective box of the present invention; Figure 5 This is a schematic diagram of the internal connection structure of the protective box of the present invention; Figure 6 This is an enlarged structural schematic diagram of point A in the present invention; Figure 7 This is a simplified diagram of the double-sided protection relationship of a single-earth embankment according to the present invention; Figure 8 This is a schematic diagram illustrating the shock wave attenuation principle of a single-earth embankment with double-sided protection according to the present invention.

[0021] In the diagram: 1. Protective box; 2. Mounting cover; 3. Control panel; 4. Test mechanism; 5. Lifting mechanism; 6. Support plate; 7. Support rod; 8. Distance adjustment mechanism; 9. Support mechanism; 10. Observation window; 11. Mounting plate; 12. Lifting screw; 13. Receiving plate; 14. Pulley; 15. Drive motor; 16. Lifting screw; 17. Lifting block; 18. Adjusting rod; 19. Sliding block; 20. Positioning groove; 21. Vertical plate; 22. Worm gear; 23. Worm wheel; 24. Rotating motor; 25. First simulated building; 26. Second simulated building; 27. Storage slot; 28. Sliding plate; 29. ​​Adjusting screw; 30. Safety protection barrier; 31. Length scale; 32. Protruding plate; 33. Locking bolt; 34. Lifting handle; 35. Universal wheel; 36. Fixing plate; 37. Adjusting threaded rod; 38. Support foot; 39. Guide plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-8 The present invention provides a technical solution: a blasting simulation test device based on a safety protection barrier test, including a protective box 1, a mounting cover 2 connected to the top of the protective box 1, an observation window 10 provided at the top of the protective box 1, an operating panel 3 connected to the top of the interior of the protective box 1, and a lifting mechanism 5 provided at the bottom of the interior of the protective box 1.

[0024] It should be noted that the lifting mechanism 5 can lift the operating plate 3. When it is necessary to pile loose soil on the storage trough 27, the operating plate 3 can be adjusted to the top inside the protective box 1 to avoid the loose soil from scattering. At the same time, when the operating plate 3 is adjusted to the top inside the protective box 1, the operating plate 3 and the support plate 6 on it can be pulled out directly by the lifting handle 34, which facilitates the cleaning of dirt on its parts.

[0025] The bottom of the operating plate 3 is symmetrically fixedly connected with support rods 7, and the ends of the two support rods 7 are fixedly connected with support plates 6. The lifting mechanism 5 is connected to the support plate 6. The bottom of the protective box 1 is provided with a support mechanism 9. The top of the operating plate 3 is provided with a test mechanism 4. The distance adjustment mechanism 8 is provided between the operating plate 3 and the support plate 6. The test mechanism 4 facilitates the conduct of blasting tests.

[0026] It should be noted that when using this invention, the test device is moved to the operating position, and then the adjusting threaded rod 37 is adjusted so that the support foot 38 is supported on the ground. During the test, the mounting cover 2 is opened, and a single-sided protection test of a single embankment is first conducted. The safety distance between the first simulated structure 25 and the second simulated structure 26 is adjusted. During adjustment, the control system of the device controls the rotating motor 24 to work, causing the worm gear 22 to rotate. The meshing connection between the worm gear 22 and the worm wheel 23 causes the lifting screw 16 to rotate. The threaded connection between the lifting block 17 and the lifting screw 16 causes the lifting block 17 to slide upward. Under the action of the adjusting rod 18, the slider 19 is pushed away from the second simulated structure 26, thereby causing the first simulated structure 25 and the second simulated structure 26 to move away from each other. After adjusting the first simulated building 25 and the second simulated building 26 to the set safe distance according to the length scale 31, adjust the position of the storage trough 27. Adjust the distance between the two sliding plates 28 in the storage trough 27 according to the width of the single earthen embankment and the protective earthen embankment on one side. During adjustment, only the two adjusting screws 29 need to be rotated. According to the length scale 31, the distance between the two sliding plates 28 is adjusted to the set requirement. Then, control the drive motor 15 to work and make the pulley 14 rotate. Through the transmission connection between the two pulleys 14, the two lifting screws 12 are rotated. Through the threaded connection between the receiving plate 13 and the lifting screws 12, the receiving plate 13 is raised. The two receiving plates 13 drive the support plate 6 to rise, thereby raising the operating plate 3 to the top of the protective box 1. Explosives are placed inside a simulated building 25. Loose soil is placed in the area between sliding plates 28, so that the top of the single-sided protective pile of the single-soil embankment is higher than the connection line between the highest point of the second simulated building 26 and the first simulated building 25. After all four storage troughs 27 are filled, the rotating motor 24 is controlled to operate and the operating plate 3 is returned to its original position. Then, the mounting cover 2 is closed, a blasting test is conducted, and the results are recorded. Then, the mounting cover 2 is opened, and the operating plate 3 is raised to the top of the protective box 1. The operating plate 3 and its connecting support plate 6 are pulled out together using the lifting handle 34. The operating plate 3 and the test mechanism 4 are cleaned. Then, a double-soil embankment double-sided protection test is conducted. The operation is the same as the previous test, except that only the adjusting screw 29 needs to be adjusted so that the two sliding plates 28 are aligned. The distance between the sliding plate 28 and the inner wall of the storage trough 27 is adapted to the width of the bottom of the double earthen embankment. Loose soil is placed in the area between the sliding plate 28 and the inner wall of the storage trough 27, so that the top height of the earthen embankment at one end of the first simulated building 25 is greater than the top height of the other earthen embankment. Then, the test is conducted and the results are recorded. Finally, a single earthen embankment double-sided protection test is conducted. It is only necessary to adjust the distance between the two sliding plates 28 to correspond to the bottom width of the double-sided protection barrier of the single earthen embankment. Loose soil is piled between the two sliding plates 28. After the pile is completed, a safety protection barrier 30 is formed. The test is conducted again and the results are recorded. By comparing the results of multiple tests, the safety protection barrier is set as a single earthen embankment double-sided protection, which can reduce the land area of ​​the protective earthen embankment, thereby saving the plant area land resources and reducing the project cost.

[0027] The test mechanism 4 includes a first simulated building 25, a second simulated building 26, a storage trough 27, a sliding plate 28, and an adjusting screw 29. The first simulated building 25 is fixedly connected to the top center of the operation plate 3. Four second simulated buildings 26 are equidistantly arranged on the top of the operation plate 3 outside the first simulated building 25. The storage trough 27 is connected between the first simulated building 25 and the second simulated building 26 on the top of the operation plate 3. The sliding plate 28 is symmetrically slidably connected inside the storage trough 27. Threaded holes are opened on the corresponding two side walls of the storage trough 27, and the adjusting screw 29 is threadedly connected inside the threaded holes. One end of the adjusting screw 29 is rotatably connected to the sliding plate 28. A safety protection barrier 30 is provided between the two sliding plates 28.

[0028] It should be noted that when conducting the test of a single-soil embankment with single-sided protection (i.e., when the safety protection barrier 30 is a single-soil embankment with single-sided protection), the distance between the two sliding plates 28 in the storage trough 27 is adjusted according to the width of the single-soil embankment with single-sided protection. During adjustment, only the two adjusting screws 29 need to be rotated, and the distance between the two sliding plates 28 is adjusted to the set requirement by referring to the length scale 31. Explosives are then placed into the first simulated building 25, and loose soil is placed in the area between the sliding plates 28 so that the top of the piled single-soil embankment with single-sided protection is higher than the connection line between the second simulated building 26 and the highest point of the first simulated building 25. Then, a blasting test is conducted.

[0029] The distance adjustment mechanism 8 includes a lifting screw 16, a lifting block 17, an adjusting rod 18, and a slider 19. The lifting screw 16 is rotatably connected between the support plate 6 and the operating plate 3. The lifting block 17 is threadedly connected to the outer side of the lifting screw 16. The adjusting rod 18 is rotatably connected to each of the four side walls of the lifting block 17. The top of the operating plate 3 is provided with a positioning groove 20 at the bottom of the first simulated building 25, and the slider 19 is slidably connected in the positioning groove 20. The end of the adjusting rod 18 is rotatably connected to the bottom end of the slider 19. The top of the slider 19 passes through the operating plate 3 and is fixedly connected to the second simulated building 26. The top of the operating plate 3 is symmetrically provided with length scales 31 outside the positioning grooves 20.

[0030] It should be noted that, according to the test, the safety distance between the second simulated building 26 and the first simulated building 25 is adjusted. During adjustment, the control system of the device controls the operation of the rotating motor 24, which causes the worm gear 22 to rotate. The meshing connection between the worm gear 22 and the worm wheel 23 causes the lifting screw 16 to rotate. The threaded connection between the lifting block 17 and the lifting screw 16 causes the lifting block 17 to slide upward. Under the action of the adjusting rod 18, the slider 19 is pushed away from the second simulated building 26, thereby causing the first simulated building 25 and the second simulated building 26 to move away from each other. The first simulated building 25 and the second simulated building 26 are adjusted to the set safety distance according to the length scale 31.

[0031] The bottom of each side wall of the storage trough 27 is integrally provided with a protruding plate 32, and the top of the protruding plate 32 is provided with a locking bolt 33. The top of the operation plate 3 is symmetrically and equally spaced between the first simulated building 25 and the second simulated building 26 with fixing holes. The end of the locking bolt 33 is threaded into the fixing hole.

[0032] It should be noted that this setting facilitates the fixing of the position of the storage slot 27. After the storage slot 27 is placed in a suitable position in the area between the first simulated building 25 and the second simulated building 26, the storage slot 27 is then fixedly connected to the operation plate 3 by the locking bolts 33 on the protruding plate 32.

[0033] The lifting screw 16 is fixedly connected to a worm gear 23 on the outer side of one end of the support plate 6. The top of the support plate 6 is symmetrically fixedly connected to a vertical plate 21 outside the lifting screw 16, and a worm 22 is rotatably connected between the two vertical plates 21. The worm 22 is meshed with the worm gear 23. A rotating motor 24 is fixedly installed on the side wall of the vertical plate 21, and the output shaft end of the rotating motor 24 passes through the vertical plate 21 and is fixedly connected to the worm 22.

[0034] It should be noted that the control system of the device controls the operation of the rotating motor 24, which causes the worm gear 22 to rotate. The meshing connection between the worm gear 22 and the worm wheel 23 causes the lifting screw 16 to rotate. The threaded connection between the lifting block 17 and the lifting screw 16 causes the lifting block 17 to slide upward. Under the action of the adjusting rod 18, the slider 19 is pushed away from the second simulated building 26, thereby causing the first simulated building 25 and the second simulated building 26 to move away from each other. The first simulated building 25 and the second simulated building 26 are adjusted to the set safe distance according to the length scale 31.

[0035] The lifting mechanism 5 includes a mounting plate 11, a receiving plate 13, a pulley 14, and a drive motor 15. The top and bottom of the inner wall of the protective box 1 are symmetrically fixedly connected to the mounting plates 11, and the mounting plates 11 at the top and bottom of the inner wall of the protective box 1 are rotatably connected to the lifting screws 12. The bottom of the two lifting screws 12 passes through the mounting plates 11 and is fixedly connected to the pulleys 14, and the two pulleys 14 are connected by belt drive. The bottom of the inner wall of the protective box 1 is fixedly installed with the drive motor 15, and the output shaft end of the drive motor 15 is fixedly connected to the central shaft of the pulley 14. The outer side of the lifting screw 12 is threadedly connected to the receiving plate 13, and the receiving plate 13 is slidably connected to the inner wall of the protective box 1. The support plate 6 is connected to the top of the two receiving plates 13.

[0036] It should be noted that by controlling the operation of the drive motor 15, the pulley 14 is rotated, and the two lifting screws 12 are rotated through the transmission connection between the two pulleys 14. The support plate 13 is raised through the threaded connection between the support plate 13 and the lifting screws 12. The two support plates 13 drive the support plate 6 to rise, thereby raising the operating plate 3 to the top of the protective box 1.

[0037] The top of the inner wall of the protective box 1 is provided with guide plates 39 at equal intervals, and the outer side of the operating plate 3 is provided with guide grooves at equal intervals. The guide plates 39 are slidably connected in the guide grooves of the operating plate 3.

[0038] It should be noted that the stable lifting and lowering of the control panel 3 can be ensured by the sliding of the guide groove on the control panel 3 outside the guide plate 39 on the inner wall of the protective box 1.

[0039] The support mechanism 9 includes casters 35, a fixed plate 36, an adjusting threaded rod 37, and a support foot 38. Casters 35 are installed at equal intervals at the bottom of the protective box 1. The fixed plate 36 is fixedly connected at equal intervals at the bottom of the outer side of the protective box 1. The adjusting threaded rod 37 is threadedly connected to the fixed plate 36. The support foot 38 is connected to the bottom of the adjusting threaded rod 37.

[0040] It should be noted that the universal wheels 35 at the bottom of the protective box 1 enable the movement of the test device, and the fixed plate 36, the adjusting threaded rod 37 and the support feet 38 work together to provide stable support for the device.

[0041] The top of the control panel 3 is provided with lifting handles 34 at equal intervals.

[0042] It should be noted that when the control panel 3 is adjusted to the top inside the protective box 1, the control panel 3 and its support plate 6 can be pulled out together by pulling the handle 34, which makes it convenient to clean the dirt on its parts.

[0043] The method for the blasting simulation test device based on the safety protection barrier test according to any one of the above includes the following steps: Step 1: Move the test device to the operating position, and then adjust the adjusting threaded rod 37 so that the support foot 38 is supported on the ground. During the test, open the mounting cover 2 and first conduct a single-sided protection test of a single soil embankment. Adjust the safety distance between the first simulated building 25 and the second simulated building 26. During the adjustment, the control system set in the device controls the rotating motor 24 to work, so that the worm 22 rotates. Through the meshing connection between the worm 22 and the worm wheel 23, the lifting screw 16 rotates. Through the threaded connection between the lifting block 17 and the lifting screw 16, the lifting block 17 slides upward. Under the action of the adjusting rod 18, the slider 19 is pushed away from the second simulated building 26, thereby driving the first simulated building 25 and the second simulated building 26 away. Adjust the first simulated building 25 and the second simulated building 26 to the set safety distance according to the length scale 31. Step 2: Adjust the position of the storage trough 27. Adjust the distance between the two sliding plates 28 in the storage trough 27 according to the width of the single earthen embankment and the protective earthen embankment on one side. When adjusting, simply rotate the two adjusting screws 29 and refer to the length scale 31 to make the distance between the two sliding plates 28 reach the set requirements. Step 3: Control the drive motor 15 to rotate the pulley 14, and through the transmission connection between the two pulleys 14, rotate the two lifting screws 12. Through the threaded connection between the receiving plate 13 and the lifting screws 12, the receiving plate 13 is raised. Through the two receiving plates 13, the support plate 6 is raised, and then the operating plate 3 is raised to the top of the protective box 1. Explosives are put into the first simulated building 25. Loose soil is placed in the area between the sliding plates 28 so that the top of the single soil embankment on one side is higher than the connection line between the second simulated building 26 and the highest point of the first simulated building 25. After all four storage slots 27 are filled, control the drive motor 15 to return the operating plate 3 to its original position. Then cover the installation cover 2, conduct the blasting test and record the results. Step 4: Open the installation cover 2, raise the control plate 3 to the top of the protective box 1, and pull out the control plate 3 and its connecting support plate 6 together using the lifting handle 34. Clean the control plate 3 and the test mechanism 4, and then conduct a double-earth embankment double-sided protection test. The operation is the same as the previous test, except that only the adjusting screw 29 needs to be adjusted so that the distance between the two sliding plates 28 and the inner wall of the placement trough 27 is adapted to the width of the bottom of the double earth embankment. Place loose soil in the area between the sliding plates 28 and the inner wall of the placement trough 27, so that the height of the top of the earth embankment at one end of the first simulated building 25 is greater than the height of the top of the other earth embankment. Then conduct the test and record the results. Finally, conduct a single earth embankment double-sided protection test. Only the distance between the two sliding plates 28 needs to be adjusted to correspond to the bottom width of the single earth embankment's protective barriers on both sides. Pile loose soil between the two sliding plates 28. After piling, a safety protection barrier 30 is formed. Finally, conduct the test and record the results. During the double-sided protection test, the safety protection barrier 30 was configured as a single earthen embankment with double-sided protection. Based on relevant shock wave simulation principles, calculations showed that when the initial blast shock wave encountered the first protection barrier, it was blocked by the barrier, and part of the shock wave was redirected and propagated upwards along the slope of the first protection barrier, overlapping with the initial shock wave to form the first attenuation. After the first attenuation, the shock wave passed through the peak of the first protection barrier and entered the expansion section (the space composed of the first and second protection barriers). Due to the rapid expansion of the expansion section, the shock wave propagation space increased, and the shock wave attenuated. Simultaneously, due to the double-slope form of the expansion section, the impact rupture locally formed a backflow vortex field under the guidance of the expansion section, and the two combined to perform a second attenuation of the shock wave. When the shock wave encountered the second protection barrier, it was locally redirected and propagated upwards along the slope of the second protection barrier, overlapping with the shock wave to form a third attenuation. After attenuation, the shock wave passed through the second protection barrier, and the propagation space increased, forming a fourth attenuation. Through the above multiple constraints, blocking, diffusion, and disturbances of the blast shock wave, the shock wave was weakened to a safe range.

[0044] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0045] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blasting simulation test device based on a safety protection barrier test, comprising a protective box (1), wherein the top of the protective box (1) is connected to a mounting cover (2), characterized in that: The protective box (1) is provided with an observation window (10) at the top. The protective box (1) is provided with an operating panel (3) inside. The protective box (1) is provided with a lifting mechanism (5) at the bottom. The bottom of the operating panel (3) is symmetrically fixedly connected with support rods (7), and the ends of the two support rods (7) are fixedly connected with support plates (6). The lifting mechanism (5) is connected to the support plate (6). The bottom of the protective box (1) is provided with a support mechanism (9). The top of the operating panel (3) is provided with a test mechanism (4). The distance adjustment mechanism (8) is provided between the operating panel (3) and the support plate (6). The test mechanism (4) includes a first simulated building (25), a second simulated building (26), a storage trough (27), a sliding plate (28), and an adjusting screw (29). The first simulated building (25) is fixedly connected to the top center of the operating plate (3). Four second simulated buildings (26) are equidistantly arranged on the top of the operating plate (3) outside the first simulated building (25). The storage trough (27) is connected between the first simulated building (25) and the second simulated building (26) on the top of the operating plate (3). The sliding plate (28) is symmetrically slidably connected inside the storage trough (27). Threaded holes are opened on the corresponding two side walls of the storage trough (27), and the adjusting screw (29) is threadedly connected inside the threaded holes. One end of the adjusting screw (29) is rotatably connected to the sliding plate (28). A safety protection barrier (30) is provided between the two sliding plates (28). The distance adjustment mechanism (8) includes a lifting screw (16), a lifting block (17), an adjusting rod (18), and a slider (19). The lifting screw (16) is rotatably connected between the support plate (6) and the operation plate (3). The lifting block (17) is threadedly connected to the outer side of the lifting screw (16). The adjusting rod (18) is rotatably connected to the four side walls of the lifting block (17). The top of the operation plate (3) is provided with a positioning groove (20) at the bottom of the first simulated building (25), and the slider (19) is slidably connected in the positioning groove (20). The end of the adjusting rod (18) is rotatably connected to the bottom end of the slider (19). The top of the slider (19) passes through the operation plate (3) and is fixedly connected to the second simulated building (26). The top of the operation plate (3) is symmetrically provided with length scales (31) outside the positioning groove (20). The bottom of each side wall of the storage trough (27) is integrally provided with a protruding plate (32), and the top of the protruding plate (32) is provided with a locking bolt (33). The top of the operating plate (3) is symmetrically and equally spaced between the first simulated building (25) and the second simulated building (26), and the end of the locking bolt (33) is threaded into the fixing hole. The lifting screw (16) is fixedly connected to a worm gear (23) on the outer side of one end of the support plate (6). The top of the support plate (6) is symmetrically fixedly connected to a vertical plate (21) outside the lifting screw (16), and a worm (22) is rotatably connected between the two vertical plates (21). The worm (22) meshes with the worm gear (23). A rotating motor (24) is fixedly installed on the side wall of the vertical plate (21), and the output shaft end of the rotating motor (24) passes through the vertical plate (21) and is fixedly connected to the worm (22). The lifting mechanism (5) includes a mounting plate (11), a receiving plate (13), a pulley (14), and a drive motor (15). The top and bottom of the inner wall of the protective box (1) are symmetrically fixedly connected to the mounting plate (11), and the mounting plate (11) at the top and bottom of the inner wall of the protective box (1) is rotatably connected to the lifting screw (12). The bottom of the two lifting screws (12) passes through the mounting plate (11) and is fixedly connected to the pulley (14). The two pulleys (14) are connected by belt drive. The bottom of the inner wall of the protective box (1) is fixedly installed with the drive motor (15), and the output shaft end of the drive motor (15) is fixedly connected to the central shaft of the pulley (14). The outer side of the lifting screw (12) is threadedly connected to the receiving plate (13), and the receiving plate (13) is slidably connected to the inner wall of the protective box (1). The support plate (6) is connected to the top of the two receiving plates (13).

2. The blasting simulation test device based on the safety protection barrier test according to claim 1, characterized in that: The top of the inner wall of the protective box (1) is provided with guide plates (39) at equal intervals, and the outer side of the operating plate (3) is provided with guide grooves at equal intervals. The guide plates (39) are slidably connected in the guide grooves of the operating plate (3).

3. The blasting simulation test device based on the safety protection barrier test according to claim 2, characterized in that: The support mechanism (9) includes casters (35), a fixed plate (36), an adjusting threaded rod (37), and a support foot (38). Casters (35) are installed at equal intervals at the bottom of the protective box (1). The fixed plate (36) is fixedly connected at equal intervals at the bottom of the outer side of the protective box (1). The adjusting threaded rod (37) is threadedly connected inside the fixed plate (36). The support foot (38) is connected to the bottom of the adjusting threaded rod (37).

4. The blasting simulation test device based on the safety protection barrier test according to claim 3, characterized in that: The top of the control panel (3) is provided with lifting handles (34) at equal intervals.

5. The method of the blasting simulation test device based on the safety protection barrier test according to claim 4, characterized in that, Includes the following steps: Step 1: Move the test device to the operating position, and then adjust the adjusting threaded rod (37) so that the support foot (38) is supported on the ground. During the test, open the installation cover (2) and first conduct a single-sided protection test of a single soil embankment. Adjust the safe distance between the first simulated building (25) and the second simulated building (26). During the adjustment, control the rotating motor (24) through the control system set in the device to make the worm (22) rotate. Through the meshing connection of the worm (22) and the worm wheel (23), the lifting screw (16) rotates. Through the threaded connection between the lifting block (17) and the lifting screw (16), the lifting block (17) slides up. Under the action of the adjusting rod (18), the slider (19) is pushed away from the second simulated building (26), thereby driving the first simulated building (25) and the second simulated building (26) away. Adjust the first simulated building (25) and the second simulated building (26) to the set safe distance according to the length scale (31). Step 2: Adjust the position of the storage trough (27). Adjust the distance between the two sliding plates (28) in the storage trough (27) according to the width of the single earthen embankment and the protective earthen embankment on one side. When adjusting, just rotate the two adjusting screws (29) and refer to the length scale (31) to make the distance between the two sliding plates (28) reach the set requirements. Step 3: Control the drive motor (15) to make the pulley (14) rotate. Through the transmission connection between the two pulleys (14), the two lifting screws (12) rotate. Through the threaded connection between the receiving plate (13) and the lifting screw (12), the receiving plate (13) is raised. Through the two receiving plates (13), the support plate (6) is raised, and then the operating plate (3) is raised to the top of the protective box (1). Explosives are put into the first simulated building (25). The loose soil is placed in the area between the sliding plates (28) so that the top of the single soil embankment on one side is higher than the connection line between the second simulated building (26) and the highest point of the first simulated building (25). After all four storage slots (27) are piled up, control the drive motor (15) to make the operating plate (3) return to its original position. Then cover the installation cover (2), conduct the blasting test and record the results. Step 4: Open the installation cover (2), control the operation plate (3) to rise to the top of the protective box (1), pull out the operation plate (3) and its connecting support plate (6) together by pulling the handle (34), clean the operation plate (3) and the test mechanism (4), and then carry out the double earthen embankment double-sided protection test. The operation is the same as the previous test. The difference is that only the adjusting screw (29) needs to be adjusted so that the distance between the two sliding plates (28) and the inner wall of the storage trough (27) is adapted to the width of the bottom of the double earthen embankment. Place the loose soil in the area between the sliding plate (28) and the inner wall of the storage trough (27) so that the height of the top of the earthen embankment at one end of the first simulated building (25) is greater than the height of the top of the other earthen embankment. Then carry out the test and record the results. Finally, carry out the single earthen embankment double-sided protection test. Only the distance between the two sliding plates (28) needs to be adjusted to correspond to the bottom width of the single earthen embankment double-sided protection barrier. Pile loose soil between the two sliding plates (28). After piling, a safety protection barrier (30) is formed. Finally, carry out the test and record the results.

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