Test method for quantitative evaluation of blasting vibration human body response and perception
By combining field tests and vibration table tests, a human response model for blasting vibration was established, which solved the problem that the existing evaluation system failed to fully consider the vibration frequency and achieved an accurate assessment of human comfort caused by blasting vibration.
Patent Information
- Application Number
- CN202511280828.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2045-09-09
AI Technical Summary
The existing blasting vibration human comfort evaluation system fails to fully consider important parameters such as vibration frequency, resulting in inaccurate evaluation.
Combining digital image correlation method and finite element numerical calculation, through field tests and vibration table tests, blasting vibration conditions were simulated, a human vibration response model was established, the average growth rate of heart rate variability frequency domain index values was calculated, and its quantitative relationship with human subjective feelings was established, thereby evaluating the relationship between blasting parameters and human comfort.
It realizes the accurate simulation and evaluation of human vibration response under different blasting conditions, makes up for the shortcomings of existing evaluation indicators, and provides a scientific comfort assessment method.
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Figure CN120753655A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of blasting protection, in particular to a test method for quantitatively evaluating human response and perception of blasting vibration. BACKGROUND
[0002] The vibration generated during the blasting process in the fields of construction engineering, mining, transportation construction, etc. not only affects the surrounding buildings and facilities, but also significantly disturbs the human comfort of residents and workers. Long-term exposure to blasting vibration environment may cause discomfort and even health problems in human body, such as fatigue, anxiety, headache, insomnia and cardiovascular diseases, etc. Therefore, it is of great significance to establish a scientific and accurate blasting vibration human comfort evaluation system to protect personnel health, optimize blasting operation design and reduce social conflicts. The blasting vibration human comfort evaluation system analyzes the intensity, frequency, duration and other multi-dimensional parameters of blasting vibration to evaluate the influence of vibration on human body, providing theoretical basis and technical support for safety control and environmental impact assessment of blasting operation. In addition, with the increasing attention of society to environmental protection and health problems, the influence of blasting vibration on human comfort has become an important factor in engineering design and safety management.
[0003] At present, there are many blasting vibration human comfort evaluation systems at home and abroad, mainly including the following: 1. National standard "Blasting Safety Regulations" (GB6722), which arranges vibration sensors around the buildings, structures or ground in the blasting area, and combines the peak vibration velocity collected by the sensors with the long-term experimental research and the physiological response of human body to vibration summarized from engineering practice to provide a scientific basis for the safety of human body around the blasting operation. The peak vibration velocity of the measuring point is the core index for evaluating the safety of blasting vibration. 2. Fanger comfort model extension, Fanger's original model is based on the human body heat balance equation to predict the thermal comfort (PMV, Predicted Mean Vote) and dissatisfaction (PPD, Predicted Percentage Dissatisfied) of human body. The extension model introduces vibration perception on this basis, taking vibration acceleration as a new variable to affect the overall comfort evaluation. The system makes the subjects conduct thermal comfort and vibration perception experiments in different environmental conditions (temperature, humidity, wind speed) laboratory or field, combines thermal comfort (PMV) and vibration perception (vibration acceleration) to establish a comprehensive comfort model to analyze the influence of different environmental conditions and vibration intensity on comprehensive comfort, and determine the comfort threshold of vibration acceleration to provide a basis for comfort control in blasting operation or other complex environments. The core of this system is to predict the thermal comfort of human body by comprehensively considering factors such as environmental temperature, humidity, wind speed, clothing thermal resistance and human activity amount.
[0004] However, the above blasting vibration human comfort evaluation system has certain disadvantages: the national standard "Blasting Safety Regulations" (GB6722) evaluation system only takes vibration velocity as the evaluation index, without considering other important parameters such as vibration frequency, and cannot comprehensively reflect human comfort. SUMMARY
[0005] In order to overcome the shortcomings of the prior art, the present application discloses a test method for blasting vibration human response and perception quantitative evaluation, comprising the following steps: S1, carrying out field test of blasting vibration human response based on digital image correlation method, and collecting soil vibration and human vibration response data obtained from field test; S2, carrying out vibration table test of first field human vibration response under different vibration working conditions based on the field test data obtained in S1, obtaining vibration table parameters for simulating field blasting vibration; and establishing a human vibration response model based on the field test data obtained in S1 using finite element numerical calculation software; S3, carrying out vibration table test of second field human vibration response under different vibration working conditions based on the vibration table parameters obtained in S2, calculating the average growth rate of human heart rate variability frequency domain index value under different vibration working conditions; and calculating and analyzing human vibration response data under different blasting working conditions based on the human vibration response model in S2; S4, establishing a quantitative relationship between the average growth rate of heart rate variability frequency domain index value and human subjective perception under different vibration working conditions based on the second vibration table test in S3 and the average growth rate; S5, establishing a relationship between blasting parameters and human comfort under different blasting working conditions based on the average growth rate in S3 and the quantitative relationship in S4; S6, using the vibration response data of different parts of the human body under different blasting working conditions obtained in S3 and the relationship between blasting parameters and human comfort under different blasting working conditions established in S5 to establish a blasting vibration human comfort zoning.
[0006] Further, the S1 comprises the following steps: S11, vertically placing a first protective box and a second protective box on a flat blasting test site; the first protective box and the second protective box are designed as six sides, the bottom surface is provided with a through hole, one side is an open side, and a rectangular tempered glass is arranged at the center of the side opposite to the open side; the first protective box and the second protective box are arranged with their open sides facing the same direction; the first protective box and the second protective box are placed in front of and behind each other with a distance of 5m between them. S12, recruit a volunteer, let him wear white body suit, white body suit front printed with irregular black dots, to face the first protective box in the second protective box inside; volunteer standing at the second protective box bottom through the surface, feet with the ground soil contact, in the volunteer standing under the position of soil blasting vibration monitor; S13, in the volunteer on the second protective box front and rear sides of the arrangement to ensure that the volunteer white body suit on the black dot clearly visible light source; S14, in the second protective box inside arrangement has high speed camera and its supporting data acquisition equipment; high speed camera camera towards the volunteer in the first protective box; S15, at a distance of 10 m from the back of the second protective box, drill the first blast hole, every 2.5 m behind the first blast hole in turn drill the second blast hole, the third blast hole, the fourth blast hole, the fifth blast hole, the sixth blast hole; in each blast hole filled with the same weight of explosive, and insert electronic detonator in the explosive; S16, carry out blasting vibration human response field test, according to the blast hole number from big to small in turn detonation; after the explosive of each blast hole detonation, wait for the data acquisition equipment to collect data, then carry out the detonation of the next blast hole; S17, after the test, collect the land vibration data collected by the blasting vibration monitor under the volunteer's feet; use computer software to calculate and analyze the vibration and displacement data of the black dots on the white body suit obtained by the high speed camera through shooting the volunteer.
[0007] Further, the S2 comprises the following steps: S21, set a set of vibration table with vibration frequency, vibration direction, vibration mode, vibration intensity adjustment function; the loading frequency adjustment range of the vibration table is 0.1 Hz~100 Hz; the vibration table is used for outputting horizontal, vertical and longitudinal vibration; the vibration table supports fixed frequency and sweep frequency vibration mode; S22, blast vibration monitor is arranged at the center position of the vibration table; S23, let the volunteer wear the same white body suit as in S12 stand on the blast vibration monitor; S24, arrange the light source which ensures that the black dots on the white body suit on the volunteer are clearly visible on the left and right sides of the volunteer's front; S25, white curtain is arranged behind the volunteer; S26, high speed camera is erected 5 m in front of the volunteer's front, and the direction of the high speed camera camera is adjusted so that the volunteer can be completely shot by the high speed camera; S27, carry out the first field human vibration response vibration table test, the volunteer is ready, the test personnel adjusts the vibration table vibration parameters and starts, the vibration table starts to vibrate, the vibration table vibration parameters are changed for many times to realize the vibration table test of the human vibration response under different vibration working conditions; S28, after the test, the vibration data of the vibration table collected by the blast vibration monitor under the volunteer's feet is collected; the vibration and displacement data of the black dot of the white one-piece tight clothes obtained by the high-speed camera through shooting the volunteer are calculated and analyzed by using the computer software; S29, based on the field test data, a human vibration response model is established by using the finite element numerical calculation software; the human vibration response model includes a blast site model and a human model, the top of the blast site model is a free surface, that is, a reflection boundary, and the rest of the surfaces are non-reflection boundaries; the blast site model includes a soil model, an explosive model and a stemming model for plugging the blast hole; the working conditions in the human vibration response model include the first working condition, the second working condition, the third working condition, the fourth working condition, the fifth working condition, the sixth working condition and the seventh working condition, wherein the second working condition is consistent with the third blast hole in the field test; S210, the human vibration response model in S29 is verified by using the data obtained in S17, and a human vibration response model with data error ≤20% is obtained.
[0008] Further, the S3 comprises the following steps: S31, comparative analysis of the data obtained in S17 and S28; S32, repeat S27-S28 until the data error between S28 and S17 is ≤10%, prove that the indoor vibration table test can simulate the field blasting test, and record the data with data error ≤10% between S28 and S17, obtain the vibration table parameters for simulating the field blasting vibration, the vibration table parameters include the vibration frequency, vibration direction, vibration mode and vibration intensity of the vibration table; S33, remove the light source and high-speed camera on the vibration table; S34, the volunteer stands on the vibration table in a standing posture, the test personnel adjusts the vibration parameters of the vibration table to the values in S28 which can simulate the field blasting vibration; the volunteer holds the wireless electrocardiogram recorder and stands on the indoor vibration table; S35, carry out the second vibration table test, after the test starts, first let each subject hold the electrocardiogram recorder to record the heart rate variability frequency domain index value in the resting state; then adjust the vibration table parameters to make the volunteer start to vibrate without knowing the vibration parameters; S36, record the human perception of the volunteer; S37. Recruit 40 to 200 volunteers and conduct vibration table tests on different volunteers using different vibration table parameters. Statistically analyze the human vibration response data under different vibration conditions and calculate the heart rate variability frequency domain index values under different vibration conditions. Classify human perception into five levels: barely perceptible, perceptible, noticeable, uncomfortable, and unpleasant. S38. Perform statistical analysis on the heart rate variability frequency domain index values of the volunteers under different vibration conditions in step S37, and calculate the average growth rate of the heart rate variability frequency domain index values of the volunteers under different vibration conditions compared with the resting state.
[0009] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can simulate the on-site blasting vibration test through the indoor vibration table vibration test by fusing the vibration parameters of the vibration table with the blasting field test data, and at the same time establish the relationship between the blasting parameters and human comfort under different blasting working conditions, which can make up for the shortcomings of the existing evaluation indicators; (2) The present invention combines the on-site test of the human body's blasting vibration response with the digital image correlation method, and based on this, carries out the first vibration table test of the human body's vibration response under different vibration working conditions, obtains the vibration table parameters for simulating on-site blasting vibration, and carries out a large-scale second vibration table test of the human body's vibration response under different vibration working conditions, and calculates and analyzes the human body's vibration response data under different blasting working conditions based on the human body vibration response model, and establishes the quantitative relationship between the average growth rate of the heart rate variability frequency domain index value and the human body's subjective feeling under different vibration working conditions; and then establishes the relationship between the blasting parameters and human comfort under different blasting working conditions, thereby establishing the blasting vibration human comfort zoning to make an accurate evaluation of the human body's perception under different blasting working conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the overall process of the present invention.
[0011] Figure 2 This is a schematic diagram of the layout of the on-site test site in the present invention.
[0012] Figure 3 Schematic diagram of the distribution of black dots on a volunteer wearing a white bodysuit, captured by the protective box of the present invention and a high-speed camera.
[0013] Figure 4 This is a schematic diagram of a volunteer holding a handheld electrocardiogram tester in the present invention.
[0014] Figure 5 This is a schematic diagram of the layout of the vibration table test site in the present invention.
[0015] Figure 6Schematic diagram of the human body vibration response model of the present invention.
[0016] Figure numbers: 1-test site; 2-first protective box; 3-second protective box; 4-high-power light source; 5-high-speed camera; 6-first blast hole; 7-second blast hole; 8-third blast hole; 9-fourth blast hole; 10-fifth blast hole; 11-sixth blast hole; 12-volunteer; 13-white one-piece tights; 14-bottom penetration surface; 15-black dots; 16-blasting vibration monitor; 17-rectangular tempered glass; 18-side opposite to the opening surface; 19-vibration table; 20-data acquisition equipment; 21-white curtain; 22-wireless electrocardiograph; 23-human vibration response model; 24-human body model; 25-blasting mud model; 26-explosive model; 27-soil model; 28-first working condition; 29-second working condition; 30-third working condition; 31-fourth working condition; 32-fifth working condition; 33-sixth working condition; 34-seventh working condition. DETAILED DESCRIPTION
[0017] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0018] Example: Figures 1-6 As shown, the present invention proposes a test method for quantitative evaluation of human response and perception of blasting vibration, comprising the following steps: S1. Conduct a field test of human response to blasting vibration based on the digital image correlation method, and collect soil vibration and human vibration response data obtained from the field test, specifically including the following steps: S11. Place a first protective box 2 and a second protective box 3 upright on a flat blasting test site 1. Each of the first and second protective boxes 2 and 3 is designed to be six-sided, with a through hole on the bottom, an open side, and a rectangular tempered glass 17 at the center of the side 18 opposite the open side. Arrange the first and second protective boxes 2 and 3 with their openings facing the same direction. With the opening direction as the front, place the first and second protective boxes 2 and 3 one in front of the other, 5 meters apart. S12. Recruit a volunteer 12, have them wear a white bodysuit 13 with irregularly distributed black dots 15 printed on the front, and stand inside the second protective box 3 facing the first protective box 2. The volunteer 12 stands on the bottom through-surface 14 of the second protective box 3, with their feet in contact with the surface soil. A soil blasting vibration monitor 16 is placed under the feet of the volunteer 12. S13. Light sources 4 are arranged on the left and right sides of the front of the second protective box 3 where the volunteer 12 is located to ensure that the black dots 15 on the white bodysuit 13 of the volunteer 12 are clearly visible. The light sources 4 are high-power light sources. S14, a high-speed camera 5 and its matching data acquisition equipment 20 are arranged inside the first protective box 2; the camera of the high-speed camera 5 faces the volunteer 12 in the second protective box 3; S15, a first blast hole 6 is drilled 10 m away from the back of the second protective box 3 where the volunteer 12 is located, and a second blast hole 7, a third blast hole 8, a fourth blast hole 9, a fifth blast hole 10, and a sixth blast hole 11 are drilled in turn every 2.5 m behind the first blast hole 6; the same weight of explosives is loaded in each blast hole, and an electronic detonator is inserted into the explosives; S16, a field test of human response to blasting vibration is carried out, and after ensuring that the volunteer 12, the instrument operator, and the explosive initiation personnel in the second protective box 3 are in a safe state, the blast holes are sequentially detonated from large to small according to the blast hole number; after the explosives in each blast hole are detonated, the next blast hole is detonated after the data acquisition equipment 20 collects the data; S17, after the test is completed, the land vibration data collected by the blasting vibration monitor 16 under the feet of the volunteer 12 is collected; and the vibration and displacement data of the black dots 15 of the white one-piece tight clothes 13 of the volunteer 12 obtained by the high-speed camera 5 through shooting are calculated and analyzed by using a computer software.
[0019] S2, based on the field test data obtained in S1, a vibration table 19 test of human vibration response under different vibration working conditions is carried out, and vibration table 19 parameters for simulating field blasting vibration are obtained; and a human vibration response model 23 is established by using a finite element numerical calculation software based on the field test data obtained in S1; specifically including the following steps: S21, a vibration table 19 with functions of adjusting vibration frequency, vibration direction, vibration mode, and vibration intensity is set; the loading frequency adjustment range of the vibration table 19 is 0.1 Hz-100 Hz; the vibration table 19 is used to output horizontal, vertical, and longitudinal vibrations; and the vibration table 19 supports fixed-frequency and sweep-frequency vibration modes; S22, a blasting vibration monitor 16 is arranged at the center position of the vibration table 19; S23, the volunteer 12 wears the same white one-piece tight clothes 13 as in S12 and stands on the blasting vibration monitor 16; S24, light sources 4 are arranged on the left and right sides of the front of the volunteer 12 to ensure that the black dots 15 on the white one-piece tight clothes 13 on the volunteer 12 are clearly visible; S25, a white curtain 21 is arranged behind the volunteer 12; S26, a high-speed camera 5 is erected 5 m in front of the front of the volunteer 12, and the camera direction of the high-speed camera 5 is adjusted so that the volunteer 12 can be completely shot by the high-speed camera 5; S27, the first field of human vibration response of the vibration table 19 test, the volunteer 12 is ready after the test personnel adjust the vibration table 19 vibration parameters and start, the vibration table 19 begins to vibrate, through multiple changes of vibration table 19 vibration parameters realize different vibration conditions of vibration human response of vibration table 19 test; S28, after the test, the vibration data of the vibration table 19 collected by the volunteer 12 under the explosion vibration monitor 16; the vibration, displacement data of the black dot 15 of the white one-piece tight clothes 13 obtained by the high-speed camera 5 through shooting the volunteer 12 are calculated and analyzed by computer software; S29, based on the field test data, the human vibration response model 23 is established by using finite element numerical calculation software; the human vibration response model 23 includes a blasting site model and a human body model 24, the top of the blasting site model is a free surface, that is, a reflection boundary, and the rest of the surface is a non-reflection boundary; the blasting site model includes a soil model 27, an explosive model 26 and a stemming model 25 for plugging the blast hole; the working condition of the human vibration response model 23 includes the first working condition 28, the second working condition 29, the third working condition 30, the fourth working condition 31, the fifth working condition 32, the sixth working condition 33 and the seventh working condition 34, wherein the second working condition 29 is consistent with the third blast hole 8 of the field test.
[0020] S210, the data obtained in step S17 is used to verify the reliability of the human vibration response model 23 in S29: the vibration data of the black dot 15 obtained under the third blast hole 8 blasting working condition is used to verify the reliability of the second working condition 29 in the human vibration model, and the human vibration response model 23 with data error≤20% is obtained.
[0021] S3, based on the vibration table 19 parameters obtained in S2, the second field of human vibration response of the vibration table 19 test under different vibration working conditions is carried out, and the average growth rate of the human heart rate variability frequency domain index value (HRV) under different vibration working conditions is calculated; and the human vibration response data under different blasting working conditions is calculated and analyzed based on the human vibration response model 23 in S2; specifically including the following steps: S31, comparative analysis of the data obtained in S17 and S28; S32, repeat S27~S28, until the data error of S28 and S17 is≤10%, prove that the indoor vibration table 19 test can simulate the field blasting test, and record the data of S28 and S17 with data error≤10%, obtain the vibration table 19 parameters for simulating the field blasting vibration, the vibration table 19 parameters include the vibration frequency, vibration direction, vibration mode and vibration intensity of the vibration table 19; S33, remove the light source 4 and high-speed camera on the vibration table 19; S34: Volunteer 12 stands on vibration table 19. The test personnel adjust the vibration parameters of vibration table 19 to the values that can simulate the on-site blasting vibration in S28. Volunteer 12 holds wireless ECG recorder 22 and stands on vibration table 19 in the room. S35. Conduct a second vibration table 19 test. First, have each subject hold a handheld electrocardiogram recorder to record the heart rate variability frequency domain index value in the resting state. Then, adjust the vibration table 19 parameters so that the volunteer 12 begins to vibrate without knowing the vibration parameters. S36, recording the human body perception of the volunteer 12; S37. Recruit 40 to 200 volunteers 12, conduct vibration table tests on different volunteers 12 using different vibration table parameters 19, statistically analyze the human vibration response data under different vibration conditions, and calculate the heart rate variability frequency domain index values under different vibration conditions; classify the human perception into five levels: almost imperceptible, perceptible, noticeable, uncomfortable, and disgusting; S38. Perform statistical analysis on the heart rate variability frequency domain index values of the volunteer 12 under different vibration conditions in step S37, and calculate the average growth rate of the heart rate variability frequency domain index values of the volunteer 12 under different vibration conditions compared with the resting state.
[0022] S4. Based on the second vibration table 19 test and the average growth rate in S3, a quantitative relationship between the average growth rate of the heart rate variability frequency domain index value and the subjective feeling of the human body under different vibration working conditions is established, as shown in Table 1.
[0023] Table 1 - Relationship between average HRV growth rate and human comfort
[0024] S5. Based on the average growth rate in S3 and the quantitative relationship in S4, the relationship between blasting parameters and human comfort under different blasting conditions is established, as shown in Table 2.
[0025] Table 2 - Relationship between vibration parameters of vibration table and human comfort
[0026] S6. Use the vibration response data of different parts of the human body under different blasting conditions obtained in S3 and the relationship between blasting parameters and human comfort under different blasting conditions established in S5 to establish blasting vibration human comfort zones, as shown in Table 3.
[0027] Table 3- Blasting vibration human comfort level division
Claims
1. A test method for quantitative evaluation of human response and perception to blasting vibration, characterized in that: The following steps are involved: S1. Conduct field tests on human response to blasting vibration based on digital image correlation method, and collect soil vibration and human vibration response data obtained from the field tests; S2. Based on the field test data obtained in S1, conduct a first shaking table test of human vibration response under different vibration conditions to obtain shaking table parameters for simulating on-site blasting vibration; and establish a human vibration response model using finite element numerical calculation software based on the field test data obtained in S1; S3. Based on the vibration table parameters obtained in S2, conduct a second vibration table test of human vibration response under different vibration working conditions, calculate the average growth rate of the frequency domain index value of human heart rate variability under different vibration working conditions; and calculate and analyze the human vibration response data under different blasting working conditions based on the human vibration response model in S2; S4. Based on the second vibration table test and the average growth rate in S3, a quantitative relationship between the average growth rate of the heart rate variability frequency domain index value and the subjective feeling of the human body under different vibration working conditions is established; S5. Based on the average growth rate in S3 and the quantitative relationship in S4, the relationship between blasting parameters and human comfort under different blasting conditions is established; S6. Use the vibration response data of different parts of the human body under different blasting working conditions obtained in S3 and the relationship between blasting parameters and human comfort under different blasting working conditions established in S5 to establish blasting vibration human comfort zones.
2. The test method for quantitative evaluation of human response and perception to blasting vibration according to claim 1, characterized in that: Said S1 comprises the following steps: S11. Place the first and second protective boxes upright on a flat blasting test site. Each of the first and second protective boxes is designed to have six sides, with a through hole on the bottom, an open side, and a rectangular tempered glass panel in the center of the side opposite the open side. Place the first and second protective boxes with their openings facing the same direction. With the opening direction as the front, the first and second protective boxes are placed 5 meters apart, one in front of the other. S12. Recruit a volunteer and have them wear a white bodysuit with irregularly distributed black dots printed on the front. Have them stand inside the second protective box, facing the first. The volunteer should stand on the bottom through-hole of the second protective box, with their feet in contact with the surface soil. A soil blasting vibration monitor should be placed under the volunteer's feet. S13. Place light sources on the left and right sides of the front of the second protective box where the volunteer is located to ensure that the black dots on the volunteer's white bodysuit are clearly visible; S14. A high-speed camera and its associated data acquisition equipment are placed inside the second protective box; the camera head of the high-speed camera is directed toward the volunteer in the first protective box; S15. Drill a first blasthole 10 m from the rear of the second protective box. Drill a second blasthole, a third blasthole, a fourth blasthole, a fifth blasthole, and a sixth blasthole at intervals of 2.5 m behind the first blasthole. Load each blasthole with the same weight of explosives and insert electronic detonators into the explosives. S16. Conduct a field test on the human body's response to blasting vibration, detonating the explosives in descending order of blasthole number; after detonating the explosives in each blasthole, wait for the data acquisition equipment to collect data before detonating the next blasthole; S17. After the test, collect the ground vibration data collected by the blasting vibration monitor under the feet of the volunteers; use computer software to calculate and analyze the vibration and displacement data of the black dots on the white bodysuit obtained by filming the volunteers with a high-speed camera.
3. The test method for quantitative evaluation of human response and perception to blasting vibration according to claim 2, characterized in that: The S2 comprises the following steps: S21. Set up a vibration table with functions for adjusting vibration frequency, vibration direction, vibration mode, and vibration intensity; the vibration table's loading frequency adjustment range is 0.1Hz~100Hz; the vibration table is used to output vibration in the horizontal, vertical, and longitudinal directions; the vibration table supports fixed frequency and swept frequency vibration modes; S22. Install a blasting vibration monitor at the center of the vibration table; S23. Have the volunteers wear the same white bodysuit as in S12 and stand on the blasting vibration monitor. S24. Place light sources on both sides of the volunteer's front to ensure that the black dots on the volunteer's white bodysuit are clearly visible. S25. Place a white curtain behind the volunteers; S26. Set up a high-speed camera 5 meters in front of the volunteer and adjust the camera's direction so that the volunteer can be fully captured by the camera. S27. Conduct the first vibration table test on human vibration response. After the volunteers are ready, the test personnel adjust the vibration table's vibration parameters and start it. The vibration table begins to vibrate. By changing the vibration table's vibration parameters multiple times, vibration table tests on human vibration response under different vibration conditions are conducted. S28. After the test, collect vibration data from the vibration table collected by the blasting vibration monitor under the volunteer's feet; use computer software to calculate and analyze the vibration and displacement data of the black dots on the white bodysuit obtained by filming the volunteer with a high-speed camera; S29. A human body vibration response model is established using finite element numerical calculation software based on the field test data. The human body vibration response model includes a blasting site model and a human body model. The top of the blasting site model is a free surface, i.e., a reflective boundary, and the remaining surfaces are non-reflective boundaries. The blasting site model includes a soil model, an explosive model, and a model of blasthole plugging mud. The operating conditions in the human body vibration response model include a first operating condition, a second operating condition, a third operating condition, a fourth operating condition, a fifth operating condition, a sixth operating condition, and a seventh operating condition, wherein the second operating condition is consistent with the condition of the third blasthole in the field test. S210 , using the data obtained in step S17 to verify the human body vibration response model in step S29 , to obtain a human body vibration response model with a data error of ≤20%.
4. The test method for quantitative evaluation of human response and perception to blasting vibration according to claim 3, characterized in that: The S3 includes the following steps: S31, comparing and analyzing the data obtained in S17 and S28; S32, repeat S27-S28 until the error between the data in S28 and the data in S17 is ≤10%, proving that the indoor shaking table test can simulate the field blasting test, and record the data with an error between the data in S28 and S17 ≤10%, and obtain the shaking table parameters for simulating the field blasting vibration, the shaking table parameters including the vibration frequency, vibration direction, vibration mode, and vibration intensity of the shaking table; S33, remove the light source and high-speed camera on the vibration table; S34: The volunteer stands on the vibration table. The test personnel adjust the vibration parameters of the vibration table to the values in S28 that can simulate the vibration of the on-site blasting. The volunteer holds a wireless ECG recorder and stands on the vibration table indoors. S35. Conduct a second vibration table test. At the beginning of the test, each subject first uses a handheld electrocardiogram recorder to record the heart rate variability frequency domain index value in the resting state. Then, adjust the vibration table parameters so that the volunteers start vibrating without knowing the vibration parameters. S36. Record the volunteers’ human body perception; S37. Recruit 40 to 200 volunteers and conduct vibration table tests on different volunteers using different vibration table parameters. Statistically analyze the human vibration response data under different vibration conditions and calculate the heart rate variability frequency domain index values under different vibration conditions. Classify human perception into five levels: barely perceptible, perceptible, noticeable, uncomfortable, and unpleasant. S38. Perform statistical analysis on the heart rate variability frequency domain index values of the volunteers under different vibration conditions in step S37, and calculate the average growth rate of the heart rate variability frequency domain index values of the volunteers under different vibration conditions compared with the resting state.
Citation Information
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