Drilling blasting explosive energy transfer mode design and data simulation method thereof
By testing rock samples and conducting blasting experiments, an evaluation system for explosive energy transfer was established, and the installation scheme of explosive columns was optimized. This solved the problem of poor energy transfer in traditional borehole blasting and achieved efficient and precise blasting results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional drilling and blasting techniques struggle to achieve efficient and directional energy transfer from explosives, resulting in unsatisfactory blasting effects and potential damage to the surrounding environment. Existing eccentric decoupled charge designs lack refined and systematic research, making it difficult to meet blasting requirements under complex geological conditions.
By preparing rock samples, testing their mechanical parameters, conducting multiple blasting tests, measuring seismic wave energy and fragmentation size, establishing an evaluation system for explosive energy transfer, selecting a suitable explosive charge installation scheme, and optimizing the blasting design using data simulation methods.
It achieves efficient transfer of explosive energy and accurate prediction of blasting effects, improves blasting efficiency and quality, reduces the number of on-site test blasts, and shortens the construction period.
Smart Images
Figure CN121784079A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of blasting engineering technology, and in particular to a design of energy transfer mode for borehole blasting explosives and its data simulation method. Background Technology
[0002] In fields such as construction engineering, mining, and tunnel excavation, borehole blasting technology is a commonly used and efficient method for breaking rocks and soil. However, traditional charge structures often fail to achieve efficient and directional transfer of explosive energy, resulting in unsatisfactory blasting effects, low energy utilization, and potential unnecessary damage to the surrounding environment.
[0003] Eccentric decoupled charge technology, as a novel charging method, can improve the energy transfer efficiency of explosives to a certain extent. However, current design methods still lack refined and systematic research, making it difficult to meet the blasting requirements under complex geological conditions. Summary of the Invention
[0004] To overcome the shortcomings of the prior art, this invention proposes a method for designing energy transfer modes for borehole blasting explosives, comprising the following steps: S11. Prepare rock samples, test the mechanical parameters of the rock samples, and determine the rock type; S12. Conduct blasting tests on multiple groups of rock samples respectively; S13. Measure and compare the average particle size of multiple groups of rock samples. Large block ratio and the total energy of seismic waves in their respective central regions ; S14. Establish an evaluation system for the energy transfer of explosive blasting and determine the installation scheme for explosive columns.
[0005] Further, S11 includes the following steps: S111. Collect rocks from the area to be blasted and prepare multiple sets of rock samples; S112. Analyze the mineral composition and thickness of each layer of the rock sample using an X-ray diffractometer, and determine the rock type based on the proportion of mineral composition. S113. Test the physical properties of the rock sample and measure the longitudinal wave velocity of the rock. and rock density ; Further, S12 includes the following steps: S121. Place multiple groups of rock samples in an environment with the same conditions, and isolate the multiple groups of rock samples from each other so that they do not interfere with each other. S122. Multiple blasting vibration testers are set up at equal intervals with the center as the origin for multiple groups of rock samples. S123. For multiple groups of rock samples, drill multiple identical boreholes on the same diameter circle with their respective centers as the center, and the boreholes on the multiple groups of rock samples have the same size. S124. For each borehole of each group of rock samples, the same explosive charge is installed using an eccentric, decoupled method; when installing the explosive charge, the first group to the... The installation parameters for the rock samples are as follows: the angles between the straight line from the center of the explosive charge to the center of the borehole and the straight line from the center of the borehole to the center of the rock sample are, in order, as follows: The distances from the center of the explosive column to the center of the rock sample are as follows: ; S124. Detonate the explosive column in each borehole of multiple rock samples in sequence.
[0006] Further, S13 includes the following steps: S131. Calculate the total seismic wave energy of multiple rock samples by analyzing the blasting vibration signal data collected by the blasting vibration tester and using the obtained blasting vibration data:
[0007] in, The radius of the borehole is... The total velocity vector of the blasting vibration signal. The duration of the blasting vibration; S132. The average particle size of multiple groups of rock samples was statistically determined using the sieve analysis method. and large block ratio ; S133. Record the total seismic wave energy, average fragmentation size, and large block ratio of each group of rock samples in the corresponding rock sample section of the test result statistics table.
[0008] Further, S14 includes the following steps: S141. Set evaluation coefficients for the test data. The evaluation coefficient for the average crushed particle size is: The evaluation coefficient for the large block ratio is: , =1; When excavating and blasting in a mine: , Both are 0.4. The value is set to 0.2 to improve the crushing effect during blasting excavation of ore; when blasting during tunnel excavation: , Both are 0.3. The value is 0.4 to control the vibration during tunnel excavation and blasting.
[0009] S142. Adjust the corresponding evaluation coefficients according to the requirements of the area to be blasted.
[0010] S143. Based on the evaluation results, select the corresponding explosive charge installation scheme.
[0011] This invention also proposes a data simulation method for the energy transfer mode of borehole blasting explosives, used to simulate the explosive energy in the design method of the energy transfer mode of borehole blasting explosives, including the following steps: S21. Determine the blast energy attenuation coefficient of rock samples using an indoor small-scale blasting test system. Eccentricity Influence Factor Energy transfer coefficient of explosive explosion ; S22. Establish an energy transfer model for explosives, including a rock model, explosive column model, borehole model, and energy detection model, to simulate energy transfer data during actual blasting. S23. Establish the formula for calculating the energy density of explosives:
[0012] in, This refers to the length of the explosive charge. For correction factor, Number of boreholes The rock energy attenuation coefficient is 0.1 ≤ 0.3; For the eccentricity influence factor, 0 < 0.5; This represents the total energy of the explosion. , This is the explosive detonation efficiency coefficient. Energy released when a unit mass of explosive explodes, 0.85≤ ≤0.95; 0°≤ 90°; S24. The energy density of the blast zone of the rock sample was tested using an indoor small-scale blasting test system to verify and correct the method in S23. The value.
[0013] Compared with the prior art, the beneficial effects of the present invention are: (1) By establishing an energy transfer model for blasting explosives and a formula for calculating the energy density of explosive explosions, the present invention can achieve efficient energy transfer of explosives and accurate prediction of blasting effects; (2) The present invention can select a suitable blasting scheme according to the type of project to be excavated and blasted, thereby improving the efficiency and quality of blasting; (3) The present invention can predict the energy density of explosive explosions in advance through preliminary experiments combined with data simulation, reduce the number of on-site test blasts, improve the blasting effect, and shorten the overall construction period. Attached Figure Description
[0014] Figure 1 This is a flowchart of the design method for the energy transfer mode of drilling blasting explosives according to the present invention.
[0015] Figure 2 This is a flowchart of the data simulation method for the energy transfer mode of borehole blasting explosives according to the present invention. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0017] Example: Figures 1-2 As shown, the present invention provides a method for designing the energy transfer mode of borehole blasting explosives, comprising the following steps: S11. Prepare rock samples, test the mechanical parameters of the rock samples, and determine the rock type, including the following steps: S111. Collect rocks from the area to be blasted and prepare multiple sets of rock samples; S112. Analyze the mineral composition and thickness of each layer of the rock sample using an X-ray diffractometer, and determine the rock type based on the proportion of mineral composition. S113. Test the physical properties of the rock sample and measure the longitudinal wave velocity of the rock. and rock density .
[0018] S12. Conduct blasting tests on multiple groups of rock samples, including the following steps: S121. Place multiple groups of rock samples in an environment with the same conditions, and isolate the multiple groups of rock samples from each other so that they do not interfere with each other. S122. Multiple blasting vibration testers are set up at equal intervals with the center as the origin for multiple groups of rock samples. S123. For multiple groups of rock samples, drill multiple identical boreholes on the same diameter circle with their respective centers as the center, and the boreholes on the multiple groups of rock samples have the same size. S124. For each borehole of each group of rock samples, the same explosive charge is installed using an eccentric, decoupled method; when installing the explosive charge, the first group to the... The installation parameters for the rock samples are as follows: the angles between the straight line from the center of the explosive charge to the center of the borehole and the straight line from the center of the borehole to the center of the rock sample are, in order, as follows: The distances from the center of the explosive column to the center of the rock sample are as follows: ; S125, detonate the explosive column in each borehole of multiple rock samples in sequence.
[0019] S13. Measure and compare the average particle size of multiple groups of rock samples. Large block ratio and the total energy of seismic waves in their respective central regions This includes the following steps: S131. Calculate the total seismic wave energy of multiple rock samples by analyzing the blasting vibration signal data collected by the blasting vibration tester and using the obtained blasting vibration data:
[0020] in, The radius of the borehole is... The total velocity vector of the blasting vibration signal. The duration of the blasting vibration; S132. The average particle size of multiple groups of rock samples was statistically determined using the sieve analysis method. and large block ratio ; S133. Record the total seismic wave energy, average fragmentation size, and large block ratio of each group of rock samples in the corresponding rock sample section of the test result statistics table.
[0021] S14. Establish an evaluation system for the energy transfer of explosive blasting and determine the installation scheme for explosive charges, including the following steps: S141. Set evaluation coefficients for the test data. The evaluation coefficient for the average crushed particle size is: The evaluation coefficient for the large block ratio is: , =1; When excavating and blasting in a mine: , Both are 0.4. The value is set to 0.2 to improve the crushing effect during blasting excavation of ore; when blasting during tunnel excavation: , Both are 0.3. The value is 0.4 to control the vibration during tunnel excavation and blasting; S142. Adjust the corresponding evaluation coefficients according to the requirements of the area to be blasted; S143. Based on the evaluation results, select the corresponding explosive charge installation scheme.
[0022] This invention also proposes a data simulation method for the energy transfer mode of borehole blasting explosives, used to simulate the explosive energy in the design method of the energy transfer mode of borehole blasting explosives, including the following steps: S21. Determine the blast energy attenuation coefficient of rock samples using an indoor small-scale blasting test system. Eccentricity Influence Factor Energy transfer coefficient of explosive explosion In this embodiment, the stress-strain measurement method is used to determine the blast energy attenuation coefficient of the rock sample. The eccentricity influence factor of rock samples was determined using the stress measurement method. The energy transfer coefficient of explosives was determined by measuring the energy conversion coefficient of seismic waves. ; S22. Establish an energy transfer model for explosives, including a rock model, explosive column model, borehole model, and energy detection model, to simulate energy transfer data during actual blasting. S23. Establish the formula for calculating the energy density of explosives:
[0023] in, This refers to the length of the explosive charge. For correction factor, Number of boreholes The rock energy attenuation coefficient is 0.1 ≤ 0.3; For the eccentricity influence factor, 0 < 0.5; This represents the total energy of the explosion. , This is the explosive detonation efficiency coefficient. Energy released when a unit mass of explosive explodes, 0.85≤ ≤0.95; 0°≤ 90°; S24. The energy density of the blast zone of the rock sample was tested using an indoor small-scale blasting test system to verify and correct the method in S23. The value.
[0024] Specific examples are as follows: Rock samples were collected from the tunnel to be excavated and blasted, and three sets of rock samples were prepared. X-ray diffraction was used to analyze the mineral composition of the rock samples to determine the rock type. The mineral composition was 65% quartz, 25% feldspar, and 10% mica, identifying the rock type as moderately weathered granite. Acoustic wave velocities were measured on the rock samples using an acoustic wave analyzer. The rock sample was tested using the gas displacement method at a speed of 5000 m / s, and the rock density was measured. The blasting requirement is 2650 kg / m³, and the average crushing particle size is: ≤100mm, large piece rate ≤8%, total energy of seismic waves ≤5000J.
[0025] Three groups of rock samples were placed in a laboratory under the same conditions, separated from each other and without interference. Four blasting vibration testers were set up along the x and y axes with the center of the rock sample as the origin. The distances of the measurement points from the center of the rock sample were 0.3 m and 0.6 m, respectively. Six evenly distributed blast holes were drilled around the center of each sample, with a radius of 25 mm and a depth of 300 mm.
[0026] Each borehole was fitted with emulsion explosive. It weighs 0.2 kg and has a charge length of [missing information]. The explosive efficiency coefficient is 200mm. The energy released when a unit mass of explosive explodes is 0.9. It is 4.2 MJ / kg.
[0027] Table 1-3 shows the installation parameters of the explosive charge in the rock samples.
[0028] The explosive is detonated, and the blasting vibration signal data collected by the blasting vibration tester is used.
[0029] Table 2-3 shows the test results of the rock samples.
[0030] During tunnel excavation and blasting: , Both are 0.3. 0.4: Average crushed particle size normalized value: = ; Standardized value of bulk ratio: = ; Normalized seismic wave energy: =
[0031] The overall scores are calculated as follows: Group 1 is 0.1395, Group 2 is 0.1888, and Group 3 is 0.1445. Therefore, the option in Group 2 is selected.
[0032] Determining the blast energy attenuation coefficient of rock samples using an indoor small-scale blasting test system It is 0.2 eccentricity influence factor of rock samples The energy transfer coefficient of the explosive is 0.3. It is 0.4.
[0033] In this embodiment , Using 0.9, calculate the total energy of the explosion. =6×0.9×0.2×4.2× =4.536× J, thus yielding the explosive energy density: =1.2× J / m³.
[0034] The measured energy density using an indoor small-scale blasting test system was 1.22 × J / m³, with a relative error of 1.6%, meets the requirements, therefore, we take... .
Claims
1. A method for designing energy transfer modes for borehole blasting explosives, characterized in that, Includes the following steps: S11. Prepare rock samples, test the mechanical parameters of the rock samples, and determine the rock type; S12. Conduct blasting tests on multiple groups of rock samples respectively; S13. Measure and compare the average particle size of multiple groups of rock samples. Large block ratio and the total energy of seismic waves in their respective central regions ; S14. Establish an evaluation system for the energy transfer of explosive blasting and determine the installation scheme for explosive columns.
2. The method for designing energy transfer modes of borehole blasting explosives as described in claim 1, characterized in that, S11 includes the following steps: S111. Collect rocks from the area to be blasted and prepare multiple sets of rock samples; S112. Analyze the mineral composition of rock samples using an X-ray diffractometer, and determine the rock type based on the proportion of mineral components. S113. Test the physical properties of the rock sample and measure the longitudinal wave velocity of the rock. and rock density .
3. The method for designing energy transfer modes of borehole blasting explosives as described in claim 2, characterized in that, S12 includes the following steps: S121. Place multiple groups of rock samples in an environment with the same conditions, and isolate the multiple groups of rock samples from each other so that they do not interfere with each other. S122. Multiple blasting vibration testers are set up at equal intervals with the center as the origin for multiple groups of rock samples. S123. For multiple groups of rock samples, drill multiple identical boreholes on the same diameter circle with their respective centers as the center, and the boreholes on the multiple groups of rock samples have the same size. S124. For each borehole of each group of rock samples, the same explosive charge is installed using an eccentric, decoupled method; when installing the explosive charge, the first group to the... The installation parameters for the rock samples are as follows: the angles between the straight line from the center of the explosive charge to the center of the borehole and the straight line from the center of the borehole to the center of the rock sample are, in order, as follows: The distances from the center of the explosive column to the center of the rock sample are as follows: ; S125, detonate the explosive column in each borehole of multiple rock samples in sequence.
4. The method for designing energy transfer modes of borehole blasting explosives as described in claim 3, characterized in that, S13 includes the following steps: S131. Calculate the total seismic wave energy of multiple rock samples by analyzing the blasting vibration signal data collected by the blasting vibration tester and using the obtained blasting vibration data: ； in, The radius of the borehole is... The total velocity vector of the blasting vibration signal. The duration of the blasting vibration; S132. The average particle size of multiple groups of rock samples was statistically determined using the sieve analysis method. and large block ratio ; S133. Record the total seismic wave energy, average fragmentation size, and large block ratio of each group of rock samples in the corresponding rock sample section of the test result statistics table.
5. The method for designing energy transfer modes of borehole blasting explosives as described in claim 4, characterized in that, S14 includes the following steps: S141. Set evaluation coefficients for the test data. The evaluation coefficient for the average crushed particle size is: The evaluation coefficient for the large block ratio is: , =1; S142. Adjust the corresponding evaluation coefficients according to the requirements of the area to be blasted; S143. Based on the evaluation results, select the corresponding explosive charge installation scheme.
6. A data simulation method for energy transfer modes of borehole blasting explosives, used to simulate the explosive energy in the design method for energy transfer modes of borehole blasting explosives as described in claim 5, characterized in that, Includes the following steps: S21. Determine the blast energy attenuation coefficient of rock samples using an indoor small-scale blasting test system. Eccentricity Influence Factor Energy transfer coefficient of explosive explosion ; S22. Establish an energy transfer model for explosives, including a rock model, explosive column model, borehole model, and energy detection model, to simulate energy transfer data during actual blasting. S23. Establish the formula for calculating the energy density of explosives: ； in, This refers to the length of the explosive charge. For correction factor, Number of boreholes The rock energy attenuation coefficient is 0.1 ≤ 0.3; For the eccentricity influence factor, 0 < 0.5; This represents the total energy of the explosion. , This is the explosive detonation efficiency coefficient. Energy released when a unit mass of explosive explodes, 0.85≤ ≤0.95; 0°≤ 90°; S24. The energy density of the blast zone of the rock sample was tested using an indoor small-scale blasting test system to verify and correct the method in S23. The value.