Safe blasting construction method

Abstract

The invention discloses a safe blasting construction method. The safe blasting construction method comprises the steps that S1, a blasting area 5 is partitioned; s2, blast hole parameters and blasting parameters are set according to the engineering environment of the corresponding area; s3, establishing a resonance time optimization configuration model, and solving the resonance time optimization configuration model based on a genetic algorithm to obtain the minimum time of resonance generation of the blast hole; and S4, setting the inter-hole delay blasting time of the corresponding area according to the obtained minimum resonance time generated by each blasting hole. The method comprises the following steps: establishing a resonance time optimization configuration model, solving the resonance time optimization configuration model based on a genetic algorithm to obtain the minimum time for generating resonance by a blast hole, and setting the inter-hole delay blasting time of each region to be greater than the minimum resonance time obtained through the genetic algorithm under the condition of determining an individual to be solved. The total blasting time is reduced on the premise that resonance is not generated during blasting of all the areas, and the noise pollution time on the periphery of a project is shortened.

Description

Technical Field

[0001] The invention relates to the field of engineering construction, and in particular to a safe blasting construction method. Background Art

[0002] A cofferdam is a temporary retaining structure built during the construction of a water conservancy project. It is mainly used to prevent water and soil from entering the construction site of a building so that drainage, foundation pit excavation and construction of buildings can be carried out within the cofferdam. The cofferdam is usually dismantled after use, and sometimes becomes part of a permanent project.

[0003] Blasting is generally used for cofferdam demolition, which may cause rock collapse, affect slope stability, and cause risks such as damage to underground projects. Especially when the demolition area is large and there are many points that need to be detonated, there may also be a risk of resonance during blasting, damaging underground projects and surrounding buildings. Generally, inter-hole delay blasting is used to avoid resonance during blasting. The current inter-hole delay blasting time is determined by engineering experience, which may result in long blasting time and long noise pollution to the surrounding areas of the project. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the time delay blasting time between holes determined during multi-point blasting demolition of a project currently adopts an empirical value, resulting in a long blasting time and a long noise pollution time around the project. The purpose is to provide a safe blasting construction method, which can reduce the total blasting time and the noise pollution time around the project without generating resonance in each area during blasting.

[0005] The present invention is achieved through the following technical solutions:

[0006] A safe blasting construction method comprises the following steps:

[0007] S1, divide the blasting area into multiple areas;

[0008] S2, setting the blasthole parameters and blasting parameters according to the engineering environment of the corresponding area;

[0009] S3, establishing a resonance time optimization configuration model, and solving the resonance time optimization configuration model based on a genetic algorithm to obtain the minimum time for the blasting hole to generate resonance;

[0010] S4, setting the inter-hole delayed blasting time of the corresponding area according to the obtained minimum resonance time generated by each blasting hole.

[0011] The beneficial effect of the present invention is that the blasting area is first divided into zones, and then the blasthole parameters and blasting parameters are set according to the engineering environment of the corresponding area, so that the corresponding blasthole parameters and blasting parameters can be accurately set to obtain an ideal demolition effect. A resonance time optimization configuration model is also established, and the resonance time optimization configuration model is solved based on a genetic algorithm to obtain the minimum time for the blasting hole to resonate, and then the individual values ​​to be solved based on the minimum time for the blasting hole to resonate are obtained. On the premise of determining the individuals to be solved, the inter-hole delayed blasting time of each area is set to be greater than the minimum resonance time obtained by the genetic algorithm, so that each area can reduce the total blasting time without generating resonance during blasting, and reduce the noise pollution time around the project.

[0012] In some embodiments, the blasting area of ​​step S1 is divided into a pre-splitting blasting area, a buffer blasting area and a main blasting area, the pre-splitting blasting area is located at the boundary between the cofferdam demolition part and the cofferdam retention part, the buffer blasting area is located at the cofferdam slope, and the main blasting area is the other area of ​​the blasting area except the pre-splitting blasting area and the buffer blasting area. By dividing the blasting area into the pre-splitting blasting area, the buffer blasting area and the main blasting area, it is easy to adapt to different blasting environments to obtain an ideal demolition effect and reduce demolition costs.

[0013] In some embodiments, the blasthole parameters of step S2 include a blasthole inclination angle and a blasthole depth. The blasthole inclination angle of the pre-splitting blasting zone is the same as the corresponding slope ratio, and the blasthole depth is shallower than the corresponding side slope step depth; the blasthole inclination angle of the buffer blasting zone is the same as the corresponding slope ratio, and the blasthole depth is shallower than the corresponding side slope step depth; the blasthole in the main blasting zone is perpendicular to the surrounding rock, and the blasthole depth is shallower than the corresponding side slope step depth. The blasthole inclination angles and blasthole depths of the pre-splitting blasting zone, the buffer blasting zone, and the main blasting zone are set separately to adapt to different blasting environments.

[0014] In some embodiments, the blasthole parameters of step S2 further include a row spacing W between blastholes, and the row spacing W between blastholes is obtained by a first calculation formula, and the first calculation formula is:

[0015] W = (20-40) d;

[0016] Wherein, W is the minimum resistance line of 1.4m to 2.8m, and d is the diameter of the charge roll. By setting the first calculation formula, the spacing between blastholes in different blasting areas is obtained, so as to achieve a good blasting demolition effect during blasting.

[0017] In some embodiments, the blast hole parameters of step S2 further include a blast hole spacing α, and the blast hole spacing α is obtained by a second calculation formula, and the second calculation formula is:

[0018] α=(7~12)·D;

[0019] Among them, α is the blasthole spacing, and D is the blasthole diameter. By setting the second calculation formula, the blasthole spacing in different blasting areas is obtained, which is convenient for achieving a good blasting demolition effect during blasting.

[0020] In some embodiments, the blasting parameters of step S2 include the vibration velocity V of the explosion point, the maximum single-shot charge Q, the closest distance R from the center of the charge to the building (structure), the terrain coefficient K between the blasting point and the protected object, and the geological condition coefficient s between the blasting point and the protected object that satisfy the first equation, and the first equation is:

[0021] V=K(Q 1 / 3 / R) s By setting the first equation, the vibration speed V of the explosion point, the maximum single-shot charge Q, and the closest distance R from the center of the explosive package to the building (structure) can satisfy the first equation, thus achieving the explosion effect under the premise of ensuring explosion safety.

[0022] In some embodiments, the shortest distance R from the center of the drug package to the building (structure) is obtained by a third calculation formula, and the third calculation formula is:

[0023]

[0024] Among them, K is a coefficient of 1 to 1.2 related to the charging path and the degree of blasting, and Q is the maximum single-shot charge. The closest distance from the center of the explosive package to the building (structure) is obtained by setting the third calculation formula to ensure the safety of the buildings around the explosion point.

[0025] In some embodiments, the blasting parameters of step S2 also include the linear charge density △ line and the surrounding rock ultimate compressive strength R that satisfy the second equation: 压 , the second equation is:

[0026] △ 线 =0.42·[R 压 ] 0.5 α 0.6 ;

[0027] Among them, the distance between blast holes is α. By setting the second equation, the demolition effect of the explosion point is ensured.

[0028] In some embodiments, the specific process of establishing the resonance time optimization configuration model based on the genetic algorithm is:

[0029] S3.1, setting the number of iterations of the genetic algorithm and the number of individuals to be solved in each generation population, wherein each individual to be solved includes the blast hole spacing α, the blast hole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S;

[0030] S3.2. Establish a resonance time optimization configuration model, wherein the resonance time optimization configuration model includes an objective function and constraints, wherein the objective function is:

[0031] min(T S );

[0032] Among them, T s The time for the explosion point to resonate;

[0033] S3.3, encode the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S to obtain the encoding value of the individual to be solved, and randomly generate an initial population formed by a number of individuals to be solved based on the constraint conditions, let the initial population be the parent population, let the individual to be solved in the parent population be the parent individual, and the encoding value of each parent individual includes the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S;

[0034] S3.4, bring the coding values ​​of each individual of the parent population into the simulation system for blasting simulation, and obtain the actual resonance time T of the blasting point s , the actual resonance time T s That is the simulation result of the explosion simulation;

[0035] S3.5, calculating the objective function value of each individual in the parent population according to each simulation result, and then calculating the fitness value of each individual in the parent population according to the fitness function and sorting them;

[0036] S3.6, save the first M parent individuals with the largest fitness values ​​in the parent population, select parent individuals from all parent individuals except the first M parent individuals with the largest fitness values ​​through roulette wheel to perform crossover mutation operations to obtain child individuals, calculate the fitness values ​​of the child individuals after crossover mutation and sort them, reinsert the child individuals into the parent population according to the fitness values, select a set number of individuals to be solved to form a new parent population, and then return to S4;

[0037] S3.7, repeat S3.4-S3.6 until the number of iterations is reached or the resonance time difference between two adjacent iterations is less than the set threshold.

[0038] In some embodiments, the fitness function is

[0039] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0040] 1. Divide the blasting area into zones, and then set the blasthole parameters and blasting parameters according to the engineering environment of the corresponding area, so as to accurately set the corresponding blasthole parameters and blasting parameters, and obtain the ideal demolition effect on the basis of ensuring blasting safety.

[0041] 2. Establish a resonance time optimization configuration model, and solve the resonance time optimization configuration model based on the genetic algorithm to obtain the minimum time for the blasting hole to resonate, and then obtain the individual values ​​to be solved based on the minimum time for the blasting hole to resonate. Under the conditions of the determined individuals to be solved, the inter-hole delayed blasting time of each area is set to be greater than the minimum resonance time obtained by the genetic algorithm, so that the total blasting time can be reduced under the premise that no resonance occurs in each area during blasting, thereby reducing the noise pollution time around the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0043] Figure 1 It is a blast hole structure diagram corresponding to each blasting area in the present invention.

[0044] Main blasting hole 1, auxiliary hole 2, buffer blasting hole 3, pre-splitting blasting hole 4, blasting area 5. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0046] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0048] The terms "first" and "second" used in the present invention are only used to distinguish the corresponding components for the sake of clarity of description, and are not intended to limit any order or emphasize importance, etc. In addition, the term "connected" used in this article can be directly connected or indirectly connected via other components without special explanation.

[0049] Example

[0050] A safe blasting construction method is provided, comprising the following steps:

[0051] S1, partition the blasting area 5;

[0052] S2, setting the blasthole parameters and blasting parameters according to the engineering environment of the corresponding area;

[0053] S3, establishing a resonance time optimization configuration model, and solving the resonance time optimization configuration model based on a genetic algorithm to obtain the minimum time for the blasting hole to generate resonance;

[0054] S4, according to the minimum resonance time generated by each blasting hole, the delay blasting time between holes in the corresponding area is set. First, the blasting area 5 is divided into zones, and then the blasting hole parameters and blasting parameters are set according to the engineering environment of the corresponding area, so that the corresponding blasting hole parameters and blasting parameters can be accurately set to obtain the ideal demolition effect. A resonance time optimization configuration model is also established, and the resonance time optimization configuration model is solved based on the genetic algorithm to obtain the minimum time for the blasting hole to resonate, and then the individual values ​​to be solved based on the minimum time for the blasting hole to resonate are obtained. Under the conditions of the determined individuals to be solved, the delay blasting time between holes in each area is set to be greater than the minimum resonance time obtained by the genetic algorithm, so that the total blasting time is reduced under the premise that no resonance is generated in each area during blasting, and the noise pollution time around the project is reduced.

[0055] Specifically, the blasting area in step S1 is divided into a pre-splitting blasting area, a buffer blasting area and a main blasting area, the pre-splitting blasting area is located at the boundary between the cofferdam demolition part and the cofferdam retention part, the buffer blasting area is located at the cofferdam slope, and the main blasting area is the other area of ​​the blasting area except the pre-splitting blasting area and the buffer blasting area. By dividing the blasting area into the pre-splitting blasting area, the buffer blasting area and the main blasting area, it is convenient to adapt to different blasting environments, so as to obtain an ideal demolition effect and reduce the demolition cost.

[0056] See also Figure 1 The blasthole parameters of step S2 include the blasthole inclination angle and blasthole depth. The inclination angle of the pre-splitting blasting hole 4 in the pre-splitting blasting zone is the same as the corresponding slope ratio, and the depth of the pre-splitting blasting hole 4 is shallower than the corresponding slope step depth; the inclination angle of the buffer blasting hole 3 in the buffer blasting zone is the same as the corresponding slope ratio, and the depth of the buffer blasting hole 3 is shallower than the corresponding slope step depth; the main blasting hole 1 in the main blasting zone is perpendicular to the surrounding rock, and the hole depth of the main blasting hole 1 is shallower than the corresponding slope step depth. By setting the blasthole inclination angle and blasthole depth of the pre-splitting blasting zone, the buffer blasting zone and the main blasting zone respectively, different blasting environments can be adapted.

[0057] See also Figure 1 The blasthole parameters of step S2 also include the row spacing W between blastholes, and the row spacing W between blastholes is obtained by a first calculation formula, which is:

[0058] W = (20-40) d;

[0059] Wherein, W is the minimum resistance line of 1.4m to 2.8m, and d is the diameter of the charge roll. By setting the first calculation formula, the spacing between blastholes in different blasting areas is obtained, so as to achieve a good blasting demolition effect during blasting.

[0060] The blast hole parameters of step S2 further include a blast hole spacing α, and the blast hole spacing α is obtained by a second calculation formula, which is:

[0061] α=(7~12)·D;

[0062] Among them, α is the blasthole spacing, and D is the blasthole diameter. By setting the second calculation formula, the blasthole spacing in different blasting areas is obtained, which is convenient for achieving a good blasting demolition effect during blasting.

[0063] The blasting parameters of step S2 include the vibration velocity V of the explosion point, the maximum single-shot charge Q, the closest distance R from the center of the charge to the building (structure), the terrain coefficient K between the blasting point and the protected object, and the geological condition coefficient s between the blasting point and the protected object that satisfy the first equation. The first equation is:

[0064] V=K(Q1 / 3 / R) s By setting the first equation, the vibration speed V of the explosion point, the maximum single-shot charge Q, and the closest distance R from the center of the charge to the building (structure) can satisfy the first equation, and the explosion effect can be achieved under the premise of ensuring explosion safety. Among them, the maximum single-shot charge Q is implemented according to the on-site design requirements.

[0065] The shortest distance R from the center of the drug package to the building (structure) is obtained by the third calculation formula, which is:

[0066]

[0067] Among them, K is a coefficient of 1 to 1.2 related to the charging path and the degree of blasting, and Q is the maximum single-shot charge. The closest distance from the center of the charge to the building (structure) is obtained by setting the third calculation formula to ensure the safety of the buildings around the explosion point. The maximum single-shot charge Q is implemented according to the on-site design requirements.

[0068] Specifically, the blasting parameters of step S2 also include the linear charge density △ line and the surrounding rock ultimate compressive strength R that satisfy the second equation: 压 , the second equation is:

[0069] △ 线 =0.42·[R 压 ] 0.5 α 0.6 ;

[0070] Among them, the distance between blast holes is α. By setting the second equation, the demolition effect of the explosion point is ensured.

[0071] Specifically, the specific process of establishing the resonance time optimization configuration model based on the genetic algorithm is: S3.1, setting the number of iterations of the genetic algorithm and the number of individuals to be solved in each generation population, wherein each of the individuals to be solved includes the blast hole spacing α, the blast hole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S.

[0072] Since the hole spacing α, hole spacing W, explosion source frequency ω, explosion source amplitude A, and explosion source vibration speed S can all affect the time when the explosion resonates, it is an important link to determine the hole spacing, hole spacing, explosion source frequency, explosion source amplitude, and explosion source vibration speed when the blasting area is determined.

[0073] S3.2. Establish a resonance time optimization configuration model, wherein the resonance time optimization configuration model includes an objective function and constraints, wherein the objective function is:

[0074] min(T S );

[0075] Among them, T s The time for the explosion point to resonate;

[0076] S3.3, encode the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S to obtain the encoding value of the individual to be solved, and randomly generate an initial population formed by a number of individuals to be solved based on the constraint conditions, let the initial population be the parent population, let the individual to be solved in the parent population be the parent individual, and the encoding value of each parent individual includes the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S;

[0077] S3.4, bring the coding values ​​of each individual of the parent population into the simulation system for blasting simulation, and obtain the actual resonance time T of the blasting point s , the actual resonance time T s That is the simulation result of the explosion simulation; wherein the coding value of each individual is obtained within the design range of the blasthole parameters and the blasting parameters.

[0078] S3.5, calculating the objective function value of each individual in the parent population according to each simulation result, and then calculating the fitness value of each individual in the parent population according to the fitness function and sorting them;

[0079] S3.6, save the first M parent individuals with the largest fitness values ​​in the parent population, select parent individuals from all parent individuals except the first M parent individuals with the largest fitness values ​​through roulette wheel to perform crossover mutation operations to obtain child individuals, calculate the fitness values ​​of the child individuals after crossover mutation and sort them, reinsert the child individuals into the parent population according to the fitness values, select a set number of individuals to be solved to form a new parent population, and then return to S4;

[0080] S3.7, repeat S3.4-S3.6 until the number of iterations is reached or the resonance time difference between two adjacent iterations is less than the set threshold.

[0081] Among them, the threshold is set between 1 second and 2 seconds, that is, when the resonance time difference obtained by two adjacent iterative processes is less than the threshold range of 1 second to 2 seconds, the simulation can be stopped. Then the minimum resonance time generated by the blasting in the simulation process is obtained, and then the corresponding value of the individual to be solved (including the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S) based on the minimum resonance time can be determined, and then the value of each individual to be solved is determined (to facilitate the installation of the determined individual value to be solved to set the corresponding blasthole parameters and blasting parameters), under the condition of the determined individual to be solved (including the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S) value, the delay blasting time between holes in each area is set to be greater than the minimum resonance time obtained by the genetic algorithm (that is, the delay blasting time between holes in the corresponding blasting area is obtained), so that each area can reduce the total blasting time under the premise that no resonance occurs during blasting, and reduce the noise pollution time around the project.

[0082] Among them, the fitness function is

[0083] That is, if The smaller it is, the larger the fitness function F(x) is, and the more the encoding value of the corresponding parent individual meets the requirements.

[0084] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A safe blasting construction method, characterized in that: The steps include: S1, divide the blasting area into multiple areas; S2, setting the blasthole parameters and blasting parameters according to the engineering environment of the corresponding area; S3, establishing a resonance time optimization configuration model, and solving the resonance time optimization configuration model based on a genetic algorithm to obtain the minimum time for the blasting hole to generate resonance; S4, setting the inter-hole delayed blasting time of the corresponding area according to the obtained minimum resonance time generated by each blasting hole.

2. The safe blasting construction method according to claim 1, characterized in that: The blasting area in step S1 is divided into a pre-splitting blasting area, a buffer blasting area and a main blasting area. The pre-splitting blasting area is located at the boundary between the demolished part of the cofferdam and the retained part of the cofferdam. The buffer blasting area is located at the slope of the cofferdam. The main blasting area is the other areas of the blasting area except the pre-splitting blasting area and the buffer blasting area.

3. The safe blasting construction method according to claim 2, characterized in that: The blasthole parameters of step S2 include a blasthole inclination angle and a blasthole depth. The blasthole inclination angle of the pre-splitting blasting zone is the same as the corresponding slope ratio, and the blasthole depth is shallower than the corresponding slope step depth; the blasthole inclination angle of the buffer blasting zone is the same as the corresponding slope ratio, and the blasthole depth is shallower than the corresponding slope step depth; the blasthole in the main blasting zone is perpendicular to the surrounding rock, and the blasthole depth is shallower than the corresponding slope step depth.

4. The safe blasting construction method according to claim 2, characterized in that: The blasthole parameters of step S2 also include the row spacing W between blastholes, and the row spacing W between blastholes is obtained by a first calculation formula, which is: W = (20-40) d; Among them, W is the minimum resistance line of 1.4m~2.8m, and d is the diameter of the medicine roll.

5. The safe blasting construction method according to claim 2, characterized in that: The blast hole parameters in step S2 also include a blast hole spacing α, which is obtained by a second calculation formula: α＝(7～12)·D； Among them, α is the distance between blast holes, and D is the diameter of the blast hole.

6. The safe blasting construction method according to claim 2, characterized in that: The blasting parameters of step S2 include the vibration velocity V of the explosion point, the maximum single-shot charge Q, the closest distance R from the center of the explosive package to the building, the terrain coefficient K between the blasting point and the protected object, and the geological condition coefficient s between the blasting point and the protected object that satisfy the first equation. The first equation is: V=K(Q 1 / 3 / R) s 。 7. The safe blasting construction method according to claim 6, characterized in that: The shortest distance R from the center of the medicine package to the building is obtained by the third calculation formula, which is: Among them, K is a coefficient of 1 to 1.2 related to the charging method and blasting degree, and Q is the maximum single-shot charge.

8. The safe blasting construction method according to claim 2, characterized in that: The blasting parameters of step S2 also include the linear charge density △ line and the surrounding rock ultimate compressive strength R that satisfy the second equation. 压 , the second equation is: △ 线 ＝0.42·[R 压 ] 0.5 ·α 0.6 ； Among them, α is the distance between blast holes.

9. The safe blasting construction method according to claim 8, characterized in that: The specific process of establishing the resonance time optimization configuration model based on genetic algorithm is as follows: S3.1, setting the number of iterations of the genetic algorithm and the number of individuals to be solved in each generation population, wherein each individual to be solved includes the blast hole spacing α, the blast hole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S; S3.

2. Establish a resonance time optimization configuration model, wherein the resonance time optimization configuration model includes an objective function and constraints, wherein the objective function is: min(T S ); Among them, T s The time for the explosion point to resonate; S3.3, encode the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S to obtain the encoding value of the individual to be solved, and randomly generate an initial population formed by a number of individuals to be solved based on the constraint conditions, let the initial population be the parent population, let the individual to be solved in the parent population be the parent individual, and the encoding value of each parent individual includes the blasthole spacing α, the blasthole spacing W, the explosion source frequency ω, the explosion source amplitude A, and the explosion source vibration speed S; S3.4, bring the coding values ​​of each individual of the parent population into the simulation system for blasting simulation, and obtain the actual resonance time T of the blasting point s , the actual resonance time T s That is the simulation result of the explosion simulation; S3.5, calculating the objective function value of each individual in the parent population according to each simulation result, and then calculating the fitness value of each individual in the parent population according to the fitness function and sorting them; S3.6, save the first M parent individuals with the largest fitness values ​​in the parent population, select parent individuals from all parent individuals except the first M parent individuals with the largest fitness values ​​through roulette wheel to perform crossover mutation operations to obtain child individuals, calculate the fitness values ​​of the child individuals after crossover mutation and sort them, reinsert the child individuals into the parent population according to the fitness values, select a set number of individuals to be solved to form a new parent population, and then return to S4; S3.7, repeat S3.4-S3.6 until the number of iterations is reached or the resonance time difference between two adjacent iterations is less than the set threshold.

10. The safe blasting construction method according to claim 9, characterized in that: The fitness function is

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